ARP Headstuds suit Subaru WRX and STI..

ARP SKU: 260-4701
ARP Headstuds suit Subaru WRX and STI.. - Sydney Performance Parts & Tyres - Prestons Sydney Australia

ARP Headstuds suit Subaru WRX and STI..

ARP SKU: 260-4701
Regular price $489.95
/

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.

Vehicle Fitment is provided as a guide only to narrow down results. Please check listing for any additional information (measurements, specifications, additional notes) which may affect compatibility or ask for assistance.
  • 1994 Subaru STI GC8
  • 1994 Subaru WRX GC8/GF8
  • 1995 Subaru STI GC8
  • 1995 Subaru WRX GC8/GF8
  • 1996 Subaru STI GC8
  • 1996 Subaru WRX GC8/GF8
  • 1997 Subaru STI GC8
  • 1997 Subaru WRX GC8/GF8
  • 1998 Subaru STI GC8
  • 1998 Subaru WRX GC8/GF8
  • 1999 Subaru STI GC8
  • 1999 Subaru WRX GC8/GF8
  • 2000 Subaru STI GC8
  • 2000 Subaru WRX GC8/GF8
  • 2001 Subaru STI GDB
  • 2001 Subaru WRX GDA/GGA
  • 2002 Subaru STI GDB
  • 2002 Subaru WRX GDA/GGA
  • 2003 Subaru STI GDB
  • 2003 Subaru WRX GDA/GGA
  • 2004 Subaru STI GDB
  • 2004 Subaru WRX GDA/GGA
  • 2005 Subaru STI GDB
  • 2005 Subaru WRX GDA/GGA
  • 2006 Subaru STI GDB
  • 2006 Subaru WRX GDA/GGA
  • 2007 Subaru STI GDB
  • 2007 Subaru WRX GDA/GGA
  • 2008 Subaru STI GRF
  • 2008 Subaru WRX GEE/GHE
  • 2009 Subaru STI GRF
  • 2009 Subaru WRX GEE/GHE
  • 2010 Subaru STI GRF
  • 2010 Subaru WRX GEE/GHE
  • 2011 Subaru STI GVF/GRF
  • 2011 Subaru WRX GVE/GRE
  • 2012 Subaru STI GVF/GRF
  • 2012 Subaru WRX GVE/GRE
  • 2013 Subaru STI GVF/GRF
  • 2013 Subaru WRX GVE/GRE
  • 2014 Subaru STI GVF/GRF
  • 2014 Subaru WRX GVE/GRE
  • 2015 Subaru STI VAB

 

  • We offer Local Delivery and Pickup
  • Secure payments
  • In stock, ready to ship
  • Inventory on the way
Tax included. Shipping calculated at checkout.

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.

Vehicle Fitment is provided as a guide only to narrow down results. Please check listing for any additional information (measurements, specifications, additional notes) which may affect compatibility or ask for assistance.
  • 1994 Subaru STI GC8
  • 1994 Subaru WRX GC8/GF8
  • 1995 Subaru STI GC8
  • 1995 Subaru WRX GC8/GF8
  • 1996 Subaru STI GC8
  • 1996 Subaru WRX GC8/GF8
  • 1997 Subaru STI GC8
  • 1997 Subaru WRX GC8/GF8
  • 1998 Subaru STI GC8
  • 1998 Subaru WRX GC8/GF8
  • 1999 Subaru STI GC8
  • 1999 Subaru WRX GC8/GF8
  • 2000 Subaru STI GC8
  • 2000 Subaru WRX GC8/GF8
  • 2001 Subaru STI GDB
  • 2001 Subaru WRX GDA/GGA
  • 2002 Subaru STI GDB
  • 2002 Subaru WRX GDA/GGA
  • 2003 Subaru STI GDB
  • 2003 Subaru WRX GDA/GGA
  • 2004 Subaru STI GDB
  • 2004 Subaru WRX GDA/GGA
  • 2005 Subaru STI GDB
  • 2005 Subaru WRX GDA/GGA
  • 2006 Subaru STI GDB
  • 2006 Subaru WRX GDA/GGA
  • 2007 Subaru STI GDB
  • 2007 Subaru WRX GDA/GGA
  • 2008 Subaru STI GRF
  • 2008 Subaru WRX GEE/GHE
  • 2009 Subaru STI GRF
  • 2009 Subaru WRX GEE/GHE
  • 2010 Subaru STI GRF
  • 2010 Subaru WRX GEE/GHE
  • 2011 Subaru STI GVF/GRF
  • 2011 Subaru WRX GVE/GRE
  • 2012 Subaru STI GVF/GRF
  • 2012 Subaru WRX GVE/GRE
  • 2013 Subaru STI GVF/GRF
  • 2013 Subaru WRX GVE/GRE
  • 2014 Subaru STI GVF/GRF
  • 2014 Subaru WRX GVE/GRE
  • 2015 Subaru STI VAB

 

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