Gaskets & Seals

LSXceleration GM LS MLS Exhaust Header Gasket 14-17944 (Like GM 12617944) Fits all LS engines Except LS7.

LSXceleration GM LS Valve Cover Gaskets 14-37683G-2 All Gen 3 & Gen 4 LS Engines with center bolt valve covers.

LSXceleration Gen V LT4 MLS 7-Layer Head Gasket 14-54622 (Like GM 12654622) 4.0944" (104mm) bore x .053" (1.35mm) thickness x 7-layer MLS This is an OEM LT4 head gasket. Works great for LT1 and L86 engines as well. Made in Germany    

LSXceleration GM LS3 MLS 5-Layer Head Gasket 14-10046 4.094" (104mm) bore x .052" (1.33mm) thickness x 5-layer MLS. Same as Chevrolet Performance 12610046. Made in MX    

Chevrolet Performance RTV Engine Sealant 2.65 oz 88864346 Room temperature vulcanizing (RTV) sealant. This high viscosity product cures when exposed to air. The cured material has superior adhesion and elongation properties and is very resistant to...

Chevrolet Performance RTV Engine Sealant 5.3 oz 12378521 Room temperature vulcanizing (RTV) sealant. This high viscosity product cures when exposed to air. The cured material has superior adhesion and elongation properties and is very resistant to...

LSXceleration LS Truck Intake Manifold Gaskets 14-60413 (Cathedral Port) For GM LS Truck 4.8L 5.3L 6.0L with Cathedral Port.

LSXceleration MLS Head Gasket Set 14-98544 - 5.3L, 5.7L (Like GM 12498544) 3.937" Bore x 0.052" Compressed Thickness Multi-layer steel (MLS) cylinder head gaskets. Made in MX    

Cometic Gen V L83 3.875 Bore MLx Head Gasket C15426-052 Gen V L83 3.875" Bore. 0.052" Compressed Thickness MLx Gaskets utilize an integrated "stopper" layer for combustion chamber sealing and improved clamp load around the cylinder without increasing...

LSXceleration GM Gen V LT1/L86 6.2L MLS 5-Layer Head Gasket 14-88943 (Like GM 12688943) 4.0944" (104mm) bore x .0523" (1.33mm) thickness x 5-layer MLS.  Made in MX    

Chevrolet Performance Gen V LT Timing Cover Damper Seal 12634614 Fits Gm L83, L86, LT1, LT4

Chevrolet Performance LS7/LS9 Oil Line To Pan Seal 15217990 Engine Oil Cooler Line Seal