WABCO 897 121 586 4 — Cross Reference, Specification & Replacement
WABCO 897 121 586 4 is a Type 14 long stroke air brake chamber diaphragm. Viaforta part VF-14LS is a direct fabric-reinforced replacement, manufactured in Türkiye.
Also written as 8971215864
| Size | 14LS |
|---|---|
| Stroke type | Long Stroke |
| Material | Fabric-reinforced rubber compound, made in Türkiye |
| Fitment | Direct fit for Type 14 service brake chambers |
| Viaforta part no. | VF-14LS |
Dimensional data is not published. Manufacturing tolerances vary between production batches, and a fixed published figure that a shipment later disagrees with is worse than no figure at all. Fitment is confirmed by Type and stroke, and by the OEM number stamped on your chamber.
Order quantities and lead times are confirmed per order — request a quote.
What is this part?
WABCO 897 121 586 4 identifies the diaphragm fitted inside a Type 14 long stroke service brake chamber. Type 14 refers to the effective area of the diaphragm — 14 square inches — which is what determines the output force the chamber produces at a given air pressure. The long stroke designation refers to the travel available: extended-travel chambers with a deeper diaphragm profile. A diaphragm of the wrong Type or the wrong stroke will either not seal correctly or will not deliver full travel, so both figures have to match.
What does this number tell you?
WABCO builds air brake systems rather than vehicles, so 897 121 586 4 follows the chamber onto every make that is fitted with it. That is why one number here maps to several vehicle catalogues at once, and why a vehicle manufacturer's number is the narrower way to search.
The same diaphragm is catalogued by DAF as 0069086.
The vehicle list below is derived from the other manufacturer numbers that share this part, not from a WABCO application table.
Equivalent part numbers
The same diaphragm is catalogued under the following numbers by other manufacturers. Any of these can be replaced by Viaforta VF-14LS.
| Brand | OEM number |
|---|---|
| WABCO | 897 121 586 4Exact match |
| WABCO | 897 121 615 4 |
| WABCO | 897 121 585 4 |
| DAF | 0069086 |
| Mercedes-Benz | 0004233986 |
Vehicle applications
This diaphragm is catalogued for the vehicles below. Source: Autodoc.
2 vehicles
| Make | Model | Years |
|---|---|---|
| Mercedes-Benz | MK | 1987-2005 |
| Mercedes-Benz | NG | 1973-1998 |
WABCO manufacture air brake systems rather than vehicles — their numbers are catalogue references used across multiple vehicle makes.
These lists come from published aftermarket catalogues, not from the vehicle manufacturers. Confirm the Type marking and the OEM number stamped on your brake chamber before ordering — send us the number and we will confirm the match within 24 hours. Why this check matters
Viaforta replacement
Viaforta VF-14LS is manufactured in Türkiye from fabric-reinforced rubber, blended to a formulation of our own. It is supplied in Viaforta packaging and is available in trial quantities as well as full container loads.
Full product page
Specifications, complete cross-reference table, applications and FAQ for Viaforta VF-14LS.
Type 14 Brake Chamber Diaphragm, Long Stroke · VF-14LS →
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Search the full cross-reference database — 496 numbers across 52 manufacturers.
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Looking for WABCO 897 121 586 4?
Send us the quantity you need. You will get a price in USD, Incoterms and a lead time within 24 hours — and up to 10 free samples if you want to test the part first.
Free samples up to 10 pieces are available on request; you cover the shipping only.
Prices are quoted in USD, EXW or FOB Istanbul. Freight is arranged separately. Payment by bank transfer or letter of credit against a proforma invoice.