Description

This valve kit is designed for the complete overhaul of the cylinder head on Sea-Doo 4-TEC Rotax engines. Referenced as 420254682 and 420253163, it includes 6 intake valves and 6 exhaust valves for a complete refurbishment in a single supply. Essential during engine reconstruction, lapping after cylinder head resurfacing, or if a loss of compression is detected during a compression test. Note: these are single-groove valves. If your engine's original valves are triple-groove, please choose our triple-groove valve kit instead.

Technical Specifications

Replaces OEM References: 420254682 (exhaust valve) and 420253163 (intake)
Type: Intake + exhaust valve kit (x6 + x6)
Application: Rotax 4-TEC 130 to 300 HP engine
Material: High thermal resistance steel
Condition: New
Packaging: Complete kit (12 valves)
Weight: 0.6 kg
Regulated substances: None
Installation: Direct OEM replacement – lapping recommended after installation

Sea-Doo 4-TEC Compatibility

This valve kit is compatible with the following Sea-Doo models equipped with the Rotax 4-TEC engine:

2004–2007: Sea-Doo GTI, GTI LE, GTI RFI, GTI LE RFI, GTI Rental, GTI SE, GTI 4-TEC SE
2013–2016: Sea-Doo GTI 130, GTI 130 SE
Sea-Doo GTX 155 / 185 / 215 / 255 / 260
Sea-Doo RXP / RXP-X
Sea-Doo RXT / RXT-X
Sea-Doo XP 4-TEC

⚠️ Always check your serial number (VIN) and the original OEM reference before ordering to confirm exact compatibility with your model.

Why Replace Your Sea-Doo Valves?

The 4-TEC engine valves are subjected to intense thermal cycles every time you are out on the water. Over time, they wear out, deform, or lose their seal, leading to a drop in engine performance. Common symptoms of wear include:

Loss of compression measured during testing
Difficult or unstable starting
Abnormally high fuel consumption
Clattering or metallic noises during acceleration
Progressive loss of power

It is recommended to replace the valves as a complete kit (intake + exhaust) to ensure perfect balancing and avoid any imbalance between cylinders. Also, consider replacing the valve stem seals available on this site for a complete overhaul.