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Main Bearing Set 0.75mm (.030″) Cummins 3801263 | AR7113, AR7243, 171723
Ensure optimal crankshaft support and engine longevity with this premium 0.75mm (.030″) oversize Cummins main bearing set. Engineered for high load-carrying capacity, it provides superior fatigue resistance under extreme operating conditions.
Description
Premium Crankshaft Support for Cummins Engines
The Cummins 3801263 Main Bearing Set is a high-performance, 0.75mm (.030″) oversize bearing kit designed to restore proper crankshaft clearance and ensure smooth engine operation. Engineered specifically for heavy-duty applications, this set provides the durability and reliability required to withstand extreme thermal and mechanical stresses.
Key Features & Benefits
- Superior Material Composition: Constructed from high-strength sintered tri-metal alloy (copper, lead, and tin) with a nickel barrier and Babbitt top layer, offering exceptional load-carrying capacity.
- Enhanced Fatigue Resistance: Designed to prevent premature wear and fatigue under extreme operating conditions, extending the service life of your engine.
- Complete Kit: Includes 7 regular main bearing shells, 4 individual thrust washers, and lock plates for a comprehensive overhaul.
- Precise Fitment: Manufactured to exact dimensional tolerances for a seamless installation and perfect oil clearance.
Engine Compatibility
This main bearing set is compatible with the following Cummins heavy-duty diesel engines:
- Cummins N14 (including Non-Certified 14-liter variants)
- Cummins NT855 / NTA855
- Cummins NH220
Specifications
- Part Number: 3801263
- Oversize: 0.75 mm / .030 in
- Journal Diameter Range: 4.4690″ – 4.4700″ (114.275 mm – 114.300 mm)
