Designed to keep the rocker arms positively locked for precise and critical valve train adjustments. Manufactured from quality grade steel, then heat-treated for extra strength and plated with a durable finish. Kits include 16 rocker arm nuts with socket head set screws and one hex key wrench.
Features:
- (16) Rocker Arm Nuts w/ Locks - 7/16"-20 Threads
- Includes Locks and Hex Wrench
- 9/16" Wrench Size & 7/32" Hex on Lock
- Overall Length of Nuts: .875"
- Shank O.D. .544"
- For Use with Aluminum Rocker Arms
- Fits Big Block Chevy and Pontiac V8
Vehicle Fitment:
The Vehicle Fitment Guide is to be used as a general reference. The data has been provided by our suppliers and manufacturers and may contain errors or incorrect data. Always refer to a professional to verify correct fitment for your vehicle.
| Make |
Model |
Years |
Engine |
Fitment Notes |
| Chevrolet |
Corvette |
1966 |
7.0L / 427 / V8 |
ULTRA SEAL; SURE-LOCK ROCKER ARM NUTS; 7/16 IN. STUD; FOR ALUMINUM ROCKER ARMS; 16 NUTS W/SOCKET HEAD SET SCREWS AND HEX KEY WRENCH; 0.544 IN OD SHANK; |
| Chevrolet |
Corvette |
1967 |
7.0L / 427 / V8 |
ULTRA SEAL; SURE-LOCK ROCKER ARM NUTS; 7/16 IN. STUD; FOR ALUMINUM ROCKER ARMS; 16 NUTS W/SOCKET HEAD SET SCREWS AND HEX KEY WRENCH; 0.544 IN OD SHANK; |
| Chevrolet |
Corvette |
1968 |
7.0L / 427 / V8 |
ULTRA SEAL; SURE-LOCK ROCKER ARM NUTS; 7/16 IN. STUD; FOR ALUMINUM ROCKER ARMS; 16 NUTS W/SOCKET HEAD SET SCREWS AND HEX KEY WRENCH; 0.544 IN OD SHANK; |
| Chevrolet |
Corvette |
1969 |
7.0L / 427 / V8 |
ULTRA SEAL; SURE-LOCK ROCKER ARM NUTS; 7/16 IN. STUD; FOR ALUMINUM ROCKER ARMS; 16 NUTS W/SOCKET HEAD SET SCREWS AND HEX KEY WRENCH; 0.544 IN OD SHANK; |
| Chevrolet |
Corvette |
1970 |
7.4L / 454 / V8 |
ULTRA SEAL; SURE-LOCK ROCKER ARM NUTS; 7/16 IN. STUD; FOR ALUMINUM ROCKER ARMS; 16 NUTS W/SOCKET HEAD SET SCREWS AND HEX KEY WRENCH; 0.544 IN OD SHANK; |
| Chevrolet |
Corvette |
1971 |
7.4L / 454 / V8 |
ULTRA SEAL; SURE-LOCK ROCKER ARM NUTS; 7/16 IN. STUD; FOR ALUMINUM ROCKER ARMS; 16 NUTS W/SOCKET HEAD SET SCREWS AND HEX KEY WRENCH; 0.544 IN OD SHANK; |
| Chevrolet |
Corvette |
1972 |
7.4L / 454 / V8 |
ULTRA SEAL; SURE-LOCK ROCKER ARM NUTS; 7/16 IN. STUD; FOR ALUMINUM ROCKER ARMS; 16 NUTS W/SOCKET HEAD SET SCREWS AND HEX KEY WRENCH; 0.544 IN OD SHANK; |
| Chevrolet |
Corvette |
1973 |
7.4L / 454 / V8 |
ULTRA SEAL; SURE-LOCK ROCKER ARM NUTS; 7/16 IN. STUD; FOR ALUMINUM ROCKER ARMS; 16 NUTS W/SOCKET HEAD SET SCREWS AND HEX KEY WRENCH; 0.544 IN OD SHANK; |
| Chevrolet |
Corvette |
1974 |
7.4L / 454 / V8 |
ULTRA SEAL; SURE-LOCK ROCKER ARM NUTS; 7/16 IN. STUD; FOR ALUMINUM ROCKER ARMS; 16 NUTS W/SOCKET HEAD SET SCREWS AND HEX KEY WRENCH; 0.544 IN OD SHANK; |
