Woosphy LS Harmonic Balancer Puller for GM LS Engines (25264) — OE-fit, Heat‑Treated Steel

Woosphy 25264 is a purpose-built harmonic balancer puller that safely extracts crank pulleys from GM LS-series engines (5.3L through 7.0L) without damaging the crank snout or balancer.

If you service LS-family small-block engines — from common 5.3L truck motors to high-displacement 7.0L units — removing the harmonic balancer or crank pulley is a frequent step for front-end repairs and timing work. The Woosphy 25264 tool is manufactured to match OE puller geometry so you can remove the balancer cleanly and quickly using standard hand tools. It’s sold as a single, ready-to-use puller and intended as a direct replacement for the original equipment part number 25264.

How does this puller remove the harmonic balancer without harming parts?

The tool centers on the crank snout and applies even, axial force to pull the balancer straight off the keyway. That prevents bending or twisting stress on the crank and preserves the balancer’s tapered fit. It’s designed to mate with the factory bolt pattern and to work with common ratchets or breaker bars.

• Matches OE bolt locations for accurate alignment
• Applies steady axial pull to avoid side-loads
• Works with standard hand tools—no hydraulic press required
• Reduces risk of crank snout nicks or balancer damage

Which GM engines and models are compatible with Woosphy 25264?

This puller is intended for LS-series Chevrolet and GM small-block V8 engines that share the same harmonic balancer interface. It covers a wide range of OE engines from factory 5.3L truck motors up to 7.0L performance engines. Verify fit by comparing your OEM part number or crank bolt/puller hole pattern before purchase.

• Compatible with 5.3L, 5.7L (LS1), 6.0L (LS2), 6.2L (LS3), and 7.0L engines
• Direct replacement for OE part number 25264
• Fits common LS crank pulley bolt patterns
• Best for GM vehicles and crate LS engines using the same balancer design

What is the construction and durability of the tool?

Woosphy builds this puller from heat-treated steel to withstand repeated use in a home garage or professional shop. Threads and contact surfaces are machined to maintain alignment and resist galling under heavy loads. Regular cleaning and light lubrication of threads will prolong service life.

• Heat-treated alloy steel for strength
• Precision-machined threads for smooth operation
• Corrosion-resistant finish for longevity
• Supplied as a single-piece tool ready for immediate use

How do I use the Woosphy 25264 puller safely and effectively?

First, remove any accessories blocking access to the balancer and verify the puller lines up with the crank’s center. Thread the tool to the crank bolt or use the supplied center bolt, then tighten gradually while keeping the puller seated. Use steady, controlled force—avoid sudden impacts—to extract the pulley straight from the crank boss.

• Clear work area and support the engine if needed
• Align puller bolts with balancer holes and hand-start threads
• Tighten center bolt with a ratchet or breaker bar until the balancer releases
• Inspect crank snout and balancer after removal for wear

Who is this for: The Woosphy 25264 harmonic balancer puller is made for DIY mechanics, performance builders, and professional technicians working on GM LS-series engines. It’s a practical replacement for the OE 25264 puller and a useful addition to any toolbox when performing front-end engine service, timing component replacement, or pulley swaps on 5.3L through 7.0L engines.