2-Pin 2.8mm Bosch EV1 Fuel Injector Waterproof Connector – OEM 1928403878
Direct OEM-specification replacement for the Bosch 2-pin fuel injector connector used on EV1-style (Bosch) fuel injectors across a wide range of European and Asian vehicle platforms. Cross-references Bosch OEM part number 1928403878. Uses the 2.8mm contact series in white nylon housing with waterproof sealing — the EV1 (Bosch) injector connector is one of the most widely used fuel injector connectors in the automotive industry, fitted to port injection systems from the 1980s to 2010s.
A failed injector connector causes a cylinder misfire (P0300–P0308), rough running, and increased fuel consumption. The plastic locking tab fractures over time, allowing the connector to work loose from the injector body. On high-mileage vehicles, the EV1 connector terminals corrode, causing high resistance and injector pulse width errors.
| OEM Number | Application |
|---|---|
| 1928403878 | Bosch EV1 2-pin fuel injector connector (universal) |
| Pin | Function | Failure Symptom if Open |
|---|---|---|
| 1 | Injector power supply (12V, switched) | Injector inoperative, cylinder misfire P0300–P0308 |
| 2 | ECM injector control (ground-side switching) | Injector inoperative, misfire |
| Attribute | Detail |
|---|---|
| Pin Count | 2-Pin |
| Contact Series | 2.8mm pitch (Bosch EV1 series) |
| Housing Material | Nylon, white |
| Sealing | Waterproof |
| OEM Part Number | 1928403878 |
| Applications | Port fuel injector (EV1 / Bosch style), universal fit |
| Compatible Injector Types | Bosch EV1, Siemens Deka (EV1 footprint), Denso (EV1 footprint) |
| Compatible Vehicles | VW / Audi (1.8T / 2.0 / 2.8 V6); BMW (M40/M43/M50/M52/M54); Mercedes-Benz (M111/M112/M113); Volvo (B5254/B6294); Honda / Toyota / Nissan (EV1 footprint variants) |
| Terminal Included | Yes |
Q: How do I know if my injector uses the EV1 connector?
A: The EV1 connector has a rectangular 2-pin housing with a side-entry locking tab. It is the most common fuel injector connector on port injection systems from the 1980s to 2010s. Cross-reference OEM part number 1928403878 or measure the contact pitch (2.8mm).
Q: Are terminals included?
A: Yes, terminals are included with all variants.
Be the first to know about new collections and special offers.
2 Pin Connectors
