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Securing your vehicle's flywheel is crucial for preventing accidental starts and ensuring safety during maintenance. A reliable flywheel lock provides peace of mind and protects against potential hazards. Choosing the right lock depends on your specific needs and vehicle type.
COMPATIBLE WITH RWD GM LS AND LT ENGINES: Designed for many 1997–2019 rear-wheel-drive GM V8 LS and LT-based engines, including LS1, LS2, LS3, LS6, LSX and 4.8L, 5.3L, 5.7L, 6.0L, 6.2L and 7.0L applications. Also fits select Gen V LT1, LT4, L83 and L...
HEAVY-DUTY 1/4-INCH USA STEEL CONSTRUCTION: Made from 1/4-inch cold-rolled steel and TIG welded for strength and dependable performance during demanding engine service. The black oxide finish helps resist surface corrosion and protects the tool during...
SIMPLE TWO-BOLT STARTER-LOCATION INSTALLATION: Remove the starter, position the LS flywheel holder over the starter mounting location, and secure it with the two included proper-length grade 8.8 bolts. The locking section engages the ring gear without...
HOLDS THE CRANKSHAFT DURING HIGH-TORQUE SERVICE: The flywheel locking tool engages the flywheel or flexplate ring gear teeth to help prevent crankshaft rotation. It provides a secure holding point when removing or tightening the harmonic balancer bolt, or...
Precision Fit for Porsche Classics：Engineered to replace for OEM #00072192060, fits 924S, 944, 944 Turbo/951, 944S2 (1982-1991), and 968 Automatic Transmission.
Secure Flywheel Locking: Locks flywheel during clutch, timing, or transmission repairs to prevent rotation—critical for safe, accurate engine maintenance.
High-Strength Construction : premium steel material ensures durability for professional shop use or DIY classic car restoration.
What's In Package: Includes 1 flywheel lock tool—ready to use for immediate engine repair tasks.
Benefits -- Locks flywheel in place when removing harmonic balancer on 6.6L Duramax engines with Allison automatic transmissions. Saving time than removing the starter for water pump replacement.
Duramax 2500 / 3500 Pickups – Use toothed pieces only removes metal spring-loaded inspection plate on the bottom of the transmission. Tool should slide into opening toward engine with the top of the tool engaging the teeth of the flywheel.
Duramax 4500 / 5500 Trucks -- Use toothed pieces with screws remove the rubber inspection cap on the bottom of the transmission. Insert the tool at the front of the opening to engage the flywheel and hand tighten bolt to hold tool in place.
36mm Socket -- Use 36mm 12 point socket with 3/4" square drive to remove harmonic balancer bolt and re-torque on installation. 36mm 12 point socket can also be used on axle.
Universal Fit: This LS flywheel locking tool is compatible with Chevy/GM, LS1, LS2, LS3, LS6,clears all rear-wheel drive bellhousings-manual and automatic (Do not work for Front-wheel drive engines); compatible with GM 97 -2019 rear-wheel drive V8 LS and...
Easy Installation: This flywheel holding tool just need to be bolted in place of your stater and and tighten them
Essential Tool: This flywheel holder tool locks the flywheel to the engine, prevents the flywheel from moving; an essential tool for removing and installing Chevrolet engine harmonic balancer
Kit Includes: This flywheel holding locking tool comes with 1 x Engine Flywheel Locking Tool; 2 x proper bolts (FD 8.8); 1 x pair of gloves
Compatible with:GZZTORES Flywheel Locking Tool for Chevy/GM, LS1, LS2, LS3, LS6,clears all rear-wheel drive bellhousings-manual and automatic (NOTE:Do not work for Front-wheel drive engines)
Compatibility:Compatible with GM 97 -2019 rear-wheel drive V8 LS and LT baised engines,Cars and trucks.4.8, 5.3, 5.7, 6.0, 6.2, 7.0 liter( Will not fit Gen 3 coyote 18 and up engines)
Durable Construction: Made from high-quality 1/4 inch American cold rolled steel with a black anti-oxidation metallic paint to withstand the demands of professional automotive work
Essential Tool:4 teeth for firm grip,perfect match,This is a great tool to help you complete your engine maintenance tasks quickly and efficiently
COMPATIBILITY: LS flywheel locking tool replacement for LS1, LS2, LS3, LS6, LSX engine, for GM V8 LS and LT baised engines, for car and truck 4.8, 5.3, 5.7, 6.0, 6.2, 7.0 L ( Not fit Gen 3 coyote 18 and up engines)
MANUFACTURING PROCESS: Automotive flywheel locking tool is made of 1/4'' cold rolled steel TIG welded for high strength and quality to withstand high torque. It is very sturdy and well made to work as intended
ESSENTIAL TOOL: Flexplate locking holder tool is a must have tool for removing and installing the harmonic balancer on your engine. It locks the flywheel on the engine, prevents the flywheel from moving, and allows you to easily and efficiently torque the...
EASY INSTALLATION: You can install the 4-tooth flywheel locking tool directly in the designated position, the teeth on the tool engage with the teeth on the flywheel exactly, which can easily fix the flywheel and improve your working efficiency
Essential Tool for Engine Repair: This automotive flywheel lock device and engine flywheel holder secures the flywheel during engine timing and repair.
Robust Locking Mechanism: Ensures the flywheel remains stationary during repairs. Provides reliable stability as an engine flywheel locking and holding tool
Streamlines Engine Maintenance: Simplifies flywheel locking and holding, making engine timing adjustments quicker. Improves efficiency for mechanics and DIY enthusiasts
Versatile Engine Repair Tool: Compatible with various vehicle models. Works as a flywheel holding tool and engine flywheel tool for cars, trucks, and SUVs
Last update on 2026-10-17 / Affiliate links / Images from Amazon Product Advertising API
How to Choose the Best Flywheel Locks
Material and Durability
When selecting a flywheel lock, consider the materials used. High-quality steel or hardened alloys offer superior strength and resistance to tampering. Look for locks with a robust construction that can withstand impact and environmental factors. A durable lock ensures long-term security and reliability.
Frequently Asked Questions
What is a flywheel lock?
A flywheel lock is a safety device designed to prevent an engine from accidentally starting. It works by physically blocking the rotation of the flywheel, a critical component of the engine's rotational system.
Are flywheel locks universal?
No, flywheel locks are not universally compatible. They are often designed for specific engine types or flywheel sizes. It's essential to check the lock's specifications against your vehicle's engine to ensure a proper fit.
How do I install a flywheel lock?
Installation typically involves positioning the lock around the flywheel and engaging a locking mechanism. Always refer to the manufacturer's instructions for your specific model, as the process can vary. Ensure the lock is securely fastened before working on the engine.
Can a flywheel lock be bypassed?
While most flywheel locks are designed to be tamper-resistant, determined individuals might attempt to bypass them. However, a high-quality lock made from strong materials significantly increases the difficulty of unauthorized access or engine starting.
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