Valves & Valvetrain Parts
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- 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 - $19.93
- TRW®Engine ValveEngine Valve by TRW®. 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 to...OE quality fluids from top original equipment and aftermarket manufacturersThe finest quality at a great price$7.70 - $134.70
- 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
- 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)$5.56 - $182.11
- 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$77.02 - $287.60
- 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 - $771.23
- Mopar®Rocker Arm ShaftRocker Arm Shaft 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$1.79 - $190.02
- 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$5.98 - $54.09
- ACDelco®Genuine GM Parts™ Valve LifterGenuine GM Parts™ Valve Lifter by ACDelco®. GM Genuine valve lifters automatically help maintain a ‘zero’ valve lash condition to help prevent valvetrain noise and unnecessary valvetrain component wear, and are...Adjusts the valves on your vehicle’s engine for proper performanceOffers the quality, reliability, and durability of GM OE$2.96 - $32.17
- 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$1.69 - $29.18
- ACDelco®Genuine GM Parts™ Valve Stem Oil SealGenuine GM Parts™ Valve Stem Oil Seal 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$1.25 - $43.63
- Mopar®Push RodPush Rod 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 highest...Ideal solution to keep your vehicle in top shapeCrafted from premium-grade materials and the latest technology$1.17 - $4,598.16
- Mopar®Valve SpringValve Spring 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$1.50 - $327.55
- Mopar®Valve Spring RetainerValve Spring Retainer 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$0.39 - $19.45
- Mopar®Valve Spring Retainer KeeperValve Spring Retainer Keeper 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...Ideal solution to keep your vehicle in top shapeCrafted from premium-grade materials and the latest technology$0.49 - $8.11
- Genuine®Valve SpringValve Spring by Genuine®. Genuine is here to give you the ultimate in quality and reliability at a cost you can afford. Designed utilizing the latest technologies and manufactured from premium materials using state-of-the-art...Made with precision and quality in mindDesigned to meet your specific needs$7.40 - $174.58
- Enginetech®Rocker ArmRocker Arm by Enginetech®. 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, Enginetech...Rigorously tested to withstand years of abuseDesigned with innovative manufacturing techniques$3.19 - $143.25
- Enginetech®Valve SeatsValve Seats 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 provide a perfect fit for a...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$5.36 - $77.60
- COMP Cams®Ultra Pro Magnum™ Rocker ArmUltra Pro Magnum™ Rocker Arm 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...Investment cast 8650 chromemoly body and arched, web-like design deliver increased strength and rigidity while still reducing the moment of inertia. Unique black oxide exterior finish helps prevent corrosion and increases durability.Optimized retainer and valve spring clearances allow for use of most diameter springs, retainers and +.050" locks without clearance or fitment issues.$42.95 - $777.95
- COMP Cams®Valve SpringValve Spring by COMP Cams®. Designed utilizing the latest technology, this product by COMP Cams features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is manufactured to meet or...High quality at an affordable priceExpertly made from premium materials$11.95 - $1,236.95
- QualCast®Valve GuideValve Guide by QualCast®. 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 for a...Made from high-strength materials for uncompromising durabilityDesigned to provide an excellent combination of price and quality$2.03 - $9.67
- QualCast®Valve Spring Retainer KeeperValve Spring Retainer Keeper by QualCast®. Beads: 1. QualCast Premium Materials are stamped or machined to exacting tolerances. For extra long life, QualCast finishes include zinc (with green or yellow flash coating), copper, and black...Made from high-strength materials for uncompromising durabilityDesigned to provide an excellent combination of price and quality$0.97 - $4.07
- Stone®Engine Valve Stem Oil SealEngine Valve Stem Oil Seal by Stone®. 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...Expertly crafted from the highest grade materialsCompliant with the most strict standards for quality$0.32 - $1.29
- Livernois Motorsports®Powerstorm™ Hardened PushrodPowerstorm™ Hardened Pushrod by Livernois Motorsports®. 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...One-piece constructionDie formed ends$7.99 - $134.99
- ACDelco®GM Genuine Parts Engine Valve LifterGM Genuine Parts Engine Valve Lifter by ACDelco®. ACDelco GM Original Equipment Engine Valve Lifters automatically help maintain a 'zero' valve lash condition to help prevent valve train noise and unnecessary valve train component wear,...Adjusts the valves on your vehicle's engine for proper performanceGM-recommended replacement part for your GM vehicle's original factory component$16.25 - $53.22
- ACDelco®GM Original Equipment™ Valve Lifter GuideGM Original Equipment™ Valve Lifter Guide by ACDelco®. Designed utilizing the latest technology, this Valve Lifter Guide 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$8.37 - $16.53
- ACDelco®Genuine GM Parts™ Engine Valve SeatGenuine GM Parts™ Engine Valve Seat 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$1.01 - $45.37
- 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$0.43 - $31.06
- 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$1.34 - $26.71
- 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$1.07 - $42.62
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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