Halkey Roberts Alpha End Cap part number V90131G.
The Halkey Roberts Alpha End Cap can be bought to replace a damaged or missing end cap on the original inflator.
It is specifically for the Alpha Inflator with Black body, but will also work with the older V85000.
NB. If you do chose to use this Alpha End Cap on the older V85000 inflator, it will almost certainly void your certification so you need to think very carefully before you do this to consider the implications.
Click here for information on the Alpha Inflator.
It is simple to fit. It has no expiry date. You only need to buy this part if you have broken or lost the original part. The yellow Super Bobbin sits inside the Alpha End Cap whilst in use.