Product Description
Cummins 3914284 — Lift Pump Spacer Plate (Fuel Heater Delete)
MPN: 3914284 | Also Known As: mounting spacer, lift pump spacer plate | Use Case: Required when removing the factory fuel pre-heater/strainer on 12-valve 5.9L.
Why This Part
- ✓ Direct-fit spacer for mechanical lift pump mounting when deleting the OE fuel heater/strainer.
- ✓ Designed for 12-valve 5.9L second-gen applications (see fitment).
- ✓ Restores proper sealing & spacing of the lift pump to the timing case.
- ✓ Genuine Cummins quality for reliable fuel system service.
Quick Specs
| Type | Lift pump mounting spacer (fuel heater delete) |
|---|---|
| OE Part # | 3914284 |
| Qty Required | 1 per engine (sold individually) |
| Common Pairings | Lift pump 4988747 · Gasket 3939258 (see “Often Paired With”) |
Verified Fitment (Automotive)
| Year Range | Engine | Chassis |
|---|---|---|
| 1994–1998 | Ram 5.9L 12-Valve (Mechanical Lift Pump) | Ram 2500/3500 |
Notes: Commonly used when deleting the OE fuel pre-heater/strainer on 12-valve trucks. Industrial 6BT applications may also use this spacer—verify by ESN.
Often Paired With
- Mechanical lift pump: Cummins 4988747
- Lift pump gasket: Cummins 3939258
- Heater delete hardware/gaskets: kits may include 3931059 gaskets and studs (varies by kit)
What’s In The Box
- (1) Genuine Cummins Lift Pump Spacer Plate (3914284)
- Gaskets/hardware sold separately (see “Often Paired With”).
Install Tips
- Clean mating surfaces; use new gaskets and correct hardware.
- Torque per factory spec; check for leaks after priming.
- If converting from heater/strainer, ensure electrical connectors are secured/terminated as needed.
FAQ
WILL THIS FIT MY 1994–1998 12-VALVE 5.9L CUMMINS?Yes—this spacer is used on 12-valve Rams with the mechanical lift pump when the fuel heater/strainer is removed (verify by VIN/ESN).
WHY DO I NEED A SPACER WHEN DELETING THE FUEL HEATER?The OE heater/strainer adds thickness between the pump and timing case. When it’s removed, this spacer restores the proper stand-off and sealing.
DOES THIS INCLUDE GASKETS OR STUDS?No—order the lift pump gasket (3939258) and any required studs/fasteners separately, or use a complete heater-delete hardware kit.
IS THIS A GENUINE CUMMINS PART?Yes—OE Cummins 3914284 for correct fit and durability.
WILL THIS WORK ON INDUSTRIAL 6BT ENGINES?Often, yes—but industrial configurations vary. Verify by ESN and pump mounting stack-up.
