Rod Bearing Duramax 6.6L LP5

The Rod Bearing Duramax 6.6L LP5 is a precision engine component engineered for the 2017–2025 GM Duramax diesel platform. Heavy-duty boaters and anglers who depend on diesel-powered vessels understand that engine reliability isn't negotiable—whether you're running offshore for stripers or cruising inland waterways, bearing failure means downtime measured in thousands of dollars. This OEM-spec connecting rod bearing maintains critical oil film strength under the extreme load cycles that modern diesel engines generate, especially in marine applications where sustained RPM and throttle demand peak performance.

Manufactured by MAHLE ORIGINAL/CLEVITE under specification CB2030P50MM, this bearing is precision-ground to a 0.25 mm undersize tolerance, ensuring optimal clearance and load distribution across the crankshaft journal. The bearing's multi-layer construction—combining steel backing with copper-lead or tin-aluminum facing—provides superior conformability and embedability, critical properties that absorb shock loads from combustion pressure spikes and sudden throttle transitions. At just 0.24 lbs, the compact 2.4 x 1.3 x 3.25 in profile fits the exacting dimensional requirements of the LP5 engine block, maintaining the precise bearing clearance (typically 0.001–0.002 inch) that sustains hydrodynamic lubrication and prevents metal-to-metal contact during operation.

Marine diesel operators performing rod bearing replacement on 2017–2025 Duramax 6.6L engines will recognize the P-series designation, which specifies compatibility with stock Duramax connecting rods. Installation requires precise torque specification and proper bearing orientation—the oil groove must align with the connecting rod journal supply hole to maintain continuous lubrication flow under peak power delivery. Whether you're undertaking a full engine rebuild or replacing worn bearings detected through borescope inspection, this MAHLE ORIGINAL component meets OEM specifications and restores bearing load capacity to factory performance levels, essential for maintaining the reliability marine propulsion systems demand.