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Shimano SM-BH90 Olive + Connector Insert
The Shimano SM-BH90 olive + connector insert (Y8JA98020) seals a Shimano BH90 hydraulic hose at the brake lever. Every time the hose is shortened or replaced, the lever end needs a new pair – they are single-use parts.
Why keep a few in stock?
Tight seal. The olive compresses onto the hose and seals it; the insert supports the hose end from inside. 
Single-use. Once compressed, an olive cannot seal again – a new pair is needed for every hose cut. 
For BH90 hoses. Fits the SM-BH90 hose family used on Shimano's current disc brakes. 
Genuine Shimano. Correct size and material for a leak-free connection.
How the connection works
1 – connecting bolt, screws into the brake lever; 2 – olive, compresses onto the hose and seals it; 3 – connector insert, pushed into the hose end; 4 – hydraulic hose.
The olive and the insert are single-use: fit new ones every time the hose is shortened.
Who is it for?
- Anyone shortening a BH90 hose. For example after fitting new handlebars or a new frame.
- Workshops. Setting up new bikes and brakes.
Compatibility
| Part number | Y8JA98020 |
|---|---|
| In the box | 1 olive, 1 connector insert |
| Compatible hoses | SM-BH90-SS, -SBM, -SB, -SBLS, -SBS, -JK-SS, -JK-SSR |
| Not for | SM-BH59 hoses – use the Y8H598010 set |
Frequently asked questions
Can I reuse an old olive?
No. Once compressed, the olive cannot seal again – always use a new one.
How many do I need?
One set per hose end at the lever, i.e. one per brake.
BH90 or BH59 – which do I have?
The hose type is printed on the hose. BH90 parts do not fit BH59 hoses and vice versa.
About Shimano
Shimano was founded in 1921 in Sakai, Japan, as a one-man workshop making freewheels. Today it is the world's largest maker of bicycle components, and its standards – Center Lock rotors, Hollowtech cranks, Rapidfire shifters, mineral-oil hydraulic brakes – are what most bikes are built around.
At BoodaBike we use Shimano internal gear hubs and hydraulic brakes on our own belt-drive bikes, and we stock the service parts we use in our own workshop.