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

In this kit, you get a set of main bearings for your Toyota 3K or 4K engine. These bearings are sized 0.25mm over the standard size, which is important if you've had your crankshaft machined to a larger size. They feature an aluminum base, making them a bimetal design that's common in many engines.

King Engine Bearings uses a bimetal construction with an aluminum base for these main bearings. This design helps manage heat and wear effectively in your engine's rotating assembly. When you're rebuilding or refreshing your engine, properly sized and well-built main bearings are crucial for ensuring smooth operation and longevity.

Make sure to check your crankshaft journal dimensions before installing these bearings. If your crankshaft has been ground undersize, you'll need a different bearing size. Always refer to your vehicle's service manual for specific installation procedures and torque specifications.