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Main Bearing Set 1.00mm Oversize Cummins 3945921 | 3800274, 3802214, 4309368
Restore your engine’s crankshaft stability with this premium 1.00mm oversize main bearing set, engineered for maximum durability and precise clearance in heavy-duty Cummins engines.
Description
High-Performance Main Bearing Set (1.00mm Oversize) for Cummins Engines
Ensure optimal crankshaft support and reduce internal friction with this premium 1.00mm (.040″) oversize main bearing set. Specifically engineered for heavy-duty Cummins C-Series, ISC, ISL, QSC, and QSL engines, this set is designed to restore proper oil clearance and engine stability after the crankshaft journal has been ground down by 1.00mm.
Key Features & Benefits
- Precise Fitment: Manufactured to exact tolerances to ensure perfect oil clearance and reliable oil pressure.
- Heavy-Duty Durability: Constructed from high-fatigue-strength materials to withstand extreme combustion pressures and high-load operations.
- Complete Engine Kit: Includes a full set of main bearings and thrust bearings required for a complete engine overhaul.
Technical Specifications (Standard Reference)
- Oversize Rating: +1.00 mm (+0.040 in)
- Standard Journal Diameter: 97.988 mm – 98.013 mm
- Standard Housing Bore: 104.980 mm – 105.018 mm
- Bearing Width: 32.10 mm
- Thrust Bearing Width: 42.87 mm
Compatible Engine Models
- Cummins 6CT 8.3, 6CTA 8.3, 6CTAA 8.3
- Cummins ISC 8.3
- Cummins ISL 8.3, ISL 8.9, ISL 9, ISL 9.3, ISL 9.5, ISL G
- Cummins QSC 8.3
- Cummins QSL 8.9, QSL 9, QSL 9.3
Note: Please verify your engine’s crankshaft journal measurements before ordering. Unpacked bearings or those showing signs of installation are not eligible for return.
