SKF Fork Oil Seal 41x53.1x7.5 mm for YAMAHA XT 600 1984-1995

The SKF 41x53.1x7.5 mm OSB-41Y fork oil seal is designed for YAMAHA XT 600 from 1984 to 1995. The fork oil seal keeps the oil inside the fork leg while letting the inner tube slide. It is a wear item: dust, mud and impacts on the tubes eventually damage its lip, and the fork leaks.

Specifications

• Brand: SKF
• Manufacturer part number: OSB-41Y
• EAN code: 8050040143665
• 3.4 mm spacer
• Weight: 30 g

When to replace it?

• Film of oil on the inner tube after a few fork strokes.
• Oil traces on the fork leg, the caliper or the brake disc.
• Fork that becomes softer on one side.

Before replacing a leaking seal, clean under its lip: a trapped grain of sand is sometimes enough to cause the leak. If it still leaks, replace the seals on both legs. Measure your seal (inside diameter, outside diameter and height) or check the original part number: the size is in the name.

Fitting tips

1. Drain and disassemble the fork leg following the manual, then remove the dust seal, the circlip and the old seal.
2. Check the fork bushings and the condition of the inner tube: a scratch or a rust spot will cut a new seal.
3. Protect the end of the tube (plastic bag), oil the lip and drive the seal in straight with a seal driver of the right diameter.
4. Refit the circlip and a new dust seal, then reset the fork oil level.

Why SKF?

SKF is renowned for its fork seals, among the most durable in motocross according to the American magazine Motocross Action, which notes that the WP forks on KTMs are fitted with them as original equipment. In its Dual Compound range, the brand combines two rubber compounds moulded together: a tough green dust wiper and a softer red sealing lip, both reinforced by a metal insert.

Spare parts and items to plan

• Fork dust seals : ATHENA
• Fork oil : LIQUI MOLY 10W 500 ml
• Fork bushings : SKF

Frequently asked questions

Do I have to change both seals?
Yes: they have the same age and the same mileage. Replace both oil seals and, ideally, both dust seals.

Why is my new seal leaking?
Most often because of a scratched or pitted tube, a lip turned back during installation, or worn bushings that let the tube develop play.

Compatibility

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

Fits:
YAMAHA XT 600 1995
YAMAHA XT 600 1994
YAMAHA XT 600 1993
YAMAHA XT 600 1992
YAMAHA XT 600 1991
YAMAHA XT 600 1990
YAMAHA XT 600 1989
YAMAHA XT 600 1988
YAMAHA XT 600 1987
YAMAHA XT 600 1986
YAMAHA XT 600 1985
YAMAHA XT 600 1984