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Part number: 135-4001
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Product Details
ARP 135-4001 Pro Series Cylinder Head Studs With Hex Nuts
Products specifications
Cut to Fit No
Fastener Finish Black oxide
Fastener Material 8740 chromemoly
Fastener Style Stud
Head Style Hex
Notes Will fit factory aluminum cylinder heads.
Quantity Sold as a kit.
Washers Included Yes

ARP uses a premium grade 8740 alloy, which is rated far superior to "aircraft" quality, for their Pro Series cylinder head studs. Each stud is placed vertically in special racks and precisely heat-treated to 200,000 psi to ensure complete heat penetration. Then the studs are centerless ground to make them as close to perfectly concentric as possible, unlike lesser quality studs. 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. By being thread rolled after heat-treat, these studs have 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. This cylinder head stud kit comes complete with premium quality parallel ground washers and conventional hex style nuts for select Chevrolet big block applications (cast OEM, Aluminum factory heads, also early Bowtie).

  • Centerless ground to be as perfectly concentric as possible
  • 1000% better fatigue strength than many other studs
  • Kit comes complete with premium quality parallel ground washers and traditional hex style nuts
  • Manufactured from a premium grade 8740 alloy that is heat-treated to 200,000 psi, which is considerably stronger than Grade 8 hardware
  • The choice of many top professional engine builders for their all-out competition powerplants
Reviews
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L
ARP 135=4001 Head Studs
Awesome product. Thanks guys
L
ARP 135=4001 Head Studs
Awesome product. Thanks guys
Fitment
Chevrolet Bel Air
1975 Chevrolet Bel Air ALL
1974 Chevrolet Bel Air ALL
1973 Chevrolet Bel Air ALL
1972 Chevrolet Bel Air ALL
1971 Chevrolet Bel Air ALL
1970 Chevrolet Bel Air ALL
1969 Chevrolet Bel Air ALL
1968 Chevrolet Bel Air ALL
1967 Chevrolet Bel Air ALL
1966 Chevrolet Bel Air ALL
1965 Chevrolet Bel Air ALL
Chevrolet Biscayne
1972 Chevrolet Biscayne ALL
1971 Chevrolet Biscayne ALL
1970 Chevrolet Biscayne ALL
1969 Chevrolet Biscayne ALL
1968 Chevrolet Biscayne ALL
1967 Chevrolet Biscayne ALL
1966 Chevrolet Biscayne ALL
1965 Chevrolet Biscayne ALL
Chevrolet Blazer
1973 Chevrolet Blazer ALL
Chevrolet Brookwood
1972 Chevrolet Brookwood ALL
1970 Chevrolet Brookwood ALL
Chevrolet C10 Pickup
1975 Chevrolet C10 Pickup ALL
1974 Chevrolet C10 Pickup ALL
1973 Chevrolet C10 Pickup ALL
1972 Chevrolet C10 Pickup ALL
1971 Chevrolet C10 Pickup ALL
1970 Chevrolet C10 Pickup ALL
1969 Chevrolet C10 Pickup ALL
1968 Chevrolet C10 Pickup ALL
Chevrolet C10 Suburban
1975 Chevrolet C10 Suburban ALL
1974 Chevrolet C10 Suburban ALL
1973 Chevrolet C10 Suburban ALL
1972 Chevrolet C10 Suburban ALL
1971 Chevrolet C10 Suburban ALL
1970 Chevrolet C10 Suburban ALL
1969 Chevrolet C10 Suburban ALL
1968 Chevrolet C10 Suburban ALL
Chevrolet C1500
1993 Chevrolet C1500 ALL
1992 Chevrolet C1500 ALL
1991 Chevrolet C1500 ALL
1990 Chevrolet C1500 ALL
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