BTR LS9 Small Bore 3.940" MLS 7 Layer Cylinder Head Gaskets Pair Set 4.8L 5.3L These small bore, seven layer MLS head gaskets from BTR utilize the same sealing technology found in the ever popular LS9 gasket. This is the perfect choice If you have a 4.8...

BTR LS9 MLS 7 Layer Cylinder Head Gaskets Pair Set Like GM #12622033 6.0 6.2 LS3 If you're putting together a budget power adder build, the BTR LS9 head gasket can't be beat for performance and value. These head gaskets have been proven to be reliable...

LS Series Cylinder Head Pins, Set of 4, GM

Hawks Viton Valve Seals for GM Stock & Non-Ribbed Aftermarket Valve Guides. Sold as a set of 16, the number needed for spring kits. Note: These can also be used as replacement valve stem for Texas Speed valve spring kits.

Cylinder Freeze Plugs, Set of 2

PRC 15 Degree As-Cast  220cc Cathedral Port Cylinder Heads, 59cc (LS1/LS2/LS6)   Precision Race Components all new cylinder head castings completed with 220cc runners. For stock cubic inch 4.8/5.3/LS1/LS2 applications requiring...

Heads, AFR LS1 225cc 65cc Chamber Cylinder Heads, Pair     For the maximum street/strip LS1/LS6 aluminum cylinder head AFR’s all new 225cc emission legal head E/O #D250-4 are hands down the best choice. Specifically designed...

Heads, AFR 245cc LS1 Cylinder Heads CNC Ported with 74cc chamber, BARE, Pair   A tremendous amount of time and energy was invested to designing the 245cc LS1/LS2/LS6 Gen III head which represents the pinnacle in cathedral design bolt on...

Heads, AFR 245cc LS1 Cylinder Heads CNC Ported w/ 74cc chamber assembled w/ 2.160" / 1.60" Valves, dual coil valve springs(.650" max lift), & titanium retainers, PAIR   A tremendous amount of time and energy was invested to designing the...

A tremendous amount of time and energy was invested to designing the 245cc LS1/LS2/LS6 Gen III head which represents the pinnacle in cathedral design bolt on performance. With over 355 CFM's available it has intake flow numbers approaching GM's...

Heads, AFR 245cc LS1 Cylinder Heads CNC Ported w/ 64cc chamber assembled w/ 2.160" / 1.60" Valves, dual coil valve springs(.650" max lift), & titanium retainers, PAIR   A tremendous amount of time and energy was invested to designing the...

In keeping up with the GM’s trend of larger bore sizes and increased displacement, AFR is proud to release the 215 version of the popular Gen III product line which is aimed specifically to maximize 4” bore combinations (364 – 408...