MAHLE CB-1805HK-.25MM H-SERIES ROD BEARING (.25MM) FOR 2001-2016 GM 6.6L DURAMAX ENGINE

The MAHLE CB-1805HK-.25MM is a high-performance H-Series connecting rod bearing designed for the 2001–2016 GM 6.6L Duramax diesel engines (LB7, LLY, LBZ, LMM, LML). This bearing is engineered to accommodate a 0.25mm undersized crankshaft journal, making it suitable for engines with slightly worn or reground crankshaft surfaces.

Specifications

• Part Number: CB-1805HK-.25MM

• Type: H-Series Performance Connecting Rod Bearing

• Undersize: 0.25mm

• Material: Tri-metal construction with a hardened steel back and overlay

• Design Features:

  • Enhanced load-carrying capacity

  • High crush for secure seating

  • Medium eccentricity for improved oil distribution

  • Flash plating-free for optimal seating

• Dimensions:

  • Length: Approximately 1.2250 inches

  • Wall Thickness: Maximum 0.0775 inches

  • Vertical Oil Clearance: Maximum 0.0045 inches

• Warranty: 12 months

• Manufactured in: United States
  

Vehicle Fitment

The MAHLE CB-1805HK-.25MM bearing is compatible with the following GM vehicles equipped with the 6.6L Duramax diesel engine:

• Chevrolet Silverado 2500HD/3500HD (2001–2016)

• GMC Sierra 2500HD/3500HD (2001–2016)

• Chevrolet Express 2500/3500 (2001–2016)

• GMC Savana 2500/3500 (2001–2016)

The MAHLE CB-1805HK-.25MM H-Series Rod Bearing stands out as a premium choice for those seeking performance and durability in their 2001–2016 GM 6.6L Duramax diesel engines. Specifically designed for the LB7, LLY, LBZ, LMM, and LML engine variants, this connecting rod bearing caters to applications requiring a 0.25mm undersized crankshaft journal. This feature makes it ideal for engines that have experienced slight wear or reconditioning on crankshaft surfaces, providing a reliable solution to maintain optimal engine performance.

Constructed using tri-metal technology, the MAHLE bearing boasts a hardened steel back and overlay, ensuring remarkable strength and longevity under extreme conditions. Its design incorporates enhanced load-carrying capacity, medium eccentricity for superior oil distribution, and a high crush factor for secure seating. Additionally, the bearing is flash plating-free, allowing for optimal contact and wear characteristics.

With dimensions tailored for efficiency, including a length of approximately 1.2250 inches and a wall thickness of up to 0.0775 inches, the MAHLE CB-1805HK-.25MM guarantees a precise fit within the engine assembly. The vertical oil clearance measure allows for an impressive maximum of 0.0045 inches, which helps maintain the proper lubrication essential for peak performance.

This product not only enhances engine integrity but also supports a vehicle's longevity. Backed by a 12-month warranty and proudly manufactured in the United States, the MAHLE CB-1805HK-.25MM provides peace of mind alongside its exceptional performance capabilities. Suitable for various GM models, including the Chevrolet Silverado, GMC Sierra, and Express, the MAHLE CB-1805HK-.25MM is your go-to option for restoring power to your Duramax diesel engine.