This is 

Pair (2) of

Top Quality

HS4 SU Carburettors 

STANDARD FUEL/AIR MIXTURE NEEDLES

Type "ABT" - SPRING MOUNTED - BIAS - 0.090"

“Mixture Needles precisely deliver the correct amount of fuel to the engine for optimum performance”

as used on the

TRIUMPH SPITFIRE 1500 Mk V

1498cc

1976-77

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These are new Standard Mixture Needles type "ABT" which were fitted to the FZX1258F&R Carburettors. Later Carburettors used different needles. These are listed separately

After 40 years of wear, we have found that many of our customers are prefering to replace the Waxstat jets with Standard 0.090" Jets as Please be advised that all our items will be despatched within 2-3 working days. The despatch date shown on our listing is incorrect and eBay is working to resolve the error. .. This is easier to tune when the engine in hot. The existing Waxstat Jets were fitted to compensate for the Fuel and Carburettor heating up as the engine got warm. These are also listed separately 

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will suit TWO (2) 1½” SU HS4 SU Carburettors

(check the following code with the tag attached to your float chamber screw) 

 FZX1258F & FZX1258R

listing includes:  

2 x STANDARD FUEL/AIR MIXTURE NEEDLES - Type "ABT" - FIXED - 0.090" - CUD1041