Product Description
Cummins 4942278 — Fuel Injector Return Line Banjo Seal / Washer
MPN: 4942278 | Also Known As: banjo connector seal, return line sealing washer | Use: Injector return/fuel drain manifold sealing washer (sold individually)
Why This Part
- ✓ OE sealing washer for the injector return/banjo connection on 12-valve 5.9L.
- ✓ Direct-fit replacement to stop seepage and restore proper fuel return flow.
- ✓ Genuine Cummins part for reliable, leak-free service.
- ✓ Sold individually so you can order exactly what you need.
Quick Specs
| Type | Fuel injector return line banjo seal / sealing washer |
|---|---|
| OE Part # | 4942278 |
| Qty Required | As needed (sold individually) |
| Common Companions | Banjo bolt 3905307 · Return line 3926103 (see “Often Paired With”) |
Verified Fitment (Automotive)
| Year Range | Engine | Chassis |
|---|---|---|
| 1994–1998 | Ram 5.9L Cummins 12-Valve (P-Pump) | Ram 2500/3500 |
Notes: Many industrial/non-certified 5.9L B-series applications also use this banjo connector seal. For 1989–1993 VE-pump trucks, confirm by VIN/ESN or match to the existing return line assembly before ordering.
Often Paired With
- Banjo Bolt: Cummins 3905307 (1989–1998 5.9L)
- Return Line: Cummins 3926103 (1994–1998 5.9L)
- Shop towels, brake-clean, and fresh copper/rubber seals as needed
What’s In The Box
- (1) Genuine Cummins Banjo Connector Seal / Return Line Washer (4942278)
Install Tips
- Depressurize the fuel system and clean the area before removal.
- Replace sealing washers anytime the banjo is loosened; follow OE torque specs.
- Prime the system and check carefully for leaks on restart.
FAQ
WILL THIS FIT MY 1994–1998 5.9L 12-VALVE RAM?Yes—this is the genuine banjo/return line sealing washer for 1994–1998 Dodge Ram 2500/3500 with 5.9L 12-valve (verify by VIN/ESN).
IS THIS THE CORRECT BANJO WASHER FOR THE INJECTOR RETURN LINE?Yes—this washer seals the injector return (fuel drain manifold) banjo connection on the 12-valve 5.9L.
HOW MANY WASHERS DO I NEED?Quantity varies by connection—order as needed. Replace any time the banjo is removed to ensure leak-free reassembly.
WHAT PARTS ARE COMMONLY REPLACED WITH THIS?Banjo bolt 3905307 and the return line 3926103 are commonly paired components.
IS THIS A GENUINE CUMMINS PART?Yes—OE Cummins 4942278 for proper fit and sealing performance.
