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. 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. 1997 Acura CL 2.2L SOHC 16 Valve VTEC Engine Code “F22B1″. 1998 Honda Odyssey 2.3L VTEC SOHC 16 Valve L4 Engine Code “F23A7″. 10 Cylinder Head Studs (12mm) 10 Washers 10 12-Point Nuts 1 ARP Ultra-Torque Fastener Assembly Lubricant packet 1 Instruction Sheet. We are not responsible for carrier transit time. All product specifications, terms and prices are subject to change without prior notice. We are committed to protect your privacy; we will not sell, share, or rent your personal and financial information to others. We have more than twenty year’s experiences in automotive industry. All of our products are designed and manufactured to meet or exceed OEM specifications and quality standards, so you can use these direct fit OE replacements with confidence. With the experiences we have and various professional certificates we hold, we are proud to offer our customers quality products at significant savings. Our products are from factories operate a Quality Management System which complies with the requirements of ISO 9001 and ISO/TS 16949 certificates; they have also been accessed by AFAQ-EAQA and complies with the Environment Management System requirements of ISO 14001 certificate. If you have any questions regarding this item before purchasing, please use the “Ask a question” link below located in “Questions and answers about this item” section. Please let us know any question you might have BEFORE placing your order. You can order from us with complete confidence! In no event shall we be liable for incidental or consequential damages.
