GM FLYWHEEL 12574404 | 7.0L / 7.2L / 8.1L ENGINE Restore your vehicle’s drivetrain performance with this premium Platinum Driveline heavy-duty flywheel. Specifically engineered for GM 7.0L, 7.2L, and 8.1L engines, this component is designed to meet the rigorous demands of both commercial automotive fleets and heavy-duty equipment. Manufactured to exacting OEM specifications, it ensures consistent torque transfer and long-term durability in high-stress environments. Verified Casting & Part Numbers OE#: 12574404 Technical Specifications Engine Application: GM 7.0L / 7.2L / 8.1L Bore Diameter: 6-inch bore size Disc Outside Diameter: 13″ Ring Gear Teeth: 197 Mounting Holes: 6 Locating Holes: 0 Pilot Bearing #: 305SS Condition: New Aftermarket (No Core Charge) Expert Installation & Field Note Drawing from our shop experience specializing in heavy-duty drivetrains since 1985, the GM 8.1L and related big-block platforms require a perfectly clean crankshaft flange to prevent runout. Since this unit has 0 locating holes, technician precision during the initial 6-bolt mounting is vital to ensure proper centering. We recommend using a star-pattern torque sequence to maintain even pressure across the 6-inch bore interface. Always verify your starter drive matches the 197-tooth ring gear configuration before completing the installation. CRITICAL: Verify Specifications Please confirm your original casting number and engine model match these specifications. Accurate 6-inch bore size and mounting hole alignment 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: 168401
