Pioneer Cables S-1012 Engine Rocker Arm Nut

Engine Rocker Arm Nut for GM V8 Applications

Pioneer Cables S-1012 is an engine rocker arm nut for select Chevrolet, Pontiac, Buick, and Oldsmobile applications. It is listed for high-performance setups with an optional 7/16" stud configuration, making it a fitment-specific hardware choice for classic GM engine builds.

Key Features

• Engine rocker arm nut for valvetrain hardware service
• Fits select 1959-1980 Chevrolet, Pontiac, Buick, and Oldsmobile vehicles
• Application notes reference high-performance use with optional 7/16" stud setups
• Direct fitment coverage for classic muscle car and full-size GM platforms
• Pioneer Cables part number S-1012 for catalog and search reference

Detailed Description

Pioneer Cables S-1012 is a rocker arm nut used in engine valvetrain assemblies where correct stud and nut hardware is required. This part number appears across a wide range of classic GM applications, including Chevrolet Camaro, Corvette, Impala, Monte Carlo, Nova, and Pontiac GTO, Grand Prix, Firebird, and LeMans models. It also covers Buick Century, LeSabre, and Regal, along with Oldsmobile Delta 88, 98, and Custom Cruiser listings. For buyers searching for a rocker arm nut for a 1967-1972 Chevrolet Camaro, a 1966-1974 Chevrolet Corvette, or a 1970-1971 Pontiac GTO, S-1012 is the catalog reference to verify against the engine build.

This part cross-references no listed alternate part numbers in the provided data.

What It Is Used For

• Replacing worn or damaged rocker arm nuts in the valvetrain
• Restoring proper rocker arm retention on compatible GM engines
• Supporting engine rebuilds on classic Chevrolet, Pontiac, Buick, and Oldsmobile platforms
• Addressing loose, stripped, or mismatched rocker hardware during service
• Matching the correct hardware to 7/16" stud applications noted in the fitment data

Installation Notes and Tips

Verify stud size, thread pitch, and cylinder head configuration before installation. Match the rocker arm nut to the engine’s existing valvetrain hardware and confirm clearance during assembly. For best results, compare the part number S-1012 with the vehicle’s engine specifications and service documentation before final installation.

Quality Assurance

Use this part only where the fitment notes and engine hardware specifications align with the application. Confirm compatibility for the exact year, make, and model listed before purchase.