Shopping Cart

The cart is empty

For rocker and oil pressure gauge pipes click here.

Ariels did not usually change parts without a good reason but they did when it came to petrol tanks. After all, we all thought that when we saw a new paint design the whole bike must be totally different from last year’s model and rushed out to buy one, didn't we?

There is not enough room here to go into all the styles of petrol tank in detail, but briefly: -

1932-50 with triangular instrument panel and enamel badges. The W/NG omitted the panel and most were without the badges. Up to 1946 the speedometer cable entered the tank from the rear (PA type of speedometer); 1947-50 the cable entered the tank directly below the speedometer (Chronometric speedometer). For a further discussion of speedometer types etc., see section 28.
1951-53 plain tank with enamel badges and some with oil pressure gauge. Chrome plating dropped from February 1951 due to nickel shortage caused by the war in Korea as stipulated by The Nickel Prohibited Uses (Ministry of Supply) Order No 1048.
1954-55 (and up to 1958 Square Four) with 2 chrome flutes and round plastic badges except for the VB plunger and rigid versions which have flutes and enamel badges a tank that has confused many people over the years! The SQ4 gained the small filler cap in 1956.
1956 (not SQ 4) has detachable flutes, a small filler cap and chrome badge surrounds
1957-58 (not SQ 4) centre bolt fixing, large chrome centre strip and chrome badge surrounds.

In general, on pre-swinging arm bikes the 250 and 350 models have a small tank without a recess for the nose of the saddle, the larger singles use the same shape but with a recess for the nose of the saddle and the Square Four has a much larger tank altogether, whilst the 500 twin uses a tank that falls between the last two.

Petrol Tanks

We now have a very wide range of new petrol tanks, which although made in India are of very good quality and are usually supplied chromed and ready for paint, when applicable; they are carefully inspected before being put into stock and any remedial work carried out. If it is not possible to correct a problem you will be notified so that you know what you are getting. In order to reduce costs the panel tanks are supplied with 2 tubes for the speedometer cable to fit all years and are supplied without any fittings. Regrettably supply is somewhat erratic. The chrome is finished to a high standard but is not as durable as it could be; if kept in a dry garage with a coating of polish it will survive for a very long time but if the bike is kept outside or neglected, like mine, the chrome will not last.

Part No.





Panel tank, foot change, usually chrome plated 250/350 1934-50


Petrol tank, plain, no badge bars, not chromed W/NG 1940-45


Petrol tank, not chromed NH 1951-53


Petrol tank, fluted, usually chrome plated S’arm 1954-55


Panel tank, foot change, usually chrome plated VH/VB/4F 1934-50


Petrol tank, not chromed, usually chrome plated VH/VB 1951-53


Petrol tank, centre bolt type, not chromed S’arm 1957-58


Panel tank, suitable for both speedometer types, usually chrome plated 4G/MK I 1937-50


Petrol tank, with pressure gauge hole, not chromed MK I 1951-52


Petrol tank, fluted, enamel badges, not chromed MK II 1953


Petrol tank, fluted, large cap, plastic badges, usually chrome plated MK II 1954-55


Petrol tank, fluted, small cap, usually chrome plated MK II 1956-58


Part No.






Chrome centre strip screw 2 S/arm 1957-58


Chrome centre strip 1 S/arm 1957-58


Hand change gate, 4 speed, un-plated 1 All 1932-34


Chrome centre strip spire nut for 053 screw 2 S/arm 1957-58


Tank sealant, 425 ml. Enough for lining a 4 gallon rusty or pin holed tanks, works well, supplied with instructions and will resist ethanol which makes most coatings sticky. Also works on plastic tanks


Tank sealant remover, For removing old tank sealer that is not ethanol proof and gone all sticky, works well, supplied with instructions. Will remove sealer from plastic tanks and the tank itself if not careful!


Millers VSP Petrol additive
reduces coking up of inlet valves
Prevents fuel system corrosion and helps to protect components
Combats the adverse effects of ethanol in fuel
Carburettor anti-icing formula
Prevents valve seat recession when used with unhardened valve seats
Contains anti oxidant to improve fuel life
Joomla SEF URLs by Artio