King Engine Bearings Toyota 3K/4K/(Size +0.25mm) Connecting Rod Bearing Set

These King Engine Bearings connecting rod bearings are built with a bimetal construction, using an aluminum base. This design is key for handling the loads and heat generated within your engine's connecting rod journals. They are specifically sized at +0.25mm, meaning they are meant for engines where the crankshaft journals have been machined down by 0.25mm during a rebuild. This set is designed for Toyota 3K and 4K engines, commonly found in models like the 1968-1979 Toyota Corolla.

When you're rebuilding an engine, especially one from this era, ensuring the bearings can handle the oil pressure and friction is critical. The bimetal construction offers a good balance of strength and conformability, helping to maintain an oil film between the bearing and the crankshaft. This helps prevent metal-on-metal contact, which is essential for the longevity of your engine's rotating assembly. Installing these bearings is a standard part of a connecting rod or full engine rebuild process.