Engines & Components
Availability
Welcome to your headquarters for horsepower—the place to get everything you need to build real power and performance! We’ve got competition-proven crate engines, performance-matched...
Welcome to your headquarters for horsepower—the place to get everything you need to build real power and performance! We’ve got competition-proven crate engines, performance-matched top end kits, and complete rotating assemblies from the biggest names in the industry. You can add a set of high-flow cylinder heads to your powerplant, upgrade your valvetrain, improve your oiling system, or drop in a new set of pistons. We also have a complete selection of crankshafts, connecting rods, harmonic balancers, pulleys, and engine brackets. We even have everything you need to restore the horsepower that time has stolen from your...
Welcome to your headquarters for horsepower—the place to get everything you need to build real power and performance! We’ve got competition-proven crate engines, performance-matched top end kits, and complete rotating assemblies from the biggest names in the industry. You can add a set of high-flow cylinder heads to your powerplant, upgrade your valvetrain, improve your oiling system, or drop in a new set of pistons. We also have a complete selection of crankshafts, connecting rods, harmonic balancers, pulleys, and engine brackets. We even have everything you need to restore the horsepower that time has stolen from your daily driver.
Rocker Arm Nuts, PRW RockerLoc, 7/16 in. Stud, Hex Head, .550 in. O.D. shank, Set of 16
Part Number: PQX-1200337
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Rocker Arm Nuts, PRW RockerLoc, 7/16 in. Stud, Hex Head, .550 in. O.D. shank, Each
Part Number: PQX-1200337-01
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Rocker Arm Nuts,ROCKER ARM ADJUSTERS, PRW RockerLoc, 3/8" Stud, 6 Point, .550" OD shank, Set of 16
Part Number: PQX-1200336
Estimated Ship Date: Sep 16, 2025 if ordered today
Estimated Ship Date: Sep 16, 2025 if ordered today
Rocker Arm Adjusting Screw
Part Number: PQX-1200336-01
Not Yet Reviewed
Estimated Ship Date: Sep 16, 2025 if ordered today
Estimated Ship Date: Sep 16, 2025 if ordered today
Rocker Arm Adjusting Screw
Part Number: PQX-1200335
Not Yet Reviewed
Estimated Ship Date: Sep 16, 2025 if ordered today
Estimated Ship Date: Sep 16, 2025 if ordered today
ROCKERLOC, 3/8" stud, GM LS Series specific, hex head, 14.3mm OD shank, Single Piece
Part Number: PQX-1200335-01
Not Yet Reviewed
Estimated Ship Date: Sep 16, 2025 if ordered today
Estimated Ship Date: Sep 16, 2025 if ordered today
Rocker Arm Nuts,ROCKER ARM ADJUSTERS, PRW RockerLoc, 7/16" Stud, 6 Point, .600" OD shank, Set of 16
Part Number: PQX-1200339
Not Yet Reviewed
Estimated Ship Date: Sep 16, 2025 if ordered today
Estimated Ship Date: Sep 16, 2025 if ordered today
Rocker Arm Adjusting Screw
Part Number: PQX-1200339-01
Not Yet Reviewed
Estimated Ship Date: Sep 16, 2025 if ordered today
Estimated Ship Date: Sep 16, 2025 if ordered today
Modal Header
Call To Order
This is a custom order part. You can order this part by Contacting Us.
Truck / SUV
Jeep®
Restoration
Stock Replacement
Late Model Muscle
Tools
Gifts, Clothing, & More
Circle Track
Street Rod
Powersports
Paint & Body
Marine
Jr Dragster
