Product Description
Cummins 3905707 — VE Injection Pump Fuel Return Line (Overflow / Fuel Drain Tube)
MPN: 3905707 | Also Known As: fuel drain tube, overflow/return line, injection pump return line | Application Focus: 5.9L 12V VE (’89–’91 non-intercooled)
Why This Part
- ✓ Direct-fit OE line from the VE injection pump back to the return tee.
- ✓ Correct routing & flow helps maintain proper idle and fuel system pressure.
- ✓ Built to Cummins spec for sealing at banjo interfaces and long service life.
- ✓ Exact-first-gen coverage for 1989–1991 non-intercooled 5.9L VE engines.
Quick Specs
| Type | Fuel injection pump return / overflow line (VE) |
|---|---|
| OE Part # | 3905707 |
| Interfaces | Banjo fittings (12 mm sealing washers typically required; sold separately) |
| Qty Required | 1 per engine (sold individually) |
Verified Fitment (Automotive)
| Year Range | Engine | Chassis |
|---|---|---|
| 1989–1991 | 5.9L 12V VE (non-intercooled) | Dodge D/W 250 & 350 (1st-Gen Ram) |
Notes: For non-intercooled 1989–1991 VE applications only. Will not fit 1991.5–1993 intercooled pumps (different line). Always verify by VIN/ESN.
Often Paired With
- Banjo sealing washers: 12 mm copper washers (sold separately)
- Banjo bolts / return tee: replace if damaged or corroded
- Fresh fuel filter: after repair or if contamination was present
What’s In The Box
- (1) Genuine Cummins VE Injection Pump Fuel Return Line (3905707)
- Sealing washers & hardware sold separately (see “Often Paired With”).
Install Tips
- Use new 12 mm sealing washers on banjo connections.
- Torque banjo bolts to factory spec; check for leaks at idle and after a road test.
- Prime the fuel system if opened; verify smooth idle and return flow.
FAQ
WILL THIS FIT 1991.5–1993 INTERCOOLED TRUCKS?No—this line is for 1989–1991 non-intercooled VE pumps only. Intercooled (’91.5–’93) uses a different return line.
IS THIS THE LINE FROM THE VE PUMP TO THE RETURN TEE?Yes—this is the overflow/return line that runs from the VE injection pump back to the return tee at the rear of the block.
DOES IT INCLUDE BANJO WASHERS OR BOLTS?No—order 12 mm sealing washers (and bolts if needed) separately to ensure proper sealing.
IS THIS A GENUINE CUMMINS PART?Yes—OE Cummins 3905707 for exact fit and durability.
WHAT ARE COMMON SYMPTOMS OF A BAD RETURN LINE?Fuel leaks at banjo joints, unstable idle, or fuel smell near the pump. Replace promptly and use new washers.
