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The M20107 Cummins Flywheel Housing Redoweling Kit restores precise dowel bore locations between flywheel housing and engine block on NT, NH, N14, ISX-series engines. Includes .514 / .561 / .623 reamers—prevents clutch wear, transmission misalignment, pilot bearing failure, and crankshaft thrust issues in heavy-duty rebuilds.

The Critical Risks of Misaligned Flywheel Housing in Cummins Engines

Worn or elongated dowel bores in Cummins NT, NH, N14, ISX engines cause flywheel housing misalignment, leading to vibration, premature wear, and expensive drivetrain failures.

• Clutch wear – Misalignment accelerates clutch failure, costing $1,200–$3,000 replacements
• Transmission damage – Input shaft wear, requiring $2,000–$5,000 repairs
• Pilot bearing failure – Off-center load destroys bearings, leading to $800–$2,000
• Crank thrust issues – Excessive end play damages thrust surfaces, totaling $3,000–$7,000
• Downtime losses – Undiagnosed misalignment grounds trucks, costing $500–$2,000/day
• Full rebuild – Severe vibration cascades to complete overhaul ($10,000–$25,000)

What is the M20107 Flywheel Housing Redoweling Kit?

The M20107 Cummins Flywheel Housing Redoweling Kit – Heavy-Duty Alignment & Repair Tool is a precision alignment system that re-establishes OEM dowel bore locations on Cummins NT, NH, N14, ISX engines. Includes .514 / .561 / .623 reamers and mounting components.

Designed for rebuild shops, it guides accurate re-drilling and boring, ensuring perfect crankshaft-to-housing alignment—reducing misalignment-related failures by 80% and protecting expensive drivetrain components.

Complete Kit Specifications & Cummins Compatibility

Professional Features & Drivetrain Repair Benefits

Economic Impact: Flywheel Housing Alignment ROI

Scenario	Cost Impact
M20107 proper alignment	Redoweling kit – $730.76 investment
Clutch replacement	$1,200–$3,000
Transmission repair	$2,000–$5,000
Pilot bearing failure	$800–$2,000
Crank thrust repair	$3,000–$7,000
Total misalignment cost	$7,000–$17,000 per incident
M20107 ROI (first prevention)	10–23X return on investment

When Cummins Technicians Choose M20107

• Cummins NT/NH/N14 flywheel housing alignment
• ISX-series dowel bore restoration
• Heavy-duty drivetrain realignment
• Clutch/transmission wear prevention
• Engine rebuild shops
• Fleet maintenance
• Pilot bearing protection

Why Professional Shops Trust M20107

Rebuilders trust the M20107 for its precision reaming, guided alignment, and ability to avoid $7,000–$17,000 in drivetrain damages per misalignment. It delivers OEM-accurate results, faster repairs, and durability shops demand.

From NT to ISX overhauls, this kit keeps drivetrains centered and strong.

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