38 Electrical connector parts are listed for the 2021 Ford Transit, in 27 part types, covering all 3 engine options (2.0L L4 DIESEL Turbocharged, 3.5L V6 and 999cc L3 Turbocharged). Each one has a brand, a manufacturer part number and notes that say where it fits.
On the 2021 Ford Transit, the connector system supplies the pigtails and connector bodies that terminate the vehicle harness at lamps, sensors and modules. 7 parts of the 38 listed are Trailer Brake Switch Connector (3 parts), A/C Compressor Clutch Coil Connector (2 parts) and Air Intake / Charge Temperature Sensor Connector (2 parts). The other 24 part types cover the remaining 31 parts.
The 2021 Ford Transit was sold with 3 engines. 16 parts fit every engine; the other 22 are engine-specific. Each part shows which engine(s) it fits.
The most listed brands for 2021 Ford Transit electrical connector parts are STANDARD MOTOR PRODUCTS (22 parts), DORMAN (10 parts) and HOLSTEIN (6 parts).
Each part number listed for the 2021 Ford Transit opens a page with every vehicle that part fits.
A/C Compressor Clutch Coil Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HOLSTEIN Fits: all 2021 Transit engines | 2HAR0035 | 🇲🇽 MX | Includes ABS Wheel Speed Sensor Wire Harness | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: all 2021 Transit engines | S2342 | 🇲🇽 MX | blackConnector Shape: Square | 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.
2 A/C Compressor Clutch Coil Connector parts are listed for the 2021 Ford Transit, from HOLSTEIN and STANDARD MOTOR PRODUCTS. All of them fit every engine offered in the 2021 Transit.
Listed part numbers: HOLSTEIN 2HAR0035 and STANDARD MOTOR PRODUCTS S2342.
Air Intake / Charge Temperature Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 2.0L L4 DIESEL Turbocharged | 645140 | 🇲🇽 MX | 2 Cavity | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 2.0L L4 DIESEL Turbocharged | S2346 | 🇲🇽 MX | Complete AssemblyGray | 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.
2 Air Intake / Charge Temperature Sensor Connector parts for the 2021 Ford Transit come from 2 brands — DORMAN and STANDARD MOTOR PRODUCTS.
This group includes DORMAN 645140 and STANDARD MOTOR PRODUCTS S2346.
Ambient Air Temperature Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 2.0L L4 DIESEL Turbocharged, 3.5L V6 | S2495 | 🇲🇽 MX | 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 Ford Transit — STANDARD MOTOR PRODUCTS S2495.
Blower Motor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 2.0L L4 DIESEL Turbocharged, 3.5L V6 | 645184 | 🇲🇽 MX | Fits Front2 Cavity | View on Amazon |
This table covers the harness connectors at the Blower 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 Ford Transit — DORMAN 645184.
Blower Motor Control Module / Resistor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 2.0L L4 DIESEL Turbocharged, 3.5L V6 | 645184 | 🇲🇽 MX | Auxiliary2 Cavity | View on Amazon |
This table covers the connectors at the blower resistor or control module. 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: DORMAN 645184.
Brake Fluid Level Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HOLSTEIN Fits: all 2021 Transit engines | 2HAR0035 | 🇲🇽 MX | Includes ABS Wheel Speed Sensor Wire Harness | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: all 2021 Transit engines | S2342 | 🇲🇽 MX | blackConnector Shape: Square | View on Amazon |
This table covers the harness connectors at the Brake Fluid Level 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 Brake Fluid Level Sensor Connector parts for the 2021 Ford Transit come from 2 brands — HOLSTEIN and STANDARD MOTOR PRODUCTS. Every part fits all 3 engine options (2.0L L4 DIESEL Turbocharged, 3.5L V6 and 999cc L3 Turbocharged).
Part numbers include HOLSTEIN 2HAR0035 and STANDARD MOTOR PRODUCTS S2342.
Cylinder Head Temperature Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HOLSTEIN Fits: 3.5L V6 | 2HAR0035 | 🇲🇽 MX | Includes ABS Wheel Speed Sensor Wire Harness | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 3.5L V6 | S2342 | 🇲🇽 MX | blackConnector Shape: Square | View on Amazon |
This table covers the harness connectors at the Cylinder Head 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.
2 Cylinder Head Temperature Sensor Connector parts are listed for the 2021 Ford Transit, from HOLSTEIN and STANDARD MOTOR PRODUCTS.
Listed part numbers: HOLSTEIN 2HAR0035 and STANDARD MOTOR PRODUCTS S2342.
Differential Pressure Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 2.0L L4 DIESEL Turbocharged | 645247 | 🇲🇽 MX | 3 Cavity | 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 Ford Transit — DORMAN 645247.
EGR Pressure Feedback (DPFE) Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 3.5L V6 | 645247 | 🇲🇽 MX | 3 Cavity | View on Amazon |
This table covers the harness connectors at the EGR Pressure Feedback (DPFE) 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 Ford Transit — DORMAN 645247.
Grille Air Intake / Shutter Actuator Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 2021 Transit engines | S2535 | 🇲🇽 MX | Connector Shape: RectangularHarness Length | View on Amazon |
This table covers the harness connectors at the Grille Air Intake / Shutter 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 Ford Transit — STANDARD MOTOR PRODUCTS S2535.
Headlamp Wiring Harness / Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 2.0L L4 DIESEL Turbocharged, 3.5L V6 | S2927 | 🇲🇽 MX | 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.
This group shows a single part: STANDARD MOTOR PRODUCTS S2927.
Hood Ajar Indicator Switch Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HOLSTEIN Fits: all 2021 Transit engines | 2HAR0035 | 🇲🇽 MX | Includes ABS Wheel Speed Sensor Wire Harness | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: all 2021 Transit engines | S2342 | 🇲🇽 MX | blackConnector Shape: Square | View on Amazon |
This table covers the harness connectors at the Hood Ajar Indicator 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 Hood Ajar Indicator Switch Connector parts for the 2021 Ford Transit come from 2 brands — HOLSTEIN and STANDARD MOTOR PRODUCTS. Every part fits all 3 engine options (2.0L L4 DIESEL Turbocharged, 3.5L V6 and 999cc L3 Turbocharged).
Part numbers include HOLSTEIN 2HAR0035 and STANDARD MOTOR PRODUCTS S2342.
Horn Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HOLSTEIN Fits: all 2021 Transit engines | 2HAR0035 | 🇲🇽 MX | Includes ABS Wheel Speed Sensor Wire Harness | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: all 2021 Transit engines | S2342 | 🇲🇽 MX | blackConnector Shape: Square | View on Amazon |
This table covers the harness connectors at the Horn. 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 Horn Connector parts for the 2021 Ford Transit come from 2 brands — HOLSTEIN and STANDARD MOTOR PRODUCTS. Every part fits all 3 engine options (2.0L L4 DIESEL Turbocharged, 3.5L V6 and 999cc L3 Turbocharged).
This group includes HOLSTEIN 2HAR0035 and STANDARD MOTOR PRODUCTS S2342.
Impact / Crash Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 2.0L L4 DIESEL Turbocharged, 3.5L V6 | 645144 | 🇲🇽 MX | 2 CavityFront Doors | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 2.0L L4 DIESEL Turbocharged, 3.5L V6 | S2495 | 🇲🇽 MX | View on Amazon |
This table covers the harness connectors at the Impact / Crash 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 Impact / Crash Sensor Connector parts are listed for the 2021 Ford Transit, from DORMAN and STANDARD MOTOR PRODUCTS.
This group includes DORMAN 645144 and STANDARD MOTOR PRODUCTS S2495.
Neutral Safety Switch / Range Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 2021 Transit engines | S2535 | 🇲🇽 MX | Connector Shape: RectangularHarness Length | View on Amazon |
This table covers the harness connectors at the Neutral Safety Switch / Range 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 S2535.
Parking / Turn Signal Lamp Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 2021 Transit engines | S894 | 🇲🇽 MX | Connector Shape: OvalSplice Connectors Included: Yes | View on Amazon |
This table covers the harness connectors at the Parking / Turn Signal Lamp. 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 Ford Transit — STANDARD MOTOR PRODUCTS S894.
Parking Aid Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 2.0L L4 DIESEL Turbocharged, 3.5L V6 | S2807 | 🇲🇽 MX | Front | 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 Ford Transit — STANDARD MOTOR PRODUCTS S2807.
Power Inverter Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 2021 Transit engines | S1853 | 🇲🇽 MX | Length (In): 1 | View on Amazon |
This table covers the harness connectors at the Power Inverter. 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 Ford Transit — STANDARD MOTOR PRODUCTS S1853.
Power Sliding Door Module Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 2021 Transit engines | S1853 | 🇲🇽 MX | Length (In): 1 | View on Amazon |
This table covers the harness connectors at the Power Sliding Door Module. 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 S1853.
Seat Belt Pretensioner Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 2.0L L4 DIESEL Turbocharged, 3.5L V6 | S3033 | 🇲🇽 MX | Terminal Type: Blade | View on Amazon |
This table covers the harness connectors at the Seat Belt Pretensioner. 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 Ford Transit — STANDARD MOTOR PRODUCTS S3033.
Tail Lamp Assembly Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 2.0L L4 DIESEL Turbocharged, 3.5L V6 | S3019 | 🇲🇽 MX | Connector Shape: Round | View on Amazon |
This table covers the harness connectors at the Tail Lamp Assembly. 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 Ford Transit — STANDARD MOTOR PRODUCTS S3019.
Trailer Brake Switch Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 2.0L L4 DIESEL Turbocharged, 3.5L V6 | S1853 | 🇲🇽 MX | Length (In): 1 | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: all 2021 Transit engines | S3034 | 🇲🇽 MX | Gauge: 14-12 GaugeWire Gauge (GA): 12, 14 | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 2.0L L4 DIESEL Turbocharged, 3.5L V6 | S2424 | 🇲🇽 MX | Connector Shape: Rectangle | 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.
STANDARD MOTOR PRODUCTS supplies the 3 Trailer Brake Switch Connector parts for the 2021 Ford Transit. 1 part fits every engine; the other 2 are engine-specific.
This group includes STANDARD MOTOR PRODUCTS S1853, STANDARD MOTOR PRODUCTS S3034 and STANDARD MOTOR PRODUCTS S2424.
Trailer Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 2.0L L4 DIESEL Turbocharged, 3.5L V6 | 645141 | 🇲🇽 MX | 7 Cavity | View on Amazon |
| DORMAN Fits: 2.0L L4 DIESEL Turbocharged, 3.5L V6 | 924611 | 🇲🇽 MX | 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.
2 Trailer Connector parts for the 2021 Ford Transit come from DORMAN.
Listed part numbers: DORMAN 645141 and DORMAN 924611.
Trunk / Cargo Area Lamp Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HOLSTEIN Fits: all 2021 Transit engines | 2HAR0035 | 🇲🇽 MX | Includes ABS Wheel Speed Sensor Wire Harness | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: all 2021 Transit engines | S2342 | 🇲🇽 MX | blackConnector Shape: Square | View on Amazon |
This table covers the harness connectors at the Trunk / Cargo Area Lamp. 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 Trunk / Cargo Area Lamp Connector parts are listed for the 2021 Ford Transit, from HOLSTEIN and STANDARD MOTOR PRODUCTS. All of them fit every engine offered in the 2021 Transit.
This group includes HOLSTEIN 2HAR0035 and STANDARD MOTOR PRODUCTS S2342.
Turbocharger Boost Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 2.0L L4 DIESEL Turbocharged | 645247 | 🇲🇽 MX | 3 Cavity | View on Amazon |
This table covers the harness connectors at the Turbocharger Boost 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: DORMAN 645247.
Valve Body Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 2.0L L4 DIESEL Turbocharged, 3.5L V6 | S2421 | 🇲🇽 MX | Connector Shape: Square | View on Amazon |
This table covers the harness connectors at the Valve Body. 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 Ford Transit — STANDARD MOTOR PRODUCTS S2421.
Washer Pump Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 2.0L L4 DIESEL Turbocharged, 3.5L V6 | 645144 | 🇲🇽 MX | 2 Cavity | 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 Ford Transit — DORMAN 645144.
Buying Electrical Connector Parts for a 2021 Ford Transit
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 Brake Switch Connector and A/C Compressor Clutch Coil Connector .
Frequently Asked Questions
How many electrical connector parts fit the 2021 Ford Transit?
Our catalog currently lists 38 electrical connector parts for the 2021 Ford Transit across 27 subcategories and 3 brands, covering all 3 engine options (2.0L L4 DIESEL Turbocharged, 3.5L V6 and 999cc L3 Turbocharged). Each part is matched to the engine(s) it fits.
Do electrical connector parts differ between 2021 Ford Transit engines?
Some do. 16 parts fit every engine; the other 22 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 Ford Transit?
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 Ford Transit 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 Ford Transit?
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 Ford Transit
Electrical Connector Parts for Other Ford Transit Years
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