Osculati 17.661.28 30 Micron Diesel Filter Cartridge for 17.661.37
17.661.27
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Osculati 30-Micron Cartridge
17.661.28 | For diesel separator 17.661.37
Genuine Osculati high-capacity 30-micron replacement cartridge for the water/diesel separator assembly 17.661.37. It is the spin-on service element only; the aluminium filter head, collection bowl, drain and hose fittings are not included.
Key Features
- ✔ Genuine Osculati replacement cartridge
- ✔ 30-micron filtration rating
- ✔ Specified for diesel separator 17.661.37
- ✔ 11/16in spin-on cartridge interface in the matched assembly
- ✔ Service element only for straightforward scheduled replacement
Technical Specs
| Part type | Replacement filter cartridge |
| Micron rating | 30 micron |
| Fuel application | Diesel |
| Matched assembly | Osculati 17.661.37 |
| Matched assembly thread | 11/16in |
| Cartridge part number | 17.661.28 |
| Shop variant SKU | 17.661.27 |
Compatibility / Fitment Guide
Direct fit: Osculati 17.661.37 water/diesel filter-separator. The Osculati master catalogue specifies a 30-micron element, aluminium collection bowl and 17.661.28 as the spare cartridge for that assembly.
Do not use for: Osculati 17.661.24 or 17.661.35 petrol/diesel separators, which are catalogued with the 10-micron 17.661.26 cartridge; or any non-Osculati housing unless the manufacturer explicitly confirms the same cartridge number and sealing interface.
How to verify: read the code on the existing filter body or assembly label. Order by 17.661.28, not by diameter or thread alone.
Important SKU distinction: the shop variant SKU is 17.661.27, but the supplied cartridge manufacturer number and fitment reference are 17.661.28 for assembly 17.661.37.
Part Number Cross Reference
| Osculati cartridge | 17.661.28 |
| Compatible Osculati assembly | 17.661.37 |
| 10-micron alternative (not equivalent) | 17.661.26 |
| Shop variant SKU | 17.661.27 |
17.661.26 and 17.661.28 have different filtration/application specifications and must not be treated as interchangeable solely because they share an 11/16in family interface.
Frequently Asked Questions
Is this the complete separator assembly?
No. This listing supplies one replacement cartridge only.
Does it fit Osculati 17.661.27?
The current Osculati catalogue identifies 17.661.28 as the spare for diesel assembly 17.661.37. Verify the code on your assembly before ordering.
Can it be used for petrol?
Osculati specifies this 30-micron cartridge for the diesel separator 17.661.37. Use the catalogued 10-micron system for petrol applications.
What should be checked during replacement?
Inspect the sealing face and bowl, renew any required seals, fill/prime according to the engine procedure and leak-test before operation.
Note: Dispose of the used diesel filter and contaminated fuel/water responsibly and follow the separator manufacturer's priming and bleeding procedure.
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