LS9 Flywheel – 14″ OD


  • Outside diameter 14″
  • 9-bolt crank flange bolt pattern
  • 10″ clutch diameter (dual disc)
  • 2009 and Newer LS9 engines
SKU: 12598613 Categories: ,

LS9 Flywheel – 14″ OD

P/N 12598613

LS9 Production with 9-bolt crankshaft flange.

Year of Engine: 2009 and newer
Outside Diameter: 14″
Crank Flange Bolt Pattern: 9-bolt
Clutch Diameter: 10″ Dual Disc
Starter Ring Gear Teeth: 168

Note: It is critical you use the correct design for your engine application.


LS9 Flywheel – 14″ OD

12598613 Chevrolet Flywheel

2009 and Newer LS9

At the opposite end of the crankshaft from the balancer are flywheels and flexplates, which connect the engine to either manual (flywheels) or automatic (flexplates) transmissions. Chevrolet Performance offers both internally and externally balanced flywheels and flexplates.

Prop65WARNING: These auto parts can expose you to chemicals including phthalates and lead. Installing or using these parts can expose you to other parts containing these chemicals and to engine exhaust, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to