EMPI size 137.5 main fuel jet for 40K and Kadron carburetors
Alternate view of the EMPI 137.5 main jet
Another angle of the EMPI 137.5 main fuel jet
Additional photo of the EMPI 137.5 Brosol-Solex main jet
Product photo of the EMPI 137.5 intermediate main jet
EMPI size 137.5 main fuel jet for 40K and Kadron carburetors
Alternate view of the EMPI 137.5 main jet
Another angle of the EMPI 137.5 main fuel jet
Additional photo of the EMPI 137.5 Brosol-Solex main jet
Product photo of the EMPI 137.5 intermediate main jet

EMPI 137.5 Main Fuel Jet for 40K & Kadron Carburetors

SKU: 43-5137-7

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Product details

The 137.5 calibration is an intermediate main-fuel setting between the 135 and 140 jets. It fits 40K and Kadron-style carburetors. It is useful for a defined tuning step when mixture testing calls for a change smaller than those two sizes.

Technical Details

  • Part number: 43-5137-7
  • Calibration: 137.5
  • Circuit: Main fuel
  • Sold individually

Fitment & Compatibility

Match the installed EMPI 40K, Kadron, or Brosol-Solex carburetor and the jet pattern. Record the previous size and verify the mixture after the change. This is a main jet, not an idle jet or an air-correction part.