Cylinder Head Bolt Kit for Jeep 3.8L & 4.2L (232 & 258 cid) inline 6 with 4.0L head - 7/16˝ (two len

Cylinder Head Bolt Kit for Jeep 3.8L & 4.2L (232 & 258 cid) inline 6 with 4.0L head - 7/16˝ (two lenHigh Performance head bolts are available with a reduced wrenching hex or 12 point and wide area flanged head that eliminates theneed for valve train removal to facilitate cylinder head retorquing. All High Performance Series bolts are 180,000 psi (which is 15%stronger than Grade 8) and kits come complete with hardened parallel ground washers. Material: 8740 Chrome Moly Finish: Black Material 2: Finish 2: Origin: USA

ARP manufactures a variety of special application-specific bolt and stud kits

rated at 190

Studs and bolts come either black oxide chrome moly or polished ARP Stainless

Many professional engine builders prefer to use studs because of their ability to properly position the gasket and guide the cover into position

This procedure ensures complete heat penetration and the resultsare far superior to those lesser quality studs from other manufacturerswho just dump pieces in a basket and hope for the best

marine and drag racing engines – including those with superchargers and/or nitrous oxide injection systems – ARP offers replacement rod bolts in three different models

Made from premium grade 8740 andheat-treated to 190

000 psi for the ARP2000® material

Both are nominally rated at 180

000 lbs clamping force

Stud kits come complete with nuts and washers

enabling the rotationof an engine with any 1/2