58 Electrical connector parts are listed for the 2021 Ram 1500 Classic, in 29 part types, covering both the 3.6L V6 and the 5.7L V8. Each one has a brand, a manufacturer part number and notes that say where it fits.
On the 2021 Ram 1500 Classic, the connector system supplies the pigtails and connector bodies that terminate the vehicle harness at lamps, sensors and modules. 20 parts of the 58 listed are Trailer Connector (12 parts), Fuel Injector Connector (5 parts) and ABS Wheel Speed Sensor Connector (3 parts). The other 26 part types cover the remaining 38 parts.
The 2021 Ram 1500 Classic was sold with both the 3.6L V6 and the 5.7L V8. 39 parts fit every engine; the other 19 are engine-specific. Each part shows which engine(s) it fits.
The most listed brands for 2021 Ram 1500 Classic electrical connector parts are STANDARD MOTOR PRODUCTS (23 parts), CURT (18 parts) and WELLS (6 parts), plus 6 more brands.
4 parts on this 2021 Ram 1500 Classic page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including WELLS 1P2047 (Fuel Injector Connector) and CURT 56415 (Trailer Connector). Click any part number to see every vehicle that part fits.
A/C Refrigerant Pressure Switch Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HOLSTEIN Fits: all 2021 1500 Classic engines | 2HAR0060 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| STANDARD MOTOR PRODUCTS Fits: all 2021 1500 Classic engines | S2316 | 🇺🇸 US 🇨🇦 CA | Connector Shape: OvalNumber of Splice Connectors Included: 3 | View on Amazon |
This table covers the harness connectors at the A/C Refrigerant Pressure 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.
2 A/C Refrigerant Pressure Switch Connector parts for the 2021 Ram 1500 Classic come from 2 brands — HOLSTEIN and STANDARD MOTOR PRODUCTS. Every part fits both the 3.6L V6 and the 5.7L V8.
Listed part numbers: HOLSTEIN 2HAR0060 and STANDARD MOTOR PRODUCTS S2316.
ABS Wheel Speed Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Fits: all 2021 1500 Classic engines | PT2160 | 🇺🇸 US 🇨🇦 CA | GoldShape: Square | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: all 2021 1500 Classic engines | HP3945 | 🇺🇸 US 🇨🇦 CA | HandypackConnector Shape: Square | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: all 2021 1500 Classic 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.
3 ABS Wheel Speed Sensor Connector parts are listed for the 2021 Ram 1500 Classic, from STANDARD MOTOR PRODUCTS and ACDELCO. All of them fit every engine offered in the 2021 1500 Classic.
Part numbers include ACDELCO PT2160, STANDARD MOTOR PRODUCTS HP3945 and STANDARD MOTOR PRODUCTS S824.
Accelerator Pedal Position Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 2021 1500 Classic 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 1500 Classic — STANDARD MOTOR PRODUCTS S1478.
Air Intake / Charge Temperature Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS Fits: 3.6L V6 | 1P4264 | 🇺🇸 US 🇨🇦 CA | Terminal Quantity: 4 | View on Amazon |
This table covers the harness connectors at the Air Intake / Charge 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.
This group shows a single part: WELLS 1P4264.
Camshaft Position Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WALKER PRODUCTS Fits: 5.7L V8 | 2701145 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WELLS Fits: 3.6L V6 | 1P2668 | 🇺🇸 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 1500 Classic, from WALKER PRODUCTS and WELLS.
Listed part numbers: WALKER PRODUCTS 2701145 and WELLS 1P2668.
Crankshaft Position Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 3.6L V6 | S2916 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WALKER PRODUCTS Fits: all 2021 1500 Classic engines | 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.
2 Crankshaft Position Sensor Connector parts are listed for the 2021 Ram 1500 Classic, from STANDARD MOTOR PRODUCTS and WALKER PRODUCTS. 1 part fits every engine; the other 1 is engine-specific.
Part numbers include STANDARD MOTOR PRODUCTS S2916 and WALKER PRODUCTS 2701145.
Cylinder Deactivation Solenoid Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS Fits: 5.7L V8 | 1P2227 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the harness connectors at the Cylinder Deactivation 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 1500 Classic — WELLS 1P2227.
Door Lock Actuator Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 2021 1500 Classic engines | S2894 | 🇺🇸 US 🇨🇦 CA | Front RightCrew Cab Pickup | 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 1500 Classic — STANDARD MOTOR PRODUCTS S2894.
Engine Wiring Harness / Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 5.7L V8 | 926830 | 🇺🇸 US 🇨🇦 CA | Multiple Displacement Solenoid | 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: DORMAN 926830.
Fuel Injector Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS Popular Fits: all 2021 1500 Classic engines | 1P2047 | 🇺🇸 US 🇨🇦 CA | Wiring Harness Length: 20.22 In | View on Amazon |
| GB REMANUFACTURING Fits: all 2021 1500 Classic engines | 5191 | 🇺🇸 US 🇨🇦 CA | Express or SLT Model or Tradesman or Warlock | View on Amazon |
| SKP Fits: all 2021 1500 Classic engines | SKS824 | 🇺🇸 US 🇨🇦 CA | Includes ABS Wheel Speed Sensor Wire Harness | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 5.7L V8 | HP4347 | 🇺🇸 US 🇨🇦 CA | Handypack | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 5.7L V8 | S1895 | 🇺🇸 US 🇨🇦 CA | Number of Splice Connectors Included: 2 | 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.
5 Fuel Injector Connector parts are listed for the 2021 Ram 1500 Classic, from STANDARD MOTOR PRODUCTS, WELLS, GB REMANUFACTURING and 1 other brand. WELLS 1P2047 carries the "Popular" badge. 3 parts fit every engine; the other 2 are engine-specific.
Listed part numbers: WELLS 1P2047, GB REMANUFACTURING 5191 and SKP SKS824, plus the other parts above.
Fuel Sending Unit Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 5.7L V8 | S1410 | 🇺🇸 US 🇨🇦 CA | Connector Shape: OvalWiring Harness Length (mm): 508 | View on Amazon |
This table covers the harness connectors at the Fuel Sending Unit. 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 1500 Classic — STANDARD MOTOR PRODUCTS S1410.
Headlamp Wiring Harness / Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: all 2021 1500 Classic engines | 926384 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| SKP Fits: all 2021 1500 Classic engines | SK926384 | 🇺🇸 US 🇨🇦 CA | 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.
2 Headlamp Wiring Harness / Connector parts for the 2021 Ram 1500 Classic come from 2 brands — DORMAN and SKP. Every part fits both the 3.6L V6 and the 5.7L V8.
This group includes DORMAN 926384 and SKP SK926384.
Ignition Coil Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HOLSTEIN Fits: 3.6L V6 | 2HAR0060 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| STANDARD MOTOR PRODUCTS Fits: 3.6L V6 | S2316 | 🇺🇸 US 🇨🇦 CA | Connector Shape: OvalNumber of Splice Connectors Included: 3 | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 5.7L V8 | S2087 | 🇺🇸 US 🇨🇦 CA | Gauge: 16-14 GA | 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.
3 Ignition Coil Connector parts are listed for the 2021 Ram 1500 Classic, from STANDARD MOTOR PRODUCTS and HOLSTEIN.
Part numbers include HOLSTEIN 2HAR0060, STANDARD MOTOR PRODUCTS S2316 and STANDARD MOTOR PRODUCTS S2087.
Intake Manifold Runner Control Valve / Solenoid Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 5.7L V8 | S3045 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the harness connectors at the Intake Manifold Runner Control 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.
This group shows a single part: STANDARD MOTOR PRODUCTS S3045.
Knock / Detonation Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 2021 1500 Classic engines | 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 1500 Classic — STANDARD MOTOR PRODUCTS S2860.
Oil Pressure Sender / Switch Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HOLSTEIN Fits: all 2021 1500 Classic engines | 2HAR0060 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| STANDARD MOTOR PRODUCTS Fits: all 2021 1500 Classic engines | S2316 | 🇺🇸 US 🇨🇦 CA | Connector Shape: OvalNumber of Splice Connectors Included: 3 | View on Amazon |
This table covers the harness connectors at the Oil Pressure Sender / 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.
2 Oil Pressure Sender / Switch Connector parts for the 2021 Ram 1500 Classic come from 2 brands — HOLSTEIN and STANDARD MOTOR PRODUCTS. Every part fits both the 3.6L V6 and the 5.7L V8.
Listed part numbers: HOLSTEIN 2HAR0060 and STANDARD MOTOR PRODUCTS S2316.
Oil Temperature Sender Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 3.6L V6 | S2442 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the harness connectors at the Oil Temperature Sender. 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 S2442.
Parking Aid Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 2021 1500 Classic engines | S1497 | 🇺🇸 US 🇨🇦 CA | Fits Rear | 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.
One part is listed for the 2021 Ram 1500 Classic — STANDARD MOTOR PRODUCTS S1497.
Starter Solenoid Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 3.6L V6 | 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 1500 Classic — STANDARD MOTOR PRODUCTS S2984.
Temperature Sender / Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS Fits: 5.7L 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.
One part is listed for the 2021 Ram 1500 Classic — WELLS 1P2227.
Trailer Adapter Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CURT Fits: all 2021 1500 Classic engines | 57101 | 🇺🇸 US 🇨🇦 CA | 7-Way Round RV To 4-Way Flat Adapter | 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.
One part is listed for the 2021 Ram 1500 Classic — CURT 57101.
Trailer Brake Switch Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CURT Fits: all 2021 1500 Classic engines | 51457 | 🇺🇸 US 🇨🇦 CA | Brake Control Adapter Harness | View on Amazon |
| CURT Fits: all 2021 1500 Classic 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 1500 Classic. All of them fit every engine offered in the 2021 1500 Classic.
Part numbers include CURT 51457 and CURT 51458.
Trailer Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CURT Popular Fits: all 2021 1500 Classic engines | 56415 | 🇺🇸 US 🇨🇦 CA | Replacement 7-Way RV Blade OEM SocketTwist-In | View on Amazon |
| CURT Popular Fits: all 2021 1500 Classic engines | 55415 | 🇺🇸 US 🇨🇦 CA | Replacement 7-Way RV Blade OEM Socket | View on Amazon |
| CURT Popular Fits: all 2021 1500 Classic engines | 56229 | 🇺🇸 US 🇨🇦 CA | 7-Way USCAR Electrical ConnectorLength: 24 in. | View on Amazon |
| CURT Fits: all 2021 1500 Classic engines | 55515 | 🇺🇸 US 🇨🇦 CA | Custom Wiring ConnectorOE 4-Way Flat | View on Amazon |
| CURT Fits: all 2021 1500 Classic engines | 56515 | 🇺🇸 US 🇨🇦 CA | Custom Wiring Connector5-Way Flat | View on Amazon |
| CURT Fits: all 2021 1500 Classic engines | 55774 | 🇺🇸 US 🇨🇦 CA | OEM Vehicle to Trailer Connector with Harness7-Way and 4-Way | View on Amazon |
| CURT Fits: all 2021 1500 Classic engines | 57015 | 🇺🇸 US 🇨🇦 CA | OEM Replacement Dual-Output 7 and 4 Way ConnectorPlugs Into USCAR Socket | View on Amazon |
| CURT Fits: all 2021 1500 Classic engines | 55384 | 🇺🇸 US 🇨🇦 CA | Custom Wiring Connector4-Way Flat | View on Amazon |
| CURT Fits: all 2021 1500 Classic engines | 57020 | 🇺🇸 US 🇨🇦 CA | OEM Replacement Dual-Output 7 and 4 Way ConnectorPackaged | View on Amazon |
| CURT Fits: all 2021 1500 Classic engines | 56584 | 🇺🇸 US 🇨🇦 CA | Custom Wiring Harness5-Way Flat | View on Amazon |
| CURT Fits: all 2021 1500 Classic engines | 58906 | 🇺🇸 US 🇨🇦 CA | Towed-Vehicle RV HarnessConnects Towed Vehicle To RV Using A Standard 4-Way Flat Trailer Plug | View on Amazon |
| CURT Fits: all 2021 1500 Classic engines | 58916 | 🇺🇸 US 🇨🇦 CA | Towed-Vehicle RV HarnessConnects Towed Vehicle To RV Using A Standard 4-Way Flat Trailer Plug | 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.
12 Trailer Connector parts for the 2021 Ram 1500 Classic come from CURT. The "Popular" part is CURT 56415. Every part fits both the 3.6L V6 and the 5.7L V8.
Trailer Extension Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CURT Fits: all 2021 1500 Classic engines | 56475 | 🇺🇸 US 🇨🇦 CA | Custom Wiring Harness Extension | View on Amazon |
| CURT Fits: all 2021 1500 Classic engines | 56070010 | 🇺🇸 US 🇨🇦 CA | Custom Wiring Harness Extension7 ft. | View on Amazon |
| CURT Fits: all 2021 1500 Classic engines | 56000010 | 🇺🇸 US 🇨🇦 CA | Custom Wiring Harness ExtensionPack of 10 | 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.
CURT supplies the 3 Trailer Extension Connector parts for the 2021 Ram 1500 Classic. All of them fit every engine offered in the 2021 1500 Classic.
Part numbers include CURT 56475, CURT 56070010 and CURT 56000010.
Vapor Canister Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 5.7L V8 | HP4325 | 🇺🇸 US 🇨🇦 CA | HandypackConnector Shape: Rectangle | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 5.7L V8 | S1024 | 🇺🇸 US 🇨🇦 CA | Connector Shape: RectangleHarness Length | View on Amazon |
This table covers the harness connectors at the Vapor Canister. 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 Vapor Canister Connector parts for the 2021 Ram 1500 Classic come from STANDARD MOTOR PRODUCTS.
Part numbers include STANDARD MOTOR PRODUCTS HP4325 and STANDARD MOTOR PRODUCTS S1024.
Vapor Canister Purge Valve / Solenoid Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 2021 1500 Classic engines | HP4325 | 🇺🇸 US 🇨🇦 CA | HandypackConnector Shape: Rectangle | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: all 2021 1500 Classic engines | 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 1500 Classic. All of them fit every engine offered in the 2021 1500 Classic.
Listed part numbers: STANDARD MOTOR PRODUCTS HP4325 and STANDARD MOTOR PRODUCTS S1024.
Vapor Leak Detection Pump Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS Fits: all 2021 1500 Classic engines | 1P2044 | 🇺🇸 US 🇨🇦 CA | 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.
One part is listed for the 2021 Ram 1500 Classic — WELLS 1P2044.
Variable Valve Timing (VVT) Solenoid Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 3.6L V6 | S2492 | 🇺🇸 US 🇨🇦 CA | with Centered Index Slot | View on Amazon |
This table covers the harness connectors at the Variable Valve Timing (VVT) 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 1500 Classic — STANDARD MOTOR PRODUCTS S2492.
Washer Pump Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 2021 1500 Classic 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 1500 Classic — STANDARD MOTOR PRODUCTS S2279.
Buying Electrical Connector Parts for a 2021 Ram 1500 Classic
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: Trailer Connector and Fuel Injector Connector .
Frequently Asked Questions
How many electrical connector parts fit the 2021 Ram 1500 Classic?
Our catalog currently lists 58 electrical connector parts for the 2021 Ram 1500 Classic across 29 subcategories and 9 brands, covering both the 3.6L V6 and the 5.7L V8. Each part is matched to the engine(s) it fits.
Do electrical connector parts differ between 2021 Ram 1500 Classic engines?
Some do. 39 parts fit every engine; the other 19 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 1500 Classic?
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 1500 Classic 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 1500 Classic?
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 1500 Classic
Electrical Connector Parts for Other Ram 1500 Classic Years
Switch vehicle or jump to a subcategory
Manufacturer names, model designations and part numbers are used for identification and fitment reference only. AutoFactsDB is an independent catalog and is not affiliated with, endorsed by, or sponsored by any vehicle manufacturer displayed on this page.