Persistent clutch wear or input shaft failure? The culprit isn't always the transmission. The M20107 Cummins Flywheel Housing Redoweling Kit is the definitive tool to correct hidden concentricity errors.

The High Stakes of Housing Alignment

On heavy-duty Cummins platforms like the NT, NH, N14, and ISX series, the flywheel housing serves as the structural foundation for the entire transmission interface. Over millions of road miles, harsh powertrain vibrations and massive torque cycles cause the factory dowel pin bores to wear down or stretch out of round. Even a microscopic misalignment of the flywheel housing relative to the crankshaft centerline will throw the transmission input shaft out of alignment, resulting in shredded pilot bearings, rapid clutch failure, and severe crankshaft thrust load damage. The M20107 kit provides an unyielding, mechanical correction system to restore perfect OEM geometry.

• Comprehensive Reaming System – Comes equipped with precision .514, .561, and .623 reamers to correctly oversized damaged holes.
• True Concentric Realignment – Re-establishes the exact factory locating references between the block and the engine housing.
• Eliminate Costly Comebacks – Direct solution for recurring pilot bearing failures, input shaft wear, and structural drivetrain vibration.
2026 Fleet Standard Design – Engineered to perform under real-world conditions during both in-frame and out-of-frame overhauls.
• Built for Heavy Shops – A rugged 10.00 lbs specialty kit constructed out of premium materials for continuous professional field service.

Stop Swapping Parts. Fix the Root Cause.

The M20107 Flywheel Housing Redoweling Kit is a fundamental diagnostic and correction tool for commercial fleets, independent engine builders, and heavy truck powertrain specialists. Stop guessing with dial indicators alone—drill, ream, and lock down your housing with total accuracy.

---