Product Description
Cummins 3928898 — P7100 Injection Pump Support Bracket (Fuel Pump Brace)
MPN: 3928898 | Also Known As: fuel pump brace, injection pump support bracket, P-pump brace | Location: Block-to-pump brace for P7100 mechanical injection pump
Why This Part
- ✓ OE support bracket that stabilizes the P7100 (“P-pump”) to reduce vibration and stress.
- ✓ Direct-fit for 1994–1998 Ram 5.9L 12-valve (6BT) with P7100 mechanical pump.
- ✓ Prevents mount fatigue and gear train misalignment under load.
- ✓ Durable OE steel construction for long service life.
Quick Specs
| Type | P7100 injection pump support bracket / fuel pump brace |
|---|---|
| OE Part # | 3928898 |
| Material | Steel |
| Qty Required | 1 per engine (sold individually) |
Verified Fitment (Automotive)
| Year Range | Engine | Chassis |
|---|---|---|
| 1994–1998 | Ram 5.9L 6BT 12-Valve with P7100 (“P-pump”) | Ram 2500/3500 |
Industrial/Off-Highway: Listed by Cummins as a fuel pump brace for Non-Certified B-Series 5.9 applications; always verify by ESN.
Often Paired With
- P7100 Gear Nut / Washer: 3920921 (nut), 3920922 (lock washer)
- P7100 Gear: 3931382
- Oil Feed / Return Lines: 3923083 (feed), 3923171 (return)
What’s In The Box
- (1) Genuine Cummins P7100 Injection Pump Support Bracket / Fuel Pump Brace (3928898)
- Mounting hardware is typically reused or sourced separately.
Install Tips
- Support the P7100 during service to avoid gear/bearing stress.
- Hand-start bolts; torque to factory spec to prevent distortion.
- After installation, inspect pump alignment and check for vibration at idle and under load.
FAQ
WILL THIS FIT MY 1994–1998 12-VALVE CUMMINS?Yes—this is the OE P7100 support bracket for 1994–1998 Ram 2500/3500 5.9L 12V with the mechanical P7100 injection pump.
WILL THIS WORK ON COMMON-RAIL (2003+) ENGINES?No—this part is for P7100-equipped 12-valve engines only (1994–1998). Common-rail ISB engines do not use this brace.
WHAT DOES THIS BRACKET DO?It braces the P7100 to the engine block to reduce vibration and loading, helping prevent mounting ear fatigue and gear train misalignment.
IS THIS A GENUINE CUMMINS PART?Yes—OE Cummins 3928898 (also described by Cummins as a Fuel Pump Brace).
DO I NEED ANYTHING ELSE WHEN INSTALLING?Inspect related hardware (gear nut/washer) and lines; replace worn components during service for best results.
