Valves & Valvetrain Parts
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- ACDelco®Genuine GM Parts™ Valve Spring (12691120)Genuine GM Parts™ Valve Spring (12691120) 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...Made with precision and quality in mindDesigned to meet your specific needs$6.08
- ACDelco®Genuine GM Parts™ Valve Spring (12686721)Genuine GM Parts™ Valve Spring (12686721) 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...Made with precision and quality in mindDesigned to meet your specific needs$6.74
- ACDelco®Genuine GM Parts™ Valve Spring (12706568)Genuine GM Parts™ Valve Spring (12706568) 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...Made with precision and quality in mindDesigned to meet your specific needs$5.66
- Mopar®Valve Spring (05096541AA)Valve 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$8.78
- Mopar®Valve Spring (04884804AA)Valve Spring (04884804AA) 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...Ideal solution to keep your vehicle in top shapeCrafted from premium-grade materials and the latest technology$3.62
- Mopar®Valve Spring (05047498AA)Valve Spring (05047498AA) 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...Ideal solution to keep your vehicle in top shapeCrafted from premium-grade materials and the latest technology$5.83
- Mopar®Valve Spring (MN137027)Valve Spring (MN137027) 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...Ideal solution to keep your vehicle in top shapeCrafted from premium-grade materials and the latest technology$5.39
- Mopar®Valve Spring (04893172AA)Valve Spring (04893172AA) 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...Ideal solution to keep your vehicle in top shapeCrafted from premium-grade materials and the latest technology$6.73
- Mopar®Valve Spring (68320099AA)Valve Spring (68320099AA) 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...Ideal solution to keep your vehicle in top shapeCrafted from premium-grade materials and the latest technology$7.62
- AMC®Inner Valve Spring (652851)Inner Valve Spring (652851) by AMC®. Restore your engine’s performance with the highest quality AMC parts that deliver a perfect fit and hassle-free operation. Carefully designed and thoroughly tested, they will cater to all your...Designed to restore the performance of your vehicle’s engineMade from high-grade materials to deliver reliability$2.38
- AMC®Outer Valve Spring (652852)Outer Valve Spring (652852) by AMC®. Restore your engine’s performance with the highest quality AMC parts that deliver a perfect fit and hassle-free operation. Carefully designed and thoroughly tested, they will cater to all your...Designed to restore the performance of your vehicle’s engineMade from high-grade materials to deliver reliability$2.90
- German®Valve SpringValve Spring by German®. Keep your vehicle working in top condition with premium parts by German. Made using innovative technologies and the highest quality materials, they deliver excellent performance and problem-free operation while...OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price$7.10 - $42.95
- SBI®Valve SpringValve Spring by SBI®. S. B. International has put together the most comprehensive and accurate Valve Spring Specifications listing available today. Each spring has been tested to provide the latest information available. In some cases...Engineered with love for enginesMade for quiet and well-coordinated work of your engine$1.20 - $10.17
- ACDelco®Genuine GM Parts™ Exhaust Valve Spring (19317154)Genuine GM Parts™ Exhaust Valve Spring (19317154) by ACDelco®. Designed utilizing the latest technology, this Camshaft Position Sensor Interrupter by ACDelco features premium quality and will perform better than advertised. Perfect...Made with precision and quality in mindDesigned to meet your specific needs$33.11
- ACDelco®Genuine GM Parts™ Intake Valve Spring (19316205)Genuine GM Parts™ Intake Valve Spring (19316205) 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...Made with precision and quality in mindDesigned to meet your specific needs$32.65
- ACDelco®Genuine GM Parts™ Intake Valve Spring (19318158)Genuine GM Parts™ Intake Valve Spring (19318158) 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...Made with precision and quality in mindDesigned to meet your specific needs$14.17
- ACDelco®Genuine GM Parts™ Valve Spring (12668540)Genuine GM Parts™ 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 vehicle and...Made with precision and quality in mindDesigned to meet your specific needs$8.17
- ACDelco®Genuine GM Parts™ Valve Spring (19257200)Genuine GM Parts™ Valve Spring (19257200) 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...Made with precision and quality in mindDesigned to meet your specific needs$12.60
- ACDelco®Genuine GM Parts™ Valve Spring (55573912)Genuine GM Parts™ Valve Spring (55573912) 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...Made with precision and quality in mindDesigned to meet your specific needs$5.60
- ACDelco®Genuine GM Parts™ Valve Spring (96990215)Genuine GM Parts™ 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 vehicle and...Made with precision and quality in mindDesigned to meet your specific needs$1.83
- Mopar®Exhaust Valve Spring (53021795AA)Exhaust Valve Spring (53021795AA) 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...Ideal solution to keep your vehicle in top shapeCrafted from premium-grade materials and the latest technology$10.60
- Mopar®Exhaust Valve Spring (53021790AA)Exhaust Valve Spring (53021790AA) 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...Ideal solution to keep your vehicle in top shapeCrafted from premium-grade materials and the latest technology$3.43
- Mopar®Intake Valve Spring (53021775AA)Intake Valve Spring (53021775AA) 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...Ideal solution to keep your vehicle in top shapeCrafted from premium-grade materials and the latest technology$4.02
- Mopar®Intake Valve Spring (P5160074)Intake Valve Spring (P5160074) 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...Ideal solution to keep your vehicle in top shapeCrafted from premium-grade materials and the latest technology$281.64
- Mopar®Intake Valve Spring (P4510854)Intake Valve Spring (P4510854) 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...Ideal solution to keep your vehicle in top shapeCrafted from premium-grade materials and the latest technology$327.55
- Mopar®Intake Valve Spring (05037382AD)Intake Valve Spring (05037382AD) 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...Ideal solution to keep your vehicle in top shapeCrafted from premium-grade materials and the latest technology$17.31
- Mopar®Valve Spring (53021288AC)Valve Spring (53021288AC) 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...Ideal solution to keep your vehicle in top shapeCrafted from premium-grade materials and the latest technology$4.20
- Mopar®Valve Spring (53021580AB)Valve Spring (53021580AB) 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...Ideal solution to keep your vehicle in top shapeCrafted from premium-grade materials and the latest technology$2.95
- Mopar®Valve Spring (04893773AB)Valve Spring (04893773AB) 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...Ideal solution to keep your vehicle in top shapeCrafted from premium-grade materials and the latest technology$7.83
- Mopar®Valve Spring (04893686AA)Valve Spring (04893686AA) 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...Ideal solution to keep your vehicle in top shapeCrafted from premium-grade materials and the latest technology$7.83
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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