Airflow Research (AFR) Engines & Components

Rocker Arm Studs, 3/8-24 in. Thread, 1.895 in. Effective Stud Length, Set of 16

Part Number: AFR-6409-16

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Valve Spring Locators, Valve Spring Seats, Inside Locating Shoulder Type, Chromoly, 0.570 in. I.D., 1.550 in. O.D., Set of 16

Part Number: AFR-8048-16

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Cylinder Heads, Oval Port, Assembled, Aluminum, 112cc Combustion Chamber, 290cc Intake, Chevy, Big Block, Pair

Part Number: AFR-3640

4.67 out of 5 stars ( 3 )

Estimated Ship Date: Today

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Cylinder Heads, Street Porting, Aluminum, Assembled, 65 cc Chamber, 180cc Intake, Chevy, 302/327/350/400, Pair

Part Number: AFR-0916

4.6 out of 5 stars ( 5 )

Estimated Ship Date: Today

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Valve, Intake, Dished, 2.250 in. Head Diameter, 0.250 in. Over Installed Length, Chevy, Big Block, Each

Part Number: AFR-7620-1

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Guide Plates, Flat, Steel, Hardened, 5/16 in. Pushrod Slot, Ford, Chevy, Small Block, Small Block Chevy, Each

Part Number: AFR-6103-1

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

Cylinder Heads, Street Porting, Aluminum, Assembled, 58cc Chamber, 165cc Intake, Pedestal, SBF, Pair

Part Number: AFR-1472

4.11 out of 5 stars ( 9 )

Estimated Ship Date: Today

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Cylinder Heads, Street Porting, Aluminum, Assembled, 75cc Chamber, 195cc Intake, Chevy, Small Block, Pair

Part Number: AFR-1036

5.0 out of 5 stars ( 5 )

Estimated Ship Date: Today

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Valves, Inconel, Exhaust, 1.880 in. Diameter, 0.344 in. Stem, 5.450 in. Length, Chevy, Big Block, Each

Part Number: AFR-7633-8

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Estimated Ship Date: Jan 26, 2026 if ordered today

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Cylinder Heads, Street Porting, Aluminum, Assembled, 72cc Chamber, 230cc Intake, Chevy, Small Block, LS1, Pair

Part Number: AFR-1630

4.8 out of 5 stars ( 5 )

Estimated Ship Date: Today

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Valve, Replacement, Exhaust, Stainless Steel, 1.570 in. Diameter, 8mm Stem, 5.030 in. Length, Ford, Each

Part Number: AFR-7248-1

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Valve Guide, Bronze, 0.505 in. o.d., Chevy, Ford, Each

Part Number: AFR-9056

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Jan 19, 2026 if ordered today

Cylinder Heads, Enforcer, Aluminum, Bare, 64cc Chamber, 195cc Intake, Straight Plug, Chevrolet, Small Block, Each

Part Number: AFR-1002

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Valve Spring Retainers, Chromoly Steel, 7 Degree, Single Spring, 1.250 in. O.D., Use with 8017 and 8019 Springs, Set of 16

Part Number: AFR-8514-16

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Valve Springs, Pacaloy Hydraulic Roller Spring 1.290 O.D., Premium Grade Chrome Silicon, Each

Part Number: AFR-8017-1

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Cylinder Heads, Street Porting, Aluminum, Assembled, 75cc Chamber, 195cc Intake, Chevy, Small Block, Pair

Part Number: AFR-1038

5.0 out of 5 stars ( 7 )

Estimated Ship Date: Today

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Valve, Replacement, Exhaust, Stainless Steel, 1.600 in. Diameter, Chevy, AFR LSX, Set of 8

Part Number: AFR-7228-8

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Valve, Replacement, Intake, 2.020 in. Head Diameter, 0.313 in. Stem Diameter, 4.900 in. Overall Length, Stainless Steel, Chevy, LS1, Set of 8

Part Number: AFR-7207-8

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Estimated Ship Date: Feb 4, 2026 if ordered today

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Cylinder Head Bolt, Bushing, Steel, Black Zinc, 1/2 in. O.D. x 7/16 in. I.D., Ford, Small Block, Set of 20

Part Number: AFR-6324

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Today

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Rocker Arm Stud Girdle, Eliminator, Aluminum, Chevy, Small Block, Pair

Part Number: AFR-6208

4.8 out of 5 stars ( 5 )

Estimated Ship Date: Today

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Valve Springs, Replacement, Dual, 629 lbs./in. Spring Rate, Electroplate Polishing, Solid Roller, Set of 16

Part Number: AFR-8031-16

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Valve Spring Locators, Outside Shoulder Type, 1.380 in. O.D., 0.570 in. I.D., Use with AFR 8017 and 8019 Valve Springs, Steel, Set of 16

Part Number: AFR-8042-16

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CYLINDER HEAD

Part Number: AFR-1803

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Estimated Ship Date: Jan 26, 2026 if ordered today

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Valve Springs, Replacement, Dual, 629 lbs./in. Spring Rate, Electroplate Polishing, Solid Roller, Each

Part Number: AFR-8031-1

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Valve, Replacement, Exhaust, Stainless Steel, 1.880 in. Head Diameter, 5.450 in. Length, Chevy, Big Block, Each

Part Number: AFR-7630-1

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Estimated Ship Date: Today