Castrol British made quality breathing alloy clutch hydraulic reservoir cap (Lid marked; Use Only Castrol Fluid), complete with new fluid resistant sealing washer.

Note; Price is per single caps but there are a number available, Inset photo shows underside of cap with sealing washer fitted. 

Thread size 1 & 7/8 inch, overall diameter 2 inches.

See my ebay shop if you want this cap marked GIRLING.

As fitted to a wide range of vehicles; Triumph Spitfire, Triumph Dolomite, GT6, Herald Vitesse, TR7 Rover SD1, Landrover Defender and Austin Healey.

Click the link above to visit my eBay shop for more Triumph and other Classic car items.