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70 Results Found For "5/16 valve stem seals"
Showing In Stock Items. Show All 101 Items.
Fel-Pro Valve Stem Seals
Fel-Pro valve stem seals are available in a variety of sizes, styles, and materials. These small components perform a valuable role—controlling the lubrication of the valve stems as they slide in the valve guide. Too little oil causes stem and guide wear; too much increases oil consumption and can cause a buildup of carbon. This can lead to valve seat damage and early valve grind. Order the replacement set recommended for your vehicle and engine application.
( 112 )
$13.99
Manley Viton® Valve Stem Seals
Manley Viton® valve stem seals are designed to keep oil out of the combustion chamber. They are manufactured from special Viton® material for maximum control and durability throughout the entire rpm range. The seals feature a special smaller design to allow for clearance in small inside-diameter valve springs.
( 18 )
$2.05
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$32.76
COMP Cams Valve Seals
COMP Cams offers a complete line of valve seals, from the stock GM O-rings to the positive-stop PTFE seals. They are a must to keep unwanted oil from entering the combustion chamber through the clearance in the valve guides. The O-ring seals use the standard retainer and oil splash shield. The umbrella seals are normally used when a larger-than-stock diameter spring is used. In the case of a double spring, the positive stop PTFE seals are used. For triple-spring applications, use the smaller-diameter Viton® seals.
( 198 )
$6.95
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$53.95
Manley All-PTFE Valve Stem Seals
Manley high performance all-PTFE valve stem seals wipe excess oil from the valve stem by means of a unique, spring-loaded wiper assembly, providing maximum valve stem oil control. These seals are a definite must! They stop unwanted oil from reaching and contaminating the cylinder and are available to fit different applications. So, whether you are planning an engine overhaul or a cam change--don't forget the valve stem seals!
Not Yet Reviewed
$1.98
Mahle Original Valve Stem Seals
Mahle Original valve stem seals control the lubrication of the valve stem as it slides into the valve guide. Too little oil contributes to stem and guide wear. Too much oil increases oil consumption and can cause a buildup of carbon, leading to valve seat damage and early valve failure, as well as reduced engine performance and emission failures. Mahle Original valve stem seals ensure dependable performance and superior service life.
( 17 )
$7.99
Enginetech Engine Valve Stem Oil Seals
Enginetech provides a comprehensive line of high-quality engine valve stem oil seals designed for durability, featuring materials like Viton®, silicone, and polyacrylate to prevent oil seepage past valve guides. Enginetech offers Premium Positive, Premium Umbrella, and OE-type valve stem seals to fit various American and import, passenger, and heavy-duty applications. Family owned and operated since 1982, Enginetech is the engine builder's source for high-quality engine parts. Enginetech offers a complete line of products for virtually every engine, including import and domestic engines.
Not Yet Reviewed
$4.99
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$25.99
Brodix Cylinder Heads IK 200 Cylinder Heads for Small Block Chevy
Brodix Cylinder Heads IK 200 cylinder heads for small block Chevys will give you big-time performance. Made from revolutionary lightweight castings, these virgin aluminum, fully assembled cylinder heads are specifically designed for optimum versatility. Features: * 200cc intake ports * 64cc or 70cc combustion chambers * Manganese bronze valve guides * Valve seats for use with unleaded gas * End-milled and drilled for accessories * 2.02 in./1.60 in. stainless steel valves * Valve springs * Valve stem seals * 5/16 in. guideplates * Rocker arm studs * Retainers * Locks
( 39 )
$1,493.99
Brodix Cylinder Heads IK 180 Cylinder Heads for Small Block Chevy
Brodix IK 180 cylinder heads for small block Chevys will give you big-time performance. Made from revolutionary lightweight castings, these virgin aluminum, fully assembled cylinder heads offer the following features: * 180cc intake ports and 64cc or 70cc combustion chambers * Manganese bronze valve guides * Valve seats for use with unleaded gas * End-milled and drilled for accessories * 2.02 in./1.60 in. stainless steel valves * Valve springs * Valve stem seals * 5/16 in. guideplates * Rocker arm studs * Retainers * Locks
( 31 )
$1,355.99
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$1,493.99
AFR 195cc SBF Competition Cylinder Heads
AFR 195cc SBF competition cylinder heads feature 100 percent CNC-machined intake ports, exhaust ports, and combustion chambers. Manufactured in A356 aluminum and assembled with high-quality components, these AFR 195cc SBF competition heads are recommended for displacements up to 408 cu. in., and operating up to 6500-6800 rpm. They are not compatible with OEM pistons. They are available with or without EGR and air pump, as well as with either 58cc or 72cc chamber sizes. Components for these AFR cylinder heads include: * Competition 5-angle valve job * 8mm bead lock intake valve * 8mm bead lock exhaust valve * PAC racing spring 1.270 in. O.D. hydraulic roller dual valve spring; 155 lbs. on seat, .650 in. maximum lift, maximum rpm 7000 to 7200 * 7 degree chromoly retainers * 7 degree bead lock valve keepers * 7/16 in. rocker studs * Adjustable 5/16 in. guide plates * Viton® valve seals * Hardened valve spring I.D. locator * Ductile iron intake valve seats 2.131 in. O.D x 1.680 in. I.D x .375 in. deep * Ductile iron exhaust valve seats 1.650 in. O.D x 1.350 in. I.D x .375 in. deep * Bronze valve guides * Air injector reducer bushing
( 3 )
$2,691.00
Ford Performance Parts Z2 Velocity Vane Cylinder Heads
Ford Performance Parts Z2 Velocity Vane cylinder heads improve power throughout the rpm range. Developed with advanced computer-aided engineering simulation tools, Ford Z2 aluminum heads feature their unique Velocity Vane intake port design that delivers outstanding street/strip power. These high performance cylinder heads are direct bolt-ons for Ford 289/302/351W engines, and they retain OEM exhaust, intake, and accessory mounting locations. Ford Z2 Velocity Vane cylinder head specs: * Cast from prime 356 T6 aluminum * Heads retain Ford OEM intake and exhaust port location and flange * Velocity Vane in port floor directs airflow around the valve stem, leading to more horsepower and torque throughout the full power range * 20 degree inline valve angle * Premium stainless steel valves: 2.05 in. intake, 1.60 in. exhaust valves * PAC 1219X conical-style valve springs with machined retainers and 10 degree machined valve locks--most hydraulic cams can be used with these springs * Valve spring closed pressure: 145 lbs. at 1.800 in. * Valve spring open pressure: 358 lbs. at 1.175 in. * Coil bind at 1.100 in., 0.650 in. max lift * Includes laser-cut guide plates for use with 5/16 in. pushrods and 7/16 in. rocker studs * Steel alloy intake and exhaust valve seats * Manganese-bronze valve guides * 63cc combustion chamber
( 2 )
$1,299.99
Summit Racing™ 64cc Aluminum Cylinder Heads for Small Chevy
Don't sacrifice quality for a low price--get both with our Summit Racing™ 64cc aluminum cylinder heads for small Chevy. The lightweight heads are cast from A-356 aluminum alloy and have 200cc intake ports, 64cc combustion chambers, phosphorous bronze valve guides, and ductile iron valve seats for use with unleaded gas. They're also end-milled and drilled for accessories. The fully assembled heads have 2.02 in. intake and 1.60 in. stainless steel exhaust valves, valve springs, 7 degree valve locks, 3/8 in. rocker arm studs, and 5/16 in. guideplates.
( 30 )
$1,329.99
ATK High Performance Aluminum Cylinder Heads for Small Block Chevrolet
Outfit your top end with a set of these assembled ATK High Performance aluminum cylinder heads for small block Chevrolet. They're cast, machined, and assembled with A356 aluminum alloy. The heads feature the latest port designs for maximum efficiency and increased power, and improved stock exhaust port location for better header fitment. ATK High Performance aluminum cylinder heads for small block Chevrolet include: * 2.020 in. stainless steel, swirl polished with undercut stem intake valves * 1.600 in. stainless steel, swirl polished with undercut stem exhaust valves * Manganese bronze valve guides * Alloy valve seats * 1.437 in. diameter valve springs (.600 in. max valve lift) * Chromoly 7-degree valve spring retainers * Single groove 7-degree valve locks * Valve spring locators * 5/16 in. flat pushrod guideplates * 3/8-24 in. rocker arm studs
Not Yet Reviewed
$798.99
Summit Racing™ Precision Cast Cylinder Head
Summit Racing™ precision cast cylinder heads are made from tough A-356 aluminum alloy and feature Permanent Mold "As-Cast" technology. Port accuracy is unrivaled--meaning CNC porting is not required to provide superior flow. The result is CNC-ported performance at a fraction of the price! We start with precision CNC-finished faces and bolt holes for accuracy and fitment. American craftsmen expertly size and install the manganese bronze valve guides and interlocking ductile iron seats before finishing with a competition-grade valve job. From there, the decks are given a final pass for superior finish. They are finish-assembled in the USA with top-quality components like PAC Racing springs, fasteners, one-piece 21 4N stainless valves, machined locks, Viton® seals and chromoly steel retainers. The final result is the performance you want and Summit Racing™ quality you TRUST!
( 21 )
$624.99
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$764.99
Edelbrock Performer RPM Cylinder Heads
Edelbrock Performer RPM aluminum cylinder heads feature threaded inserts in the rocker studs and exhaust manifold bolt holes for superior strength and durability. They also include hardened seats, bronze valve guides, and fully machined valve cover rails for a more consistent gasket seal. These heads offer improved power throughout the RPM range for greater throttle response and top-end horsepower. Countless options are available; order the model recommended for your vehicle and engine application.
( 173 )
$969.95
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$1,405.50
AFR 200cc SBC Enforcer Cylinder Heads
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 )
$693.00
BluePrint Engines Muscle Series Cylinder Heads
Welcome to a new class of high performance cylinder heads--BluePrint Muscle Series! These aluminum heads are assembled with the perfect match of components for outstanding, trouble-free performance. Plus, they give you more power behind the wheel and in your wallet! These all-cast heads are designed for hydraulic flat tappet and hydraulic roller cam engines with hefty intake runners, stainless steel valves, Viton® seals, and dual springs. BluePrint Engines stand in front of the class, offering both performance and cost-conscious enthusiasts a powerful alternative--Muscle Series cylinder heads.
( 89 )
$849.00
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$1,599.00
Edelbrock Performer Cylinder Heads
All Edelbrock aluminum cylinder heads feature threaded inserts in the rocker studs and exhaust manifold bolt holes for superior strength and durability. They also include hardened seats, bronze valve guides, and fully machined valve cover rails for a more consistent gasket seal. They offer improved power throughout the rpm range for greater throttle response and top-end horsepower. The intake and exhaust runners are CNC-machine profiled for superior flow and performance.
( 42 )
$1,059.50
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$1,625.50
Trick Flow® High Port® 192 Cylinder Heads for Small Block Ford
Trick Flow High Port® 192 cylinder heads are among the most dominant aftermarket small block Ford heads in racing. They feature unique valve spacing, .750" raised exhaust runners, extra strong castings and thick decks for additional rigidity and gasket integrity, superior cooling characteristics, and most importantly, excellent airflow. The large Fast As Cast® runners duplicate the profiles of CNC-ported heads to create ultra-high flowing heads without costly CNC-porting. The entry into the intake runner has been reshaped to help seal the area along the port roof and thicker port walls increase strength and provide more material for porting. Plus, interlocking ductile iron seats are used to handle the stresses of high heat, high horsepower applications. Other features include fully CNC-profiled combustion chambers with port-to-valve seat blending (bowl blending) and raised valve cover rails. Trick Flow High Port 192 cylinder heads are available fully assembled or as bare castings. Sold individually.
( 1 )
$1,149.99
AFR 195cc SBC Enforcer Cylinder Heads
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.
( 22 )
$643.00
VEGE Remanufactured Cylinder Heads
VEGE Remanufactured cylinder heads are a popular choice for performance and value. With its advanced and efficient production process, backed by more than eight decades of experience, VEGE is able to supply remanufactured cylinder heads with a level of quality that equals that of new OEM products—at extremely competitive prices. The rebuilt cylinder heads are carefully inspected, cleaned, and then fully machined and assembled with top-of-the-line components. Unless otherwise noted, the assemblies include a cast iron or aluminum cylinder head, intake and exhaust valves, valve springs, retainers, locks, stem seals, rocker arm studs, and more. Many heads include rocker arms. Nearly a thousand models are available, for fitment on countless applications.
( 47 )
$244.99
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$574.99
FLOTEK 180cc Small Block Chevy Cylinder Heads
FLOTEK 180cc small block Chevy cylinder heads are economically priced, out-of-the-box-ready bolt-ons. They include state-of-the-art aluminum casting, 180cc intake ports that are specifically designed for outstanding versatility, and 64cc combustion chambers. Among their standard features: aluminum alloy construction, phosphorous bronze valve guides, high-nickel valve seats—plus ends milled and drilled for accessories, as well as straight or angle spark plugs. Besides the assembled options, these cylinder heads are also offered bare. When choosing the right heads, it's quality, performance, and price that matter most. FLOTEK 180cc Chevy small block heads deliver on all three! NOTE: This item is not sold as a pair; this is a single cylinder head.
( 28 )
$478.82
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$479.00
Trick Flow® High Port® 225 Cylinder Heads for Small Block Ford
Trick Flow® High Port® 225 cylinder heads are specifically designed for large cubic inch small block Ford engines as well as engines with high-boost superchargers or turbos, big shot nitrous oxide systems, and other mega-power combinations. They feature unique valve spacing, .750" raised exhaust runners, extra strong castings and thick decks for additional rigidity and gasket integrity, superior cooling characteristics, and most importantly, excellent airflow. Top-of-the-line CNC Competition Ported runners with a high resolution surface finish provide maximum airflow and power over the entire rpm range. The entry into the intake runner has been reshaped to help seal the area along the port roof and thicker port walls increase strength and provide additional material for porting. Plus, interlocking ductile iron seats are used to handle the stresses of high heat, high horsepower applications. Other features include fully CNC-profiled combustion chambers with port-to-valve seat blending (bowl blending) and raised valve cover rails. Trick Flow® High Port® 225 cylinder heads are available fully assembled or as bare castings and sold individually.
( 3 )
$1,549.99
Edelbrock Performer LT1 Cylinder Heads
These Edelbrock Performer LT1 cylinder heads are designed for the 1992-97 LT1 engines. They produce approximately 24 hp more than factory-stock LT1 heads, and raise peak power levels by 500 rpm. They work with stock or aftermarket self-aligning roller rocker arms. These Edelbrock Performer LT1 aluminum cylinder heads feature threaded inserts in the rocker studs and exhaust manifold bolt holes for superior strength and durability, plus hardened seats, bronze valve guides, and fully machined valve cover rails for a more consistent gasket seal. They offer improved power throughout the rpm range for greater throttle response and top-end horsepower. The intake and exhaust runners are CNC-machine profiled for superior flow and performance.
( 1 )
$1,087.50
Trick Flow® Twisted Wedge 11R® 227 Cylinder Heads for Small Block Ford
Twisted Wedge® 11R 227 cylinder heads represent Trick Flow's ultimate development of the Twisted Wedge® innovation, featuring Trick Flow's most efficient combustion chamber design. The combustion chamber and valve layout move the intake valves away from the cylinder walls to reduce valve shrouding, significantly improving flow at higher lift. Shallow 11° intake/13° exhaust valve angles improve piston-to-valve clearance for high lift cams and reduce chamber volume for improved compression and efficiency. High velocity runners are optimized on the flow bench and dyno proven to outperform the competition on hydraulic roller camshaft engines. Premium materials and components, along with world-class CNC processes, guarantee uncompromising quality and durability, dimensional accuracy, and balanced flow from port-to-port. Machined castings increase strength and have a billet-like appearance. Additional features include CNC-profiled combustion chambers, 2.080"/1.600" stainless steel intake/exhaust valves, Trick Flow® by PAC Racing valve springs, and titanium retainers. Twisted Wedge® 11R 227 heads have CNC Competition Ported runners with a premium high- resolution finish for ultimate performance. Cylinder heads are available fully assembled or as bare castings. Sold individually. Key Features: • 227cc intake ports and 56cc or 66cc combustion chambers • 2.080 in. stainless steel intake valves • 1.600 in. stainless steel exhaust valves • .625" thick deck • Titanium retainers • 11 degree intake valve angle • 13 degree exhaust valve angle
Not Yet Reviewed
$1,549.99
