ACL Main Bearing Race Series 0.25mm Oversized Sets Nissan 350Z VQ35DE 2003-2006 | 4M2633H-.25

ACL is the go - to choice for engine builders due to its top - notch quality and consistency. As an Original Equipment supplier, you'll spot ACL bearings in numerous cars on the road. Many racers, especially those into import racing, trust both their stock and performance series crankshaft rod and main bearings. ACL premium bearings outlast OEM ones and their special coating guards against early engine bearing failures and costly engine damage. ACL Race Series performance bearings are built for extreme endurance in tough conditions. With ACL's top - grade metallurgy, you can run high RPMs and big boost without fretting about fatigue, stress wear, or failure. When ordering bearings, remember to measure proper tolerance before buying. If unsure about the size your engine needs, consult a professional. We don't accept returns or exchanges for incorrectly ordered engine internal components. ALC's main bearings are crafted from softer metal to protect your crank and engine block. A thin oil layer lubricates the bearing - crank connection, letting the crank 'float' and reducing wear. Adequate support from main bearings is vital to prevent oscillations and wear that can harm the crankshaft and other parts as the motor gets unbalanced. Bearings with extra oil clearance handle high - horsepower motors better but wear more during startup, so they're best for experienced pros.

Using these ACL main bearing race series sets is straightforward. First, make sure to measure the proper tolerance of your engine before purchasing to get the right size. If you're not sure, ask a professional engine builder. Once you have the correct bearings, install them following standard engine assembly procedures. When your engine is running, these bearings will work to support the crankshaft and reduce wear. Just keep in mind that bearings with extra oil clearance can handle high - horsepower motors well, but they'll wear more during startup. For maintenance, regularly check your engine oil levels and quality. The oil is what lubricates the bearings and helps the crank 'float'. Replace the oil as recommended by your vehicle's manual. And always keep an eye on your engine's performance. If you notice any strange noises or changes, it might be a sign that the bearings need to be inspected. Also, remember that we don't accept returns or exchanges for incorrectly ordered engine internal components, so double - check your order details.