Crankshaft Main Bearing for Sea-Doo GTI SE NA 1503 2007 2019

Crankshaft Main Bearing for Sea-Doo

This crankshaft main bearing is a replacement engine component that supports the crankshaft inside the 1503 engine used in Sea-Doo personal watercraft.

Overview

This crankshaft main bearing is built to support the rotating crankshaft in the 1503 engine found in Sea-Doo watercraft. As a crankshaft main bearing, it keeps the crank centered and spinning smoothly under load for riders servicing a GTI SE NA. It suits owners and mechanics handling a bottom-end rebuild or replacing a worn bearing in a 1503 powerplant.

Built For Performance

• Designed as a direct-fit crankshaft main bearing for the 1503 engine
• Supports crankshaft alignment to reduce vibration under load
• Constructed from durable bearing materials for marine-duty use
• Handles the rotational forces of a high-revving personal watercraft engine
• Sold as an individual bearing to match your rebuild needs

Fits These Machines

• for Sea-Doo GTI SE NA 1503, 2007
• for Sea-Doo GTI SE NA 1503, 2019

On-The-Job Use

• Bottom-end engine rebuilds on 1503-equipped watercraft
• Crankshaft service and bearing replacement
• Routine engine maintenance on Sea-Doo GTI SE NA models
• Shop and DIY rebuild projects

Specs At A Glance

Good To Know

Q: How many bearings do I need for a full rebuild? A: The quantity depends on your engine's main bearing positions, so count the locations in your 1503 crankcase before ordering. Ordering the exact number you need avoids shortages mid-build.

Q: Should bearings be replaced as a set? A: Replacing all main bearings together during a rebuild is common practice since wear tends to be even across positions. Matching the bearing to your crank and case condition helps ensure proper clearances.

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