Magneto Cover / PTO Cover Gasket – Rotax 4-Tec 1503 Engine

This magneto housing gasket (PTO cover) is designed for Rotax 4-Tec 1503 engines found in Sea-Doo jet skis and boats ranging from 130 to 300 horsepower. It ensures a perfect seal between the magneto cover and the engine block, preventing any oil leaks and protecting the internal electrical components.

OEM Part Number: 420931130

Technical Specifications

Part Reference: 420931130
Application: PTO Cover & Magneto Housing
Engine: Rotax 4-Tec 1503 (130 / 155 / 215 / 255 / 260 / 300 hp)
Material: High heat resistant gasket
Origin: OEM compatible replacement part

Compatibility – Sea-Doo & Williams Models

This gasket is compatible with a very wide range of Sea-Doo models equipped with the Rotax 4-Tec 1503 engine, from 2002 to 2022, as well as Williams Sportjet tenders powered by Rotax ACE 1503 and ACE 1630 engines. Models are grouped below by family:

🏄 Sea-Doo Personal Watercraft (PWC)

GTS / GTI / GTI SE / GTI LTD / GTI Rental: 2006–2022 (130, 155 hp)
GTR 215 / GTR 230: 2012–2022
GTX / GTX iS / GTX LTD iS / GTX S / GTX PRO: 2002–2022 (155, 215, 255, 260, 300 hp)
RXP / RXP-X: 2004–2019 (155, 215, 255, 260, 300 hp)
RXT / RXT iS / RXT-X / RXT aS X: 2005–2022 (215, 255, 260, 300 hp)
WAKE / WAKE PRO: 2005–2022 (130, 155, 215, 230 hp)
FISH PRO: 2019–2021 (170 hp)

🚤 Sea-Doo Sport Boats

Sportster 4-TEC: 2003–2006
Speedster 150 / 200: 2004–2012 (155, 215, 255, 260 hp)
Challenger 180 / 180 SE / 180 SP: 2005–2012 (215, 255, 260 hp)
Challenger 210 / 210 SE / 210 SP / 210 Wake: 2010–2012 (310, 430 hp)
Challenger 230 / 230 SE / 230 SP / 230 Wake: 2007–2012 (155, 215, 255, 260, 310, 430, 510, 520 hp)
Utopia 205 / 205 SE: 2006–2011 (155, 215, 310, 430 hp)
Islandia 220 / SE: 2006–2009 (155, 215, 430 hp)

⛵ Williams Sportjet Tenders

Williams 435 Sportjet – Sport (Rotax ACE 1503 or ACE 1630)
Williams 400 / 460 / 520 Sportjet (Rotax ACE 1503 or ACE 1630)

⚠️ If in doubt, always check OEM reference 420931130 in your parts manual or contact us before ordering.

Why Choose This Part?

✅ OEM Compatible – Dimensions and materials conform to original BRP/Rotax specifications
✅ Wide Compatibility – Covers over 20 years of Sea-Doo production (2002–2022) + Williams tenders
✅ Optimal Seal – Prevents oil leaks and protects the magneto
✅ Fast Shipping – In stock, delivery to Europe & USA
✅ Competitive Price – Economical alternative to original BRP part