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Our office will be closed 9/7/2026 in observance of Labor Day. Orders placed during this time will be processed when our office opens 9/8/2026.

Our office will be closed 9/7/2026 in observance of Labor Day. Orders placed during this time will be processed when our office opens 9/8/2026.

Cummins 3901774 Flywheel Ring Gear

Compatible With 4B 3.9, 4.5, 6B 5.9, and ISB 6.7 Engines

Genuine Cummins Part

Base price: $348.64
$306.80
i h
Not Returnable

PRODUCT NOTES

This is a genuine Cummins part shipped with a 12-month warranty.

Also available in aftermarket.


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FLYWHEEL RING GEAR - 4B 3.9 / B 4.5 / 6B 5.9 / ISB 6.7

$62.59