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Achieve Perfect Seal Installation for Your GM LS Engine
When working on GM LS engines, precision and reliability are key to a successful repair. This rear main cover alignment tool is designed to ensure flawless seal installation, prevent leaks, and maintain optimal engine performance.
Perfect Fitment
This tool is specifically designed to fit GM LS engines, including popular models such as 4.8, 5.3, 5.7, 6.0 LS1, LS2, LS3, LS6, L99, LS4, LS9, LSA, LQ4, LQ9, L76, and L92. Its precise design an exact fit, making it an essential tool for any mechanic or engine builder.
Prevent Leaks with Confidence
Avoid costly engine issues caused by improper seal alignment. This tool ensures the rear main cover and seal are perfectly positioned, eliminating the risk of oil leaks and keeping your engine running smoothly and reliably.
Critical for Proper Seal Function
Correct seal alignment is crucial for extending the life of your engine’s seals. This tool aligns the rear seal concentric to the balancer hub and sealing surface, ensuring proper seal function and durability.
Why Choose This Tool?
Whether you're a professional mechanic or a DIY enthusiast, this alignment tool is designed to simplify seal installation while saving you time and effort. It ensures precision, prevents future issues, and provides the durability you need to tackle any GM LS engine repair confidently.
Invest in the right tool for the job and experience the difference in quality and performance!
mechanic81
2025-08-19 13:52:56
I used this to install a new rear main seal on my 2003 Tahoe with a 5.3L flex fuel engine (L59 RPO code). It centered the seal adapter plate perfectly on the crankshaft. I used it to press the new seal in too. Worked Great! About 20k miles later and still no leaks.
Dave E
2025-08-03 12:11:09
This product is well worth the money compared to the OEM version which cost hundreds more. And it's simpler to use. I've heard people say the seal will center itself and there's no need for the alignment tool but they're wrong. Im speaking from experience. Maybe they got lucky with theirs but its not worth the risk considering the work involved. This tool will center the seal plate perfectly and also install the seal into the plate afterwards. This is a high quality tool made to exacting tolerances considering its simplicity. This tool could easily sell for $100 IMO.
yes
2025-07-01 13:16:59
Works great to center the cover and install the seal
Daniel R
2025-06-30 16:04:16
Worked well. Saved a bunch too compared to better known tool brands.
John brewer
2025-06-09 17:51:50
Works great
Jay
2025-05-22 13:45:06
Good fit and finish, perfect function. No complaints.
Omar Padilla
2025-05-13 12:16:12
Use it on every build!
Riley Ashton Eddie Scholler
2025-04-14 13:24:49
Manufacturers package was open and the tool is already used. I’m sure it’ll work but buying something new and receiving it with a gouge and an oil thumbprint on the side is ridiculous.
Dyllon
2025-02-07 16:35:08
I replaced 3 rear main seals without the tool and wouldn’t you know it. They all leaked UNTIL I used this tool.
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