Öhlins Cylinder head 46 hose
02 · Data & docs

The facts.

Technical data
BrandÖhlins
Part Number21159-12
CategoryCylinder Heads
Country of OriginSweden
DescriptionThe whole story▼

Cylinder head 46 hose, Öhlins part number 21159-12. It is the part that keeps oil in and grit out, which is why it is replaced whenever the unit weeps.

Key Features

  • Original Öhlins service part
  • Öhlins part number 21159-12

Where It Sits

Öhlins publishes no separate dimension for this position, so the part number carries the identity. Corrosion inside a tube is terminal: it cannot be honed out without changing the clearance. Tubes are replaced when the bore is marked; polishing them out changes the clearance and makes it worse. Öhlins machines the head so the bushing bore is concentric with the seal — otherwise the shaft wears one side.

Genuine Service Part

An original part keeps the unit within its published specification; a near-equivalent quietly moves it. The part is identical to what Öhlins fits in production — same supplier, same specification. Send us the model and serial number of your unit and we will confirm the position before you order. We can supply the whole position from the drawing rather than the single piece if that is easier.

Getting the Number Right

If the unit is already open, compare the dimensions below with the part in your hand before ordering 21159-12. Öhlins does not publish a dimension here — go by the number and the exploded view. Tubes are replaced when the bore is marked; polishing them out changes the clearance and makes it worse. Corrosion inside a tube is terminal: it cannot be honed out without changing the clearance.

Fitting and Setup Service

Ask us about a full service: as an authorised Öhlins centre we strip, inspect, replace what is worn and set the unit back to its specification.

Specifications

  • Brand: Öhlins
  • Part Number: 21159-12
  • Category: Cylinder Heads
  • Country of Origin: Sweden
07 · Support

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