Engine & Exhaust

Allstar Valve Covers SBC Steel Zinc w/Tubes ALL26145 Steel small block Chevy valve covers are an excellent alternative to more expensive and heavier aluminum valve covers. Sold in pairs, one cover is solid without holes and one cover includes two fully...

Allstar Valve Covers SBC Steel Raw w/Tubes ALL26143 Steel small block Chevy valve covers are an excellent alternative to more expensive and heavier aluminum valve covers. Sold in pairs, one cover is solid without holes and one cover includes two fully...

Allstar Valve Covers SBC Alum w/Tubes ALL26139 Tall polished aluminum valve covers are sold in pairs, with two 1-3/8" baffled breather tubes on one cover. Breathers sold separately. Alternate Description VALVE COVERS SBC ALUM W/TUBES Part...

Allstar Valve Covers SBC Alum Centerbolt w/Tubes ALL26137 Tall polished aluminum valve covers are sold in pairs, with two 1-3/8" baffled breather tubes on one cover. Breathers sold separately. Alternate Description VALVE COVERS SBC ALUM...

Allstar Rear Main Seal Adapter 86-up Pan ALL26126 Billet aluminum adapter allows installation of a two piece style crankshaft seal and early (pre-1986) crankshaft into a 1986 and newer SB Chevy (pre-LS) engine. Adapters include mounting hardware...

Allstar Rear Main Seal Adapter Pre-86 Pan ALL26125 Billet aluminum adapter allows installation of a two piece style crankshaft seal and early (pre-1986) crankshaft into a 1986 and newer SB Chevy (pre-LS) engine. Adapters include mounting hardware...

Allstar Crank Adapter LS to Older GM Converters ALL26121 Crank adapter sleeve allows use of an early TH350/TH400 style transmission with an LS engine. Simply insert adapter sleeve into the crankshaft end to center the torque converter pilot with the...

Allstar 400 Balancing Plate Balance plate ALL26120 Plate is installed between crankshaft flange and the flywheel allowing a popular internally balanced Chevy 350 flywheel to be used with an externally balanced 400 crankshaft. Note: These are not designed...

Allstar Performance GM LS Oil Galley Plugs Billet Aluminum ALL90068 Galley plug commonly referred to as a “Barbell" are used by the factory to divert oil to the factory oil filter and prevent unfiltered oil from circulating through the engine. The...

Allstar Performance GM LS Oil Galley Plugs OE Style Nylon ALL90067 Galley plug commonly referred to as a “Barbell" are used by the factory to divert oil to the factory oil filter and prevent unfiltered oil from circulating through the engine. The...

Allstar Performance Remote Oil Filter Mount Kit ALL92027 Kit includes a machined billet aluminum mount for relocating an oil filter to a location that is easier to access and protected from possible damage. Mount features top mounted -12 ORB ports for...

Allstar Performance GM LS Coolant By-Pass/Crossover Plugs ALL31170 Plugs provide a location to bleed air from cooling system of most GM LS engines. Replace factory original plugs or use in place of factory crossover steam tubes. Kit includes two plugs...