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The Rotax 1503 engine is an engineering masterpiece, the only 4 stroke engine specifically designed for watercraft use, the only watercraft engine with a closed loop cooling system. It is now available in several variations from the new 135hp found in the 2006 GTI range right up to the wopping 215hp supercharged intercooled monster found in the Seadoo RXP/RXT/GTX LTD and is also available in various Sea doo jet boats.

It has 1503cc 3 cylinder’s single overhead cam pushing 12 valves. The engine is a dry sump variety running with twin oil pumps and a tip over protection system to stop the oil from flowing to unwanted areas in the case of the watercraft being inverted. Valve timing is designed in such a way that every time you turn off your 4 tec equipped Sea doo the engine will stop with all 12 valves firmly closed to make water ingression almost impossible.

The exploded diagram shows the supercharged intercooled engine.

jet ski engine 4 tec

SERPAIRS

We carry a complete range of Sea doo and Jet Ski parts also Seadoo boats.If you can not find the part you require at our online Jet Ski shop ,Please call on 01227 771 831 and we will be glad to assist you with any Jet Ski or parts request.

service We also Have a second to none Jet Ski workshop that can handle almost any job you throw at us. Most of the work is carried out in house by fully qualified Jet Ski engineers. We also specialise in the manufacture of custom built Jetski and Boat trailers & launch trolleys, specifically designed to suit your needs.We stock a vast range of seadoo and jet ski parts and seadoo and jet ski accessories
For our factory trained engineers, there is no job too big (or small).

ROTAX HISTORY

In 1920, BRP-Rotax began revolutionizing the engine. With a gifted team and a dedicated vision, we've never looked back.

BRP-Rotax has developed over 350 engine types and has produced more than 5 million engines over the last century.

 

2003

Sale of Recreational Products Group by Bombardier Inc.; Foundation of Bombardier Recreational Products Inc. (BRP) with BRP-Rotax as part of the new company.

Presentation of the innovative V220 and V300 aircraft engines developed by BRP-Rotax.

BRP-Rotax is approved as International Design Organisation according to JAR-21 by the European Joint Aviation Authorities (JAA).

2002

Launch of the new 2-stroke semi-direct electronic injection technology : ROTAX 2-TEC engines for Ski-Doo snowmobiles.

Launch of the ROTAX Kart RM1 with direct drive (without chain).

2001

Launch of ROTAX 4-TEC 4-stroke engines for Sea-Doo watercraft.

2000

The ROTAX Quality Production System (RQPS) is initiated.

1998

Production of ROTAX engines for Bombardier ATVs begins.

1993

Production of ROTAX motorcycle engines for BMW†, Germany begins.

1988

Production of ROTAX marine engines for Bombardier Sea-Doo watercraft begins.

1983

Production of ROTAX motorcycle engines for APRILIA begins.

1982

Production of ROTAX 4-stroke and aircraft engines begins.

1970

Bombardier and ROTAX integrate

1962

For the first time, a ROTAX engine is installed in a Ski-Doo snowmobile developed by Bombardier.

1959

LOHNERWERKE GmbH of Vienna acquires a majority shareholding in Rotax.

1947

Operations are relocated to Gunskirchen near Wels.

1943

Operations are relocated to Wels, Austria

1930

The company is taken over by Fichtel & Sachs AG and transfers its operations to Schweinfurt/Germany.

1920

ROTAX WERK AG is established in Dresden, Germany