Crankshaft Main Bearing for Sea-Doo RXT 1503 2005-2006

Crankshaft Main Bearing for Sea-Doo RXT 1503

This crankshaft main bearing supports the crankshaft in Sea-Doo RXT 1503 watercraft, keeping rotation true and limiting wear inside the engine cases.

Overview

The crankshaft main bearing is a precision engine component made for the Sea-Doo RXT 1503 platform. It holds the crankshaft in position so it spins smoothly under load, helping prevent excess movement that damages case surfaces. This bearing suits riders and mechanics rebuilding or refreshing a 1503 engine who want a dependable replacement part.

Built For Performance

• Precision-ground rolling surfaces for smooth crankshaft rotation
• Hardened steel construction built to handle high-rpm marine use
• Exact sizing to seat correctly in the engine case bore
• Resists heat and load cycling common in personal watercraft engines
• Direct replacement for the original bearing position on the 1503 crank

Fits These Machines

• for Sea-Doo RXT 1503, 2005
• for Sea-Doo RXT 1503, 2006

On-The-Job Use

• Engine rebuilds on 1503-powered RXT watercraft
• Crankshaft service when cases are split
• Bottom-end refresh during a top-end or full teardown
• Replacing a worn or noisy main bearing before failure spreads damage

Specs At A Glance

Good To Know

Q: How many main bearings does a 1503 crankshaft use? A: A 1503 crank is supported by multiple main bearings along its length, so check your service manual for the exact positions and quantity needed for your rebuild.

Q: Should main bearings be replaced in a set? A: Replacing all main bearings in the set during a rebuild is standard practice, since wear usually affects them evenly and mixing old and new can upset clearances.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.