Valves & Valvetrain Parts
- ACDelco®Genuine GM Parts™ Engine ValveGenuine GM Parts™ Engine Valve 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 needs...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$2.35 - $120.54
- Mopar®Engine ValveEngine Valve 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$2.90 - $281.14
- SKP®Engine ValveEngine Valve by SKP®. 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 to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$3.25 - $74.62
- DNJ Engine Components®Engine ValveEngine Valve by DNJ Engine Components®. Save your time and hassle when replacing your worn out or cracked valve with this superior part expertly crafted by DNJ. Designed to meet or exceed the highest OE standards, the top-notch valve...Designed to replace your worn out or cracked valveLooks, fits and performs just like your OE part$5.47 - $35.88
- Genuine®Engine ValveEngine Valve 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$4.04 - $143.04
- Mahle®Engine ValvesEngine Valves 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...OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price$5.60 - $41.23
- Sealed Power®Engine ValveEngine Valve by Sealed Power®. Featuring leading-edge design, premium materials and precision engineering, Sealed Power valves are recognized for superior durability and fatigue resistance that can meet the demands of any application....Unsurpassed engineering, manufacturing and materials selectionHigh fatigue strength$7.49 - $16.03
- Original Equipment®Engine ValveEngine Valve 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$7.57 - $99.93
- Crown®Engine ValveEngine Valve by Crown®. Crown Automotive is just the ticket if you want to get the most out of your vehicle as well as revel in a more exciting driving experience. You will surely get a real bang for the buck!Developed to improve your driving experienceConstructed to ensure ultimate operation$16.40 - $44.34
- Professional Parts Sweden®Engine ValveEngine Valve by Professional Parts Sweden®. If you need premium-quality yet affordable replacement parts for your Volvo or SAAB, Professional Parts Sweden hits the spot. Top-of-the-line Professional Parts Sweden products are made using...Direct replacement for your factory partEngineered to meet exact OEM standards$8.83 - $20.82
- Febi®Engine ValveEngine Valve by Febi®. 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 to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$12.46 - $32.67
- Aisan®Engine ValveEngine Valve by Aisan®. Make sure your engine breathes properly with our selection of top-quality replacement parts. These parts are made by trusted brands that use the finest materials and the latest manufacturing techniques. As a...Perfect solution to keep your system performing the way it was designed toCrafted from the highest grade materials for dependable, long-lasting service$7.15 - $18.01
- CRP®Engine ValveEngine Valve by CRP®. 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 to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$9.08 - $41.39
- Eurospare®Engine ValveEngine Valve by Eurospare®. 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$10.25 - $24.02
- AE®Engine ValveEngine Valve by AE®. 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 using...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$4.92 - $52.01
- Dokuro®Engine ValveEngine Valve by Dokuro®. Dokuro offers valves in a variety of materials to meet the requirements virtually any engine. The materials available for Dokuro valve applications include carbon steel alloys, stainless steels, inconel, and...OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price$4.06 - $41.98
- Kolbenschmidt®Engine ValveEngine Valve by Kolbenschmidt®. Manufactured with customers in mind using most modern methods and leading-edge equipment, this premium-grade product is excellent in every detail. It ensures impeccable quality and maximum reliability and...Unique craftsmanship paired with advanced technologyDesigned to ensure a high level of reliability and security$11.77 - $16.31
- 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 - $19.93
- 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 - $132.91
- ITM Engine®Engine ValveEngine Valve 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$3.44 - $78.72
- ACDelco®Genuine GM Parts™ Intake Valve (12555331)Genuine GM Parts™ Intake Valve (12555331) 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...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$31.43
- ACDelco®Genuine GM Parts™ Intake Valve (12569427)Genuine GM Parts™ Intake Valve (12569427) 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...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$36.99
- ACDelco®Genuine GM Parts™ Intake Valve (12556317)Genuine GM Parts™ Intake Valve (12556317) 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...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$34.08
- ACDelco®Genuine GM Parts™ Intake Valve (10244974)Genuine GM Parts™ Intake Valve (10244974) 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...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$9.26
- ACDelco®Genuine GM Parts™ Intake Valve (12591644)Genuine GM Parts™ Intake Valve (12591644) 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...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$114.62
- ACDelco®Genuine GM Parts™ Intake Valve (12605223)Genuine GM Parts™ Intake Valve (12605223) 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...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$14.43
- ACDelco®Genuine GM Parts™ Intake Valve (12620501)Genuine GM Parts™ Intake Valve (12620501) 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...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$23.96
- ACDelco®Genuine GM Parts™ Intake Valve (12619825)Genuine GM Parts™ Intake Valve (12619825) 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...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$8.28
- ACDelco®Genuine GM Parts™ Intake Valve (12623722)Genuine GM Parts™ Intake Valve (12623722) 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...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$11.97
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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