BRP-Rotax started the worldwide trend of PWCs to 4-stroke engines with the unveiling of our 4-TEC watercraft engines. Today's marines include 2- and 4-stroke engines in 2- and 3-cylinder inline configurations, covering a range between 130 and 215 HP.

	Engine Type 1503 SC IC 4-stroke 3 cylinder 12 valves 159 kW / 215 HP 1493.8 ccm Liquid cooled Closed loop cooling circuit Dry sump lubrication Mechanically driven supercharger Intercooler

	Engine Type 1503 HO 4-stroke 3 cylinder 12 valves 188 kW / 255 HP 1493.8 ccm External intercooler 2 water cooling circuits (one closed water cooling circuit) Dry sump lubrication 2 oil pumps with replaceable paper oil filter Mechanically driven supercharger

	Engine Type 1503 NA 4-stroke 3 cylinder 12 valves 114 kW / 155 HP 1493.8 ccm Liquid cooled Closed loop cooling circuit Dry sump lubrication

	Engine Type 1503 DT 4-stroke 3 cylinder 12 valves 95 kW / 130 HP 1493.8 ccm Liquid cooled Closed loop cooling circuit Dry sump lubrication