CYLINDER HEAD GAsKETs, HEAD BOLTs AND sTUDs Chevrolet Performance cylinder head gaskets, cylinder head bolts and cylinder head studs are made with high-quality materials. Their superior construction helps ensure optimum sealing between cylinder heads and the engine block. Gasket packages contain one gasket unless otherwise specified. Head gaskets are available in a variety of materials and thicknesses. Use the proper gasket to maintain compression ratios and minimum piston-to-cylinder-head clearances. Part Number Description Technical Notes 10105117 Composition Head Gasket Composition head gasket with stainless steel fire ring; For stock or mildly modified engines with 4.0" cylinder bores; Fits cast-iron or aluminum heads; Used on Ram Jet 350; .028" compressed thickness 3830711 Steel Shim Head Gasket For stock and mildly modified engines with 4.0" cylinder bores; .026" compressed thickness 12732510 Steel Shim Head Gasket Stainless steel fire rings; Fits aluminum or cast-iron heads; Used on ZZ6 and 350 HO engines; .051" compressed thickness 10185054 Heavy-Duty Composition Head Gasket Teflon-coated; Pre-flattened wire O-rings around each cylinder; For competition engines with cylinder bores of 4.0" to 4.125"; .041" compressed thickness NOTE: Drill steam holes when used on 400-ci Small-Blocks. Gasket does not require re-torquing. 12499223 Cylinder Head Installation Kit – 5.7L L31 Engine Comprehensive kit; Includes 2 cylinder head gaskets, 2 valve cover gaskets, 2 intake manifold gasket sets and 2 exhaust manifold gaskets; .028" compressed thickness 14011040 Hardened Washer .450" I.D. x .778" O.D. ; Sold individually 10051155 Hardened Washer .450" I.D. x .750" O.D.; Sold individually, for Phase 6 and raised-runner aluminum heads 585927 Cylinder Head Dowel Pin Dowel pin 5/16" diameter by 9/16" long; For all Small-Block V-8 and 90° V-6 engines 12495499 Cylinder Head Bolt Kit For iron or aluminum heads, Includes 14 of P/N 10168525; 4 of P/N 10168526, 16 of P/N 10168527, and thread sealant small-Block Cylinder Heads Additional Required Components Part Number Head Gaskets (Quantity) Bolts (Quantity) Spark Plug Engine Application 12691728 10105117 (2) OR 12557236 (2) 10168525 (14), 10168526 (4), 10168527 (16) 19354420 19435602, 19433031, 19433036, 19433030, 19433038 19417592 10105117 (2) OR 12557236 (2) 10168525 (14), 10168526 (4), 10168527 (16) 19355201 19435604 19331472 10105117 (2), 10185054 (2) 10168525 (14), 10168526 (4), 10168527 (16) N/A OVERHAUL GAsKET KITs 19201171 Rebuild Gasket Kit - Fits 350 HO, HT383 and CT350 Circle Track engine - Includes head gaskets, oil pan gasket set, rear main seal housing gasket, intake manifold gasket set, water outlet gasket, front cover gasket, fuel pump adapter gasket , water pump gaskets, distributor gasket, valve cover gaskets, crankshaft rear main seal 19201172 Rebuild Gasket Kit - Fits SP350/385, ZZ6, SP383 and CT400 Circle Track engine - Includes head gaskets, oil pan gasket set, rear main seal housing gasket, intake manifold gasket set, water outlet gasket, fuel pump adapter gasket, water pump gaskets, distributor gasket, valve cover gaskets, crankshaft rear main seal 149 sMALL-BLOCK COMPONENTs Cylinder Head Installation Kit Heavy-Duty Composition Head Gasket Composition Head Gasket Parts intended for competition use only. See page 2 for details. Additional components required for installation. See chart above.