PART NO.  SPL.PAGE  DESCRIPTION                                                           
AUC1123   15.D.5    Float (2) -(carburetors, 1500)
AUC1123   16.D.6    Float (2) -(carburetors, 1600)
AUC1123   TC.D.4    Float (2) -(carburetors, Twin Cam)

Brass float for SU H4 and H6 Type carburetors.

Fits all MGA 1500, 1600, MK-II with H4 carbs and MGA Twin Cam with H6 carbs, MG TC, TD, TF,Austin Healey 100, 100-6, 3000 models BN1, BN2, Early BN4 with H-Type carbs, Late BN4, BN6, BN7/BT7 MkI with Twin HD6 carbs, BJ8 with HD-Type carbs -- Jaguar early sedans with HD-6 and HD-8 carbs, XK-120, XK-140 with H6 carbs -- Morris Minor with H-type carbs -- Triumph TR2, TR3,TR4 with H4 OR H6 carbs.

	Brass	Plastic
Dia mm	47.4	49
Ht. mm	35	35.5
Wt. gm	21	20
Vol ml	62	67

Suggest use of Nitrophyl plastic replacement float, Moss Motors 370-015 Scarborough Faire D46N

See Faulty Parts report FT-116 (bad brass floats).

Since the parts are slightly different in dimensions and weight, they have a bit different density and buoyancy. An hour of calculation reveals that you may want to raise the float arm about 1/16-inch higher when you install this particular plastic float. They did a pretty good job making the plastic density similar to the brass float, so they didn't need to make the plastic one bigger.