ARP 7/16 Pro Series Cylinder Head Stud Kit 12-point Head for 289 & 302 Engines w/ 1/2 351 Windsor heads (154-4205)

STUD SET, CYLINDER HEAD, ARP RACING, 154-4005, 7/16 INCH TREAD SIZE, BLACK OXIDE FINISH, 8740 CHROME MOLY STEEL, INCL (20) HEAD STUDS, (20) 12 POINT HEAD NUTS, (20) 1/2 INSERT WASHERS, 200,000 PSI TENSILE STRENGTH, DESIGNED TO WORK WITH OEM OR OEM AFTERMARKET STYLE CYLINDER HEADS

If you are looking for the best option to properly install 351W or new aftermarket cylinder heads to your 289/302 Ford engine then this kit from NPD is just the ticket. This stud set features the ARP Racing part number 154-4005 and is designed to fit all 289/302 engine that require the original 7/16 head stud size. This kit from ARP Racing includes (20) 7/16 inch head studs both long and short style as well as (20) 12-point nuts and (20) hardened reducer washers/bushings. This set of cylinder head studs is from ARP Racing Pro Series and are 200,000 psi and kits come complete with hardened parallel-ground washers. So, if you are looking to add power and performance to your small block Ford engine but need the correct hardware, look at picking up this ARP Racing kit from NPD today!

Manufacture Note:

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, theres 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. Its 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 wont happen with inferior quality head studs.

ARP studs are thread rolled after heat-treat, which gives them about 1000% (thats 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 its tough on tooling, but the results are well worth the extra effort.

All Pro Series bolts are cold-forged to ensure molecular integrity, heat-treated prior to thread rolling and machining, and are rated nominally at 200,000 psi. ARP Pro Series head bolt kits are application specific designed for use with typically competition only components. These fasteners deliver superior strength and meet the ARP ZERO defect ZERO failure quality standard. Hardened and parallel-ground washers are included with each kit to ensure even load distribution and accurate torque readings. All Pro Series head bolts have a reduced wrenching hex or 12-point head and wide area flange to eliminate the need for valve train removal for cylinder head retorquing and permits the use of larger diameter valve springs. Most applications have undercut short bolts that can help eliminate head gasket failures through providing more stretch to compensate for the additional compression of gaskets.

You wont find a better quality stud on the market from any other source. Look for ARP stamped on each stud as your assurance of quality.

Installation Note:
-According to ARP this stud kit is designed to fit 289/302 engines with the 7/16 bolt size but with 351W heads or aftermarket style heads that are drilled for the 1/2 size bolts.
-This kit includes (20) correct 1/2 to 7/16 washer / reducers needed for proper head installation on 289/302 engines.
-This bolt set will not work with 351W / 5.8L engines or Ford Performance BOSS 302 blocks that feature the 1/2 inch bolt holes.
-If you are installing original/factory style or aftermarket style cylinder heads that are drilled for the 7/16 bolt size see NPD part number M-6014-8BARP for correct kit.

Note:
-If you are looking for this same kit but with the Hex head style nuts NPD has you covered. See part number M-6014-9AARP for correct Hex head style kit.

NPD Part Number : M-6014-9BARP
Manufacturer Reference #'s: ARP154-4205