ARP Head Stud Kit - GM 2.2L ECOTEC - 231-4701 Nissan 240Z The factory plastic harness cover

The factory plastic harness cover on the coil plug area needs to be removed for proper fitment

No need to remove or hijack inputs from OEM sensors

Eliminate Pre-Load During Installation

Ford Air Filter Dry Media F-150 EcoBoost Raptor / Limited / 3

ARP Head Stud Kit - GM 2.2L ECOTEC - 231-4701 Nissan 240Z The factory plastic harness coverIt is for good reason that virtually every top professional engine builder relies on ARP Pro Series head studs for their all out competition powerplants. Simply stated, theres not a better stud setup on the market today. For openers, ARP only uses premium grade 8740 alloy and a proprietary ARP2000 alloy that are rated far superior to aircraft quality alloy steels. Secondly, each stud is placed vertically into special racks and precisely heat treated