Availability
AFR replacement valve springs are made for a variety of cylinder heads and engine types. They are available for hydraulic flat tappet, hydraulic roller, and solid roller camshaft applications. Whether you are working on a Ford, Chevy, or Mopar, AFR has the replacement valve springs that you need.
( 1 )
$16.80
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$497.70
If you're a serious racer, you'd better be sure that you're using strong valve spring retainers, such as these AFR titanium retainers. Stronger and lighter than steel, they're designed for 10 degree valve stem locks. These retainers work best with AFR valve locks and optional lash caps. And you can be sure that AFR titanium valve spring retainers won't split at high rpm, tearing up your engine. They're available in a variety of styles and sizes; find the model that's right for your application.
( 4 )
$13.65
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$386.40
Keep your valve springs in place with these AFR hardened spring cups. These spring cups are designed to give your valve spring a hardened surface to mate to so that the cylinder head is protected from damage and excessive movement is limited. AFR offers these hardened spring cups in a variety of diameters to help you find the right one to match your valve spring.
Not Yet Reviewed
$5.25
—
$82.95
Keep your valve springs seated properly with AFR chromoly valve spring retainers. These retainers offer superb performance in high-quality material widely used in motorsports. They are available in various styles and sizes, select the AFR valve spring retainers that best suit your application needs.
Not Yet Reviewed
$4.20
—
$82.95
AFR designed these valve spring seats to protect your aluminum head from the harder valve springs. When a valve spring is free to move slightly on an aluminum head, it will quickly wear and damage the cylinder head itself. These valve spring seats have been developed to prevent this type of damage from occurring. The spring seats are installed over the valve guide and have a tapered shape that prevents the spring from being able to move excessively in any direction. Cylinder heads can be a big investment, so protect them from damage with these AFR valve spring seats.
Not Yet Reviewed
$5.25
—
$82.95
AFR steel valve spring retainers are washers shaped to fit the top of the spring. They are responsible for keeping the correct pressure on the valve spring by locating it between the spring seat and the retainer itself. Order the size and style designed to fit your application.
Not Yet Reviewed
$4.20
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$69.30
AFR valve spring shims give your valve springs a boost! These shims are manufactured from prime-quality steel in three thicknesses to help you restore the springs' installed height and proper spring tension. Mount your springs properly for the appropriate tension with AFR valve spring shims.
Not Yet Reviewed
$1.99
—
$13.65
AFR's 335cc BBC Enforcer cylinder heads feature their Permanent Mold "As-Cast" Technology surfaces on the intake runners, exhaust runners, and combustion chambers that allow for extremely accurate and repeatable port location/performance. These budget-friendly heads are perfect for your 509 to 540 cu.in. operating below 6,500 rpm. They come fully assembled with the identical components found in AFR's higher end CNC-ported cylinder heads—such as ARP rockers studs, PAC Racing springs, Viton® valve seals, AFR adjustable guide plates, machined bead valve locks (not stamped), hardened spring seats, and AFR's one-piece 8mm 21 4N stainless steel valves. Order the cylinder heads recommended for your year/make and engine application.
( 5 )
$664.65
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$1,023.75
AFR 260cc LS3 Mongoose cylinder heads are 100 percent 5-axis, CNC-ported, and feature titanium retainers, A356 aluminum castings, and Pac Racing springs. These CARB certified heads require 4.000 in. or larger bore applications on up through 454 cu. in. engines operating at or below 7,000 rpm—and flow over 380 cfm at 0.700 in. lift and are designed primarily for street and strip applications. Other structural features include Air Flow Research's trademark 3/4 in. thick head deck, reinforced rocker stud bosses, and thick wall runners provide unparalleled durability. Use of AFR stud girdles and full roller rocker arms are required. When it comes to building power, start with these AFR 260cc LS3 Mongoose cylinder heads.
( 5 )
$3,490.20
Race-ready AFR 220cc SBC Eliminator racing heads feature 100 percent CNC-ported intakes with greater detail. They also come with 100 percent CNC-ported combustion chambers and 80cc exhaust ports with a 3/4 in. thick head deck (ideal for nitrous or blower applications). Standard valves are lightweight 8mm, 2.080 in. intakes and 1.600 in. exhausts with AFR's hardened ductile iron interlocking valve seats. The valve springs included are intended for use on roller camshafts. They also offer exceptional flow characteristics, a 23 degree valve angle, and standard valve spacing. These cylinder heads are perfect for 350 to 400 c.i.d. engines in bracket drag cars, sportsman oval trackers, and highly modified street-class cars operating between 3,000 and 7,500 rpm (higher rpm ranges are possible, depending on the combination of parts).
( 22 )
$2,592.45
AFR 195cc SBC Eliminator Street Heads are fully CNC-machined (combustion chamber, intake, and exhaust ports) and available in your choice of straight or angled plug versions. AFR 195cc heads feature a 75cc or 65cc combustion chamber with a 64cc exhaust port and a 3/4 in. thick head deck (ideal for nitrous or blower applications). Standard valves are lightweight 8mm, 2.050 in. intakes (competition versions are 2.080 in.) and 1.600 in. exhausts with AFR's hardened ductile iron interlocking valve seats. The valve springs included are intended for use on roller camshafts. The exceptional flow characteristics of AFR 195cc Eliminators, a 23 degree valve angle, and standard valve spacing make them the perfect street heads for 350 to 400 c.i.d. engines in the 2,000 to 6,500 rpm operating range. They carry CARB #D-250-2 when used on 1969-94 applications with the heat riser. Order the bare or assembled model recommended for your vehicle and engine.
( 40 )
$1,164.45
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$2,328.90
AFR 210cc LS1/LS2/LS6 Enforcer cylinder heads are available in standard and small bore applications. They feature Permanent Mold "As-Cast" Technology surfaces on the intake runners, exhaust runners, and combustion chambers that allow for extremely accurate and repeatable port location/performance. The budget-friendly heads are perfect for your OEM engine operating below 6,300 rpm. Fully assembled Enforcer models include the identical components found in AFR's higher end CNC-ported cylinder heads—such as PAC Racing springs, Viton® valve seals, machined bead valve locks (not stamped), hardened spring seats, and one-piece 8mm 21 4N stainless steel valves. The heads are available without any parts for the DIY. Sold as a single piece, two heads are required per engine.
( 2 )
$562.80
—
$780.15
AFR 210cc SBC Eliminator racing heads are available in two stages of performance. The race-ready version features 100 percent CNC-ported intakes—and 100 percent CNC-ported intakes with greater detail. They come with 100 percent CNC-ported combustion chambers and 80cc exhaust ports with a 3/4 in. thick head deck (ideal for nitrous or blower applications). Standard valves are lightweight 8mm, 2.080 in. intakes and 1.600 in. exhausts with AFR's hardened ductile iron interlocking valve seats. The valve springs included are intended for use on roller camshafts. The exceptional flow characteristics, 23 degree valve angle, and standard valve spacing make these the perfect cylinder heads for 350 to 400 c.i.d. engines in bracket drag cars, sportsman oval trackers, and highly modified street-class cars operating between 3,000 and 7,500 rpm (higher rpm ranges are possible, depending on the combination of parts). The 210cc aluminum cylinder heads are available for either standard or spread port exhausts, bare or assembled style.
( 16 )
$2,592.45
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$3,193.05
AFR stud girdles are designed to eliminate the rocker stud flexing and associated horsepower loss that come with today's high-lift cams and high-pressure valve springs. They are manufactured from sturdy anodized aluminum to keep your valvetrain rigid for maximum engine performance. Available for small block Chevy, small block Ford, and big block Chevy applications, the AFR stud girdles will maintain valvetrain longevity throughout the engine's entire rpm range.
( 55 )
$201.60
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$312.90
Air Flow Research (AFR), the authority in high performance CNC cylinder heads for over 55 years, is proud to introduce its latest innovations: Custom camshafts for the small block Chevy. Specifically developed to unleash the full potential of AFR's Eliminator CNC and Enforcer As-Cast cylinder heads, the camshafts deliver race-ready gains in a drop-in solution, backed by real-world dyno testing. Crafted in partnership with Andrews Products, a name synonymous with championship camshaft innovation and precision grind quality, these new profiles extend AFR's mission to give American muscle cars the power they deserve. Key benefits: * Upgraded to industry-preferred 8620 steel for superior strength and durability * Ideal for high-RPM builds, power adder applications, and aggressive street use * Exceptional wear resistance for long-term valvetrain stability * Improved core hardness allows for more precise and consistent grinds * Excellent response to heat-treating for a hardened surface without sacrificing ductility * Trusted in top-tier racing environments—now included in every AFR camshaft Stage 2 Camshaft specs: * Cam style: Retro Fit hydraulic roller (OE roller blocks 1987-2003 require the use of a cam button) * Camshaft use: Strip/high-RPM * Camshaft manufacturers description: The AFR camshaft was developed to pair perfectly with AFR's Eliminator CNC cylinder heads. Ideal for high-RPM, track focused engines * Intake duration at .050-inch lift: 23X/23X * Valve lift with factory 1.5 rocker arm ratio: 0.54X intake/0.54X exhaust *Valve lift with factory 1.6 rocker arm ratio: 0.58X intake/.058X exhaust * Lobe separation (degrees): 112 * Camshaft gear attachment: 3-bolt * Computer-controlled compatible: Yes * Valve springs required: Yes
Not Yet Reviewed
$385.00
AFR 195cc SBC Eliminator LT 23 degree cylinder heads feature100 percent CNC-ported intakes, exhausts, and chambers, as well as A356 aluminum castings and high-quality components throughout. They are emissions-legal (CARB E.O. #D-250-2 for engines up to 1994). These LT1/LT4 heads are designed for the Gen II reversed-cooled SBC engines from 1992-97, and are machined to accept both center bolt and perimeter bolt valve covers. Their excellent build and flow characteristics are recommended for displacements up to 400 cu. in. with an operating range up to 6500 rpm (6,500 – 6,800 rpm for the Competition heads). AFR 195cc SBC Eliminator LT heads typically include: * 8mm bead lock intake and exhaust valves * Hydraulic dual valve spring * 7 degree chromoly retainers * 7 degree bead lock valve keepers * ARP rocker studs * Adjustable 5/16 in. guide plates * Viton valve seals * Hardened valve spring * Ductile iron intake and exhaust valve seats * 8mm bronze valve guides
( 1 )
$2,499.00
AFR 200cc SBC Enforcer Cylinder heads feature their Permanent Mold "As-Cast" Technology surfaces on the intake runners, exhaust runners and combustion chambers that allow for extremely accurate and repeatable port location/performance. These budget-friendly heads are perfect for your 350 to 400 cu. in. operating below 6,000 rpm. They come fully assembled with the identical components found in their higher end CNC-ported cylinder heads, such as ARP rockers studs, Melling Racing springs, Viton® valve seals, AFR adjustable guide plates, machined bead valve locks, hardened spring cups and ductile iron seats, and their one-piece 8mm 21 4N stainless steel valves. The AFR 200cc SBC Enforcer cylinder heads are available in straight or angle plug, assembled or bare.
( 2 )
$789.60
AFR 195cc SBC Eliminator competition heads are fully CNC-machined (combustion chamber, intake, and exhaust ports) and available in your choice of straight or angled plug versions. These heads feature a 75cc or 65cc combustion chamber with a 64cc exhaust port with competition porting and a 3/4 in. thick head deck (ideal for nitrous or blower applications). Standard valves are lightweight 8mm, 2.050 in. intakes (competition versions are 2.080 in.) and 1.600 in. exhausts with AFR's hardened ductile iron interlocking valve seats. The valve springs included are intended for use on roller camshafts. The exceptional flow characteristics of the AFR 195cc Eliminators, a 23 degree valve angle, and standard valve spacing make them the perfect competition heads for 350 to 400 c.i.d. engines in the 2,000 to 6,500 rpm operating range. They carry CARB #D-250-2 when used on 1969-94 applications with the heat riser. Order the bare or assembled model recommended for your year/make and engine family.
( 3 )
$3,166.80
AFR 300cc Magnum BBC cylinder heads are suggested for aggressive builds. They boast 100 percent CNC-ported intake, exhaust, and chambers—as well as A356 aluminum casting and high-quality components throughout. These oval port competition packages are available with hydraulic or solid roller springs; and bare or assembled style.
( 3 )
$4,193.70
If huge horsepower is what you're searching for, then AFR 345cc Magnum BBC cylinder heads will certainly deliver. They're recommended for radical street/strip, Pro Street, or racing applications on engines up to 572 cu. in. operating below 7,000 rpm—and are capable of flowing 400 cfm at 0.700 in. of lift. These A356 aluminum heads are designed for maximum horsepower and rpm capability, with an average primary operating range of 3,500-8,000 rpm; they also provide impressive torque figures. AFR recommends the use of .120 in. wall pushrods and full-roller rocker arms for strength. It's vital that you check clearance of all moving parts due to the vast array of rocker arms, lifters, cams, springs, etc. Don't forget to check pushrod-to-head clearance, as well as any potential interference from your rocker arms and spring assemblies prior to final engine assembly. AFR 345cc Magnum BBC cylinder heads come standard with AFR's trademark 3/4 in. thick cylinder head deck, reinforced rocker stud bosses, and premium one-piece stainless steel 2.300 in. intake and 1.880 in. exhaust valves.
( 4 )
$4,050.90
AFR 195cc SBC Enforcer Cylinder heads feature their Permanent Mold "As-Cast" Technology surfaces on the intake runners, exhaust runners and combustion chambers that allows for extremely accurate and repeatable port location/performance. These budget-friendly heads are perfect for your 350 to 400 cu. in. operating below 6,000 rpm. They come fully assembled with the identical components found in their higher end CNC-ported cylinder heads, such as ARP rockers studs, PAC Racing springs, Viton® valve seals, AFR adjustable guide plates, machined bead valve locks, hardened spring cups and ductile iron seats, and their one piece 8mm 21 4N stainless steel valves. The AFR 195cc SBC Enforcer cylinder heads are available in straight or angle plug, assembled or bare.
( 1 )
$434.70
Air Flow Research (AFR), the authority in high performance CNC cylinder heads for over 55 years, is proud to introduce its latest innovations: Custom camshafts for the small block Chevy. Specifically developed to unleash the full potential of AFR's Eliminator CNC and Enforcer As-Cast cylinder heads, these camshafts deliver race-ready gains in a drop-in solution, backed by real-world dyno testing. Crafted in partnership with Andrews Products, a name synonymous with championship camshaft innovation and precision grind quality, these new profiles extend AFR's mission to give American muscle cars the power they deserve. Key benefits: * Upgraded to industry-preferred 8620 steel for superior strength and durability * Ideal for high-RPM builds, power adder applications, and aggressive street use * Exceptional wear resistance for long-term valvetrain stability * Improved core hardness allows for more precise and consistent grinds * Excellent response to heat-treating for a hardened surface without sacrificing ductility * Trusted in top-tier racing environments—now included in every AFR camshaft Stage 1 Camshaft specs: * Cam style: Retro Fit hydraulic roller (OE roller blocks 1987-2003 require the use of a cam button) * Camshaft use: Strip/high-RPM * Camshaft manufacturers description: The AFR camshaft was developed to pair perfectly with AFR's Eliminator CNC cylinder heads. Ideal for high-RPM, track focused engines * Intake duration at .050-inch lift: 22X/23X * Valve lift with Factory 1.5 rocker arm ratio: 0.53X intake/0.54X exhaust * Valve lift with Factory 1.6 rocker arm ratio: 0.56X intake/.058X exhaust * Lobe separation (degrees): 112 * Camshaft gear attachment: 3-bolt * Computer-controlled compatible: Yes * Valve springs required: Yes
Not Yet Reviewed
$385.00
Looking to increase the performance of your Gen III-powered vehicle? AFR 185cc Black Hawk Gen 3 Hemi cylinder heads are to be offered in as-cast and fully CNC ported versions, either assembled or as no-parts (bare) heads to provide the power and performance Mopar enthusiasts crave. Manufactured using A356 aluminum and permanent-mold technology, AFR castings are second to none. Assembled pairs will come with high-quality components, such as PAC Racing springs, Titanium (CNC versions) or stainless steel retainers, AFR valves, and Viton® valve seals.
Not Yet Reviewed
$1,464.00
Looking to increase the performance of your Gen III-powered vehicle? AFR 212cc Black Hawk Gen 3 Hemi cylinder heads are to be offered in as-cast and fully CNC ported versions, either assembled or as no-parts (bare) heads to provide the power and performance Mopar enthusiasts crave. Manufactured using A356 aluminum and permanent-mold technology, AFR castings are second to none. Assembled pairs will come with high-quality components, such as PAC Racing springs, Titanium (CNC versions) or stainless steel retainers, AFR valves, and Viton® valve seals.
Not Yet Reviewed
$2,105.00
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