100 Electrical connector parts are listed for the 2021 Ram 5500, in 41 part types, covering both the 6.4L V8 and the 6.7L L6 DIESEL Turbocharged. Each one has a brand, a manufacturer part number and notes that say where it fits.
On the 2021 Ram 5500, the connector system supplies the pigtails and connector bodies that terminate the vehicle harness at lamps, sensors and modules. Most of the listed parts are Transmission-Automatic Wiring Harness / Connector (11 parts), Trailer Connector (10 parts) and Headlamp Wiring Harness / Connector (9 parts). The other 38 part types cover the remaining 70 parts.
The 2021 Ram 5500 was sold with both the 6.4L V8 and the 6.7L L6 DIESEL Turbocharged. 52 parts fit every engine; the other 48 are engine-specific. Each part shows which engine(s) it fits.
The most listed brands for 2021 Ram 5500 electrical connector parts are MOPAR (42 parts), STANDARD MOTOR PRODUCTS (28 parts) and CURT (14 parts), plus 7 more brands.
5 parts on this 2021 Ram 5500 page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including STANDARD MOTOR PRODUCTS HP3945 (ABS Wheel Speed Sensor Connector) and MOPAR 68399008AD (Body Wiring Harness / Connector). Click any part number to see every vehicle that part fits.
A/C Compressor Clutch Coil Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 2021 5500 engines | S2052 | 🇺🇸 US 🇨🇦 CA | Connector Shape: OvalGauge: 18-14 Gauge | View on Amazon |
This table covers the harness connectors at the A/C Compressor Clutch Coil. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
One part is listed for the 2021 Ram 5500 — STANDARD MOTOR PRODUCTS S2052.
ABS Wheel Speed Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular Fits: all 2021 5500 engines | HP3945 | 🇺🇸 US 🇨🇦 CA | HandypackConnector Shape: Square | View on Amazon |
| ACDELCO Fits: all 2021 5500 engines | PT2160 | 🇺🇸 US 🇨🇦 CA | GoldShape: Square | View on Amazon |
| DORMAN Fits: all 2021 5500 engines | 645134 | 🇺🇸 US 🇨🇦 CA | ABS Wheel Speed SensorFront | View on Amazon |
| HOLSTEIN Fits: all 2021 5500 engines | 2HAR0035 | 🇺🇸 US 🇨🇦 CA | Includes ABS Wheel Speed Sensor Wire Harness | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: all 2021 5500 engines | S824 | 🇺🇸 US 🇨🇦 CA | Connector Shape: SquareHarness Length | View on Amazon |
This table covers the harness connectors at each ABS wheel-speed sensor. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
5 ABS Wheel Speed Sensor Connector parts are listed for the 2021 Ram 5500, from STANDARD MOTOR PRODUCTS, ACDELCO, DORMAN and 1 other brand. STANDARD MOTOR PRODUCTS HP3945 carries the "Popular" badge. All of them fit every engine offered in the 2021 5500.
Listed part numbers: STANDARD MOTOR PRODUCTS HP3945, ACDELCO PT2160 and DORMAN 645134, plus the other parts above.
Accelerator Pedal Position Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 2021 5500 engines | S1478 | 🇺🇸 US 🇨🇦 CA | Connector Shape: Rectangle | View on Amazon |
This table covers the harness connectors at the Accelerator Pedal Position Sensor. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
One part is listed for the 2021 Ram 5500 — STANDARD MOTOR PRODUCTS S1478.
Alternator / Generator Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HOLSTEIN Fits: 6.4L V8 | 2HAR0035 | 🇺🇸 US 🇨🇦 CA | Includes ABS Wheel Speed Sensor Wire Harness | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 6.4L V8 | S2895 | 🇺🇸 US 🇨🇦 CA | Upper Unit | View on Amazon |
| WELLS Fits: all 2021 5500 engines | 1P1877 | 🇺🇸 US 🇨🇦 CA | Wiring Harness Length: 18.75 In | View on Amazon |
This table covers the harness connectors at the Alternator / Generator. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
3 Alternator / Generator Connector parts are listed for the 2021 Ram 5500, from HOLSTEIN, STANDARD MOTOR PRODUCTS and WELLS. 1 part fits every engine; the other 2 are engine-specific.
This group includes HOLSTEIN 2HAR0035, STANDARD MOTOR PRODUCTS S2895 and WELLS 1P1877.
Ambient Air Temperature Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 2021 5500 engines | S3250 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the harness connectors at the Ambient Air Temperature Sensor. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
One part is listed for the 2021 Ram 5500 — STANDARD MOTOR PRODUCTS S3250.
Battery Current Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 2021 5500 engines | S1686 | 🇺🇸 US 🇨🇦 CA | Connector Shape: OvalBlack | View on Amazon |
This table covers the harness connectors at the Battery Current Sensor. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
One part is listed for the 2021 Ram 5500 — STANDARD MOTOR PRODUCTS S1686.
Body Wiring Harness / Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR Popular Fits: all 2021 5500 engines | 68399008AD | 🇺🇸 US 🇨🇦 CA | Camera | View on Amazon |
| MOPAR Fits: all 2021 5500 engines | 68403945AD | 🇺🇸 US 🇨🇦 CA | Front Axle Disconnect | View on Amazon |
| MOPAR Fits: all 2021 5500 engines | 68412666AA | 🇺🇸 US 🇨🇦 CA | Fits Cab ChassisTrailer Tire Pressure Monitoring System | View on Amazon |
| MOPAR Fits: all 2021 5500 engines | 68457849AA | 🇺🇸 US 🇨🇦 CA | Fits Cab Chassis19 Speakers SRT High Perf Audio | View on Amazon |
| MOPAR Fits: all 2021 5500 engines | 68457850AA | 🇺🇸 US 🇨🇦 CA | Fits Cab Chassis19 Speakers SRT High Perf Audio | View on Amazon |
| MOPAR Fits: all 2021 5500 engines | 68481372AA | 🇺🇸 US 🇨🇦 CA | Mirror | View on Amazon |
This table covers the body-harness connectors and pigtails. Typical signs include an intermittent fault that moves when you wiggle the harness, or a melted or corroded plug. Match terminal count and keyway. Repair with heat-shrink terminals, not twist-and-tape.
6 Body Wiring Harness / Connector parts for the 2021 Ram 5500 come from MOPAR. The "Popular" part is MOPAR 68399008AD. Every part fits both the 6.4L V8 and the 6.7L L6 DIESEL Turbocharged.
This group includes MOPAR 68399008AD, MOPAR 68403945AD and MOPAR 68412666AA and the remaining parts above.
Camshaft Position Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 6.4L V8 | S2278 | 🇺🇸 US 🇨🇦 CA | BlackConnector Shape: Oval | View on Amazon |
| WALKER PRODUCTS Fits: 6.4L V8 | 2701145 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the harness connectors at the Camshaft Position Sensor. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
2 Camshaft Position Sensor Connector parts are listed for the 2021 Ram 5500, from STANDARD MOTOR PRODUCTS and WALKER PRODUCTS.
Listed part numbers: STANDARD MOTOR PRODUCTS S2278 and WALKER PRODUCTS 2701145.
Controller Area Network (CAN) Bus Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: all 2021 5500 engines | 601309 | 🇺🇸 US 🇨🇦 CA | 13-Way Green | View on Amazon |
| DORMAN Fits: all 2021 5500 engines | 601308 | 🇺🇸 US 🇨🇦 CA | 20-Way Green | View on Amazon |
This table covers the harness connectors at the Controller Area Network (CAN) Bus. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
DORMAN supplies both parts for the 2021 Ram 5500. All of them fit every engine offered in the 2021 5500.
Listed part numbers: DORMAN 601309 and DORMAN 601308.
Crankshaft Position Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WALKER PRODUCTS Fits: 6.4L V8 | 2701145 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the harness connectors at the Crankshaft Position Sensor. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
One part is listed for the 2021 Ram 5500 — WALKER PRODUCTS 2701145.
Diesel Exhaust Fluid (DEF) Pump Wiring Harness / Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR Fits: 6.7L L6 DIESEL Turbocharged | 68330360AB | 🇺🇸 US 🇨🇦 CA | Urea Tank Harness | View on Amazon |
This table covers the wiring-harness connectors at the Diesel Exhaust Fluid (DEF) Pump. Typical signs include an intermittent fault that moves when you wiggle the harness, or a melted or corroded plug. Match terminal count and keyway. Repair with heat-shrink terminals, not twist-and-tape.
This group shows a single part: MOPAR 68330360AB.
Differential Pressure Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 6.7L L6 DIESEL Turbocharged | S1410 | 🇺🇸 US 🇨🇦 CA | Connector Shape: OvalWiring Harness Length (mm): 508 | View on Amazon |
This table covers the harness connectors at the Differential Pressure Sensor. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
One part is listed for the 2021 Ram 5500 — STANDARD MOTOR PRODUCTS S1410.
Door Lock Actuator Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 2021 5500 engines | S2894 | 🇺🇸 US 🇨🇦 CA | Front and Rear Door | View on Amazon |
This table covers the harness connectors at the Door Lock Actuator. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
One part is listed for the 2021 Ram 5500 — STANDARD MOTOR PRODUCTS S2894.
Door Wiring Harness / Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR Fits: all 2021 5500 engines | 68365982AD | 🇺🇸 US 🇨🇦 CA | Rear Door Wiring | View on Amazon |
| MOPAR Fits: all 2021 5500 engines | 68365983AD | 🇺🇸 US 🇨🇦 CA | Rear Door Wiring | View on Amazon |
| MOPAR Fits: all 2021 5500 engines | 68365984AD | 🇺🇸 US 🇨🇦 CA | Rear Door Wiring | View on Amazon |
| MOPAR Fits: all 2021 5500 engines | 68365985AD | 🇺🇸 US 🇨🇦 CA | Rear Door Wiring | View on Amazon |
This table covers the wiring-harness connectors at the Door. Typical signs include an intermittent fault that moves when you wiggle the harness, or a melted or corroded plug. Match terminal count and keyway. Repair with heat-shrink terminals, not twist-and-tape.
4 Door Wiring Harness / Connector parts for the 2021 Ram 5500 come from MOPAR. Every part fits both the 6.4L V8 and the 6.7L L6 DIESEL Turbocharged.
Listed part numbers: MOPAR 68365982AD, MOPAR 68365983AD and MOPAR 68365984AD, plus the other parts above.
EGR Valve Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 2021 5500 engines | S2498 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the harness connectors at the EGR Valve. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
One part is listed for the 2021 Ram 5500 — STANDARD MOTOR PRODUCTS S2498.
Engine Block Heater Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR Fits: 6.4L V8 | 68419912AB | 🇺🇸 US 🇨🇦 CA | Fits Cab ChassisEngine Block Heater | View on Amazon |
| MOPAR Fits: 6.7L L6 DIESEL Turbocharged | 68419913AB | 🇺🇸 US 🇨🇦 CA | Fits Cab ChassisCummins Engine | View on Amazon |
This table covers the harness connectors at the Engine Block Heater. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
MOPAR supplies both parts for the 2021 Ram 5500.
Listed part numbers: MOPAR 68419912AB and MOPAR 68419913AB.
Engine Wiring Harness / Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR Fits: 6.7L L6 DIESEL Turbocharged | 68533292AB | 🇺🇸 US 🇨🇦 CA | Fits Cab ChassisCummins Engine | View on Amazon |
This table covers the wiring-harness connectors at the Engine. Typical signs include an intermittent fault that moves when you wiggle the harness, or a melted or corroded plug. Match terminal count and keyway. Repair with heat-shrink terminals, not twist-and-tape.
This group shows a single part: MOPAR 68533292AB.
Exhaust Gas Temperature (EGT) Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 6.7L L6 DIESEL Turbocharged | S3157 | 🇺🇸 US 🇨🇦 CA | Fits Located Before Particulate Filteror Located in Catalytic Converter | View on Amazon |
This table covers the harness connectors at the Exhaust Gas Temperature (EGT) Sensor. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
One part is listed for the 2021 Ram 5500 — STANDARD MOTOR PRODUCTS S3157.
Fuel Injection Pressure Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 6.7L L6 DIESEL Turbocharged | S2902 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the harness connectors at the Fuel Injection Pressure Sensor. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
One part is listed for the 2021 Ram 5500 — STANDARD MOTOR PRODUCTS S2902.
Fuel Injector Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SKP Fits: all 2021 5500 engines | SKS824 | 🇺🇸 US 🇨🇦 CA | Includes ABS Wheel Speed Sensor Wire Harness | View on Amazon |
| WELLS Fits: 6.4L V8 | 1P2047 | 🇺🇸 US 🇨🇦 CA | Wiring Harness Length: 20.22 In | View on Amazon |
This table covers the harness connectors at the Fuel Injector. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
2 Fuel Injector Connector parts are listed for the 2021 Ram 5500, from SKP and WELLS. 1 part fits every engine; the other 1 is engine-specific.
Part numbers include SKP SKS824 and WELLS 1P2047.
Headlamp Wiring Harness / Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR Fits: 6.4L V8 | 52112316AE | 🇺🇸 US 🇨🇦 CA | Fits Cab ChassisSurround View Camera System, BI-Function LED Projector Headlamps | View on Amazon |
| MOPAR Fits: 6.4L V8 | 68437635AB | 🇺🇸 US 🇨🇦 CA | Fits Cab ChassisBI-Function LED Projector Headlamps | View on Amazon |
| MOPAR Fits: 6.4L V8 | 68437637AB | 🇺🇸 US 🇨🇦 CA | Fits Cab ChassisBI-Function LED Projector Headlamps, Remote Start System | View on Amazon |
| MOPAR Fits: 6.4L V8 | 68437639AB | 🇺🇸 US 🇨🇦 CA | Fits Cab ChassisHalogen Quad Headlamps or LED Reflector Headlamps, Remote Start System | View on Amazon |
| MOPAR Fits: 6.4L V8 | 68437640AB | 🇺🇸 US 🇨🇦 CA | Fits Cab ChassisHalogen Quad Headlamps or LED Reflector Headlamps | View on Amazon |
| MOPAR Fits: 6.7L L6 DIESEL Turbocharged | 52112319AE | 🇺🇸 US 🇨🇦 CA | Fits Cab ChassisCummins Engine | View on Amazon |
| MOPAR Fits: 6.7L L6 DIESEL Turbocharged | 52112323AE | 🇺🇸 US 🇨🇦 CA | Fits Cab ChassisCummins Engine | View on Amazon |
| MOPAR Fits: 6.7L L6 DIESEL Turbocharged | 68517421AA | 🇺🇸 US 🇨🇦 CA | Fits Cab ChassisCummins Engine | View on Amazon |
| MOPAR Fits: 6.7L L6 DIESEL Turbocharged | 68517422AA | 🇺🇸 US 🇨🇦 CA | Fits Cab ChassisCummins Engine | View on Amazon |
This table covers the wiring-harness connectors at the Headlamp. Typical signs include an intermittent fault that moves when you wiggle the harness, or a melted or corroded plug. Match terminal count and keyway. Repair with heat-shrink terminals, not twist-and-tape.
9 Headlamp Wiring Harness / Connector parts for the 2021 Ram 5500 come from MOPAR.
This group includes MOPAR 52112316AE, MOPAR 68437635AB and MOPAR 68437637AB and the remaining parts above.
Heater Core Temperature Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 2021 5500 engines | S2478 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the harness connectors at the Heater Core Temperature Sensor. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
One part is listed for the 2021 Ram 5500 — STANDARD MOTOR PRODUCTS S2478.
Ignition Coil Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 6.4L V8 | S2087 | 🇺🇸 US 🇨🇦 CA | Gauge: 16-14 GA | View on Amazon |
| WELLS Fits: 6.4L V8 | 1P1801 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the harness connectors at the Ignition Coil. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
2 Ignition Coil Connector parts are listed for the 2021 Ram 5500, from STANDARD MOTOR PRODUCTS and WELLS.
Part numbers include STANDARD MOTOR PRODUCTS S2087 and WELLS 1P1801.
Ignition Starter Switch Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR Fits: 6.7L L6 DIESEL Turbocharged | 68360695AD | 🇺🇸 US 🇨🇦 CA | Fits Cab ChassisCummins Engine | View on Amazon |
This table covers the harness connectors at the Ignition Starter Switch. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
One part is listed for the 2021 Ram 5500 — MOPAR 68360695AD.
Knock / Detonation Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 6.4L V8 | S2860 | 🇺🇸 US 🇨🇦 CA | Connector Shape: OvalGauge: 16 Gauge | View on Amazon |
This table covers the harness connectors at the Knock / Detonation Sensor. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
One part is listed for the 2021 Ram 5500 — STANDARD MOTOR PRODUCTS S2860.
Parking Aid Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR Fits: all 2021 5500 engines | 68377331AD | 🇺🇸 US 🇨🇦 CA | Fascia Wiring | View on Amazon |
| MOPAR Fits: all 2021 5500 engines | 68377334AD | 🇺🇸 US 🇨🇦 CA | Fascia Wiring | View on Amazon |
| MOPAR Fits: all 2021 5500 engines | 68377332AD | 🇺🇸 US 🇨🇦 CA | Fascia Wiring | View on Amazon |
| MOPAR Fits: all 2021 5500 engines | 68377333AD | 🇺🇸 US 🇨🇦 CA | Fascia Wiring | View on Amazon |
This table covers the harness connectors at the Parking Aid Sensor. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
MOPAR supplies the 4 Parking Aid Sensor Connector parts for the 2021 Ram 5500. All of them fit every engine offered in the 2021 5500.
This group includes MOPAR 68377331AD, MOPAR 68377334AD and MOPAR 68377332AD and the remaining parts above.
Radiator Fan Motor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 6.4L V8 | S2267 | 🇺🇸 US 🇨🇦 CA | Connector Shape: Round | View on Amazon |
This table covers the harness connectors at the Radiator Fan Motor. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
One part is listed for the 2021 Ram 5500 — STANDARD MOTOR PRODUCTS S2267.
Starter Solenoid Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 6.4L V8 | S2984 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the harness connectors at the Starter Solenoid. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
One part is listed for the 2021 Ram 5500 — STANDARD MOTOR PRODUCTS S2984.
Steering Wheel Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR Fits: all 2021 5500 engines | 68449242AA | 🇺🇸 US 🇨🇦 CA | Fits Cab ChassisWood/Leather Wrapped Steering Wheel, Integrated Voice Command with Bluetooth, Electronic Range Select, Adaptive Cruise Control with Stop, Instrument Panel Bezels-aluminum Litho W Real Wood# 2, Steering Wheel Mounted Audio Controls, Heated Steering Wheel | View on Amazon |
| MOPAR Fits: all 2021 5500 engines | 68449246AA | 🇺🇸 US 🇨🇦 CA | Fits Cab Chassis4-Spoke Steering Wheel, Integrated Voice Command with Bluetooth, Electronic Range Select, Speed Control, Instrument Panel Bezels-Painted | View on Amazon |
This table covers the harness connectors at the Steering Wheel. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
MOPAR supplies both parts for the 2021 Ram 5500. All of them fit every engine offered in the 2021 5500.
Listed part numbers: MOPAR 68449242AA and MOPAR 68449246AA.
Steering Wheel Position Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 2021 5500 engines | S2468 | 🇺🇸 US 🇨🇦 CA | Angle Sensor | View on Amazon |
This table covers the harness connectors at the Steering Wheel Position Sensor. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
This group shows a single part: STANDARD MOTOR PRODUCTS S2468.
Temperature Sender / Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WALKER PRODUCTS Fits: 6.7L L6 DIESEL Turbocharged | 2111500 | 🇺🇸 US 🇨🇦 CA | Terminal Quantity: 2Includes O-Ring | View on Amazon |
| WELLS Fits: 6.4L V8 | 1P2227 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the harness connectors at the Temperature Sender / Sensor. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
2 Temperature Sender / Sensor Connector parts are listed for the 2021 Ram 5500, from WALKER PRODUCTS and WELLS.
This group includes WALKER PRODUCTS 2111500 and WELLS 1P2227.
Throttle Control Actuator Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BWD/NIEHOFF Fits: 6.7L L6 DIESEL Turbocharged | PT1267 | 🇺🇸 US 🇨🇦 CA | Throttle Actuator ConnectorElectric Throttle Body Actuator Connector | View on Amazon |
| HOLSTEIN Fits: 6.7L L6 DIESEL Turbocharged | 2HAR0013 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| STANDARD MOTOR PRODUCTS Fits: 6.4L V8 | S2409 | 🇺🇸 US 🇨🇦 CA | Gender: MaleHarness Length | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 6.7L L6 DIESEL Turbocharged | S1768 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| STANDARD MOTOR PRODUCTS Fits: 6.7L L6 DIESEL Turbocharged | HP4105 | 🇺🇸 US 🇨🇦 CA | Handypack | View on Amazon |
This table covers the harness connectors at the Throttle Control Actuator. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
5 Throttle Control Actuator Connector parts are listed for the 2021 Ram 5500, from STANDARD MOTOR PRODUCTS, BWD/NIEHOFF and HOLSTEIN.
This group includes BWD/NIEHOFF PT1267, HOLSTEIN 2HAR0013 and STANDARD MOTOR PRODUCTS S2409 and the remaining parts above.
Trailer Adapter Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CURT Fits: all 2021 5500 engines | 57101 | 🇺🇸 US 🇨🇦 CA | 7-Way Round RV To 4-Way Flat Adapter | View on Amazon |
| MOPAR Fits: 6.7L L6 DIESEL Turbocharged | 56019823 | 🇺🇸 US 🇨🇦 CA | Trailer Tow Wiring Adapter converts seven-Way round connector To four-Way flat connector | View on Amazon |
This table covers the harness connectors at the Trailer Adapter. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
2 Trailer Adapter Connector parts are listed for the 2021 Ram 5500, from CURT and MOPAR. 1 part fits every engine; the other 1 is engine-specific.
This group includes CURT 57101 and MOPAR 56019823.
Trailer Brake Switch Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CURT Fits: all 2021 5500 engines | 51457 | 🇺🇸 US 🇨🇦 CA | Brake Control Adapter Harness | View on Amazon |
| CURT Fits: all 2021 5500 engines | 51458 | 🇺🇸 US 🇨🇦 CA | Brake Control Adapter Harness | View on Amazon |
This table covers the harness connectors at the Trailer Brake Switch. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
CURT supplies both parts for the 2021 Ram 5500. All of them fit every engine offered in the 2021 5500.
Part numbers include CURT 51457 and CURT 51458.
Trailer Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CURT Popular Fits: all 2021 5500 engines | 55415 | 🇺🇸 US 🇨🇦 CA | Replacement 7-Way RV Blade OEM Socket | View on Amazon |
| CURT Popular Fits: all 2021 5500 engines | 56229 | 🇺🇸 US 🇨🇦 CA | 7-Way USCAR Electrical ConnectorLength: 24 in. | View on Amazon |
| CURT Fits: all 2021 5500 engines | 56415 | 🇺🇸 US 🇨🇦 CA | Replacement 7-Way RV Blade OEM SocketTwist-In | View on Amazon |
| CURT Fits: all 2021 5500 engines | 55515 | 🇺🇸 US 🇨🇦 CA | Custom Wiring ConnectorOE 4-Way Flat | View on Amazon |
| CURT Fits: all 2021 5500 engines | 56515 | 🇺🇸 US 🇨🇦 CA | Custom Wiring Connector5-Way Flat | View on Amazon |
| CURT Fits: all 2021 5500 engines | 55774 | 🇺🇸 US 🇨🇦 CA | OEM Vehicle to Trailer Connector with Harness7-Way and 4-Way | View on Amazon |
| CURT Fits: all 2021 5500 engines | 57015 | 🇺🇸 US 🇨🇦 CA | OEM Replacement Dual-Output 7 and 4 Way ConnectorPlugs Into USCAR Socket | View on Amazon |
| CURT Fits: all 2021 5500 engines | 55384 | 🇺🇸 US 🇨🇦 CA | Custom Wiring Connector4-Way Flat | View on Amazon |
| CURT Fits: all 2021 5500 engines | 57020 | 🇺🇸 US 🇨🇦 CA | OEM Replacement Dual-Output 7 and 4 Way ConnectorPackaged | View on Amazon |
| CURT Fits: all 2021 5500 engines | 56584 | 🇺🇸 US 🇨🇦 CA | Custom Wiring Harness5-Way Flat | View on Amazon |
This table covers the trailer-lighting connectors at the hitch. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
10 Trailer Connector parts for the 2021 Ram 5500 come from CURT. The "Popular" part is CURT 55415. Every part fits both the 6.4L V8 and the 6.7L L6 DIESEL Turbocharged.
Trailer Extension Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CURT Fits: all 2021 5500 engines | 56475 | 🇺🇸 US 🇨🇦 CA | Custom Wiring Harness Extension | View on Amazon |
This table covers the harness connectors at the Trailer Extension. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
One part is listed for the 2021 Ram 5500 — CURT 56475.
Transmission-Automatic Wiring Harness / Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOPAR Popular Fits: all 2021 5500 engines | 68224246AA | 🇺🇸 US 🇨🇦 CA | Fits Cab ChassisExcept Power Take Off Preparation - Left Side | View on Amazon |
| MOPAR Fits: 6.4L V8 | 68517655AA | 🇺🇸 US 🇨🇦 CA | Fits Cab Chassis180 Amps Alternator | View on Amazon |
| MOPAR Fits: 6.4L V8 | 68517656AA | 🇺🇸 US 🇨🇦 CA | Fits Cab Chassis180 Amp Alternator, MAN Shift-On-The-Fly Transfer Case | View on Amazon |
| MOPAR Fits: 6.4L V8 | 68517657AA | 🇺🇸 US 🇨🇦 CA | Fits Cab Chassis180 Amp Alternator, Electric Shift-On-The-Fly Transfer Case | View on Amazon |
| MOPAR Fits: 6.4L V8 | 68517658AA | 🇺🇸 US 🇨🇦 CA | Fits Cab Chassis220 Amps Alternator | View on Amazon |
| MOPAR Fits: 6.4L V8 | 68517659AA | 🇺🇸 US 🇨🇦 CA | Fits Cab Chassis220 Amp Alternator, MAN Shift-On-The-Fly Transfer Case | View on Amazon |
| MOPAR Fits: 6.7L L6 DIESEL Turbocharged | 68484736AB | 🇺🇸 US 🇨🇦 CA | Fits Cab ChassisCummins Engine | View on Amazon |
| MOPAR Fits: 6.7L L6 DIESEL Turbocharged | 68484737AB | 🇺🇸 US 🇨🇦 CA | Fits Cab ChassisCummins Engine | View on Amazon |
| MOPAR Fits: 6.7L L6 DIESEL Turbocharged | 68484738AB | 🇺🇸 US 🇨🇦 CA | Fits Cab ChassisCummins Engine | View on Amazon |
| MOPAR Fits: 6.7L L6 DIESEL Turbocharged | 68484739AB | 🇺🇸 US 🇨🇦 CA | Fits Cab ChassisCummins Engine | View on Amazon |
| MOPAR Fits: 6.7L L6 DIESEL Turbocharged | 68484740AB | 🇺🇸 US 🇨🇦 CA | Fits Cab ChassisCummins Engine | View on Amazon |
This table covers the wiring-harness connectors at the Transmission-Automatic. Typical signs include an intermittent fault that moves when you wiggle the harness, or a melted or corroded plug. Match terminal count and keyway. Repair with heat-shrink terminals, not twist-and-tape.
11 Transmission-Automatic Wiring Harness / Connector parts for the 2021 Ram 5500 come from MOPAR. The "Popular" part is MOPAR 68224246AA. 1 part fits every engine; the other 10 are engine-specific.
Vapor Canister Purge Valve / Solenoid Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 6.4L V8 | HP4325 | 🇺🇸 US 🇨🇦 CA | HandypackConnector Shape: Rectangle | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 6.4L V8 | S1024 | 🇺🇸 US 🇨🇦 CA | Connector Shape: RectangleHarness Length | View on Amazon |
This table covers the harness connectors at the Vapor Canister Purge Valve / Solenoid. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
STANDARD MOTOR PRODUCTS supplies both parts for the 2021 Ram 5500.
Part numbers include STANDARD MOTOR PRODUCTS HP4325 and STANDARD MOTOR PRODUCTS S1024.
Vapor Leak Detection Pump Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 2021 5500 engines | HP4325 | 🇺🇸 US 🇨🇦 CA | HandypackConnector Shape: Rectangle | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: all 2021 5500 engines | S1024 | 🇺🇸 US 🇨🇦 CA | Connector Shape: RectangleHarness Length | View on Amazon |
This table covers the harness connectors at the Vapor Leak Detection Pump. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
STANDARD MOTOR PRODUCTS supplies both parts for the 2021 Ram 5500. All of them fit every engine offered in the 2021 5500.
Part numbers include STANDARD MOTOR PRODUCTS HP4325 and STANDARD MOTOR PRODUCTS S1024.
Variable Power Steering Solenoid Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 2021 5500 engines | S3145 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the harness connectors at the Variable Power Steering Solenoid. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
This group shows a single part: STANDARD MOTOR PRODUCTS S3145.
Washer Pump Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 2021 5500 engines | S2279 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the harness connectors at the Washer Pump. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
One part is listed for the 2021 Ram 5500 — STANDARD MOTOR PRODUCTS S2279.
Buying Electrical Connector Parts for a 2021 Ram 5500
On this vehicle, the connector system supplies the pigtails and connector bodies that terminate the vehicle harness at lamps, sensors and modules.
- Match the engine first. Some electrical connector parts fit every engine; others are engine-specific. Each row shows which engine(s) it fits.
- Read the notes on each row for position, trim and spec qualifiers before you order.
- Where labor overlaps, use heat-shrink crimp connectors rather than twist-and-tape for any pigtail splice, especially outside the cabin.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Transmission-Automatic Wiring Harness / Connector and Trailer Connector .
Frequently Asked Questions
How many electrical connector parts fit the 2021 Ram 5500?
Our catalog currently lists 100 electrical connector parts for the 2021 Ram 5500 across 41 subcategories and 10 brands, covering both the 6.4L V8 and the 6.7L L6 DIESEL Turbocharged. Each part is matched to the engine(s) it fits.
Do electrical connector parts differ between 2021 Ram 5500 engines?
Some do. 52 parts fit every engine; the other 48 are engine-specific. Each row (and the filter at the top) shows which. If you're unsure which engine you have, check the emissions label under the hood or the 8th character of your VIN.
What are the signs of electrical connector problems on a 2021 Ram 5500?
Common symptoms include intermittent faults that move when the harness is wiggled, green corrosion inside a plug, or melted connector housings near heat sources. If you notice any of these, identify the affected subcategory above and cross-reference the part numbers listed.
What should I replace at the same time?
Where labor overlaps, use heat-shrink crimp connectors rather than twist-and-tape for any pigtail splice, especially outside the cabin.
What do the market flags (US, CA, MX) on each part mean?
They show the market for which the manufacturer published application data for that part — where the vehicle was first sold, not where the part was made. If your 2021 Ram 5500 was originally sold in the US, the safest choice is a part marked for the US market.
How do I make sure a part fits my 2021 Ram 5500?
First match the engine — each row shows which engine(s) the part fits. Then match the connector by terminal count and keyway, not just appearance — many families look identical but will not lock. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2021 Ram 5500
Electrical Connector Parts for Other Ram 5500 Years
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