Valves & Valvetrain Parts
- Original Equipment®Valve AdjusterValve Adjuster by Original Equipment®. Looking for high-quality replacement parts to restore the performance of your vehicle? Then Original Equipment automotive parts are for you. They are manufactured from the finest materials...Perfect replacement for your damaged or worn out original partMade using high-grade materials for long-lasting dependability$38.40
- Original Equipment®Valve SeatValve Seat by Original Equipment®. Looking for high-quality replacement parts to restore the performance of your vehicle? Then Original Equipment automotive parts are for you. They are manufactured from the finest materials according to...Perfect replacement for your damaged or worn out original partMade using high-grade materials for long-lasting dependability$22.14 - $60.83
- Original Equipment®Valve SpringValve Spring by Original Equipment®. Looking for high-quality replacement parts to restore the performance of your vehicle? Then Original Equipment automotive parts are for you. They are manufactured from the finest materials according...Perfect replacement for your damaged or worn out original partMade using high-grade materials for long-lasting dependability$10.31 - $30.16
- Original Equipment®Valve Spring ShimValve Spring Shim by Original Equipment®. Looking for high-quality replacement parts to restore the performance of your vehicle? Then Original Equipment automotive parts are for you. They are manufactured from the finest materials...Perfect replacement for your damaged or worn out original partMade using high-grade materials for long-lasting dependability$1.77
- Original Equipment®Valve Stem Oil SealValve Stem Oil Seal by Original Equipment®. Looking for high-quality replacement parts to restore the performance of your vehicle? Then Original Equipment automotive parts are for you. They are manufactured from the finest materials...Perfect replacement for your damaged or worn out original partMade using high-grade materials for long-lasting dependability$2.58 - $3.08
- Elring®Valve Stem SealValve Stem Seal by Elring®. Dynamic seals round off the product range. Elring can supply many different types of oil seals and valve stem seal in a variety of materials and sizes. For engines, gearboxes and axles - and of course to top...OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price$0.44 - $40.13
- Pioneer Automotive®Engine Push Rod Guide PlateEngine Push Rod Guide Plate by Pioneer Automotive®. Designed utilizing the latest technology, this product by Pioneer Automotive features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle,...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$20.74 - $75.12
- Pioneer Automotive®Engine Push Rod SetEngine Push Rod Set by Pioneer Automotive®. Designed utilizing the latest technology, this product by Pioneer Automotive features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$4.31 - $52.58
- Pioneer Automotive®Engine Rocker Arm BallEngine Rocker Arm Ball by Pioneer Automotive®. Designed utilizing the latest technology, this product by Pioneer Automotive features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$7.28 - $24.97
- Pioneer Automotive®Engine Rocker Arm KitEngine Rocker Arm Kit by Pioneer Automotive®. Designed utilizing the latest technology, this product by Pioneer Automotive features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$7.05 - $70.02
- Pioneer Automotive®Engine Rocker Arm NutEngine Rocker Arm Nut by Pioneer Automotive®. Designed utilizing the latest technology, this product by Pioneer Automotive features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$41.22 - $50.80
- Pioneer Automotive®Engine Rocker Arm StudEngine Rocker Arm Stud by Pioneer Automotive®. Designed utilizing the latest technology, this product by Pioneer Automotive features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$9.61 - $92.85
- Pioneer Automotive®Engine Valve Spring KitEngine Valve Spring Kit by Pioneer Automotive®. Size: 1.500 x 0.645 x 0.060. During that time, Pioneer Automotive® has been leading supplier of OEM (Original Equipment Manufacturer) quality level component parts to re-manufacturers...Made to deliver reliable service for a long timeRugged construction to withstand harsh conditions$13.81 - $123.22
- Pioneer Automotive®Engine Valve Spring Retainer Keeper KitEngine Valve Spring Retainer Keeper Kit by Pioneer Automotive®. Designed utilizing the latest technology, this product by Pioneer Automotive features premium quality and will perform better than advertised. Perfect for your vehicle and...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$6.32 - $69.16
- Pioneer Automotive®Engine Valve Spring Retainer SetEngine Valve Spring Retainer Set by Pioneer Automotive®. Designed utilizing the latest technology, this product by Pioneer Automotive features premium quality and will perform better than advertised. Perfect for your vehicle and...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$71.68 - $128.98
- Pioneer Automotive®Valve Spring Insert KitValve Spring Insert Kit by Pioneer Automotive®. Designed utilizing the latest technology, this product by Pioneer Automotive features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$13.81 - $16.08
- ITM Engine®Rocker ArmRocker Arm by ITM Engine®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from industry-leading materials...Designed with innovative manufacturing techniquesMade with maximum safety and reliability in mind$6.57 - $52.79
- ITM Engine®Valve SpringValve Spring by ITM Engine®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from industry-leading...Designed with innovative manufacturing techniquesMade with maximum safety and reliability in mind$15.80
- ITM Engine®Valve Stem Oil Seal SetValve Stem Oil Seal Set by ITM Engine®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from...Designed with innovative manufacturing techniquesMade with maximum safety and reliability in mind$3.29
- Victor Reinz®Push Rod Tube SealPush Rod Tube Seal by Victor Reinz®. This product is made of high-quality components to meet and exceed strict quality requirements. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and...Made with precision and quality in mindDesigned to meet your specific needs$1.07 - $2.56
- Victor Reinz®Valve Spring AbsorberValve Spring Absorber by Victor Reinz®. This product is made of high-quality components to meet and exceed strict quality requirements. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and...Made with precision and quality in mindDesigned to meet your specific needs$1.57
- Victor Reinz®Valve Stem Oil SealValve Stem Oil Seal by Victor Reinz®. This product is made of high-quality components to meet and exceed strict quality requirements. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and...Made with precision and quality in mindDesigned to meet your specific needs$1.95 - $68.43
- Vaico®Engine Timing Rocker ArmEngine Timing Rocker Arm by Vaico®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from industry-leading...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$12.06 - $16.30
- Vaico®Engine Valve LifterEngine Valve Lifter by Vaico®. This product is made of high-quality components to meet and exceed strict quality requirements. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver...Made with precision and quality in mindDesigned to meet your specific needs$11.44 - $36.74
- Vaico®Engine Valve Stem SealEngine Valve Stem Seal by Vaico®. This product is made of high-quality components to meet and exceed strict quality requirements. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver...Made with precision and quality in mindDesigned to meet your specific needs$10.15 - $50.18
- DNJ Engine Components®Rocker ArmRocker Arm by DNJ Engine Components®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and reliability. Designed to provide a perfect fit...Designed to replace your malfunctioning partsHelps get your vehicle back to it's original performance$8.82 - $31.34
- DNJ Engine Components®Valve GuideValve Guide by DNJ Engine Components®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and reliability. Designed to provide a perfect...Designed to replace your malfunctioning partsHelps get your vehicle back to it's original performance$1.82 - $6.93
- DNJ Engine Components®Valve Stem Oil SealValve Stem Oil Seal by DNJ Engine Components®. Get this top-grade quality replacement for your worn out part from DNJ. Expertly crafted from premium materials, this product is of the finest quality to provide you with long-term...Designed to restore your vehicle's original performanceProvides superior sealing performance$9.39 - $54.17
- COMP Cams®Elite Race™ Valve SpringElite Race™ Valve Spring by COMP Cams®. Engineered with enhanced processing for middle level fatigue resistance and designed to work with roller cams, they are widely used in Dirt or Asphalt Late Model and Sportsman racing, as well as...Developed to provide steady performance and reliabilityMade using up-to-date equipment and new technologies$60.95 - $741.95
- COMP Cams®Endure-X™ Valve LifterEndure-X™ Valve Lifter by COMP Cams®. Endure-X Solid Roller Lifters from COMP Cams are engineered to withstand the demands of aggressive cam lobe designs and increased RPM ranges, and are not designed for street use. They feature a...Removable Link Bar - COMP Cams patented link bar assembly combines the benefits of a removable link bar with the safety of a captured link barEDM Oil Injection™ Technology - guarantees that the bearing assembly receives a constant fl ow of pressurized oil via a precision hole aimed directly at the needle bearings$55.95 - $793.95
Valves allow gases to flow in and out of the cylinders, and seal the combustion chambers so compression can develop. They open and close in response to the lobes on the camshaft via the valvetrain. The air/fuel mixture flows in when the intake valve opens, and the spent exhaust gases flow out when the exhaust valve opens after the power stroke. Every engine has at least one intake and exhaust valve, while many have a pair of each.
Valvetrains differ according to camshaft location. On Over Head Valve engines the cam is in the cylinder block. On Over Head Cam engines one or two cams are on the cylinder head. On OHV engines lifters ride on the camshaft lobes, pushrods transfer motion up to the cylinder head, and rocker arms pivot on shafts or studs actuating the valves. OHC valvetrains may have pivoting rocker type followers and lash adjusters or buckets between the cam and valves.
Valvetrain problems are often caused by excessive clearance. As cam lobes, lifters/followers, pushrods, and rocker arms wear, clearance is increased. Once clearance starts to increase, the pounding experienced by each component becomes greater as the lash opens and is taken up during valve operation. This can result in bent pushrods and broken rocker arms. The most common valve failure is overheating, especially on exhaust valves, which causes the valve to “burn” and distort and/or crack.
Miles and engine heat can also take their toll on valve springs. The valve springs must have enough pressure to keep the valves closed and maintain valve lash. Seat pressure is usually 70-90 lbs. on a stock engine with open pressure at 200 lbs. or more. Weak valve springs can’t exert the proper amount of pressure, which can cause misfire and loss of power as engine speed increases, resulting in “valve float”, where the valves fail to close. In extreme cases valve float can allow the valves to contact the pistons on some engines, bending or breaking the valves and cracking or breaking the pistons.
Performance valvetrain components must be much stronger to function at high RPMs and overcome stiff valve spring pressure to open larger valves. Higher valve spring pressure is needed to prevent valve float at high RPM. Performance rocker arms and valve spring retainers are made of lighter materials to enable the engine to rev easier and achieve higher RPM, and components like roller lifters and roller rockers reduce power-robbing friction. Most performance pushrods are made of strong chrome moly steel, and larger diameter pushrods are available for some applications. No matter whether you’re looking for a stock replacement or a performance unit, we are your one-stop shop.
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