Flywheel Locking Tool Kit

Save 19%

$84.99 $104.99


Replace Your Water Pump Easier!

"Worked perfectly to hold the flywheel so I could torque the new crank bolt on my engine after new balancer install.” - Craig Foley

Why Buy Our 6.6L Duramax Flywheel Locking Tool Kit?

✅REPLACE: Make your job easier when replacing your vehicle’s water pumps with our Flywheel Locking Tool Kit as it locks the flywheel in place when removing the harmonic balancer on 6.6L Duramax engines with Allison automatic transmissions alongside a 36mm 12-point socket with 3/4 square drive to remove harmonic balancer bolt and retorque on installation.

✅DESIGN: This saves time by locking the flywheel at the transmission instead of having to remove the starter for water pump replacement. The 36mm 12-point socket can also be used on axle nuts making it more versatile than other sockets and overall it can handle the torque needed to remove a stubborn harmonic balancer bolt.

❗ Reminder ❗

  • On 2500 and 3500 pickups, remove the metal spring-loaded inspection plate on the bottom of the transmission. The tool should slide into the opening toward the engine with the top of the tool engaging the teeth of the flywheel. On 4500 and 5500 trucks, remove the rubber inspection cap on the bottom of the transmission.

📋Frequently Asked Questions:

Q: Will this work on a Chevy Express with a Duramax that does not have an Allison?

A: No, it will not.

Q: Does it come with the 36mm 12-point socket

A: Yes, it does.


  • Color: Black
  • Engine Compatibility: 6.6L Duramax with Allison automatic transmissions 
  • Socket: 36mm 12-point socket with 3/4" square drive
  • Item Weight: ‎1.45 pounds 
  • Product Dimensions: 4 x 3 x 3 inches

    Package Inclusions:

  • 1x Socket
  • 1x Socket Head Cap Screw 
  • 1x P/U Flywheel Lock
  • 1x 4500/5500 Flywheel Lock


    Payment & Security

    Apple Pay Google Pay PayPal Venmo

    Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.