Cojali 6001104 — Cross Reference, Specification & Replacement
Cojali 6001104 is a Type 12 long stroke air brake chamber diaphragm. Viaforta part VF-12LS is a direct fabric-reinforced replacement, manufactured in Türkiye.
| 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?
Cojali 6001104 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?
6001104 is Cojali's own catalogue reference, not a vehicle manufacturer's. Aftermarket suppliers assign their own numbers to the same part, which is why the number printed on a box rarely matches the one in the service manual.
The same diaphragm is catalogued by DAF as 1524540 and by WABCO as 897 120 507 4.
Equivalent part numbers
The same diaphragm is catalogued under the following numbers by other manufacturers. Any of these can be replaced by Viaforta VF-12LS.
| Brand | OEM number |
|---|---|
| Cojali | 6001104Exact match |
| WABCO | 897 120 507 4 |
| DAF | 1524540 |
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 Cojali 6001104?
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.