CSK 50
Factory-Original Service Kit for the SU HIF4 series carburetors as fitted to a myriad of vehicles over time.
It contains, amongst other, the following parts to service two carburetors:
- 1 x LH jet, black, .090"
- 1 x RH jet, white, .090"
-
Air Filter Gaskets
- Various Inlet Manifold Gaskets
- Needle Valve & Seat sets
- Various Rubber O-Rings and seals
- Float Lid Gaskets
- Various Other Gaskets, Washers and Lock Tabs
Please note that the photo is leading for the contents as that shows exactly what is comprised in this kit.

Please note that for SU, we are sticking to the nomenclature that SU themselves also use.
Hence, this is officially called a "Service Kit" which is used to throughly service a carburettor without giving it a complete overhaul.
This kit fits, amongst others, the following vehicles:
- Austin Allegro 1500 - Tag Number FZX1302F and FZX1302R
- MG MGB - Tag Number AUD493F and AUD493R
- MG MGB - Tag Number AUD550F and AUD550R
- MG MGB - Tag Number AUD630F and AUD630R
- MG MGB - Tag Number AUD434F and AUD434R
- MG MGB - Tag Number AUD616F and AUD616R
- MG MGB - Tag Number FZX1001F and FZX1001R
- MG MGB - Tag Number FZX1229F and FZX1229R
- Norton Motorcycles - Tag Number FZX1333L and FZX1333R
This is SU Article Number: CSK50 / CSK 50
This is an authentic SU Service Kit.
* Made in Britain *