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Part fits the following years:1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988


1978-88 Monte Carlo Rocker Arm Lock Nuts, Perma-Loc Stud Girdle 7/16" 2.00" Length

Part# CH24064


Mfg# 300-8247

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SAVE: $21.96 Retail: $236.95

OPGI Price: $214.99


Part Type: (P) High Performance, designed to improve performance
Years: Sold As: KIT
2017 Late Monte Carlo Catalog Page: 246


Keep your rockers in place

Available for 3/8” or 7/16” studs

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

ARP "Perma-Loc" rocker 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.

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Estimated to arrive the
week of 04/01/2018
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