BCBC MRM-1720 Engine Rocker Arm Nut

Engine rocker arm nut overview

This Melling engine rocker arm nut is a stock replacement fastener for rebuild and valve train service. It is made in the USA and built from carbon steel with an extra-fine thread and open hex design for engine assembly work.

Fits a wide range of Chevrolet, Pontiac, Buick, GMC, Jeep, Isuzu, Cadillac, and Oldsmobile applications, including Chevrolet Camaro, Pontiac Firebird, and Buick Century models listed below. Part number MRM-1720 is used where a specific rocker arm nut is required for stock-style engine service.

• Carbon steel construction for engine hardware applications
• Open hex nut design for standard service access
• Extra-fine thread specification for valve train adjustment work
• Stock replacement nut grade for rebuild use
• Made in the USA

Fitment details

Compatible with stock applications across the listed vehicles. Fits 1982-1995 Chevrolet Camaro, N/A. Fits 1990-1995 Chevrolet Lumina APV, N/A. Fits 1982-1995 Pontiac Firebird, N/A. Fits 1990-1995 Pontiac Trans Sport, N/A. Fits 1990-1994 Chevrolet Cavalier, N/A. Fits 1982-1986 Chevrolet Cavalier, N/A. Fits 1994 Chevrolet Lumina, N/A. Fits 1990-1992 Chevrolet Lumina, N/A. Fits 1991-1994 Isuzu Pickup, N/A. Fits 1990-1994 Oldsmobile Silhouette, N/A. Fits 1991-1994 Pontiac Sunbird, N/A. Fits 1986 Pontiac Sunbird, N/A. Fits 1989-1993 Buick Century, N/A. Fits 1982-1986 Buick Century, N/A. Fits 1989-1993 Buick Regal, N/A. Fits 1990-1993 Chevrolet Beretta, N/A. Fits 1990-1993 Chevrolet Corsica, N/A. Fits 1993 Chevrolet Lumina, N/A. Fits 1982-1993 Chevrolet S10, N/A. Fits 1991-1993 GMC Sonoma, N/A. Fits 1989-1993 Oldsmobile Cutlass Supreme, N/A. Fits 1989-1993 Pontiac Grand Prix, N/A. Fits 1991-1992 Isuzu Rodeo, N/A. Fits 1989-1991 Isuzu Trooper, N/A. Fits 1988-1991 Pontiac 6000, N/A. Fits 1982-1986 Pontiac 6000, N/A. Fits 1990-1991 Pontiac Tempest, N/A. Fits 1990 Chevrolet Celebrity, N/A. Fits 1982-1986 Chevrolet Celebrity, N/A. Fits 1982-1990 GMC S15, N/A. Fits 1983-1989 Chevrolet S10 Blazer, N/A. Fits 1983-1989 GMC S15 Jimmy, N/A. Fits 1985-1988 Pontiac Fiero, N/A. Fits 1982-1986 Buick Skyhawk, N/A. Fits 1982-1986 Cadillac Cimarron, N/A. Fits 1984-1986 Jeep Cherokee, N/A. Fits 1986 Jeep Comanche, N/A. Fits 1984-1986 Jeep Wagoneer, N/A. Fits 1982-1986 Oldsmobile Cutlass Ciera, N/A. Fits 1982-1986 Oldsmobile Firenza, N/A. Fits 1980-1985 Buick Skylark, N/A. Fits 1984-1985 Chevrolet Citation II, N/A. Fits 1984-1985 Pontiac J2000 Sunbird, N/A. Fits 1980-1984 Oldsmobile Omega, N/A. Fits 1980-1984 Pontiac Phoenix, N/A. Fits 1980-1983 Chevrolet Citation, N/A. Fits 1982-1983 Pontiac J2000, N/A.

What this part helps address

• Worn or damaged rocker arm nuts during engine rebuilds
• Lost fasteners during disassembly and reassembly
• Thread wear that affects valve train adjustment
• Metal failure in aged engine hardware
• Stock-style replacement needs for listed applications

Installation notes and quality

Use new rocker arm nuts during engine rebuild and valve train service to support proper installation and adjustment. Verify thread specification and application details against the engine being serviced before assembly. Melling recommends replacing rocker arm nuts during rebuild work, and this part is manufactured to quality material standards for engine hardware service.