Product Description
The Cummins 4891179 OEM Connecting Rod Cap Screw is the exact factory-engineered fastener used to secure the connecting rod cap to the connecting rod on 2003–2018 Cummins ISB 5.9L & 6.7L engines. Engine builders rely on genuine Cummins hardware because precision fastener clamping force is critical during high-load operation. This rod bolt delivers OE metallurgy, OE heat-treat standards, and OE torque-to-yield uniformity—ensuring your rotating assembly maintains proper bearing crush and alignment under extreme duty cycles.
FITMENT
- 2003–2007 Dodge Ram 2500/3500 – 5.9L Cummins ISB
- 2007.5–2018 Dodge/Ram 2500/3500 – 6.7L Cummins ISB
- Direct replacement for Cummins part number: 4891179
CROSS-REFERENCE / RELATED CUMMINS PRODUCTS
- Cummins 4891178 OEM Connecting Rod Nut
- Cummins 4892698 OEM Connecting Rod Assembly
- Cummins Main Bearing Cap Bolt (68005456AA)
FAQ
Is this the same connecting rod bolt used by Cummins during factory engine assembly?
Yes. The 4891179 rod cap screw is a genuine Cummins OEM component manufactured to the exact torque-to-yield and metallurgy requirements used in new engine production.
Should these rod bolts be replaced during an engine rebuild?
Yes. These fasteners are torque-to-yield and should always be replaced when removed to ensure proper clamp load and bearing alignment.
Do these bolts require factory torque specifications?
Absolutely. Always follow Cummins ISB torque + angle procedures. Incorrect fastener torque can lead to engine failure.
Are these bolts compatible with both 5.9L and 6.7L connecting rods?
Yes. Cummins engineered the 4891179 rod bolt to be cross-platform compatible for ISB 5.9L (’03–’07) and ISB 6.7L (’07.5–’18).
Do you ship these individually or as a set?
These are sold individually. Most rebuilds require a full set of 12 bolts for all six rods.
Specifications for cummins 4891179
| Specification | Value |
|---|---|
| Brand | Cummins Genuine Parts |
| Part Number | 4891179 |
| UPC | Not published by Cummins |
| GTIN | 00628945962441 (sourced) |
| Cross Reference | Used with rod nut 4891178 |
| E-Codes | N/A |
| Shipping Info | Ships via USPS/UPS – small parcel |
| Prop 65 | Refer to Prop 65 information |
