3-4 Cylinder LPG Conversion: From £799

5-6 Cylinder LPG Conversion: From £999

8 Cylinder LPG Conversion:    From £1199

We accept all major credit and debit cards.

How can we offer such low prices? Do we use cheap components and cut corners?


We keep our costs down by importing LPG kits directly from LPG kits Manufacturers and most of our LPG conversions are done in one day.

We only fit the highest quality LPG conversion components recommended by AC STAG manufacturer.

We could cut our prices further by using inferior and cheaper LPG conversion parts, however experience has taught us that in order to maintain the reliability and performance of your new LPG system over the long term this is not advisable.

We have fitted many LPG converison systems in the UK over the last 7 years. Through our experience we have selected the best LPG parts to show our commitment to excellence.

We use 2 or 3 technicians instead of 1 for every LPG conversion. Each technician is highly experienced in his field. Stringent quality control is employed and all those steps allow us to reduce the LPG conversion time - we save you time and money.

We are therefore able to provide the longest warranty period in the industry as we are absolutely confident in our workmanship, the quality and long term performance.

Last Updated on Tuesday, 28 March 2017 12:30

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About Us

We are fully authorised for AC STAG autogas systems.



We are LPG conversion specialists based in South Wales. We are authorised AC STAG LPG conversion kits suppliers and all our Staff have been trained directly by the LPG kit manufacturer - there is no better way to ensure high quality. All our LPG components are directly imported by us - no middleman, no delivery delays - we have everything in stock: LPG tanks, LPG kits and all required components are on site.





Profess Autogass has been trading since 2004. With so much experience at every stage of the build comes excellence and as a result our fully trained devoted team of LPG conversion technicians have the highest standards of workmanship coupled with a knowledge base second to none.  Through years of experience we know what LPG components to fit because of our commitment to excellence. We do a great job, well timed, not a fast job quickly.
Installing LPG systems is a highly skilled job, yes you can buy kits off the internet and install them yourselves; but we pride ourselves on converting cars which their owners rely on; short cuts and cheaper options are not our game, we stay at the top for a reason.
We take our time, use performance equipment chosen for your car and our technicians are salaried and run the garage diary themselves. If our technicians fit a part and it’s not quite right, they will remove it and start again, it’s just how we work.




Our customers travel from Scotland, Isle of Man, Isle of Wight, London, Manchester, Birmingham... from all over UK and we have a lot of customers from Germany, France, Spain - we must be doing something right...







We always keep a large stock of LPG tanks that meet all EEC regulations and are of excellent quality - we maintain an average of 1000 (yes, one thousand) tanks of all shapes and sizes are always available from stock! More about our tanks here.




Refueling at lower prices
We have on-site refueling facilities which means you can leave with a full tank of LPG (not included in conversion costs)

Last Updated on Tuesday, 28 March 2017 11:53

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