Intake & Exhaust Valve Kit – Sea-Doo 4-TEC Rotax Engine

This replacement valve kit is designed for a complete cylinder head overhaul on Sea-Doo 4-TEC Rotax engines. It includes both intake and exhaust valves under OEM reference 420254682, ensuring optimal sealing of the combustion chambers. Essential for engine rebuilds, break-in after cylinder head resurfacing, or if compression loss is detected during inspection.

Technical Specifications

OEM Reference: 420254682
Application: Intake + exhaust valves, Rotax 4-TEC engine
Packaging: Kit (6 intake valves + 6 exhaust valves)
Material: High-strength heat-resistant steel
Weight: 0.6 kg
Condition: New
Regulated Substances: None
Installation: Direct OEM replacement, break-in recommended

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 4TEC 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 original OEM reference before ordering to confirm exact compatibility with your model.

Why Replace Your Sea-Doo Valves?

The valves of the 4-TEC engine are subjected to intense thermal cycles with each outing at sea. Over time, they wear out, deform, bend, stick, or lose their sealing capacity, leading to a drop in engine performance. Common symptoms of wear include:

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

It is recommended to replace valves as a complete kit (intake + exhaust) to ensure perfect balancing and avoid imbalance between cylinders. Consider replacing the valve stem seals (valve stem seals or valve seals) at the same time, available on this site.