Description

This flywheel is designed for Cummins B Series engines and replaces OEM part number 3921263. It delivers balanced engine rotation and precise clutch alignment for efficient power transfer. Manufactured from heat-treated, high-strength materials and built to OEM specifications, this flywheel guarantees long-term durability, a perfect fit, and simple installation in medium-duty commercial and industrial diesel engine applications. Application: Aftermarket Cummins Flywheels B Series – 5.9L Design: Flat Mounting: 8 Bolt Holes Size: SAE #2 Clutch: 14″ Ring Gear: 3903309 17″ O.D. – 173 Teeth Pilot Bearing: 61.93 mm Cross Reference Numbers: 3921264 4933458 3901395 – Flywheel Bolt 3900269 – Bolt Washer Key Features OEM replacement for Cummins 3921263 Fits Cummins B Series 3.9L/5.9L engines Provides accurate clutch engagement and smooth rotation Heat-treated for durability and strength OEM-style fit for quick and easy installation Compatibility Cummins B Series 3.9L Engines Cummins B Series 5.9L Engines OEM Replacement Part #: 3921263