CUMMINS FLYWHEEL 3906807 | 8.3L C SERIES ENGINE Maximize your fleet’s uptime with this premium Platinum Driveline heavy-duty flywheel. Specifically engineered for the Cummins 8.3L C Series engine platform, this component is designed to meet the rigorous demands of both commercial automotive applications and heavy-duty industrial equipment. Manufactured to exacting OEM specifications, it ensures seamless torque transfer and long-term durability in high-stress environments. Verified Casting & Part Numbers OE#: 3906807 INTERCHANGES: 3284102, 3906808, 3908574, 3973495 Technical Specifications Engine Application: Cummins 8.3L C Series Bore Diameter: 7.25-inch bore size Disc Outside Diameter: 14″ Ring Gear Teeth: 173 Ring Gear #: 3903309 Mounting Holes: 8 Locating Holes: 0 Pilot Bearing #: 206SS / 305SS Condition: New Aftermarket (No Core Charge) Expert Installation & Field Note Drawing from our shop experience specializing in heavy-duty drivetrains since 1985, the Cummins 8.3L C Series requires a clean, burr-free crankshaft flange for a proper seat. Because this unit has 0 locating holes, technician attention to center alignment during the initial 8-bolt mounting is vital. We recommend a cross-pattern torque sequence to ensure even pressure and prevent lateral runout, which can lead to premature clutch wear. Verify your 173-tooth ring gear matches your current starter drive configuration before final assembly. CRITICAL: Verify Specifications Please confirm your original casting number and engine model match these specifications. The 7.25-inch bore size and 173-tooth ring gear are essential for proper fitment and safe vehicle operation. Shipping Note: All flywheel orders are drop-shipped directly to ensure the fastest delivery. We are not responsible for carrier delays and cannot guarantee that overnight orders will ship the same day. Note: Prices shown are for online orders only. SKU: 168110
