【Fits】 Please check compatibility to make sure this part fits for your vehicle before purchase. This part is compatible with LS1/LS2/LS6/ LR4 Vortec 5300 LM7 L59 LM4 L33-4.8/5.3/5.7/6.0/ Engines for Allure/ LaCrosse/Rainier, Cadillac Escalade/CTS/XLR, Chevy Avalanche/Camaro/Express/Silverado/Suburban/Tahoe/SS/SSR, GMC Canyon/Envoy/Savana/Sierra/Yukon, Pontiac Firebird/Grand Prix/GTO, Hum mer H2/H3 & more vehicles.
【Rocker arms】 Rocker arms are typically located between the pushrod and intake and exhaust valves. They are pushed and pulled by pushrods to “rock” up and down, opening and closing the exhaust valve and intake valve of the combustion chamber on engines with a camshaft below the engine. Pushrods move up and down as the camshaft below them rotates, driven by the crankshaft. Then power can flow from the combustion chamber of engine through various parts to the wheels to put the vehicle in motion.
【Rocker arms】 With broken or loose rocker arms, the exhaust valves and intake valves can’t function correctly and the cylinder associated with the faulty rocker arm will be disabled. This will ultimately limit the performance of your engine and your ability to drive the car smoothly and safely.
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