ARP Head Studs

ARP Head Studs image 1
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by ARP
Category: Hardware
Product Review: 0 Star Rating

It 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, there’s not a better stud setup on the market today. For openers, ARP uses a premium grade 8740 alloy that is rated far superior to "aircraft" quality. Then, each stud is placed vertically in special racks and precisely heat-treated to 200,000 psi. This procedure ensures complete heat penetration and the results are far superior to those lesser quality studs from other manufacturers who just dump pieces in a basket and hope for the best.

Following heat-treat, each stud is centerless ground to make it as close to perfectly concentric as possible. This procedure involves about ten very slight cuts and results in an exceptionally straight part. It’s important to note that lesser quality studs are not even centerless ground - the material is thread rolled in bar stock form (mostly before heat-treat, when the material is easier to machine). Because ARP studs are manufactured to such exacting tolerances, you will note that gaskets and cylinder heads literally glide into position and are perfectly aligned - something that won’t happen with inferior quality head studs.

ARP studs are thread rolled after heat-treat, which gives them about 1000% (that’s ten times) better fatigue strength than those studs that are threaded prior to heat-treat (a very common industry practice). It costs a lot more to do it this way, because it’s tough on tooling, but the results are well worth the extra effort. You will also note that ARP offers specially undercut studs for several engines. This procedure (done only to the shorter studs) more equalizes the "stretch" of both studs, which makes for a more consistent clamping force - and one that compensates for head gasket compression when the cylinder heads are installed. This helps prevent blown head gaskets, and assures optimum engine sealing!

Premium quality heat-treated 8740 chrome moly steel head stud kits are available for most every domestic and import applications. You won’t find a better quality stud on the market from any other source. Look for ARP stamped on each stud as your assurance of quality. Clearly, they are the best on the market today, and the favorite of leading professional engine builders in all forms of racing.

For more information on this product you may visit the ARP website.


Part Number



Acura Integra
1990-1993 Acura Integra LS

Honda/Acura B18A1/B18B1 12pt head stud kit

1994-2001 Acura Integra GSR

Honda/Acura B18C1/5 VTEC 12pt head stud kit

1994-2001 Acura Integra LS

Honda/Acura B18A1/B18B1 12pt head stud kit

1997-2001 Acura Integra Type R

Honda/Acura B18C1/5 VTEC 12pt head stud kit

Acura RSX
2002-2006 Acura RSX

Honda/Acura K20A (A2 & A3) head stud kit

Honda All
1989-2010 Honda

Honda B20B, with B16A head, head stud kit

Honda Civic
1992-1995 Honda Civic

Honda D16A & D16Z M10 head stud kit

1996-2000 Honda Civic

Honda D16Y head stud kit

1999-2000 Honda Civic Si

Honda B16A head stud kit

2002-2005 Honda Civic Si

Honda/Acura K20A (A2 & A3) head stud kit

Honda Prelude
1992-1996 Honda Prelude

Honda H23A, head stud kit

1997-2001 Honda Prelude

Honda H22 A4 VTEC head stud kit

Honda S2000
2000-2003 Honda S2000

Honda F20 S2000 head stud kit

Mitsubishi Lancer
2003-2006 Mitsubishi Lancer Evo

Mitsubishi 4G63 '94 UP M11 head stud kit

2008-2009 Mitsubishi Lancer Evo

Evo X Mitsubishi 2.0L (4B11) Turbo Head Stud Kit

Nissan 350Z
2003-2006 Nissan 350Z

Nissan VQ35 12pt head stud kit

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