Maximize 4.000 in. and larger bore combinations with AFR 245cc LSX Mongoose Strip cylinder heads. These aluminum cylinder heads feature 100 percent CNC-ported chambers, intake, and exhaust ports, and use A356 aluminum castings. They're also equipped...

AFR 215cc LSX Mongoose Strip cylinder heads are strong, versatile, and a great match for aggressive applications and large stroker engines where your aim is enhancing street/strip performance. These aluminum heads have 100 percent CNC-ported chambers,...

AFR 215cc LSX Mongoose Strip cylinder heads are strong, versatile, and a great match for aggressive applications and large stroker engines where your aim is enhancing street/strip performance. These aluminum heads have 100 percent CNC-ported chambers,...

Precision Race Components all new cylinder head castings completed with 247cc runners. For 408 cubic inch and larger applications with 4.03"+ bore sizing.   MADE IN THE USA!! CAST IN THE USA!! MACHINED IN THE...

Precision Race Components all new cylinder head castings completed with 237cc runners. For 370 cubic inch and larger applications with 4.00"+ bore sizing. Click Here to SEE why we build better heads! MADE IN THE USA!!CAST IN THE USA!!MACHINED IN THE...

Precision Race Components all new cylinder head castings completed with 227cc runners. For stock cubic inch LS1/LS2 applications requiring smaller chambers for extra compression MADE IN THE USA!!CAST IN THE USA!!MACHINED IN THE USA!! Features: 227cc...

2004 & Later LS2/LS3/LS7 Cylinder Head Bolt Kit New GM Kit of 15 bolts for 2004 & later LSX engines 1 kit per cylinder head; order 2 per engine Head bolts are torque to yeild so they cannot be reused on LSX engines

97-2003 LS1/LS6 Cylinder Head Bolt Kit New GM Kit of 15 bolts for 98-02 Camaro/Firebird LS1 & 97-03 Corvette C5 LS1/LS6 1 kit per cylinder head; order 2 per engine Head bolts are torque to yield so they cannot be reused on LS...

Gasket, New GM 7-Layer Steel LS9 Head Gasket Kit, Pair. Will also fit LSA supercharger engines. Bore (in)   4.100 in. Bore (mm)   104.140mm Gasket Material   Composite Compressed Thickness (in)   0.051 in...

Main Stud Kit, ARP 4-Bolt Main Cap Stud Kit LS1/LS6/LS2 These ARP main studs are made from 8740 chromoly steel and have a 190,000 psi tensile-strength rating. They are precision centerless-ground and thread-rolled to Mil-S-8879 specs, with a black oxide...

Gasket, New GM Multi Layer Steel LS1/LS6 5.7L Head Gaskek Kit, Pair

ARP Head Bolts Fits 1997-2003 GM Gen III 4.8L 5.3L 5.7L 6.0L LS Engines These ARP High Performance series head bolt kits are tough! They are rated at 170,000 psi--15 percent stronger than Grade 8 fasteners. They come available with hex heads or reduced...