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Air Flow Research (AFR) Cylinder Heads & More
When NASCAR drivers need race-winning horsepower and torque, they turn to one company: Air Flow Research. For over thirty years, Air Flow Research has been engineering...
When NASCAR drivers need race-winning horsepower and torque, they turn to one company: Air Flow Research. For over thirty years, Air Flow Research has been engineering cylinder heads that deliver unmatched flow and power output. Manufactured with advanced porting technology, AFR heads are flow-tested and subjected to a rigorous quality control process to ensure maximum performance in all applications. Whether you pilot a top fuel dragster or a street machine, Air Flow Research has a set of cylinder heads designed for you. Shop AFR cylinder heads at Summit Racing!
When NASCAR drivers need race-winning horsepower and torque, they turn to one company: Air Flow Research. For over thirty years, Air Flow Research has been engineering cylinder heads that deliver unmatched flow and power output. Manufactured with advanced porting technology, AFR heads are flow-tested and subjected to a rigorous quality control process to ensure maximum performance in all applications. Whether you pilot a top fuel dragster or a street machine, Air Flow Research has a set of cylinder heads designed for you. Shop AFR cylinder heads at Summit Racing!
Showing In Stock Items. Show All 9 Items.
Rocker Arm Nuts, Stud Girdle Replacement Nuts, Full Roller, Polylock, 7/16-20 in., 2.00 in. Overall Length, Set of 16
Part Number: AFR-6214-16
Estimated Ship Date: Monday 4/27/2026 if shipped by air
Estimated Ship Date: Monday 4/27/2026 if shipped by air
Rocker Arm Nuts, Stud Girdle Replacement Nuts, Full Roller, Polylock, 7/16-20 in., 2.60 in. Overall Length, Set of 8
Part Number: AFR-6215-8
Not Yet Reviewed
Estimated Ship Date: Monday 4/27/2026 if shipped by air
Estimated Ship Date: Monday 4/27/2026 if shipped by air
Rocker Arm Nuts, Stud Girdle Replacement Nuts, Polylock, 3/8-24 in., Use with Small Block Chevy and Small Block Ford AFR Stud Girdles, Set of 16
Part Number: AFR-6216-16
Not Yet Reviewed
Estimated Ship Date: Monday 4/27/2026 if shipped by air
Estimated Ship Date: Monday 4/27/2026 if shipped by air
Rocker Arm Nuts, Stud Girdle Replacement Nuts, Polylock, 3/8-24 in., Use with Small Block Chevy and Small Block Ford AFR Stud Girdles, Each
Part Number: AFR-6216-1
Estimated Ship Date: Monday 4/27/2026 if shipped by air
Estimated Ship Date: Monday 4/27/2026 if shipped by air
Rocker Arm Nuts, Stud Girdle Replacement Nuts, Full Roller, Polylock, 7/16-20 in., 2.60 in. Overall Length, Each
Part Number: AFR-6215-1
Estimated Ship Date: Monday 4/27/2026 if shipped by air
Estimated Ship Date: Monday 4/27/2026 if shipped by air
Rocker Arms, Stud Mount, Full Roller, Aluminum, 1.7 Ratio, Fits 7/16 in. Stud, Chevy, Big Block, Set of 16
Part Number: AFR-6043
Estimated Ship Date: Monday 4/27/2026 if shipped by air
Estimated Ship Date: Monday 4/27/2026 if shipped by air
Rocker Arms, Full Roller, 0.050 in. Intake Offset, 1.6 Ratio, Aluminum, Orange, Chevy, Small Block, Set of 16
Part Number: AFR-6036
Estimated Ship Date: Monday 4/27/2026 if shipped by air
Estimated Ship Date: Monday 4/27/2026 if shipped by air
Rocker Arm Nut, Stud Girdle Replacement Nut Type, Full Roller, 7/16-20 in. Thread, Chevy, Ford, Set of 8
Part Number: AFR-6214-8
Not Yet Reviewed
Estimated Ship Date: Monday 4/27/2026 if shipped by air
Estimated Ship Date: Monday 4/27/2026 if shipped by air
Rocker Arm Nut, Stud Girdle Replacement Nut Type, Full Roller, 7/16-20 in. Thread, Chevy, Ford, Each
Part Number: AFR-6214-1
Estimated Ship Date: Monday 4/27/2026 if shipped by air
Estimated Ship Date: Monday 4/27/2026 if shipped by air
