Öhlins Seal head assy 14/36
02 · Data & docs

The facts.

Technical data
BrandÖhlins
Part Number21025-09
CategorySeal Heads
Inner Diameter14 mm
Outer Diameter36 mm
Country of OriginSweden
DescriptionThe whole story▼

Seal head assy 14/36, Öhlins part number 21025-09. Replacing the head as a unit is usually faster and more reliable than fitting the seals individually.

Key Features

  • Original Öhlins service part
  • Öhlins part number 21025-09
  • Inner Diameter 14 mm
  • Outer Diameter 36 mm

Function

The published figures are 14 mm, 36 mm. Measure the old part against them before ordering. The bushing inside carries the side load so the seal only has to seal. Assembly grease matters — the wrong compound swells the seal and it fails early. Head diameter and thread are specific to the tube it closes.

Why the Original

Öhlins manufactures service parts on the same lines as production parts — there is no second quality. Suspension is one of the few areas where the original part is genuinely the cheaper decision. The Öhlins exploded view names the number for each position; we can look it up if you do not have it. Service parts are supplied per piece unless the description says otherwise.

Identifying the Right Part

If the unit is already open, compare the dimensions below with the part in your hand before ordering 21025-09. inner diameter 14 mm, outer diameter 36 mm is what distinguishes this number from its neighbours in the range. Assembly grease matters — the wrong compound swells the seal and it fails early. Öhlins uses seals with a spring-loaded lip so they follow the shaft as it wears.

Fitting and Setup Service

Fitting service parts means opening a pressurised unit. As an authorised Öhlins service centre we do that here, with the right tools and a dyno check afterwards — just ask.

Specifications

  • Brand: Öhlins
  • Part Number: 21025-09
  • Category: Seal Heads
  • Inner Diameter: 14 mm
  • Outer Diameter: 36 mm
  • Country of Origin: Sweden
07 · Support

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