Valves & Valvetrain Parts
![Valves & Valvetrain Parts](https://ic.carid.com/pages/replacement-valves-valvetrain-parts/valves-valvetrain-parts_collage_0.jpg)
- PRW®Sportsman™ Roller-Tip Rocker Arm (0835018)Sportsman™ Roller-Tip Rocker Arm (0835018) by PRW®. Designed utilizing the latest technology, this product by PRW features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is...Made with precision and quality in mindDesigned to meet your specific needs$155.87
- PRW®Sportsman™ Roller-Tip Rocker Arms (0835020)Sportsman™ Roller-Tip Rocker Arms (0835020) by PRW®. Designed utilizing the latest technology, this product by PRW features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is...Made with precision and quality in mindDesigned to meet your specific needs$155.87
- PRW®Sportsman™ Roller-Tip Rocker Arms (0835001)Sportsman™ Roller-Tip Rocker Arms (0835001) by PRW®. Designed utilizing the latest technology, this product by PRW features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is...Made with precision and quality in mindDesigned to meet your specific needs$155.87
- PRW®Sportsman™ Self-Align Roller-Tip Rocker Arms (0835002)Sportsman™ Self-Align Roller-Tip Rocker Arms (0835002) by PRW®. Designed utilizing the latest technology, this product by PRW features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it...Made with precision and quality in mindDesigned to meet your specific needs$158.87
- Rocker Arms Unlimited®Re-Build Rocker Arm Assembly (F55L-RA)Re-Build Rocker Arm Assembly by Rocker Arms Unlimited®. With Oiler Tubes in #3 & #6 Supports. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high...Perfect blend of leading innovations and superior workmanshipManufactured to offer high value and everlasting reliability$341.86
- Rocker Arms Unlimited®Re-Build Rocker Arm Assembly (DC260RA)Re-Build Rocker Arm Assembly by Rocker Arms Unlimited®. G62B Mechanical with Jet Valve. 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...Perfect blend of leading innovations and superior workmanshipManufactured to offer high value and everlasting reliability$269.09
- ACDelco®Exhaust Rocker Arm (W0133-2744113-ACD)Genuine GM Parts™ Exhaust Rocker Arm (W0133-2744113-ACD) 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...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$32.25
- ACDelco®Genuine GM Parts™ Exhaust Rocker Arm (12579617)Genuine GM Parts™ Exhaust Rocker Arm (12579617) 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...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$19.25
- ACDelco®Genuine GM Parts™ Intake Rocker Arm (12696105)Genuine GM Parts™ Intake Rocker Arm (12696105) 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...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$15.05
- ACDelco®Genuine GM Parts™ Rocker Arm (12693909)Genuine GM Parts™ Rocker Arm (12693909) 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$24.67
- ACDelco®Genuine GM Parts™ Rocker Arm (12654646)Genuine GM Parts™ Rocker Arm (12654646) 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$6.47
- ACDelco®Rocker Arm (W0133-2131090-ACD)Genuine GM Parts™ Rocker Arm (W0133-2131090-ACD) 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...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$35.32
- Mopar®Exhaust Rocker Arm (68245463AA)Exhaust Rocker Arm (68245463AA) 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®Intake Front Rocker Arm (MD167981)Intake Front Rocker Arm (MD167981) 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$26.85
- Mopar®Lower Rocker Arm (68088240AA)Lower Rocker Arm (68088240AA) 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$44.54
- Mopar®Rocker Arm (68623674AA)Rocker Arm (68623674AA) 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$30.12
- Mopar®Rocker Arm (05048711AA)Rocker Arm (05048711AA) 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$16.04
- Mopar®Rocker Arm (68272236AA)Rocker Arm (68272236AA) 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$32.78
- Mopar®Rocker Arm (05066780AB)Rocker 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$95.84
- Mopar®Rocker Arm (68147405AA)Rocker Arm (68147405AA) 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$32.83
- Genuine®Front Inner Rocker Arm (14613-RDV-J00)Front Inner Rocker Arm (14613-RDV-J00) 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$66.64
- Genuine®Front Outer Rocker Arm (14615-RDV-J00)Front Outer Rocker Arm (14615-RDV-J00) 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$66.64
- Melling®Rocker Arm (MR-1339)Rocker Arm by Melling®. Melling lists rocker arms for both domestic and import applications. Depending on OEM design specifications, Melling rocker arms are provided in either stamped or cast materials. Each rocker arm is built from...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$4.92
- Melling®Rocker Arm (498504)Rocker Arm (498504) by Melling®. Melling lists rocker arms for both domestic and import applications. Depending on OEM design specifications, Melling rocker arms are provided in either stamped or cast materials. Each rocker arm is built...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$22.27
- ITM Engine®Exhaust Rocker Arm (056-6088)Exhaust Rocker Arm (056-6088) 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...Designed with innovative manufacturing techniquesMade with maximum safety and reliability in mind$29.35
- ITM Engine®Exhaust Rocker Arm (056-6224)Exhaust Rocker Arm (056-6224) 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...Designed with innovative manufacturing techniquesMade with maximum safety and reliability in mind$26.72
- ITM Engine®Front Intake Rocker Arm (056-6155)Front Intake Rocker Arm (056-6155) 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...Designed with innovative manufacturing techniquesMade with maximum safety and reliability in mind$52.79
- ITM Engine®Intake Rocker Arm (056-6023)Intake Rocker Arm (056-6023) 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...Designed with innovative manufacturing techniquesMade with maximum safety and reliability in mind$18.04
- ITM Engine®Intake Rocker Arm (056-6118)Intake Rocker Arm (056-6118) 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...Designed with innovative manufacturing techniquesMade with maximum safety and reliability in mind$13.58
- ITM Engine®Intake Rocker Arm (056-6008)Intake Rocker Arm (056-6008) 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...Designed with innovative manufacturing techniquesMade with maximum safety and reliability in mind$11.26
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.
Browse by Part Name
Featured Brands
Related Categories
Engine Assemblies
Motor Mounts
Engine Blocks
Pistons, Rings & Connecting Rods
Oil Filters
Serpentine Belts & Auxiliary Drive Belts
Valve Covers
Timing Gears, Chains & Covers
Engine Oil Pans, Drain Plugs & Dipsticks
Cylinder Heads
Timing Belts
Engine Pulleys
Engine Sensors, Relays, Switches & Connectors
Oil Pumps
Drive Belt Tensioners
Oil Coolers
Camshafts
Crankshafts
Engine Management Systems
Engine Bearings
Harmonic Balancers
Engine Rebuild Kits
Oil Catch Cans
Balance Shafts
Engine Swap Kits
Engine Wiring Harnesses
Intercoolers
Throttle Bodies
Carburetors
Motor Oils