Description

The WSM 010-862K Piston Kit is the leading aftermarket replacement solution for the supercharged Sea-Doo 1503 4-TEC engine. Designed for 215, 255, and 260 hp models produced between 2004 and 2017, this kit offers precise machining dimensions (99.96 mm – standard size) for a reliable and durable engine rebuild. It directly replaces OEM part numbers 420890244 and 420892735.

Whether you're performing a complete overhaul after overheating or a preventative replacement, this kit guarantees a perfect fit in the cylinder and optimal power recovery for your Sea-Doo jet ski.

Technical Details

WSM Part Number: 010-862K
Diameter: 99.96 mm (standard size)
Engine Application: Supercharged Sea-Doo 1503 4-TEC
Horsepower Covered: 215 / 255 / 260 hp
Replaced OEM: 420890244, 420892735
Brand: WSM (aftermarket)
Contents: Complete kit (piston + rings + pin + circlips) as illustrated
Weight: 0.69 kg

Compatibility

Compatible with Sea-Doo models equipped with the supercharged 1503 4-TEC engine:

GTR 215 (2012–2016)
GTX 215 / LTD 215 / LTD IS 255 / LTD IS 260 (2006–2016)
RXP / RXP X 255 / RXP X 260 (2004–2015)
RXT / RXT IS 255 / RXT IS 260 / RXT X 255 / RXT X 260 / RXT X AS 260 (2005–2017)
Challenger / SE / SP / Wake 215–260 (2005–2012)
Speedster 200 / 215 / 255 / 430 / 510 (2006–2012)
Islandia SE 215 / 430 (2008–2009)
Utopia / SE 215 / 430 (2008–2009)
Sportster S/C 215 (2005–2006)
Wake / Wake Pro 215 / 255 / 430 / 510 (2007–2015)

Always check your OEM part number before ordering.

Why Replace the Piston?

The piston is one of the most stressed parts of the 1503 4-TEC engine. Excessive wear, cylinder scoring, or overheating can lead to loss of compression, abnormal oil consumption, or an engine that no longer starts. Replacing the piston kit in time prevents costly engine failure and restores your Sea-Doo's original performance.