Cylinder Heads, Valve Seats, Head Bolts, Top End Kits & More

Cylinder Head, Enforcer, Aluminum, Assembled, 64cc Chamber, 210cc Intake, Cathedral Port, Chevrolet, LS, Each

Part Number: AFR-1501

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 4/13/2026 if shipped by air

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Cylinder Head, Enforcer, Aluminum, Assembled, 64cc Chamber, 210cc Intake, Cathedral Port, Small Bore, Chevrolet, LS, Each

Part Number: AFR-1506

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Estimated Ship Date: Monday 4/13/2026 if shipped by air

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Cylinder Head, 250cc LS1/LS6, Aluminum, 61cc Chamber, 250cc Runner, 2.080 in. Intake Valve, 1.600 in. Exhaust Valve, 0.650 in. Max Lift, Chevy, Each

Part Number: HPE-HPLS1250

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Estimated Ship Date: Jul 7, 2026 if ordered today

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Cylinder Head, LS, Aluminum, Cathedral, Bare, Small Bore, Enforcer, Each

Part Number: AFR-1502

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Estimated Ship Date: Monday 4/13/2026 if shipped by air

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Cylinder Head, Enforcer, Aluminum, Bare, 64cc Chamber, 210cc Intake, Cathedral Port, Small Bore, Chevrolet, LS, Each

Part Number: AFR-1507

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Estimated Ship Date: Monday 4/13/2026 if shipped by air

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Cylinder Head, 255cc, Intake Runner, 69 cc Combustion Chamber Volume, Assembled, 2.160 Intake Valve Diameter, Angled Plug, LS, Chevy Each.

Part Number: HPE-2CT13S1

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Estimated Ship Date: Monday 4/13/2026 if shipped by air

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LS 12-POINT HEAD STUD KIT CHROME MOLY MATERIAL

Part Number: EW1-17303

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Estimated Ship Date: Monday 4/13/2026 if shipped by air

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Cylinder Head, GenX® 255 HD, CNC Competition Ported, Assembled, 67cc CNC Combustion Chambers, Titanium Retainers, 6-Bolt Pattern, GM LS3, LSX, Each

Part Number: TFS-3261T004-CH1

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Estimated Ship Date: Monday 4/13/2026 if shipped by air

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Valve Guides, Bronze, Chevy, Small Block, LS1, Set of 16

Part Number: TFS-30600251

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Estimated Ship Date: Monday 4/13/2026 if shipped by air

BOLT KIT, CYLINDER HEAD, GM CHEVY, LS1, LS6, 4.8, 5.3, 5.7, 6.0L, 2004-Up, SCM-4140 Alloy Steel, 6pt hex head, 200,000 PSI

Part Number: PQX-1034621

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Estimated Ship Date: Jun 12, 2026 if ordered today

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Cylinder Heads, Aluminum, Assembled, 62cc Combustion Chamber, 230cc Intake, Chevy, Small Block, LS1, Pair

Part Number: AFR-1610

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 4/13/2026 if shipped by air

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Valve Seat, Ductile Iron, Exhaust, 1.680 in. Outside Diameter, Chevy, Small Block, LS1, Each

Part Number: TFS-30600274-1

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Estimated Ship Date: Monday 4/13/2026 if shipped by air

+.010 AFR SBF/LS1 Oversize Intake Seat for 165cc

Part Number: AFR-9059OS

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Estimated Ship Date: Jun 8, 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: Monday 4/13/2026 if shipped by air

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Valve Seats, Ductile Iron, Exhaust, 1.625 in. Outside Diameter, Chevy, Small Block, LS1, Set of 8

Part Number: TFS-30600272

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Estimated Ship Date: Monday 4/13/2026 if shipped by air

Valve Guide, Bronze, Chevy, Small Block, LS1, Each

Part Number: TFS-30600251-1

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Estimated Ship Date: Monday 4/13/2026 if shipped by air

ALUMINUM CYLINDER HEAD - LS1/LS6, 210cc INTAKE RUNNER, 64cc COMBUSTION CHAMBER, GM 243 STYLE, 1-PC

Part Number: TSN-JM4500

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Estimated Ship Date: Jun 15, 2026 if ordered today

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Valve Seat, Ductile Iron, Intake, 2.125 in. Outside Diameter, Chevy, Small Block, LS1, Each

Part Number: TFS-30600271-1

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Estimated Ship Date: Monday 4/13/2026 if shipped by air

Valve Seat, Ductile Iron, Exhaust, 1.625 in. Outside Diameter, Chevy, Small Block, LS1, Each

Part Number: TFS-30600272-1

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Estimated Ship Date: Monday 4/13/2026 if shipped by air

+.010 AFR SB Ford/LS1 Oversize Exhaust Seat

Part Number: AFR-9069OS

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Estimated Ship Date: Jun 8, 2026 if ordered today

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Valve Seats, Ductile Iron, Exhaust, 1.680 in. Outside Diameter, Chevy, Small Block, LS1, Set of 8

Part Number: TFS-30600274

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Estimated Ship Date: Monday 4/13/2026 if shipped by air

Valve Seats, Ductile Iron, Intake, 2.125 Outside Diameter, Chevy, Small Block, LS1, Set of 8

Part Number: TFS-30600271

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Estimated Ship Date: Monday 4/13/2026 if shipped by air

Cylinder Heads, LSX Mongoose, Aluminum, Assembled, 65cc Combustion Chamber, 230cc Intake, Chevy, Pair

Part Number: AFR-1660

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 4/13/2026 if shipped by air

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Cylinder Head Bolts, Hex Head, GM, Kit

Part Number: FEL-ES72196

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 4/13/2026 if shipped by air

Engine Valve Guide 00-17 BUI/CHV/GMC/OLD/PON/SAT 2.0L/2.2L/2.4L

Part Number: EGN-GD3029

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Estimated Ship Date: May 4, 2026 if ordered today

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