Öhlins Seal head 43.5Öhlins Seal head 43.5
02 · Data & docs

The facts.

Technical data
BrandÖhlins
Part Number21670-04
CategorySeal Heads
Country of OriginSweden
DescriptionThe whole story▼

Seal head 43.5, Öhlins part number 21670-04. Öhlins uses seals with a spring-loaded lip so they follow the shaft as it wears.

Key Features

  • Öhlins part number 21670-04
  • Original Öhlins service part

What It Is

This position is identified by its number rather than by a dimension. Öhlins builds the head so the dust seal takes the grit before it reaches the oil seal. A seal head combines the oil seal, the dust seal and the shaft bushing in one serviceable assembly. Öhlins specifies seal compounds for temperature stability rather than for the lowest unit cost.

Genuine Service Part

An original part keeps the unit within its published specification; a near-equivalent quietly moves it. Öhlins lists this part under its own number in the service catalogue so a workshop can order exactly what it needs. Order by part number — descriptions repeat across sizes, numbers do not. If you are between two sizes, send us the measurement and we will check it against the catalogue.

How to Be Sure It Fits

Order under 21670-04. Where several sizes share a description, only the number separates them. Öhlins does not publish a dimension here — go by the number and the exploded view. Öhlins recommends replacing seals whenever the unit is opened, not only when it leaks. O-ring sizes are given as inner diameter and cross-section, and both have to match — a close size is not a match.

Fitting and Setup Service

We are an authorised Öhlins service centre, so you do not have to source the tools and the nitrogen: send us the damper and we rebuild it with the correct parts and the correct setting.

Specifications

  • Brand: Öhlins
  • Part Number: 21670-04
  • Category: Seal Heads
  • Country of Origin: Sweden
07 · Support

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08 · Paddock

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