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Part fits the following years: 1962, 1963, 1964, 1965, 1966, 1967, 1968, 1969, 1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977

Grand Prix Rocker Arm Nuts, Perma-Loc Stamped Steel Rocker, 7/16", by ARP

Part# CH24061

Mfg# 300-8242

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SAVE: $7.96 Retail: $82.95

OPGI Price: $74.99


Brand: ARP
Part Type: (P) High Performance, designed to improve performance
Years: Sold As: KIT
2015 Grand Prix Catalog Page: 225
2016 Grand Prix Catalog Page: 233


  • NOTE1: These high-performance items are not eligible for any further discounts or promotional pricing.

ARP Perma-Loc rocker arm nuts are made not to loosen. Reason being, the adjuster body is heat-treated all the way through (not just casehardened), which eliminates "thread" movement. The threads are machined exactly perpendicular to the bottom of the adjuster, so it seats evenly and applies pressure on a full 360° circle. The screw is machined flush on the bottom (not pointed) to have optimum contact on the rocker arm stud.

Make & ModelYear RangeApplication Details
Chevrolet Chevelle1964-1977 Stamped Steel
Chevrolet Malibu1978-1988 Stamped Steel
Chevrolet El Camino1964-1977 Stamped Steel
Chevrolet El Camino1978-1988 Stamped Steel
Chevrolet Monte Carlo1970-1977 Stamped Steel
Chevrolet Monte Carlo1978-1988 Stamped Steel
Pontiac GTO1961-1973 Stamped Steel
Pontiac LeMans1961-1973 Stamped Steel
Pontiac Tempest1961-1973 Stamped Steel
Pontiac Grand Prix1959-1977 Stamped Steel Rocker, 7/16"
Pontiac Catalina1959-1977 Stamped Steel Rocker, 7/16"
Pontiac Bonneville1959-1977 Stamped Steel Rocker, 7/16"
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