ARP Case Halves Stud Kit Porsche 911 All 1976-2011

Main Studs
There are many important reasons to use ARP main stud kits, including the elimination of main cap walk and fretting, as well as protecting the threads in your engine block. All kits come complete with hardened parallel-ground washers and high quality nuts. Some applications have provisions for mounting windage trays and have specially designed standoff studs with serrated lock nuts to position the windage tray and lock it securely in place. The studs are manufactured from 8740 chrome moly steel, heat-treated in-house to 200,000 psi tensile strength, and precision J-form threads rolled after heat-treat to create a fastener that has threads 1000% stronger than others.

Main Bolts
Far superior to any other main bolt kit offered for use in competition engines, ARP main bolts are designed to meet the exacting standards and demands of professional engine builders. Forged from 8740 chrome moly, all bolts feature generous under-head radius and rolled threads for the utmost reliability. The threads are rolled after heat-treating, which makes them about 1000% longer fatigue life than most main bolts, which are threaded prior to heat-treating. Available in the popular High Performance Series, which, at a nominal rating of 180,000 psi, is a premium replacement for OEM fasteners, or the 200,000 psi nominal rated Pro Series, application-specific main bolts with reduced wrenching head and are designed for use in competition applications. Parallel-ground, hardened washers are included with each kit.

Vehicle Fitments:

Year	Make	Model	Submodel
2004	Porsche	911	40th Anniversary Edition
2014	Porsche	911	50th Anniversary Edition
1981 - 1987	Porsche	911	Base
1984 - 2016	Porsche	911	Carrera
1990 - 1996	Porsche	911	Carrera 2
1989 - 2016	Porsche	911	Carrera 4
2012 - 2016	Porsche	911	Carrera 4 GTS
1996 - 2016	Porsche	911	Carrera 4S
2011 - 2016	Porsche	911	Carrera GTS
1998 - 2016	Porsche	911	Carrera S
2002 - 2011	Porsche	911	GT2
2011	Porsche	911	GT2 RS, GT3 RS 4.0
2001 - 2016	Porsche	911	GT3
2016	Porsche	911	GTS, Carrera 4 Black Edition, Carrera Black Edition, Targa 4 GTS, Black Edition
1992 - 1994	Porsche	911	RS America
1976 - 1977	Porsche	911	S
1978 - 1983	Porsche	911	SC
1989 - 2011	Porsche	911	Speedster
1994 - 2016	Porsche	911	Targa
2007 - 2016	Porsche	911	Targa 4, Targa 4S, GT3 RS
2015 - 2016	Porsche	911	Targa S
1991 - 2016	Porsche	911	Turbo
1993 - 1994	Porsche	911	Turbo 3.6
1976 - 1989	Porsche	911	Turbo Carrera
2005 - 2016	Porsche	911	Turbo S
1978 - 1979	Porsche	930	Turbo