The PROX valve stem seal (manufacturer reference 35.VS017) is a wear part designed to ensure sealing around the valve stem on quad engines. Specifically designed to prevent oil from seeping into the combustion chamber, it helps maintain controlled lubrication of the valves without allowing excess oil that could cause smoke or deposits.
- Brand: PROX
- Designation: PROX valve stem seal
- Manufacturer reference: 35.VS017
- Delivered: individually
- Category: Valve stem seals
- Associated universe: Quad
- Frequent applications:
- YAMAHA YFM 350 GRIZZLY 4WD (2015 - 350 cm3)
- YAMAHA YFM 350 GRIZZLY 2WD (2015 - 350 cm3)
- YAMAHA YFM 350 RAPTOR 2WD (2013 - 350 cm3)
A simple yet essential part for engine maintenance: replace the worn seal during a cylinder head disassembly or valve replacement. Before installation, check the condition of the guides and valve seats and follow the manufacturer's recommendations for installation (appropriate extraction/installation tool). Ideal for motorcyclists and riders who maintain their quad themselves or prepare for a thorough service.
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