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Part fits the following years:1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966, 1967, 1968, 1969, 1970, 1971, 1972, 1973, 1974, 1975, 1976


1959-77 Bonneville Rocker Arm Nuts, Perma-Loc Aluminum Rocker, 7/16"

Part# CH24063

Mfg# 300-8246

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SAVE: $7.96 Retail: $82.95

OPGI Price: $74.99


Part Type: (P) High Performance, designed to improve performance
Years: Sold As: KIT
2016 Bonneville Catalog Page: 233
2017 Bonneville Catalog Page: 240


  • 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 Aluminum
Chevrolet Malibu1978-1988 Aluminum
Chevrolet El Camino1964-1977 Aluminum
Chevrolet El Camino1978-1988 Aluminum
Chevrolet Monte Carlo1970-1977 Aluminum
Chevrolet Monte Carlo1978-1988 Aluminum
Pontiac GTO1961-1973 Aluminum
Pontiac LeMans1961-1973 Aluminum
Pontiac Tempest1961-1973 Aluminum
Pontiac Grand Prix1959-1977 Aluminum Rocker, 7/16"
Pontiac Catalina1959-1977 Aluminum Rocker, 7/16"
Pontiac Bonneville1959-1977 Aluminum Rocker, 7/16"
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