Product Description
Get precise oil-clearance control on rebuilt Cummins bottom ends with the MAHLE CB-1873AP-.75MM Connecting Rod Bearing Set for 2003–2018 5.9L/6.7L ISB. This A-Series pair (.75 mm undersize) is engineered for ground journals, combining an aluminum-silicon lower with a tri-metal upper for OE-grade fatigue resistance, stable crush, and excellent wear in workhorse and tow applications.
Fitment
- 2003–2007 Ram 2500/3500 — 5.9L Cummins (24-valve, fractured-cap rods)
- 2007.5–2018 Ram 2500/3500 — 6.7L Cummins (24-valve, fractured-cap rods)
Cross-Reference / Related Mahle Items (internal links only)
- Mahle CB-1873AP (STD): CB-1873AP (STD)
- Mahle CB-1873AP-.25MM: CB-1873AP-.25MM
- Mahle CB-1873AP-.50MM: CB-1873AP-.50MM
- Mahle MS-2328P-.75MM Main Bearing Set: MS-2328P-.75MM
What’s Included
- One pair (2 shells) of connecting rod bearings — .75 mm undersize
- Quantity needed per engine: 6 pairs (one per rod)
FAQ
Is this a full engine set?
No. Sold per rod journal (pair). You’ll need six pairs for a complete inline-six.
When do I use .75 mm undersize?
When the crank rod journals have been ground .75 mm under. Always mic journals and check clearance with plastigage or bore gauge.
What construction is this?
A-Series bi-metal (aluminum-silicon) lower with a tri-metal upper overlay for balanced durability and seizure resistance in tow/work builds.
Can I mix sizes?
Yes—journal-to-journal as needed. Never mix sizes on the same journal.
Specifications for Mahle CB-1873AP-.75MM
| Attribute | Value |
|---|---|
| Brand | Mahle / Clevite |
| Part Number | CB-1873AP-.75MM (MPN: CB1873AP75MM) |
| UPC | 027067890443 |
| GTIN | 00027067890443 |
| Engine Compatibility | 2003–2018 Cummins ISB 5.9L/6.7L (fractured-cap rods) |
| Size | .75 mm undersize |
| Pack Quantity | Pair (2 shells); 6 pairs required per engine |
| Shipping | Calculated at checkout |
| Prop 65 | See www.P65Warnings.ca.gov. |
