Crankshaft Main Bearing for Sea-Doo LTD 18-300 1630 2026

Crankshaft Main Bearing for Sea-Doo

This crankshaft main bearing is a replacement engine component designed to support the crankshaft and keep it rotating true inside the crankcase on select Sea-Doo watercraft.

Overview

This crankshaft main bearing is built to carry the load of the crankshaft in your Sea-Doo engine and help hold oil clearance within spec. As a wear item, the crankshaft main bearing plays a direct role in keeping vibration down and oil pressure steady at high rpm. It suits riders and shops rebuilding a 1630 engine who want a dependable replacement bearing on hand.

Built For Performance

• Precision-machined bearing surface for consistent crankshaft support
• Hardened steel construction for load handling under high rpm
• Designed as a direct replacement for the original bearing position
• Sized for 1630 engine crankshaft applications
• Sold as a single bearing for targeted replacement

Fits These Machines

• for Sea-Doo LTD 18-300 1630 (2026)

On-The-Job Use

• Bottom-end rebuilds on 1630 Sea-Doo engines
• Replacing worn or scored main bearings during tear-down
• Crankshaft service after oil starvation or contamination
• Shop builds and preventative engine maintenance

Specs At A Glance

Good To Know

Q: How many main bearings does my engine need? A: Crankshaft main bearings are usually replaced as a full set, so check your service manual for the exact count before ordering. This listing is for one bearing.

Q: Should bearings be matched to the crank journal size? A: Yes, main bearings must match the crank journal grade and corresponding bearing size. Verify your engine code and journal measurements before installation.

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