2021 Ram Promaster 2500 Electrical Connector Parts: OEM & Replacement (54 Parts)

This page lists 54 electrical connector parts for the 2021 Ram Promaster 2500, across 24 part types, covering the 3.6L V6 engine. Every part shows its brand, manufacturer part number and fitment notes.

The connector system on the 2021 Ram Promaster 2500 supplies the pigtails and connector bodies that terminate the vehicle harness at lamps, sensors and modules. The largest groups are Trailer Connector (12 parts), Door Wiring Harness / Connector (6 parts) and Blower Motor Control Module / Resistor Connector (3 parts). The other 21 part types cover the remaining 33 parts.

A/C Refrigerant Pressure Switch Connector

Brand	Part Number	Markets	Notes	Buy
HOLSTEIN	2HAR0060	🇺🇸 US 🇨🇦 CA 🇲🇽 MX		View on Amazon
STANDARD MOTOR PRODUCTS	S2316	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	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.

ABS Wheel Speed Sensor Connector

Brand	Part Number	Markets	Notes	Buy
HOLSTEIN	2HAR0036	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	Includes ABS Wheel Speed Sensor Wire Harness Fitment notes — HOLSTEIN 2HAR0036 Includes ABS Wheel Speed Sensor Wire Harness Front	View on Amazon
STANDARD MOTOR PRODUCTS	S2403	🇺🇸 US 🇨🇦 CA 🇲🇽 MX		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.

Air Intake / Charge Temperature Sensor Connector

Brand	Part Number	Markets	Notes	Buy
STANDARD MOTOR PRODUCTS	S2492	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	Intake Air	View on Amazon
WELLS	1P4264	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	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.

Blind Spot Detection Sensor Connector

Brand	Part Number	Markets	Notes	Buy
STANDARD MOTOR PRODUCTS	S2507	🇺🇸 US 🇨🇦 CA 🇲🇽 MX		View on Amazon

This table covers the harness connectors at the Blind Spot Detection 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.

Blower Motor Control Module / Resistor Connector

Brand	Part Number	Markets	Notes	Buy
GPD	1713423	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	Blower Motor Resistor Pigtailwith 4 Terminal(s) Fitment notes — GPD 1713423 Blower Motor Resistor Pigtailwith 4 Terminal(s)with Flat Connector	View on Amazon
HOLSTEIN	2HAR0052	🇺🇸 US 🇨🇦 CA 🇲🇽 MX		View on Amazon
STANDARD MOTOR PRODUCTS	S1573	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	Connector Shape: Rectangle	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.

Camshaft Position Sensor Connector

Brand	Part Number	Markets	Notes	Buy
WELLS	1P2668	🇺🇸 US 🇨🇦 CA 🇲🇽 MX		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.

Crankshaft Position Sensor Connector

Brand	Part Number	Markets	Notes	Buy
WALKER PRODUCTS	2701145	🇺🇸 US 🇨🇦 CA 🇲🇽 MX		View on Amazon
WELLS	1P2704	🇺🇸 US 🇨🇦 CA 🇲🇽 MX		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.

Cruise Control Distance Sensor Connector

Brand	Part Number	Markets	Notes	Buy
STANDARD MOTOR PRODUCTS	S2863	🇺🇸 US 🇨🇦 CA 🇲🇽 MX		View on Amazon

This table covers the harness connectors at the Cruise Control Distance 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.

Door Wiring Harness / Connector

Brand	Part Number	Markets	Notes	Buy
MOPAR Popular	68460701AB	🇺🇸 US 🇨🇦 CA	Rear Door Wiring Fitment notes — MOPAR 68460701AB Rear Door Wiring Fits: 24V VVT Engine.Rear Hinged DoorsExc. Rear Window Defroster113 WB or: 24V VVT Engine.Rear Hinged DoorsExc. Rear Window Defroster119 WB or: 24V VVT Engine.Rear Hinged DoorsExc. Rear Window Defroster2 door Convertibl or: 24V VVT Engine.Rear Hinged DoorsExc. Rear Window DefrosterCab Chassis Wheelbas or: 24V VVT Engine.Rear Hinged DoorsExc. Rear Window DefrosterClub Cab 2 door 8' Boxor 24V VVT Engine.Rear Hinged DoorsExc. Rear Window DefrosterQuad Cab 4DR 8' Box/3-DR Hatchor 24V VVT Engine.Rear Hinged DoorsExc. Rear Window DefrosterVan Wheelbas or: 24V VVT Engine.Rear Hinged DoorsExc. Rear Window DefrosterGlazed Van	View on Amazon
MOPAR Popular	68460501AA	🇺🇸 US 🇨🇦 CA	Rear Door Wiring Fitment notes — MOPAR 68460501AA Rear Door Wiring Fits: 24V VVT Engine.Rear Hinged DoorsExc. Rear Window Defroster113 WB or: 24V VVT Engine.Rear Hinged DoorsExc. Rear Window Defroster119 WB or: 24V VVT Engine.Rear Hinged DoorsExc. Rear Window Defroster2 door Convertibl or: 24V VVT Engine.Rear Hinged DoorsExc. Rear Window DefrosterCab Chassis Wheelbas or: 24V VVT Engine.Rear Hinged DoorsExc. Rear Window DefrosterClub Cab 2 door 8' Boxor 24V VVT Engine.Rear Hinged DoorsExc. Rear Window DefrosterQuad Cab 4DR 8' Box/3-DR Hatchor 24V VVT Engine.Rear Hinged DoorsExc. Rear Window DefrosterVan Wheelbas or: 24V VVT Engine.Rear Hinged DoorsExc. Rear Window DefrosterGlazed Van	View on Amazon
MOPAR	68169389AG	🇺🇸 US 🇨🇦 CA	Sliding Do Fitment notes — MOPAR 68169389AG Sliding Do or: Left Wiring Fits: Left Sliding Door with No Glass or: Left Sliding Door with Fixed Glass or: Left Sliding Door with Polycarbonate Window119 WB or: Left Sliding Door with No Glass or: Left Sliding Door with Fixed Glass or: Left Sliding Door with Polycarbonate Window2 door Convertibl or: Left Sliding Door with No Glass or: Left Sliding Door with Fixed Glass or: Left Sliding Door with Polycarbonate WindowVan Wheelbas or: Left Sliding Door with No Glass or: Left Sliding Door with Fixed Glass or: Left Sliding Door with Polycarbonate WindowGlazed Van	View on Amazon
MOPAR	68233678AF	🇺🇸 US 🇨🇦 CA	Sliding Do Fitment notes — MOPAR 68233678AF Sliding Do or: Left Wiring Fits: Left Sliding Door with No Glass or: Left Sliding Door with Fixed Glass or: Left Sliding Door with Polycarbonate WindowVan Wheelbas or: Left Sliding Door with No Glass or: Left Sliding Door with Fixed Glass or: Left Sliding Door with Polycarbonate Window113 WB	View on Amazon
MOPAR	68460700AB	🇺🇸 US 🇨🇦 CA	Rear Door Wiring Fitment notes — MOPAR 68460700AB Rear Door Wiring Fits: 24V VVT Engine.Rear Hinged Doors, Rear Window Defroster113 WB or: 24V VVT Engine.Rear Hinged Doors, Rear Window Defroster119 WB or: 24V VVT Engine.Rear Hinged Doors, Rear Window Defroster2 door Convertibl or: 24V VVT Engine.Rear Hinged Doors, Rear Window DefrosterCab Chassis Wheelbas or: 24V VVT Engine.Rear Hinged Doors, Rear Window DefrosterClub Cab 2 door 8' Boxor 24V VVT Engine.Rear Hinged Doors, Rear Window DefrosterQuad Cab 4DR 8' Box/3-DR Hatchor 24V VVT Engine.Rear Hinged Doors, Rear Window DefrosterVan Wheelbas or: 24V VVT Engine.Rear Hinged Doors, Rear Window DefrosterGlazed Van	View on Amazon
MOPAR	68461500AA	🇺🇸 US 🇨🇦 CA	Rear Door Wiring Fitment notes — MOPAR 68461500AA Rear Door Wiring Fits: 24V VVT Engine.Rear Hinged Doors, Rear Window Defroster113 WB or: 24V VVT Engine.Rear Hinged Doors, Rear Window Defroster119 WB or: 24V VVT Engine.Rear Hinged Doors, Rear Window Defroster2 door Convertibl or: 24V VVT Engine.Rear Hinged Doors, Rear Window DefrosterCab Chassis Wheelbas or: 24V VVT Engine.Rear Hinged Doors, Rear Window DefrosterClub Cab 2 door 8' Boxor 24V VVT Engine.Rear Hinged Doors, Rear Window DefrosterQuad Cab 4DR 8' Box/3-DR Hatchor 24V VVT Engine.Rear Hinged Doors, Rear Window DefrosterVan Wheelbas or: 24V VVT Engine.Rear Hinged Doors, Rear Window DefrosterGlazed Van	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.

Engine Block Heater Connector

Brand	Part Number	Markets	Notes	Buy
MOPAR	68194731AC	🇺🇸 US 🇨🇦 CA	Fits 24V VVT Engine.Engine Block Heater Fitment notes — MOPAR 68194731AC Fits: 24V VVT Engine.Engine Block Heater119 WB or: 24V VVT Engine.Engine Block HeaterVan Wheelbas or: 24V VVT Engine.Engine Block Heater113 WB or: 24V VVT Engine.Engine Block HeaterCab Chassis Wheelbas or: 24V VVT Engine.Engine Block HeaterClub Cab 2 door 8' Boxor 24V VVT Engine.Engine Block HeaterGlazed Vanor 24V VVT Engine.Engine Block HeaterQuad Cab 4DR 8' Box/3-DR Hatchor 24V VVT Engine.Engine Block Heater2 door Convertible	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.

Engine Wiring Harness / Connector

Brand	Part Number	Markets	Notes	Buy
MOPAR	68477729AB	🇺🇸 US 🇨🇦 CA	24V VVT Engine.A/C	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.

Fog / Driving Lamp Connector

Brand	Part Number	Markets	Notes	Buy
MOPAR	4727679AA	🇺🇸 US 🇨🇦 CA	Jumper Wiring Fitment notes — MOPAR 4727679AA Jumper Wiring Fits: FRONT FOG LAMPS113 WB or: FRONT FOG LAMPS119 WB or: FRONT FOG LAMPSVan Wheelbase or: Front Fog Lamps2 door Convertible or: Front Fog LampsCab Chassis Wheelbase or: Front Fog LampsClub Cab 2 door 8' Box or: Front Fog LampsQuad Cab 4DR 8' Box/3-DR Hatch or: Front Fog LampsGlazed Van	View on Amazon
MOPAR	4727679AB	🇺🇸 US 🇨🇦 CA	Jumper Wiring Fitment notes — MOPAR 4727679AB Jumper Wiring Fits: FRONT FOG LAMPS113 WB or: FRONT FOG LAMPS119 WB or: FRONT FOG LAMPSVan Wheelbase or: Front Fog Lamps2 door Convertible or: Front Fog LampsCab Chassis Wheelbase or: Front Fog LampsClub Cab 2 door 8' Box or: Front Fog LampsQuad Cab 4DR 8' Box/3-DR Hatch or: Front Fog LampsGlazed Van	View on Amazon

This table covers the harness connectors at the Fog / Driving 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.

Fuel Injector Connector

Brand	Part Number	Markets	Notes	Buy
GB REMANUFACTURING	5191	🇺🇸 US 🇨🇦 CA 🇲🇽 MX		View on Amazon
MOPAR	5148037AM	🇺🇸 US 🇨🇦 CA	Fits 24V VVT Engine.119 WB Fitment notes — MOPAR 5148037AM Fits: 24V VVT Engine.119 WB or: 24V VVT Engine.2 Door Convertibl or: 24V VVT Engine.Van Wheelbas or: 24V VVT Engine.113 WB or: 24V VVT Engine.Cab Chassis Wheelbas or: 24V VVT Engine.Club Cab 2 door 8' Boxor 24V VVT Engine.Glazed Vanor 24V VVT Engine.Quad Cab 4DR 8' Box/3-DR Hatch	View on Amazon
WELLS	1P2047	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	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.

Knock / Detonation Sensor Connector

Brand	Part Number	Markets	Notes	Buy
STANDARD MOTOR PRODUCTS	S2860	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	Connector Shape: OvalGauge: 16 Gauge Fitment notes — STANDARD MOTOR PRODUCTS S2860 Connector Shape: OvalGauge: 16 GaugeHarness LengthInches: 13Terminal Type: Bladeblack	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.

Manifold Pressure (MAP) Sensor Connector

Brand	Part Number	Markets	Notes	Buy
STANDARD MOTOR PRODUCTS	S2916	🇺🇸 US 🇨🇦 CA 🇲🇽 MX		View on Amazon

This table covers the harness connectors at the Manifold Pressure (MAP) 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.

Oil Pressure Sender / Switch Connector

Brand	Part Number	Markets	Notes	Buy
HOLSTEIN	2HAR0060	🇺🇸 US 🇨🇦 CA 🇲🇽 MX		View on Amazon
STANDARD MOTOR PRODUCTS	S2316	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	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.

Oil Temperature Sender Connector

Brand	Part Number	Markets	Notes	Buy
STANDARD MOTOR PRODUCTS	S2442	🇺🇸 US 🇨🇦 CA 🇲🇽 MX		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.

Park Assist (PAS) Camera Connector

Brand	Part Number	Markets	Notes	Buy
METRA	AXACCH6	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	Camera Add-On Package	View on Amazon

This table covers the harness connectors at the Park Assist (PAS) Camera. 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.

Power Door Lock Connector

Brand	Part Number	Markets	Notes	Buy
MOPAR	68550907AA	🇺🇸 US 🇨🇦 CA	Connector Plate Fitment notes — MOPAR 68550907AA Connector Plate Fits: 24V VVT Engine.2 door Convertible6-Speed Automatic 62TE Transmission or: 24V VVT Engine.119 WB6-Speed Automatic 62TE Transmission or: 24V VVT Engine.113 WB6-Speed Automatic 62TE Transmission or: 24V VVT Engine.Van Wheelbase6-Speed Automatic 62TE Transmission or: 24V VVT Engine.Glazed Van6-Speed Automatic 62TE Transmission	View on Amazon
MOPAR	68100641AB	🇺🇸 US 🇨🇦 CA	Connector Plate Fitment notes — MOPAR 68100641AB Connector Plate Fits: Left Sliding Door with No Glass or: Left Sliding Door with Fixed Glass or: Left Sliding Door w Polycarb Window2 door Convertibl or: Left Sliding Door with No Glass or: Left Sliding Door with Fixed Glass or: Left Sliding Door w Polycarb Window119 WB or: Left Sliding Door with No Glass or: Left Sliding Door with Fixed Glass or: Left Sliding Door w Polycarb Window113 WB or: Left Sliding Door with No Glass or: Left Sliding Door with Fixed Glass or: Left Sliding Door w Polycarb WindowVan Wheelbas or: GLAZED VAN	View on Amazon

This table covers the harness connectors at the Power Door Lock. 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.

Trailer Adapter Connector

Brand	Part Number	Markets	Notes	Buy
CURT	57101	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	7-Way Round RV To 4-Way Flat Adapter Fitment notes — CURT 57101 7-Way Round RV To 4-Way Flat Adapter with Back Up AlarmGM/Ford Plugwith Factory Tow Package	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.

Trailer Connector

Brand	Part Number	Markets	Notes	Buy
CURT Popular	56415	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	Replacement 7-Way RV Blade OEM SocketTwist-In Fitment notes — CURT 56415 Replacement 7-Way RV Blade OEM SocketTwist-In with Factory Tow Package	View on Amazon
CURT Popular	55415	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	Replacement 7-Way RV Blade OEM Socket Fitment notes — CURT 55415 Replacement 7-Way RV Blade OEM Socket with Factory Tow Package	View on Amazon
CURT Popular	56229	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	7-Way USCAR Electrical ConnectorLength: 24 in. Fitment notes — CURT 56229 7-Way USCAR Electrical ConnectorLength: 24 in.Bonded Wire with Factory Tow Package	View on Amazon
CURT	55515	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	Custom Wiring ConnectorOE 4-Way Flat Fitment notes — CURT 55515 Custom Wiring ConnectorOE 4-Way FlatPlugs Into USCAR Replacement2-Wire Systemwith Factory Tow Package	View on Amazon
CURT	56515	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	Custom Wiring Connector5-Way Flat Fitment notes — CURT 56515 Custom Wiring Connector5-Way Flat 2-Wire Systemwith Factory Tow Package	View on Amazon
CURT	55774	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	OEM Vehicle to Trailer Connector with Harness7-Way and 4-Way Fitment notes — CURT 55774 OEM Vehicle to Trailer Connector with Harness7-Way and 4-Way with Factory Tow Package	View on Amazon
CURT	57015	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	OEM Replacement Dual-Output 7 and 4 Way ConnectorPlugs Into USCAR Socket	View on Amazon
CURT	55384	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	Custom Wiring Connector4-Way Flat Fitment notes — CURT 55384 Custom Wiring Connector4-Way FlatRetains Use of 7 Way Round Connector 2-Wire Systemwith Factory Tow Package	View on Amazon
CURT	57020	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	OEM Replacement Dual-Output 7 and 4 Way ConnectorPackaged Fitment notes — CURT 57020 OEM Replacement Dual-Output 7 and 4 Way ConnectorPackaged Factory TowPlugs Into USCAR	View on Amazon
CURT	56584	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	Custom Wiring Harness5-Way Flat Fitment notes — CURT 56584 Custom Wiring Harness5-Way FlatRetains Use Of 7-Way OEM 2-Wire Systemwith Factory Tow Package	View on Amazon
CURT	56209	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	Custom Wiring Harness4-Way Flat Fitment notes — CURT 56209 Custom Wiring Harness4-Way Flat 3-Wire System	View on Amazon
CURT	56478	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	Custom Wiring Harness4-Way Flat Output	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.

Trailer Extension Connector

Brand	Part Number	Markets	Notes	Buy
CURT	56475	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	Custom Wiring Harness Extension Fitment notes — CURT 56475 Custom Wiring Harness Extension 20"Uscar To Uscarwith Factory Tow Package	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.

Vapor Canister Purge Valve / Solenoid Connector

Brand	Part Number	Markets	Notes	Buy
STANDARD MOTOR PRODUCTS	HP4325	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	HandypackConnector Shape: Rectangle Fitment notes — STANDARD MOTOR PRODUCTS HP4325 HandypackConnector Shape: RectangleHarness Length16-1/2 "Terminal Type: Blade	View on Amazon
STANDARD MOTOR PRODUCTS	S1024	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	Connector Shape: RectangleHarness Length Fitment notes — STANDARD MOTOR PRODUCTS S1024 Connector Shape: RectangleHarness Length16-1/2 "Terminal Type: Blade	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.

Vapor Leak Detection Pump Connector

Brand	Part Number	Markets	Notes	Buy
STANDARD MOTOR PRODUCTS	HP4325	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	HandypackConnector Shape: Rectangle Fitment notes — STANDARD MOTOR PRODUCTS HP4325 HandypackConnector Shape: RectangleHarness Length16-1/2 "Terminal Type: Blade	View on Amazon
STANDARD MOTOR PRODUCTS	S1024	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	Connector Shape: RectangleHarness Length Fitment notes — STANDARD MOTOR PRODUCTS S1024 Connector Shape: RectangleHarness Length16-1/2 "Terminal Type: Blade	View on Amazon
WELLS	1P2044	🇺🇸 US 🇨🇦 CA 🇲🇽 MX		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.

Buying Electrical Connector Parts for a 2021 Ram Promaster 2500

On this vehicle, the connector system supplies the pigtails and connector bodies that terminate the vehicle harness at lamps, sensors and modules.

Confirm you have the 3.6L V6 engine — every part on this page is matched to it.
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 Door Wiring Harness / Connector .

Frequently Asked Questions

How many electrical connector parts fit the 2021 Ram Promaster 2500?

Our catalog currently lists 54 electrical connector parts for the 2021 Ram Promaster 2500 across 24 subcategories and 9 brands, covering the 3.6L V6 engine. Each part is matched to the engine(s) it fits.

What are the signs of electrical connector problems on a 2021 Ram Promaster 2500?

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 Promaster 2500 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 Promaster 2500?

Every part on this page is matched to the 3.6L V6 engine. 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 Promaster 2500

Belt Drive Body & Lamp Assembly Brake & Wheel Hub Cooling System Drivetrain Electrical Electrical Bulb & Socket Electrical Switch & Relay Engine Exhaust & Emission Fuel & Air Heat & Air Conditioning Ignition Interior Steering Suspension Automatic Transmission Wheel Wiper & Washer

Electrical Connector Parts for Other Ram Promaster 2500 Years

2026 Ram Promaster 2500 2025 Ram Promaster 2500 2024 Ram Promaster 2500 2023 Ram Promaster 2500 2022 Ram Promaster 2500 2020 Ram Promaster 2500 2019 Ram Promaster 2500 2018 Ram Promaster 2500 2017 Ram Promaster 2500 2016 Ram Promaster 2500 2015 Ram Promaster 2500 2014 Ram Promaster 2500

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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.

Published by AutoFactsDB from manufacturer application data. How fitment is matched Report a fitment error