ATHENA NOK Fork Oil Seal Kit 43x55x9.5/10.5 mm for YAMAHA, KAWASAKI, SUZUKI and HONDA 1981-2019

The ATHENA 43x55x9.5/10.5 mm NOK P40FORK455153 fork oil seal kit is designed for YAMAHA IT 200, IT 250, IT 490, XT 660, YZ 250, YZ 465, YZ 490, KAWASAKI KDX 200, KLX 250, KX 125, KX 250, KX 500, SUZUKI DL 1000, RM 125, RM 250, RM 465, RM 500 and HONDA CR 250, CR 480 from 1981 to 2019. Fitted at the top of the fork leg, under the dust seal, the oil seal keeps the fork sealed. A leak lowers the oil level, the damping changes and oil can run onto the brake disc.

Specifications

• Brand: ATHENA
• Manufacturer part number: P40FORK455153
• EAN code: 8051764549719
• Weight: 60 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 ATHENA?

Founded in 1973 near Vicenza, Athena is an Italian engine gasket specialist that has made its gaskets on its own production lines since day one, as well as a renowned manufacturer of pistons and cylinder kits. The brand supplies original equipment to manufacturers such as KTM, Ducati, Fantic, Piaggio and Triumph, and is a partner of the MXGP motocross world championship.

Spare parts and items to plan

• Fork dust seals : ATHENA P40FORK455098 · ATHENA P40FORK455131
• Fork oil : LIQUI MOLY 10W 500 ml
• Fork bushings : KYB · ATHENA

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:
HONDA CR 250 1982
HONDA CR 480 1982
KAWASAKI KDX 200 1992
KAWASAKI KDX 200 1991
KAWASAKI KDX 200 1990
KAWASAKI KDX 200 1989
KAWASAKI KDX 200 1988
KAWASAKI KDX 200 1987
KAWASAKI KDX 200 1986
KAWASAKI KLX 250 1998
KAWASAKI KLX 250 1997
KAWASAKI KLX 250 1996
KAWASAKI KLX 250 1995
KAWASAKI KLX 250 1994
KAWASAKI KLX 250 1993
KAWASAKI KX 125 1987
KAWASAKI KX 125 1986
KAWASAKI KX 125 1985
KAWASAKI KX 125 1984
KAWASAKI KX 125 1983
KAWASAKI KX 250 1987
KAWASAKI KX 250 1986
KAWASAKI KX 250 1985
KAWASAKI KX 250 1984
KAWASAKI KX 250 1983
KAWASAKI KX 500 1987
KAWASAKI KX 500 1986
KAWASAKI KX 500 1985
KAWASAKI KX 500 1984
KAWASAKI KX 500 1983
SUZUKI DL 1000 2019
SUZUKI DL 1000 2018
SUZUKI DL 1000 2017
SUZUKI DL 1000 2016
SUZUKI DL 1000 2015
SUZUKI DL 1000 2014
SUZUKI RM 125 1987
SUZUKI RM 125 1986
SUZUKI RM 125 1985
SUZUKI RM 125 1984
SUZUKI RM 250 1987
SUZUKI RM 250 1986
SUZUKI RM 250 1985
SUZUKI RM 250 1984
SUZUKI RM 250 1983
SUZUKI RM 465 1982
SUZUKI RM 465 1981
SUZUKI RM 500 1984
SUZUKI RM 500 1983
SUZUKI RM 500 1982
YAMAHA IT 200 1986
YAMAHA IT 200 1985
YAMAHA IT 200 1984
YAMAHA IT 250 1983
YAMAHA IT 490 1984
YAMAHA IT 490 1983
YAMAHA XT 660 1994
YAMAHA XT 660 1993
YAMAHA XT 660 1992
YAMAHA XT 660 1991
YAMAHA YZ 250 1995
YAMAHA YZ 250 1988
YAMAHA YZ 250 1987
YAMAHA YZ 250 1986
YAMAHA YZ 250 1985
YAMAHA YZ 250 1984
YAMAHA YZ 250 1983
YAMAHA YZ 250 1982
YAMAHA YZ 250 1981
YAMAHA YZ 465 1981
YAMAHA YZ 490 1990
YAMAHA YZ 490 1989
YAMAHA YZ 490 1988
YAMAHA YZ 490 1987
YAMAHA YZ 490 1986
YAMAHA YZ 490 1985
YAMAHA YZ 490 1984
YAMAHA YZ 490 1983
YAMAHA YZ 490 1982