420947573 Crankshaft Output Sleeve for Sea-Doo Spark 2Up 900 2017-2021

Crankshaft Output Sleeve for Sea-Doo Spark 2Up 900

This crankshaft output sleeve (OEM cross-reference 420947573) is a replacement sealing and support component that fits over the crankshaft output to help maintain proper alignment and protect against oil migration on 2017-2021 Sea-Doo Spark 2Up 900 watercraft.

Overview

The crankshaft output sleeve for Sea-Doo Spark 2Up 900 is a precision-fit replacement part that installs over the crankshaft output to provide a smooth sealing surface and support proper alignment of surrounding components. This crankshaft output sleeve is built to match the original fitment so it drops into place without modification. It suits riders and mechanics performing routine engine service or rebuilding a 900 ACE-powered Spark.

Built For Performance

• Precision machined for a consistent fit over the crankshaft output
• Constructed from durable material to resist wear from continuous rotation
• Provides a clean sealing surface to help prevent oil seepage
• Direct replacement for OEM part number 420947573
• Designed specifically for the Rotax 900 ACE engine platform used in the Spark

Fits These Machines

• for Sea-Doo Spark 2Up 900 (2017-2021)

On-The-Job Use

• Crankshaft and lower-end engine service on Sea-Doo Spark watercraft
• Engine rebuilds and top-to-bottom refreshes on 900 ACE motors
• Sealing repairs when oil seepage appears around the crankshaft output
• Routine maintenance performed by dealers and independent mechanics

Specs At A Glance

Good To Know

Q: Is this an original Sea-Doo part? A: This is an aftermarket replacement crankshaft output sleeve that cross-references OEM part number 420947573, and it is not manufactured by Sea-Doo.

Q: Do I need any special tools to install it? A: Installation generally requires standard engine disassembly tools since the sleeve sits on the crankshaft output, so consult a service manual for the correct procedure on your model.

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