Crankshaft Main Bearing for Sea-Doo GTR-X 300 1630 2024-2026

Crankshaft Main Bearing for Sea-Doo

This crankshaft main bearing is a replacement engine component that supports the crankshaft in Sea-Doo GTR-X 300 1630 watercraft, keeping rotation true under load.

Overview

This crankshaft main bearing is built to support the crankshaft inside the 1630 engine used in Sea-Doo GTR-X 300 models. A crankshaft main bearing controls radial play and keeps oil clearance consistent so the rotating assembly stays stable at RPM. It suits riders and mechanics rebuilding the bottom end of a 2024 to 2026 Sea-Doo GTR-X 300 1630.

Built For Performance

• Precision-ground bearing surfaces for consistent crankshaft support
• Constructed to hold correct oil clearance under sustained load
• Rated for the operating RPM range of the 1630 engine
• Built to resist wear from continuous marine use
• Direct replacement for the crankshaft main bearing position

Fits These Machines

• for Sea-Doo GTR-X 300 1630, 2024-2026

On-The-Job Use

• Engine bottom-end rebuilds on 1630 powerplants
• Crankshaft service and bearing replacement work
• Marine shop rebuild and refresh jobs

Specs At A Glance

Good To Know

Q: How many main bearings does a rebuild normally need? A: Count the main bearing journals on your crankshaft and order one bearing per journal. Confirm against your engine parts diagram before buying.

Q: Should main bearings be replaced in a set? A: Most rebuilders replace all main bearings at once so clearances stay even across the crankshaft. Reusing worn bearings alongside new ones can cause uneven wear.

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