51736 Water Pump Inlet Pipe Assembly with flange, fits on side of timing case, now made in alloy with a 6mm flange as its more robust than the original flimsy affair, fits all models from DB2 to DB MkIII, the one shown is an original one plated

The Aston one is 99mm (3.800") from flange face to outside edge of the pipe as measured in photo 2, it appears that there are at least 2 Lagonda ones, one at 111 mm (4.375") and another at 123.8mm (4.875")

The heater pipe 12.7mm (1/2") & bypass pipe 19.5mm (3/4") take off's are always in the same place.

Supplied with slightly longer studs & a triangle gasket

Can be had without bypass hose or heater pipe take off, or any combination of it, which might be used for racing, rallying, etc