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Gaskets & Seals

SHOP MOTORCYCLE GASKETS & SEALS

Chasing an oil leak? We stock genuine OEM gaskets, oil seals and O-rings, mostly for Kawasaki, including crankcase and engine cover oil seals, water pump seals, valve stem seals, cylinder base gaskets and O-rings. Models include the KLR650, KLR250, KLX, KX, KR-1, ZXR400, Ninja 600RX, ZR550 Zephyr and KE175. Each listing shows the exact size, so you can match it to your old seal.

Replacing a base gasket usually means the barrel is off, which is a good time to check the bore and fit new pistons & rings if needed. If the leak is coming from a cracked or scraped cover rather than the seal itself, take a look at our engine covers. Planning a bigger job? Our guide to top-end vs bottom-end engine rebuilds explains what's involved, and the full range is in our engine & engine parts.

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FAQ – Motorcycle Gaskets & Seals

How do I find the right oil seal size?

Oil seals are measured as inner diameter x outer diameter x thickness in millimetres, for example 15x30x7. The size is shown in our listings, so you can match it against your old seal or your parts catalogue.

Can I reuse a gasket or O-ring?

It's not recommended. Gaskets and O-rings compress and harden once used, so they rarely seal properly a second time. Always fit new ones when you open up an engine.

What are the signs of worn valve stem seals?

Blue smoke from the exhaust on start-up or after idling, and oil consumption between services, are common signs. A compression or leak-down test can help rule out worn rings.

Should I use sealant with a new gasket?

Only where your workshop manual specifies it. Some joints need a thin bead of sealant, while others must be fitted dry. Too much sealant can block oil passages.

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