Gaskets & Seals

Chevrolet Performance Gen V L83 L86 LT1 LT4 Crankshaft Rear Oil Seal Housing Gasket 12627520 Rear cover oil seal

Chevrolet Performance GM Gen V LT1/L86 6.2L MLS 5-Layer Head Gasket 12688943 4.0944" (104mm) bore x .0523" (1.33mm) thickness x 5-layer MLS.     

Chevrolet Performance Gen V L83 L86 LT1 Intake Manifold Gaskets 12626354 Replacement intake port seal for Gen V L83, L86, LT1 engines. Sold individually, this is a replacement seal for a one port opening.

LSXceleration GM LS MLS Exhaust Header Gasket Set 14-17944-2 (Like GM 12617944) Fits all LS engines Except LS7. Sold as a pair.

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