WABCO 897 120 507 4 — Cross Reference, Specification & Replacement
WABCO 897 120 507 4 is a Type 12 long stroke air brake chamber diaphragm. Viaforta part VF-12LS is a direct fabric-reinforced replacement, manufactured in Türkiye.
Also written as 8971205074
| Size | 12LS |
|---|---|
| Stroke type | Long Stroke |
| Material | Fabric-reinforced rubber compound, made in Türkiye |
| Fitment | Direct fit for Type 12 service brake chambers |
| Viaforta part no. | VF-12LS |
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 897 120 507 4 identifies the diaphragm fitted inside a Type 12 long stroke service brake chamber. Type 12 refers to the effective area of the diaphragm — 12 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 897 120 507 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 1524540 and by Cojali as 6001104.
The vehicle list below is derived from the other manufacturer numbers that share this part, not from a WABCO application table.
Vehicle applications
This part cross-references original equipment numbers from the following manufacturers, across their heavy commercial vehicle ranges.
DAF
heavy commercial vehicles
Platforms: XG · XF · CF · LF
WABCO manufacture air brake systems rather than vehicles — their numbers are catalogue references used across multiple vehicle makes.
Application data is indicative and derived from OEM cross-references. Confirm the Type marking and the OEM number stamped on your brake chamber before ordering. If you send us the number, we will confirm the match within 24 hours. Why this check matters
Viaforta replacement
Viaforta VF-12LS 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-12LS.
Type 12 Brake Chamber Diaphragm, Long Stroke · VF-12LS →
Different number?
Search the full cross-reference database — 496 numbers across 52 manufacturers.
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Looking for WABCO 897 120 507 4?
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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.