--- product_id: 319001963 title: "LS Harmonic Balancer Installation Tool Crank Pulley Install Tool 551141 Compatible with GM 1997-UP V8 LS1 LS2 LS3 LS4 LSX LSA LS6 LQ4 LQ9 with Thrust Bearing & Wrench Flats" brand: "seeboo" price: "£16.86" currency: GBP in_stock: true reviews_count: 10 category: "Seeboo" url: https://www.desertcart.co.uk/products/319001963-ls-harmonic-balancer-installation-tool-crank-pulley-install-tool-551141 store_origin: GB region: United Kingdom --- # Black Rust-Proof Finish 12.9 Grade Steel Strength Fits GM LS & LT 1997+ Engines LS Harmonic Balancer Installation Tool Crank Pulley Install Tool 551141 Compatible with GM 1997-UP V8 LS1 LS2 LS3 LS4 LSX LSA LS6 LQ4 LQ9 with Thrust Bearing & Wrench Flats **Brand:** seeboo **Price:** £16.86 **Availability:** ✅ In Stock ## Summary > 🛠️ Engineered for pros who demand precision and power. ## Quick Answers - **What is this?** LS Harmonic Balancer Installation Tool Crank Pulley Install Tool 551141 Compatible with GM 1997-UP V8 LS1 LS2 LS3 LS4 LSX LSA LS6 LQ4 LQ9 with Thrust Bearing & Wrench Flats by seeboo - **How much does it cost?** £16.86 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/319001963-ls-harmonic-balancer-installation-tool-crank-pulley-install-tool-551141) ## Best For - seeboo enthusiasts ## Why This Product - Trusted seeboo brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Complete Pro Kit:** Includes stud, washers, thrust bearing, and flange nut—everything you need for a flawless install. - • **Unmatched Durability:** Crafted from premium 35CrMo alloy steel with 12.9 strength grade for long-lasting, heavy-duty use. - • **Rust-Resistant Finish:** Black anti-rust coating guarantees tool longevity and maintains professional aesthetics. - • **Effortless Installation:** Threaded rod and thrust bearing design ensure smooth, slip-free harmonic balancer installation and removal. - • **Precision Compatibility:** Seamlessly fits all GM LS & LT series engines from 1997 onward, including Camaro, Corvette, and more. ## Overview The LS Harmonic Balancer Installation Tool is a high-strength, rust-proof professional-grade tool designed for easy and precise installation of harmonic balancers on all GM LS and LT series engines from 1997 to present. Made from durable 35CrMo steel with a 12.9 strength rating, it includes a thrust bearing and wrench flats for slip-free operation, making it an essential upgrade for engine maintenance and performance enthusiasts. ## Description The package includes: 1 X threaded rod, 1 X thrust bearing, 1 X heightening nut, 2 X washer Material: It is made of high-quality alloy structural steel material 35CrMo, with a strength of 12.9 grade, excellent solidity and durability, and the surface has undergone strict anti-rust treatment. When installing the harmonic balancer, the tool will not break in the crank. Equipped with: harmonic balancer installation tool. Compatible with all GM LS and LT series engines from 1997 to the present (3rd, 4th and 5th generation). You can also search for your matching models through desertcart to purchase. Compatibility: This LS Harmonic balancer is perfect for your Camaro, Corvette, Trans Am, GTO, G8, LS Truck, or LS powered street rod. Simple installation: This tool is long enough, you only need to screw it into the crankshaft and use the nut to push the crankshaft pulley into place. This is necessary to replace the engine or upgrade the balancer (it will be more perfect when used with lubricating oil). Note: The installation tool is not compatible with Gen 2 LT1 5.7 engine (1992-1997). If you have any questions you can contact us in time, we will reply you as soon as possible. Review: Awesome price and works like a charm. - $65 -$100 dollars to maybe rent a kit from auto part store.. only to get home and realize it doesn't work for your car!!!! Happened 3 times before I found this tool. 2007 gm sierra classic v vin 4.8L. Super simple use. 1 minute after opening box the harmonic balancer was re installed with no fuss. Great price, great quality, perfect fit, and I didn't have to argue with the high schoolers at parts house. Review: Works great, but needs high pressure grease! - Works great with some high pressure grease, but didn't come with any instructions. Easy enough to figure out. It is one time use on the thrust bearing, maybe that should earn it a 4 star but it's cheap enough to replace the thrust bearing only when needed. Possibly operator error because I used a cheater bar and put some weight on it to make sure the pully was completely set. 5 stars either way and makes install super easy and tool removal is even easier! Threads fit 2011 silverado 2500HD 6.0 perfectly ## Features - 【HIGH PERFORMANCE】—The Crank Strength Of The Harmonic Balancer Installation Tool Is 12.9, And It Is Made Of High-Quality 35CrMo Heavy Steel. The Quenching Process Is Modulated To Ensure That It Does Not Affect Long-Term Use. The Surface Is Black And Rust-Proof. There is No Need To Worry About The Wrench Slipping Off During The Installation Process With Customized Flange Nuts! - 【COMPATIBLE WITH CHEVROLET GM LS & LT SERIES 】—Harmonic Balancer Installation Tool Suitable For Camaro, Corvette, Trans Am, GTO, G8, LS Truck Or LS Power Road Signs. Compatible With All GM LS And LT Series Engines From 1997 To The Present (Third, Fourth And Fifth Generations). You Can Also Search For Matching Models Through desertcart To Purchase! - 【 INSTALLATION AND REMOVAL 】— Can Be Screwed Completely Into The Crank, Just Slowly Twist The Nut Until The Pulley Is In Place. The Upgraded Wrench Plane Is Convenient For Disassembly Without Worry，This Is Required For Engine Replacement Or Balancer Upgrades. A Little Lubricating Oil Will Make It Smoother When Using! - 【 PACKAGE INCLUDES ​】— 1*Stud, 2*Washer, 1*Thrust Bearing, 1*Flange Nut - 【AFTER-SALES SERVICE 】 If You Are Not Satisfied With The Harmonic Balancer Crank Pulley Installation Tool, Please Contact Us, We Will Help You Solve It As Soon As Possible! ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08ZYRCNFY | | Best Sellers Rank | #6,342 in Automotive ( See Top 100 in Automotive ) #3 in Engine Pulley Tools | | Brand | SEEBOO | | Customer Reviews | 4.6 4.6 out of 5 stars (703) | | Date First Available | March 24, 2021 | | Item Weight | 15.2 ounces | | Manufacturer | SEEBOO | | Manufacturer Part Number | SO-003 | | Package Dimensions | 8.31 x 2.17 x 1.65 inches | ## Images ![LS Harmonic Balancer Installation Tool Crank Pulley Install Tool 551141 Compatible with GM 1997-UP V8 LS1 LS2 LS3 LS4 LSX LSA LS6 LQ4 LQ9 with Thrust Bearing & Wrench Flats - Image 1](https://m.media-amazon.com/images/I/61MQAzFeY7L.jpg) ![LS Harmonic Balancer Installation Tool Crank Pulley Install Tool 551141 Compatible with GM 1997-UP V8 LS1 LS2 LS3 LS4 LSX LSA LS6 LQ4 LQ9 with Thrust Bearing & Wrench Flats - Image 2](https://m.media-amazon.com/images/I/71nEMIa-a+L.jpg) ![LS Harmonic Balancer Installation Tool Crank Pulley Install Tool 551141 Compatible with GM 1997-UP V8 LS1 LS2 LS3 LS4 LSX LSA LS6 LQ4 LQ9 with Thrust Bearing & Wrench Flats - Image 3](https://m.media-amazon.com/images/I/71w7V79fQOL.jpg) ![LS Harmonic Balancer Installation Tool Crank Pulley Install Tool 551141 Compatible with GM 1997-UP V8 LS1 LS2 LS3 LS4 LSX LSA LS6 LQ4 LQ9 with Thrust Bearing & Wrench Flats - Image 4](https://m.media-amazon.com/images/I/71X5oTiLxNL.jpg) ![LS Harmonic Balancer Installation Tool Crank Pulley Install Tool 551141 Compatible with GM 1997-UP V8 LS1 LS2 LS3 LS4 LSX LSA LS6 LQ4 LQ9 with Thrust Bearing & Wrench Flats - Image 5](https://m.media-amazon.com/images/I/71BMRUyvyEL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Awesome price and works like a charm. *by J***. on January 25, 2026* $65 -$100 dollars to maybe rent a kit from auto part store.. only to get home and realize it doesn't work for your car!!!! Happened 3 times before I found this tool. 2007 gm sierra classic v vin 4.8L. Super simple use. 1 minute after opening box the harmonic balancer was re installed with no fuss. Great price, great quality, perfect fit, and I didn't have to argue with the high schoolers at parts house. ### ⭐⭐⭐⭐⭐ Works great, but needs high pressure grease! *by T***N on September 9, 2025* Works great with some high pressure grease, but didn't come with any instructions. Easy enough to figure out. It is one time use on the thrust bearing, maybe that should earn it a 4 star but it's cheap enough to replace the thrust bearing only when needed. Possibly operator error because I used a cheater bar and put some weight on it to make sure the pully was completely set. 5 stars either way and makes install super easy and tool removal is even easier! Threads fit 2011 silverado 2500HD 6.0 perfectly ### ⭐⭐⭐⭐⭐ Worked great *by T***R on February 14, 2026* Worked great i lube the seal for the timing cover , and the balancer went right on with this tool ## Frequently Bought Together - SEEBOO LS Harmonic Balancer Installation Tool Crank Pulley Install Tool 551141 Compatible with GM 1997-UP V8 LS1 LS2 LS3 LS4 LSX LSA LS6 LQ4 LQ9 with Thrust Bearing & Wrench Flats - Chelhead LS Flywheel Locking Tool Steel Black Oxide Flexplate Locking Holder Tool Compatible with Engine Chevy LS 1 2 3 LSX - For GM LS Harmonic Balancer Puller 25264 Crank Pulley Puller Automotive Replacement Engine Quickly Removes Harmonic Balancers without Tapped Holes and No Radiator Removal --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/319001963-ls-harmonic-balancer-installation-tool-crank-pulley-install-tool-551141](https://www.desertcart.co.uk/products/319001963-ls-harmonic-balancer-installation-tool-crank-pulley-install-tool-551141) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-05-17*