ATHENA Oil Seal 20x40x7 mm for KAWASAKI KX 60, 65, 80, 85, 100, 112, 250 and SUZUKI RM 60, 65, 100 1985-2025

The ATHENA 20x40x7 mm M730901120010 oil seal is designed for KAWASAKI KX 60, KX 65, KX 80, KX 85, KX 100, KX 112, KX 250 and SUZUKI RM 60, RM 65, RM 100 from 1985 to 2025. An oil seal (lip seal) seals the gap between a spinning shaft and the casing it passes through: its lip, held against the shaft by a small spring, keeps the oil in and stops water and dirt getting in. It is identified by three dimensions in millimetres: inner diameter (the shaft), outer diameter (the housing) and thickness.

Specifications

• Brand: ATHENA
• Manufacturer part number: M730901120010
• EAN code: 8051757021963
• Rubber-covered outer case
• Profile: TC
• Engine: 2-stroke

When to replace it?

• Oil weeping or leaking around the shaft.
• Lip hardened, cracked or turned over when you take the seal out.
• A groove worn into the shaft where the lip runs: the new seal must sit on a clean, undamaged surface.
• On a two-stroke, a crankshaft seal that lets air in makes the idle unstable and leans out the mixture.

Replace an oil seal as soon as it leaks, and always whenever you remove it: once a lip has come out of its housing, it never seals properly again. Note the three dimensions marked on the old seal (for example 20 x 32 x 7) or measure the shaft, the housing and the thickness with a caliper.

Fitting tips

1. Drive out the old seal with a seal puller or a screwdriver with a protected tip, without scratching the housing or the shaft.
2. Clean the housing and check the shaft: a scratch or groove under the lip will make the new seal leak.
3. Lightly oil the lip or smear it with grease, then drive the seal in perfectly square with a socket that presses on its outer edge, lip (spring side) facing the oil.
4. Protect the lip from splines, threads or keys as the shaft goes through (adhesive tape or a thin sleeve).

Why ATHENA?

Athena, an Italian company founded in 1973 near Vicenza, designs gaskets, pistons and cylinder kits for motorcycles. An OEM supplier to KTM, Ducati, Fantic, Piaggio and Triumph and a partner of the MXGP world championship, it develops its parts on the test bench and on the track with racing teams.

Spare parts and items to plan

• Grease : MOTUL 400 g

Frequently asked questions

How do I read an oil seal size?
In this order: inner diameter, outer diameter, thickness, in millimetres. A 20 x 32 x 7 seal fits a 20 mm shaft in a 32 mm housing and is 7 mm thick.

NBR or FKM (Viton)?
NBR (nitrile rubber) suits most uses. FKM handles heat better: it's the right choice near the crankshaft or the water pump. The material is listed in the specifications when it is known.

Why would a new seal leak?
Most of the time the shaft is marked under the lip, the seal went in crooked, or the lip folded over as the shaft went through.

Compatibility

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

Fits:
KAWASAKI KX 60 2003
KAWASAKI KX 60 2002
KAWASAKI KX 60 2001
KAWASAKI KX 60 2000
KAWASAKI KX 60 1999
KAWASAKI KX 60 1998
KAWASAKI KX 60 1997
KAWASAKI KX 60 1996
KAWASAKI KX 60 1995
KAWASAKI KX 60 1994
KAWASAKI KX 60 1993
KAWASAKI KX 60 1992
KAWASAKI KX 60 1991
KAWASAKI KX 60 1990
KAWASAKI KX 60 1989
KAWASAKI KX 60 1988
KAWASAKI KX 60 1987
KAWASAKI KX 60 1986
KAWASAKI KX 60 1985
KAWASAKI KX 65 2025
KAWASAKI KX 65 2024
KAWASAKI KX 65 2023
KAWASAKI KX 65 2022
KAWASAKI KX 65 2021
KAWASAKI KX 65 2020
KAWASAKI KX 65 2019
KAWASAKI KX 65 2018
KAWASAKI KX 65 2017
KAWASAKI KX 65 2016
KAWASAKI KX 65 2015
KAWASAKI KX 65 2014
KAWASAKI KX 65 2013
KAWASAKI KX 65 2012
KAWASAKI KX 65 2011
KAWASAKI KX 65 2010
KAWASAKI KX 65 2009
KAWASAKI KX 65 2008
KAWASAKI KX 65 2007
KAWASAKI KX 65 2006
KAWASAKI KX 65 2005
KAWASAKI KX 65 2004
KAWASAKI KX 65 2003
KAWASAKI KX 65 2002
KAWASAKI KX 65 2001
KAWASAKI KX 65 2000
KAWASAKI KX 80 2000
KAWASAKI KX 80 1999
KAWASAKI KX 80 1998
KAWASAKI KX 85 2025
KAWASAKI KX 85 2024
KAWASAKI KX 85 2023
KAWASAKI KX 85 2022
KAWASAKI KX 85 2021
KAWASAKI KX 85 2020
KAWASAKI KX 85 2019
KAWASAKI KX 85 2018
KAWASAKI KX 85 2017
KAWASAKI KX 85 2016
KAWASAKI KX 85 2015
KAWASAKI KX 85 2014
KAWASAKI KX 85 2013
KAWASAKI KX 85 2012
KAWASAKI KX 85 2011
KAWASAKI KX 85 2010
KAWASAKI KX 85 2009
KAWASAKI KX 85 2008
KAWASAKI KX 85 2007
KAWASAKI KX 85 2006
KAWASAKI KX 85 2005
KAWASAKI KX 85 2004
KAWASAKI KX 85 2003
KAWASAKI KX 85 2002
KAWASAKI KX 85 2001
KAWASAKI KX 100 2021
KAWASAKI KX 100 2020
KAWASAKI KX 100 2019
KAWASAKI KX 100 2018
KAWASAKI KX 100 2017
KAWASAKI KX 100 2016
KAWASAKI KX 100 2015
KAWASAKI KX 100 2014
KAWASAKI KX 100 2013
KAWASAKI KX 100 2012
KAWASAKI KX 100 2011
KAWASAKI KX 100 2010
KAWASAKI KX 100 2009
KAWASAKI KX 100 2008
KAWASAKI KX 100 2007
KAWASAKI KX 100 2006
KAWASAKI KX 100 2005
KAWASAKI KX 100 2004
KAWASAKI KX 100 2003
KAWASAKI KX 100 2002
KAWASAKI KX 100 2001
KAWASAKI KX 100 2000
KAWASAKI KX 100 1999
KAWASAKI KX 100 1998
KAWASAKI KX 100 1997
KAWASAKI KX 100 1996
KAWASAKI KX 100 1995
KAWASAKI KX 112 2025
KAWASAKI KX 112 2024
KAWASAKI KX 112 2023
KAWASAKI KX 112 2022
KAWASAKI KX 250 2000
KAWASAKI KX 250 1999
KAWASAKI KX 250 1998
KAWASAKI KX 250 1997
KAWASAKI KX 250 1996
KAWASAKI KX 250 1995
KAWASAKI KX 250 1994
KAWASAKI KX 250 1993
SUZUKI RM 60 2003
SUZUKI RM 65 2005
SUZUKI RM 65 2004
SUZUKI RM 65 2003
SUZUKI RM 100 2005
SUZUKI RM 100 2004
SUZUKI RM 100 2003