Product Description
The CUMMINS 3914284 OEM LIFT PUMP SPACER PLATE is the genuine Cummins solution for 1994–1998 Dodge Ram 2500/3500 trucks equipped with the 5.9L 12-valve Cummins and a mechanical transfer (lift) pump. This precision-machined spacer plate replaces the factory fuel heater/strainer housing and provides the correct mounting height and sealing surface for the mechanical lift pump when performing a fuel heater delete or refreshing the P7100 fuel system.
Unlike generic flat plates, this Cummins 3914284 spacer is engineered specifically for the B-Series 5.9L Cummins, ensuring proper pump alignment, reliable gasket sealing, and long-term durability. Pair it with a new OEM mechanical transfer pump and associated hard lines to stabilize fuel supply, reduce aeration, and help protect your P7100 injection pump under load.
Fitment – CUMMINS 3914284 OEM LIFT PUMP SPACER PLATE
- Vehicle: Dodge/Ram 2500 & 3500
- Engine: 5.9L Cummins 12-valve (6BT), P7100-equipped
- Model Years: 1994, 1995, 1996, 1997, 1998 (2nd Gen)
- Location: Block mounting pad for mechanical transfer (lift) pump
- Function: Replaces factory fuel heater/strainer assembly; sets correct lift pump spacing
This spacer plate is typically used when:
- Deleting the factory fuel heater/strainer assembly on 94–98 12-valve trucks.
- Installing a new Cummins mechanical transfer (lift) pump.
- Converting from an electric lift pump back to a mechanical P7100-style lift pump.
Cross-Reference & Related Cummins Fuel System Parts
For a complete, leak-free service on your 1994–1998 5.9L 12-valve Cummins fuel system, consider pairing CUMMINS 3914284 with these related genuine parts available from CPP Diesel:
- CUMMINS 4988747 OEM MECHANICAL FUEL TRANSFER LIFT PUMP – 5.9L 12V (1994–1998) – New OE mechanical lift pump for P7100-equipped trucks.
- CUMMINS 3931523 OEM FUEL LIFT PUMP ELBOW HOSE – 5.9L 12-VALVE (1994–1998) – Molded fuel elbow from heater/plate area to the mechanical lift pump.
- CUMMINS 3918880 FUEL SUPPLY TUBE – LIFT PUMP TO FILTER – 5.9L 12V (1994–1998) – Hard line from the mechanical lift pump outlet to the fuel filter housing.
Additional cross-reference (for reference only, not Cummins-branded): PAI 180121 (fuel pump spacer for 5.9L B-Series Cummins).
Why Choose Genuine Cummins 3914284 from CPP Diesel?
- Genuine Cummins OEM part – not a flat generic plate.
- Proper thickness and geometry for P7100 mechanical lift pump alignment.
- Direct-fit for 1994–1998 5.9L 12-valve Ram applications.
- Ideal when upgrading or servicing the fuel heater/strainer area.
- Backed by CPP Diesel’s diesel-specialist support and fast shipping.
Specifications
| Specifications for cummins 3914284 | |
|---|---|
| Brand | Cummins Genuine Parts |
| Part Number | 3914284 |
| Product Type | Lift Pump Mounting Spacer Plate |
| Engine Platform | 5.9L B-Series Cummins, 12-valve (P7100) |
| Primary Application | 1994–1998 Dodge/Ram 2500 & 3500 with 5.9L 12-valve Cummins |
| UPC | 193807144814 |
| GTIN | 193807144814 |
| Cross Reference | PAI 180121 (fuel pump spacer) |
| E-Codes / Emissions | Not emission-controlling; hardware/spacer component |
| Material | Machined steel mounting plate |
| Approximate Ship Weight | 0.14 lb (0.06 kg) |
| Shipping Info | Ships from CPP Diesel; standard ground shipping on in-stock items |
| Prop 65 | No specific Prop 65 warning identified for this part; handle per normal shop practices |
Install Tips
- Clean the block mounting surface thoroughly to remove old gasket material and debris.
- Use a new lift pump gasket compatible with your pump and spacer stack-up.
- Torque mounting hardware to factory specifications to avoid leaks or warping.
- Prime the fuel system after installation and inspect for leaks before road testing.
FAQ – CUMMINS 3914284 LIFT PUMP SPACER PLATE
WILL THIS SPACER PLATE FIT ALL 1994–1998 5.9L 12-VALVE TRUCKS?Yes. CUMMINS 3914284 is designed for 1994–1998 Dodge/Ram 2500 and 3500 trucks equipped with the 5.9L 12-valve Cummins and a P7100 mechanical injection pump. Always verify by VIN/engine serial number if your truck has been heavily modified.
WHEN DO I NEED TO USE THE 3914284 SPACER?
You need this spacer when you remove the factory fuel heater/strainer assembly and wish to retain or install a mechanical lift pump. It provides the proper spacing and sealing surface between the block and the lift pump, preventing leaks and misalignment.
WHICH LIFT PUMP WORKS WITH THIS SPACER PLATE?
The spacer is commonly used with the CUMMINS 4988747 OEM MECHANICAL FUEL TRANSFER LIFT PUMP on 1994–1998 5.9L 12-valve Ram trucks. Other lift pumps that follow the OEM footprint and mounting height can also be used, but always confirm compatibility with the manufacturer.
WHAT OTHER PARTS SHOULD I REPLACE WHILE I AM THERE?
While servicing the lift pump area, many owners also replace the CUMMINS 3931523 FUEL LIFT PUMP ELBOW HOSE and the CUMMINS 3918880 FUEL SUPPLY TUBE (LIFT PUMP TO FILTER) to eliminate old, brittle hoses and hard lines. This helps ensure a clean, leak-free fuel supply to the P7100.
IS THIS A GENUINE CUMMINS PART OR AFTERMARKET?
This is a Genuine Cummins OEM spacer plate sourced through CPP Diesel. If you prefer aftermarket alternatives for other components in the system, you can still use this genuine spacer with your chosen pump and gasket.
