Valves & Valvetrain Parts
- Genuine®Rocker ArmRocker Arm 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$20.77 - $829.98
- Genuine®Rocker Arm ShaftRocker Arm Shaft 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$168.79 - $179.85
- Genuine®Rocker Shaft Spring ClipRocker Shaft Spring Clip 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...Made with precision and quality in mindDesigned to meet your specific needs$1.45 - $1.88
- Genuine®Valve Adjuster ShimValve Adjuster Shim 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 website...Designed to restore your vehicle’s engine partsGenuine OE replacement parts from the OE manufacturer$3.71 - $59.73
- Genuine®Valve GuideValve Guide 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$12.07 - $88.84
- Genuine®Valve LifterValve Lifter 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$12.81 - $314.35
- Genuine®Valve Lifter GuideValve Lifter Guide 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 website...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$19.68
- 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
- Genuine®Valve Spring RetainerValve Spring Retainer 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$2.47 - $43.74
- Genuine®Valve Stem SealValve Stem Seal 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$0.64 - $38.51
- Mahle®Valve GuideValve Guide by Mahle®. 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$6.22 - $7.29
- SKP®Engine Valve Cover GasketEngine Valve Cover Gasket by SKP®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver great quality...Precise engineering ensures second to none quality and lasting valueStringently tested with the highest quality standards$5.24 - $317.43
- Sealed Power®Engine Push RodEngine Push Rod by Sealed Power®. 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...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$2.41 - $10.78
- Sealed Power®Rocker ArmRocker Arm 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 or...Direct replacementManufactured to strict engineering quality standards$6.50 - $13.66
- Sealed Power®Rocker Arm BallRocker Arm Ball 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...Direct replacementManufactured to strict engineering quality standards$0.89 - $1.13
- Sealed Power®Valve GuideValve Guide 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 or...Direct replacementManufactured to strict engineering quality standards$3.64 - $3.77
- Sealed Power®Valve SpringValve Spring 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...Direct replacementManufactured to strict engineering quality standards$3.13 - $11.64
- Sealed Power®Valve Spring Retainer KeeperValve Spring Retainer Keeper 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...Direct replacementManufactured to strict engineering quality standards$0.26 - $1.86
- Apex Auto®Engine Valve Stem Seal SetEngine Valve Stem Seal Set by Apex Auto®. Apex products, at present, cover the engine gaskets, seals and head bolts for full coverage of Domestic, Japanese, Korean and popular Eurpoean applications, and are manufactured to meet or...Made with precision and quality in mindDesigned to meet your specific needs$6.25 - $55.25
- Enginetech®Engine Valve LifterEngine Valve Lifter by Enginetech®. Enginetech Lifters are made to OEM quality and specifications. Enginetech believes one of the most crucial parts of an engine. Enginetech assure that a factory spec. lifter is used and only use...Rigorously tested to withstand years of abuseDesigned with innovative manufacturing techniques$12.52 - $634.89
- Enginetech®Premium Positive Valve SealsPremium Positive Valve Seals by Enginetech®. Enginetech Premium Positive seals are metal clad with high-temp Viton® elastomer sealing lips. All Premium Positive seals are designed to work with valve stems from 0.005” under to...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$7.60 - $16.33
- Enginetech®Premium Umbrella Valve SealsPremium Umbrella Valve Seals by Enginetech®. Premium Umbrella seals are high-temp Silicone with garter springs to retain stem interference. All Premium Umbrella seals are designed to work with valve stems from 0.005” under to...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$8.24 - $10.75
- Enginetech®Push RodsPush Rods by Enginetech®. Another introduction to the Enginetech product offering is valve train components. Due to popular request and demand from customers, Enginetech have added a line of valve train components such as valve springs,...Rigorously tested to withstand years of abuseDesigned with innovative manufacturing techniques$4.65 - $200.78
- 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 - $141.02
- Enginetech®Rocker Arm BallRocker Arm Ball 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$31.01
- Enginetech®Valve GuidesValve Guides 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$3.44 - $153.30
- Enginetech®Valve Lifter GuideValve Lifter Guide 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...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$8.15 - $10.44
- 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$5.23 - $77.60
- Beck Arnley®Push Rod Tube SealPush Rod Tube Seal by Beck Arnley®. When investing in this superior product by Beck Arnley, expect to get the exact OEM look, function, and fit. The product was developed to stringent factory specifications and crafted using...OE quality products from top original equipmentTop quality materials$1.40 - $4.78
- 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
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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