ACL Main Bearing Race Series Standard Size with Extra Oil Clearance Sets Nissan 350Z VQ35DE 2003-2006 | 4M2633HX-STD

ACL is the go - to choice for engine builders, renowned for its outstanding quality and consistency. As an Original Equipment supplier, you'll find ACL bearings in numerous cars on the road. Many racers, especially import racers, rely on both their stock and performance series crankshaft rod and main bearings. ACL premium bearings outlast OEM ones, and their special coating helps prevent early engine bearing failures and costly engine damage. ACL Race Series performance bearings are built for extreme endurance in harsh conditions. With ACL's top - notch metallurgy, you don't need to worry about fatigue, stress wear, or failure when running high RPMs and big boost. When ordering bearings, remember that engine bearings need proper tolerance measurement before purchase. If you're unsure about the size your engine needs, consult a professional engine builder. We can't accept returns or exchanges for incorrectly ordered bearings or any engine internal components. ALC's main bearings are made of soft metal to protect your crank and engine block. A thin oil layer lubricates the bearing - crank connection, allowing the crank to 'float' and reduce wear. Main bearings are essential for preventing oscillations and wear that can damage the crankshaft and other components as the engine goes out of balance. Bearings with extra oil clearance can handle higher - horsepower motors better but may experience more wear during startup. These are recommended for experienced professionals only.

How to use: Install these ACL main bearings following the instructions from a professional engine builder. Make sure the engine is off and cooled down before installation. Check the bearings for any visible damage before putting them in. Precautions: Before buying, have the proper tolerance of your engine measured. If you're not sure about the right size, ask a professional. We don't accept returns or exchanges for wrong - sized bearings. Maintenance advice: Regularly check the oil level and quality in your engine. If you notice any strange noises or performance issues, have the bearings inspected. For bearings with extra oil clearance, be aware that they may wear more during startup. These are best used by experienced professionals who can monitor and manage the engine's performance effectively.