SBT 1503 4-Tec Long Block Engine 29-112A-7CPS23, Replaces 420613978, Sea-Doo GTX GTI RXP Wake 2006-2019

This is a new SBT 1503 naturally aspirated long block, part number 29-112A-7CPS23, that replaces Sea-Doo OEM 420613978 on 4-Tec jet skis. It is the swap to consider when the engine in your GTX, GTI, RXP or Wake PWC is worn out or damaged past the point where a rebuild makes sense. No core is required. It is naturally aspirated, so it is not for supercharged models.

Fits

• Sea-Doo GTX 4-Tec / GTX / GTX S / GTX Limited (2006-2016)
• Sea-Doo GTI SE 155 / GTI LTD 155 (2006-2016)
• Sea-Doo Wake 155 / GTX 4-Tec Wakeboard 155 (2006-2016)
• Sea-Doo RXP / RXP 155 (2007-2008)
• Sea-Doo Islandia 220 (2007-2008)
• Sea-Doo Challenger CS/Tower (2008)
• Sea-Doo 150 Speedster 155 (2009-2012)
• Sea-Doo 210 Challenger 310 (2010)
• Sea-Doo Fish Pro 155 (2019)

What's included

• New 1503 long block
• Crankcases
• Cylinders
• Cylinder head
• Internal components
• Valve cover
• Painted exterior, about 135 pounds
• An installation kit is required and is purchased separately

Replaces OEM part numbers

420613978

Not sure it fits your ski? Call or text 954-914-6465 with your hull ID (HIN) and we'll confirm before you order.