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Mr. Gasket GM LS Timing Cover Alignment Tool

Fits GM LS Engines. Use without Front Seal in Cover


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The timing cover and rear cover on GM (General Motors) LS series engines don't have any dowel pins to ensure correct alignment to the centerline of the crankshaft & this often leads to annoying leaks at the front damper seal and rear main seal. These special alignment tools center the front or rear cover when it is installed, and allow an easy way to install the seal by lightly tapping on the tool with rubber mallet. Choose from three styles of these alignment tools. Plastic construction with O-rings. Made in the USA.


  • Front Cover Alignment Tool – Use w/o Seal in Front Cover
  • Centers Cover on the Crankshaft to Avoid Seal Leaks
  • Tool Can Also Be Used to Install Seal – LSTC1 or LSRC1 (Lightly Tap on Tool to Push Seal w/ Rubber Mallet)
  • Plastic Construction w/ O-rings
  • Made in the USA


BrandMr. Gasket
Emission Code5
Product TypeLS Timing Cover & Rear Cover Alignment Tools
WarrantyLimited 90 Day
Part NumberLSTC1



This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.

Tech Resources

Note: Apply motor oil to O-Rings on tool - helps to prevent damage to O-rings. LSTC1 tool is slightly more accurate than the LSTC2 tool since the rubber seal in the cover is a little more flexible.

Warranty Information

Limited 90 Day: See Details


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