Valves & Valvetrain Parts
- Manley®Race Master™ Bead Loc Groove Engine ValveRace Master™ Bead Loc Groove Engine Valve by Manley®. 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...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$25.47 - $224.58
- Manley®Race Master™ Engine ValveRace Master™ Engine Valve by Manley®. 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 deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$25.73 - $257.24
- Manley®Race Master™ Triple Groove Engine ValveRace Master™ Triple Groove Engine Valve by Manley®. 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...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$26.24 - $210.03
- Manley®Sport Compact Race Series™ ValvesSport Compact Race Series™ Valves by Manley®. Race Master, and the Pro Flo versions identified as Race Flo valves, are manufactured of XH-426 material for the exhausts and NK-842 for the intakes. This series of valves is targeted at...XH-426 Stainless Exhaust MaterialNK-842 Stainless Intake Material$25.65 - $781.15
- Nakamura®Engine ValveEngine Valve by Nakamura®. Is your vehicle feeling down on power? Do you see dark puddles on the ground when you park? Is your CHECK ENGINE light on? Your engine may be in need of repair, but before you waste your time and gas running...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$5.03 - $26.84
- Osvat®Engine ValveEngine Valve by Osvat®. Is your vehicle feeling down on power? Do you see dark puddles on the ground when you park? Is your CHECK ENGINE light on? Your engine may be in need of repair, but before you waste your time and gas running out...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$6.15 - $19.24
- ACDelco®GM Original Equipment™ Valve LifterGM Original Equipment™ Valve Lifter by ACDelco®. Designed utilizing the latest technology, this GM Original Equipment Valve Lifter by ACDelco features premium quality and will perform better than advertised. Perfect for your vehicle...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$10.60 - $59.08
- ACDelco®Genuine GM Parts™ Engine Valve SpringGenuine GM Parts™ Engine Valve Spring by ACDelco®. Designed utilizing the latest technology, this Camshaft Position Sensor Interrupter by ACDelco features premium quality and will perform better than advertised. Perfect for your...OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price$0.36 - $34.63
- ACDelco®Genuine GM Parts™ Engine Valve Spring RetainerGenuine GM Parts™ Engine Valve Spring Retainer by ACDelco®. Designed utilizing the latest technology, this Camshaft Position Sensor Interrupter by ACDelco features premium quality and will perform better than advertised. Perfect for...OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price$1.33 - $31.13
- Mopar®Rocker ArmRocker Arm by Mopar®. Want your prized possession to look and perform the way it was designed to? Then top-of-the-line Mopar automotive parts and accessories are for you. Made using the latest manufacturing technology to meet the...Ideal solution to keep your vehicle in top shapeCrafted from premium-grade materials and the latest technology$2.28 - $676.39
- Mahle®Valve Stem Oil SealValve Stem Oil Seal by Mahle®. Increasing torque and performance with decreasing consumption and emissions. The development goals in engine construction determine the requirements of modern gasket systems. As a leader in technology, an...OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price$2.10 - $74.96
- Brian Crower®Valve Spring & Retainer KitValve Spring & Retainer Kit by Brian Crower®. Designed for high RPM, BC valve springs by PAC Racing are wound from only the highest grade, super clean, chrome silicone alloy and feature proprietary processing procedures for consistent...Designed to maximize horsepower and torque of your vehicleMade with meticulous attention to detail and unmatched craftsmanship$169.53 - $788.27
- ACDelco®Genuine GM Parts™ Engine Valve Spring Retainer KeeperGenuine GM Parts™ Engine Valve Spring Retainer Keeper by ACDelco®. Designed utilizing the latest technology, this Camshaft Position Sensor Interrupter by ACDelco features premium quality and will perform better than advertised....OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price$1.41 - $41.67
- Genuine®Valve Spring Retainer KeeperValve Spring Retainer Keeper by Genuine®. If your engine parts is in need of repair, don’t compromise the performance and safety of your car with suspect, off-brand replacement parts from the local auto parts chain store. On our...Made with precision and quality in mindDesigned to meet your specific needs$0.74 - $40.33
- ACDelco®GM Original Equipment™ Valve Lifter Oil ManifoldGM Original Equipment™ Valve Lifter Oil Manifold by ACDelco®. Designed utilizing the latest technology, this product features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is...Dictates the operation of your vehicle's vital systems, which is critical to the performance of your vehicleGM-recommended replacement part for your GM vehicle's original factory component$97.40 - $296.47
- ACDelco®Genuine GM Parts™ Valve Lifter GuideGenuine GM Parts™ Valve Lifter Guide by ACDelco®. 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...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$2.05 - $34.70
- Mopar®Valve LifterValve Lifter by Mopar®. Want your prized possession to look and perform the way it was designed to? Then top-of-the-line Mopar automotive parts and accessories are for you. Made using the latest manufacturing technology to meet the...Ideal solution to keep your vehicle in top shapeCrafted from premium-grade materials and the latest technology$2.59 - $230.47
- Mopar®Valve Stem Oil SealValve Stem Oil Seal by Mopar®. Want your prized possession to look and perform the way it was designed to? Then top-of-the-line Mopar automotive parts and accessories are for you. Made using the latest manufacturing technology to meet...Ideal solution to keep your vehicle in top shapeCrafted from premium-grade materials and the latest technology$1.09 - $27.17
- Fel-Pro®Valve Stem Oil SealValve Stem Oil Seal by Fel-Pro®. If you need durable gaskets to prevent leaks on your vehicle, Fel-Pro is the way to go. Engineered using the latest technologies and global engineering resources, the gaskets meet specific OEM needs and...Direct OEM replacement for a proper fitEnsures reliable sealing performance$0.50 - $141.63
- Mahle®Camshaft FollowerCamshaft Follower by Mahle®. 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$7.08 - $300.15
- Mahle®Valve LiftersValve Lifters by Mahle®. For the engine builder that chooses a solid lifter cam, MAHLE engine parts offer the highest quality mechanical lifters found in the market today. These lifters are engineered to withstand the severe stresses...OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price$7.08 - $126.11
- Sealed Power®Valve LifterValve Lifter by Sealed Power®. Designed utilizing the latest technology, this product by Sealed Power features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is manufactured to meet...OE replacementHigh strength steel retainer (precisely limits plunger travel to perform at rpm operation)$4.06 - $182.11
- Enginetech®Replacement Engine Valve Stem Oil SealReplacement Engine Valve Stem Oil Seal by Enginetech®. 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...Made with precision and quality in mindDesigned to meet your specific needs$0.86 - $62.89
- Enginetech®Valve SpringsValve Springs by Enginetech®. 4 Pieces. The Engine Builder's Source, can locate the right part for nearly any rebuild application. Offering a full line of internal engine parts for domestic, import and high performance applications,...Rigorously tested to withstand years of abuseDesigned with innovative manufacturing techniques$4.80 - $30.03
- Pioneer Automotive®Engine Valve Stem Seal SetEngine Valve Stem Seal 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...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$32.21
- DNJ Engine Components®Valve LifterValve Lifter 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$5.95 - $134.77
- COMP Cams®Beehive™ Valve SpringBeehive™ Valve Spring by COMP Cams®. Beehive Valve Springs were designed for hydraulic or solid flat tappet as well as hydraulic roller cams. COMP Cams Beehive Valve Springs deliver increased valve train stability and a much lighter...The unique Beehive shape handles valve train stress more efficiently to eliminate damaging harmonicsIncreases high RPM horsepower and durability$13.95 - $783.95
- COMP Cams®Hi-Tech™ Push RodHi-Tech™ Push Rod by COMP Cams®. This high-grade product was designed with craftsmanship and key attention to detail and manufactured using leading-edge innovations by experienced and knowledgeable engineering staff. It ensures...Developed to provide steady performance and reliabilityMade using up-to-date equipment and new technologies$14.11 - $324.95
- COMP Cams®High Energy™ Push RodHigh Energy™ Push Rod by COMP Cams®. 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...Developed to provide steady performance and reliabilityMade using up-to-date equipment and new technologies$7.95 - $239.95
- COMP Cams®High Energy™ Rocker ArmHigh Energy™ Rocker Arm by COMP Cams®. This high-grade product was designed with craftsmanship and key attention to detail and manufactured using leading-edge innovations by experienced and knowledgeable engineering staff. It ensures...Developed to provide steady performance and reliabilityMade using up-to-date equipment and new technologies$15.95 - $257.95
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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