King Engine Bearings Toyota 3K/4K/(Size +0.50mm) Main Bearing Set

King Engine Bearings is well-known for making solid engine components, and this main bearing set is a great example of their work for your 1968-1979 Toyota Corolla. If you're rebuilding the bottom end of your 3K or 4K engine, these bearings are a crucial part of ensuring smooth operation and longevity. They are designed to handle the stresses of the crankshaft rotating within the engine block.

These main bearings are constructed with a bimetal design, meaning they have an aluminum base. This type of construction offers good wear resistance and conformability, which helps them adapt to the crankshaft surface for better oil distribution. This set is specifically sized at 0.50mm undersize, which is important to note if you are machining your crankshaft to match.