Crankshaft Main Bearing for Sea-Doo GTX S/C 1503 2003-2006

Crankshaft Main Bearing for Sea-Doo

This crankshaft main bearing is a replacement engine component that supports the crankshaft inside the crankcase of a Sea-Doo GTX S/C 1503 watercraft, keeping rotation smooth and reducing friction under load.

Overview

This crankshaft main bearing serves as a direct supporting element for the crankshaft in the Sea-Doo GTX S/C 1503 engine. It helps maintain proper alignment and load distribution so the rotating assembly can spin freely at high RPM. Built for riders and mechanics rebuilding or servicing a 2003-2006 Sea-Doo GTX S/C 1503, this crankshaft main bearing restores dependable bottom-end function.

Built For Performance

• Precision-machined bearing surface for consistent crankshaft support
• Constructed from durable bearing-grade materials for wear resistance
• Designed to handle the loads of a supercharged 1503 engine
• Maintains proper oil clearance for reliable lubrication
• Fits 2003-2006 Sea-Doo GTX S/C 1503 bottom ends

Fits These Machines

• for Sea-Doo GTX S/C 1503, 2003
• for Sea-Doo GTX S/C 1503, 2004
• for Sea-Doo GTX S/C 1503, 2005
• for Sea-Doo GTX S/C 1503, 2006

On-The-Job Use

• Crankshaft rebuilds and bottom-end service
• Engine overhaul and bearing replacement jobs
• Restoring a 2003-2006 Sea-Doo GTX S/C 1503 to running condition

Specs At A Glance

Good To Know

Q: What does a crankshaft main bearing do? A: It supports the crankshaft within the crankcase and helps maintain oil clearance so the rotating assembly turns smoothly. A worn main bearing can cause noise, vibration, or low oil pressure.

Q: Should main bearings be replaced in sets? A: Main bearings are typically replaced as a set during a rebuild to keep clearances consistent. Always verify bearing sizes and tolerances against the engine's service specifications.

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