Crankshaft Main Bearing for Sea-Doo GTI SE DT 1503 2007

Crankshaft Main Bearing for Sea-Doo

This crankshaft main bearing supports the crankshaft in your Sea-Doo 1503 4-TEC engine, keeping rotation true under load and protecting the crankcase from excess wear.

Overview

This crankshaft main bearing is a direct replacement engine bearing for the Sea-Doo 1503 4-TEC platform, built to hold the crankshaft steady inside the crankcase during high-RPM operation. It serves riders rebuilding a GTI SE DT engine or refreshing bottom-end bearings on a higher-hour machine. Choose this crankshaft main bearing when the original bearing shows scoring, pitting, or play that puts the crank at risk.

Built For Performance

• Precision-ground rolling surface for consistent crankshaft support
• Hardened steel construction built to handle 1503 4-TEC operating loads
• Dimensional tolerances matched to the OEM bearing journal
• Rated for sustained high-RPM marine use
• Sold individually so you can replace only the bearings showing wear

Fits These Machines

• for Sea-Doo GTI SE DT with the 1503 engine (2007)

On-The-Job Use

• Bottom-end rebuilds on 1503 4-TEC equipped watercraft
• Crankshaft replacement jobs where bearings are refreshed at the same time
• Routine teardown inspections on high-hour GTI SE models
• Shop service work on Sea-Doo personal watercraft engines

Specs At A Glance

Good To Know

Q: How many main bearings does a 1503 4-TEC engine use? A: The 1503 4-TEC uses multiple main bearings along the crankshaft, so check your service manual and order the quantity your rebuild requires. Inspect every journal before assembly and replace any bearing showing wear.

Q: Can I replace just one main bearing? A: You can, but most builders replace the full set once the cases are split to avoid a second teardown. Measure crankshaft journal wear first to confirm the crank itself is still within spec.

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