Product Description
CUMMINS 3945707 OEM FUEL DRAIN TUBE (VP44 RETURN LINE) – RAM 5.9L (1998.5–2002)
This is the genuine Cummins OEM fuel drain / return tube — part # 3945707 — designed specifically for 1998.5-2002 5.9L 24-valve (VP44) Dodge Ram 2500/3500 trucks. Includes the factory grommet seal and nut for a direct-fit installation. Banjo sealing washers (14 mm) are sold separately. This direct-fit line restores proper fuel return routing from the VP44 injection pump to the tee fitting, ensuring leak-free, OEM-spec performance and durability under heavy diesel use. Use on VP44-equipped trucks only — not compatible with common-rail systems introduced after 2002.
Fitment
- 1998.5–2002 Dodge Ram 2500 / 3500 5.9L 24-valve Cummins (VP44)
- Direct replacement for original factory return tube from VP44 injection pump to tee fitting
Includes
- (1) Genuine Cummins 3945707 fuel drain / return tube
- (1) Grommet seal
- (1) Nut
Note
14 mm banjo sealing washers are not included and must be purchased separately for proper installation.
Cross-Reference / Related Return Line Parts
- CUMMINS 3942966 OEM FUEL RETURN LINE
- CUMMINS 3942592 OEM FUEL RETURN LINE
- CUMMINS 3905353 FUEL RETURN TEE FITTING
FAQ
WILL THIS FIT MY 1998.5–2002 5.9L VP44 RAM?
Yes — this is the OEM VP44 return line for 1998.5-2002 Dodge Ram 2500/3500 5.9L 24-valve trucks. Always verify by VIN/ESN before ordering.
WHAT DOES THIS LINE CONNECT?
This tube routes fuel from the VP44 injection pump back to the fuel return tee fitting on the engine.
WHAT HARDWARE IS INCLUDED?
Includes grommet seal and nut. Banjo sealing washers (14 mm) are sold separately.
IS THIS A GENUINE CUMMINS PART?
Yes — this is the OEM Cummins 3945707 part, built to factory spec for correct fitment, material, and durability.
WILL THIS WORK ON COMMON-RAIL (2003+) TRUCKS?
No — this line is specific to VP44-equipped 5.9L engines. Common-rail trucks (2003+) require different fuel return components.
| Specification | Detail |
|---|---|
| Part Number | 3945707 |
| Item Type | Fuel Drain / Return Tube (VP44 → Tee) |
| Included Hardware | Grommet seal & nut (banjo washers sold separately) |
| Fitment | 1998.5–2002 Dodge Ram 5.9L 24V (VP44) |
| Qty Required | 1 per engine |
| Shipping Info / Dimensions | 6″ × 6″ × 6″ (approx), ships calculated at checkout from CPP Diesel ≈ 0.3 lb package weight :contentReference[oaicite:1]{index=1} |
| GTIN / UPC | (not provided) — use part number 3945707 for lookup |
| Cross Reference | 3942966, 3942592, 3905353 |
| Prop 65 | Not applicable / Not listed |