Product Description
Genuine Cummins
Cummins 4891179 — Connecting Rod Cap Screw / Rod Bolt
MPN: 4891179 | Also Known As: connecting rod bolt, rod cap screw | Sold: Individually (12 required per engine; 2 per rod)
Why This Part
- ✓ Critical bottom-end fastener to clamp the rod cap to the rod.
- ✓ Direct-fit for 2003–2018 Ram 5.9L & 6.7L ISB applications (verify by VIN/ESN).
- ✓ OE metallurgy & thread form for reliable clamping force.
- ✓ Ideal for stock rebuilds, bearing service, and preventative maintenance.
OE Fit 12 Per Engine Sold Individually
Quick Specs
| Type | Connecting rod cap screw (rod bolt) |
|---|---|
| OE Part # | 4891179 |
| Qty Required | 12 per engine (2 per connecting rod) |
| Install Method | Torque + angle per Cummins service manual (replace any stretched/damaged bolts) |
Verified Fitment (Automotive)
| Year Range | Engine | Chassis |
|---|---|---|
| 2003–2007 | Ram 5.9L ISB (24V Common-Rail) | Ram 2500/3500 |
| 2007.5–2018 | Ram 6.7L ISB (24V Common-Rail) | Ram 2500/3500 |
Industrial/Off-Highway: Used primarily on EPA13 6.7L ISB/QSB variants—always confirm by ESN.
Often Paired With
- Connecting rod bearings (5.9L/6.7L, size as required)
- Engine assembly lube for proper fastener torque/angle procedure
- Oil & filter service after bottom-end work
What’s In The Box
- (1) Genuine Cummins Connecting Rod Cap Screw / Rod Bolt (4891179)
- Sold individually—order quantity 12 for a complete engine set.
Install Tips
- Follow Cummins torque + angle spec; use clean, lightly oiled threads if specified.
- Do not reuse bolts that exceed length spec, show thread damage, or signs of yielding.
- Maintain rod/rod-cap pairing and orientation during assembly.
FAQ
HOW MANY ROD BOLTS ARE IN A 5.9L/6.7L CUMMINS?There are 12 total—2 bolts per connecting rod. This part is sold individually.
IS 4891179 REUSABLE?Always measure and inspect. Cummins specifies torque-and-angle; replace any bolt that is stretched, damaged, or outside length spec. Many builders replace bolts during rebuilds.
WILL THIS FIT MY 2003–2018 RAM?Yes—this is the OE rod cap screw used across 2003–2007 5.9L and 2007.5–2018 6.7L ISB applications (verify by VIN/ESN).
IS THIS SOLD AS A SET OR INDIVIDUALLY?Individually. Order quantity 12 to complete all six rods.
IS THIS A GENUINE CUMMINS PART?Yes—OE Cummins 4891179 with the correct geometry and thread pitch.
Product Videos
Custom Field
Vehicle Year 2003+
Vehicle Make DODGE
ENGINE 5.9L / 6.7L CUMMINS
