The facts.
| Brand | Öhlins |
|---|---|
| Part Number | 21653-31 |
| Category | Adjustment Housings |
| Dimension A | 1.5 mm |
| Dimension B | 23 mm |
| Thread | M46x1.5 |
| Country of Origin | Sweden |
DescriptionThe whole story▼
Adjustment housing M46x1.5/23, Öhlins part number 21653-31. Needle and seat together meter the bleed flow; damage to either changes the whole adjustment range.
Key Features
- Öhlins part number 21653-31
- Original Öhlins service part
- Thread M46x1.5
- Dimension A 1.5 mm
- Dimension B 23 mm
Function
The published figures are 1.5 mm, 23 mm. Measure the old part against them before ordering. Detent balls and springs are separate parts because they wear before the housing does. Hydraulic preload adjusters are sealed units and are replaced rather than opened. Thread size identifies where it belongs on the unit.
Original Öhlins Part
Öhlins numbers every position so a workshop can order precisely what it needs, not a whole assembly. The alternative to a service part is usually a new damper, which is why this catalogue exists. We can check the number against the Öhlins exploded view before you order — just ask. Öhlins numbers do not follow a logic you can guess — always read them from the documentation.
How to Be Sure It Fits
Part number 21653-31 is unambiguous; the description alone is not, because Öhlins uses similar wording across sizes. Öhlins states dimension a 1.5 mm, dimension b 23 mm for this number, and those figures are the deciding ones. The needle tip is the wear part: once rounded, the first few clicks stop doing anything. Öhlins specifies a defined number of clicks per adjuster so a setting is a number, not an impression.
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: 21653-31
- Category: Adjustment Housings
- Dimension A: 1.5 mm
- Dimension B: 23 mm
- Thread: M46x1.5
- Country of Origin: Sweden
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