NOW SOLD
Off to Spain
AJS Flat tank oil pump 1925 to about 1928, where the filler caps are both on the right. Big Port etc.
It’s a genuine original AJS 1920’s motorcycle hand oil pump. It has the “arm” that comes out of the top and reaches over the left side of the fuel / oil tank.
I have seen another version where the fixing flange is partly round and then “squared-off” under the arm. I am not sure which was earlier. I suspect one has a longer reach to clear the tank.
The 3 tank fixing holes are equidistant between the centres and measure 1.5″. The diameter of the pump tube that goes into the tank is 1.25″.
The “arm” has a tap fixed to it.
The top of the pump has “Concentric Mfg Co Ltd, B’ham”. This is the same as the other AJS flat tank oil pump that I had.
Condition of the AJS Flat tank oil pump
I haven’t tried it in a tank filled with oil. There seems to be plenty of spring pressure and there is a plunger inside.
The little clip works well, when required to lock the plunger down.
Other AJS parts
I have a few other AJS parts. To see the selection, please go here. At the moment, I have an AJS fuel tank that would go with this AJS Flat tank oil pump.
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Buyer notes for the AJS flat tank oil pump
Shipping is charged ON TOP of the price for the item. There are too many variables to include shipping in the checkout, so please contact me before you buy and I will give you a shipping price.

AJS Flat tank oil pump 1925 to about 1928. Suit the AJS 350 of the mid 1920’s including the AJS Big Port.
I usually ship to most destinations.
International shipping available. Let me know where you are and I will send you a price for shipping with tracking
Combined shipping available.
Viewing: Please come and check it over before you buy. It is at PE28, near St Ives in Cambridgeshire.
Collection: If you don’t want it shipped, I have plenty of space. If you can’t collect for a while, it’s not a problem. However, I will need to be paid very soon after the sale. Thanks.
Payment: Good old fashioned money on collection is preferred. I can accept payment through PayPal or by bank transfer as well. I can accept EUROS. Please ask.
Import Taxes: Please note that IMPORT DUTIES are not something I can control. If you are buying from outside the UK, there is a chance that you will have to pay import taxes. Import taxes vary from country to country. If there are charges to pay, it is the buyer’s responsibility to research the cost and pay the duties. The price that you see on my advert is for the item and not the item plus whatever taxes might be due.