The 1981 Fiat 124 has 17 electrical connector parts with verified fitment on this page — 5 part types and 8 brands, covering the 2.0L L4 engine. Each part includes a manufacturer part number and application notes.
On the 1981 Fiat 124, 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 Fuel Injector Connector (6 parts), Throttle Position Sensor (TPS) Connector (5 parts) and Radiator Fan Switch Connector (4 parts). The other 2 part types cover the remaining 2 parts.
The 1981 Fiat 124 came with a single engine, the 2.0L L4, and every part is verified against it.
8 brands supply electrical connector parts for the 1981 Fiat 124, led by STANDARD MOTOR PRODUCTS (8 parts), UNITED MOTOR PRODUCTS (2 parts) and ACDELCO (2 parts), plus 5 more brands.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 1981 Fiat 124. 3 parts have it, including STANDARD MOTOR PRODUCTS HP3980 (Fuel Injector Connector) and WELLS 1P1421 (Throttle Position Sensor (TPS) Connector). Each part number opens a page with every vehicle that part fits.
Fuel Injector Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular | HP3980 | 🇺🇸 US 🇨🇦 CA | HandypackConnector Shape: Rectangular | View on Amazon |
| UNITED MOTOR PRODUCTS Popular | CON201 | 🇺🇸 US 🇨🇦 CA | with Quick Release Clipwith 2 Female Terminals | View on Amazon |
| ACDELCO | PT2384 | 🇺🇸 US 🇨🇦 CA | GoldShape: Rectangle | View on Amazon |
| GB REMANUFACTURING | 5194 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| HOLSTEIN | 2HAR0055 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| STANDARD MOTOR PRODUCTS | SK25 | 🇺🇸 US 🇨🇦 CA | Connector Shape: RectangularGauge: 20 Gauge | 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.
6 Fuel Injector Connector parts for the 1981 Fiat 124 come from 5 brands — STANDARD MOTOR PRODUCTS, UNITED MOTOR PRODUCTS, ACDELCO and 2 other brands. The "Popular" part is STANDARD MOTOR PRODUCTS HP3980.
Listed part numbers: STANDARD MOTOR PRODUCTS HP3980, UNITED MOTOR PRODUCTS CON201 and ACDELCO PT2384, plus the other parts above.
Oil Pressure Sender / Switch Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS | S1634 | 🇺🇸 US 🇨🇦 CA | Black | 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.
One part is listed for the 1981 Fiat 124 — STANDARD MOTOR PRODUCTS S1634.
Radiator Fan Switch Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO | TC346 | 🇺🇸 US 🇨🇦 CA | Gold | View on Amazon |
| STANDARD MOTOR PRODUCTS | HP5310 | 🇺🇸 US 🇨🇦 CA | Handy PackBlack | View on Amazon |
| STANDARD MOTOR PRODUCTS | TC23 | 🇺🇸 US 🇨🇦 CA | Black | View on Amazon |
| STANDARD MOTOR PRODUCTS | TC43634 | 🇺🇸 US 🇨🇦 CA | Black | View on Amazon |
This table covers the harness connectors at the Radiator Fan 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.
4 Radiator Fan Switch Connector parts are listed for the 1981 Fiat 124, from STANDARD MOTOR PRODUCTS and ACDELCO.
Part numbers include ACDELCO TC346, STANDARD MOTOR PRODUCTS HP5310 and STANDARD MOTOR PRODUCTS TC23, among others listed above.
Throttle Position Sensor (TPS) Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS Popular | 1P1421 | 🇺🇸 US 🇨🇦 CA | Wiring Harness Length: 9.43 In | View on Amazon |
| ROSTRA | 610105 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| STANDARD MOTOR PRODUCTS | HP3975 | 🇺🇸 US 🇨🇦 CA | Handy PackBlack | View on Amazon |
| STANDARD MOTOR PRODUCTS | S745 | 🇺🇸 US 🇨🇦 CA | Connector Shape: Rectangleblack | View on Amazon |
| UNITED MOTOR PRODUCTS | CON149 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the harness connectors at the Throttle Position Sensor (TPS). 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 Position Sensor (TPS) Connector parts are listed for the 1981 Fiat 124, from STANDARD MOTOR PRODUCTS, WELLS, ROSTRA and 1 other brand. WELLS 1P1421 carries the "Popular" badge.
Listed part numbers: WELLS 1P1421, ROSTRA 610105 and STANDARD MOTOR PRODUCTS HP3975, plus the other parts above.
Washer Pump Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WAI GLOBAL | 399002 | 🇺🇸 US 🇨🇦 CA | AccessoryUniversal Switch for Washer Pump System | 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.
This group shows a single part: WAI GLOBAL 399002.
Buying Electrical Connector Parts for a 1981 Fiat 124
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 2.0L L4 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: Fuel Injector Connector and Throttle Position Sensor (TPS) Connector .
Frequently Asked Questions
How many electrical connector parts fit the 1981 Fiat 124?
Our catalog currently lists 17 electrical connector parts for the 1981 Fiat 124 across 5 subcategories and 8 brands, covering the 2.0L L4 engine. Each part is matched to the engine(s) it fits.
What are the signs of electrical connector problems on a 1981 Fiat 124?
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 1981 Fiat 124 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 1981 Fiat 124?
Every part on this page is matched to the 2.0L L4 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 1981 Fiat 124
Electrical Connector Parts for Other Fiat 124 Years
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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.