PROX Ignition Cover Gasket for YAMAHA YZ 250 and FANTIC XX 250 1999-2026

On YAMAHA YZ 250 and FANTIC XX 250 from 1999 to 2026, the PROX 19.G92399 ignition cover gasket fits in place of the original part. On the left-hand side of the engine, the ignition cover protects the flywheel and the stator. Its gasket keeps it sealed: a crushed or torn gasket lets oil, water or dust through.

Specifications

• Brand: PROX
• Manufacturer part number: 19.G92399
• Weight: 20 g
• Engine: 2-stroke

When to replace it?

• Oil seeping around the edge of the ignition cover.
• Water or mud inside the cover after washing.
• Gasket torn or stuck on removal.

Every time the ignition cover comes off: stator check, replacement of an ignition-side crankshaft oil seal or bottom end rebuild.

Fitting tips

1. Clean both gasket faces without scratching them.
2. Fit the gasket dry; a dab of grease can hold it in place during reassembly.
3. Tighten the screws in a criss-cross pattern, without forcing, to the manufacturer's torque.
4. On an engine where the ignition runs in oil, top up the oil level after reassembly.

Why PROX?

ProX Racing Parts has been supplying engine and clutch parts to motocross riders since 1975, from its headquarters near Amsterdam. According to its catalogue, most of its parts are made in Japan, by manufacturers that also produce parts for the Japanese motorcycle makers.

Spare parts and items to plan

• Complete engine gasket kit : PROX · MOOSE
• Clutch cover gasket : BOYESEN · ATHENA
• 2-stroke oil : LIQUI MOLY 1 L 3065 · LIQUI MOLY 1 L 3063

Frequently asked questions

Can I reuse the old gasket?
No: a paper or fibre gasket tears or stays crushed when removed. If you're opening several covers, a complete engine gasket kit often works out cheaper.

Compatibility

Check the exact model and year of your bike in the list below before ordering.

Fits:
FANTIC XX 250 2026
FANTIC XX 250 2025
FANTIC XX 250 2024
FANTIC XX 250 2023
FANTIC XX 250 2022
YAMAHA YZ 250 2026
YAMAHA YZ 250 2025
YAMAHA YZ 250 2024
YAMAHA YZ 250 2023
YAMAHA YZ 250 2022
YAMAHA YZ 250 2021
YAMAHA YZ 250 2020
YAMAHA YZ 250 2019
YAMAHA YZ 250 2018
YAMAHA YZ 250 2017
YAMAHA YZ 250 2016
YAMAHA YZ 250 2015
YAMAHA YZ 250 2014
YAMAHA YZ 250 2013
YAMAHA YZ 250 2012
YAMAHA YZ 250 2011
YAMAHA YZ 250 2010
YAMAHA YZ 250 2009
YAMAHA YZ 250 2008
YAMAHA YZ 250 2007
YAMAHA YZ 250 2006
YAMAHA YZ 250 2005
YAMAHA YZ 250 2004
YAMAHA YZ 250 2003
YAMAHA YZ 250 2002
YAMAHA YZ 250 2001
YAMAHA YZ 250 2000
YAMAHA YZ 250 1999