Engine & Exhaust

Allstar 18mm O2 Sensor Plug ALL34150 Hard-to-find O2 sensor fittings work in a variety of uses. Alternate Description 18MM O2 SENSOR PLUG Part Number ALL34150 Vendor Part Number ALL34150 UPC Code 848238019230 Package Weight...

Allstar Check Valve Only for Crankcase Evac Kit ALL34146 Alternate Description CHECK VALVE ONLY FOR CRANKCASE EVAC KIT Part Number ALL34146 Vendor Part Number ALL34146 UPC Code 848238072693 Package Weight 0.45 lbs 0...

Allstar Crankcase Evacuation System ALL34145 Reduce crankcase pressure for optimum piston ring seal, fewer oil leaks and better engine performance. System includes two of each: chrome plated push-in breathers, check valves, weld-in 3.5" long threaded...

Allstar Pulley Shim Kit Crank ALL31066 Use shim kits to properly align pulleys. Water pump shims have dual bolt hole pattern to fit most GM and Ford water pumps. Crank pulley spacers are for small block Chevy's. Kits include three shims. Alternate...

Allstar Pulley Shim Kit Water Pump ALL31064 Use shim kits to properly align pulleys. Water pump shims have dual bolt hole pattern to fit most GM and Ford water pumps. Crank pulley spacers are for small block Chevy's. Kits include three shims. ...

Allstar Pulley Guide (Each) ALL31035 Hard-coated aluminum pulley guide helps retain drive belt. Guide is .085" thick with a 1.00" ID, 1/8" keyway slot, and a 2.500" OD. The same guide is found in ALL31031 Mandrel Kits. Sold each. Alternate...

Allstar Stepped Washer For 31030 Pulley ALL31034 Kit prevents mandrel bolt breakage and is made specifically for use with Allstar ALL31030 crank pulley. Mandrel is attached to the crankshaft pulley with three bolts, while the vibration damper is retained...

Allstar LS Coil Mounting Bracket Black Steel Pair ALL26212 TIG welded valve covers with a thick billet rail available with or without coil mounts. Tall design to clear most aftermarket valvetrain. Fill cap (with O-ring seal), gaskets and bolts included...

Allstar Valve Covers SBC Steel Black w/Tubes ALL26147 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 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 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...