EMPI 155 Main Jet for 40K/Kadron/Brosol/Solex Carburetors — 1.55mm metering orifice | Porsche 914 (1970-1976) (43-5155-7)
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EMPI 155 Main Jet (43-5155-7) for EMPI 40K, Kadron, Brosol & Solex Carburetors
The EMPI 43-5155-7 is a genuine 155 brass main jet with a 1.55mm calibrated orifice for EMPI 40K, Kadron, Brosol and Solex carburetors. It meters fuel at high rpm and wide-open throttle on air-cooled Type 1 and Type 4 engines, including the 1970-1976 Porsche 914. Sold as one threaded jet.
Part numbers: EMPI 43-5155-7 / 4351557 / 43 5155 7 · 155 main jet
Fitment
| Years | Vehicle | Notes |
|---|---|---|
| 1970–1976 | Porsche 914 | With EMPI 40K, Kadron, Brosol or Solex carburetors |
| — | Air-cooled Type 1 and Type 4 engines | With EMPI 40K, Kadron, Brosol or Solex carburetors |
If you are unsure this fits your car, contact us with your year and model before ordering.
Specifications
| Spec | Detail |
|---|---|
| Part number | 43-5155-7 |
| Manufacturer | EMPI |
| Jet size | 155 |
| Orifice | 1.55mm calibrated orifice |
| Material | Brass, threaded |
| Circuit | Meters fuel at high rpm and wide-open throttle |
| Carburetors | EMPI 40K, Kadron, Brosol and Solex |
| Place in the range | One increment richer than the 150 |
| Tool | Flat screwdriver |
| Boxed dimensions | 2 x 1 x 1 in |
| Shipping weight | 0.01 lb |
| Ships from | Orange, California |
Why It Matters
A stouter cam or a point more compression is thirstier than the book jet allows, and it shows the instant you flatten the pedal. The 155 main jet richens the wide-open circuit through a 1.55mm brass orifice, one step past the 150, and drops in with a flat screwdriver.
The 155 is one increment richer than the 150, for an engine with a stouter cam or more compression that wants more fuel at wide-open throttle.
Installation Notes
The jet is threaded brass and swaps with a flat screwdriver. Fit it in place of the existing main jet in your 40K, Kadron, Brosol or Solex carburetor.
Frequently Asked Questions
What carburetors does the EMPI 155 main jet fit?
The EMPI 43-5155-7 155 main jet fits EMPI 40K, Kadron, Brosol and Solex carburetors, used across air-cooled Type 1 and Type 4 engines.
Does the 155 main jet 43-5155-7 fit a Porsche 914?
Yes. It fits the 1970-1976 Porsche 914 running EMPI 40K, Kadron, Brosol or Solex carburetors.
What does a main jet do in a Solex or Kadron carburetor?
The main jet is a calibrated brass orifice that meters fuel at wide-open throttle.
When should I use a 155 main jet?
The 155 is one increment richer than the 150, for an engine with a stouter cam or more compression that wants more fuel at wide-open throttle.
What size orifice is a 155 main jet?
The 155 flows for a 1.55mm opening. EMPI part number 43-5155-7.
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⚠ California Proposition 65 Warning: This product can expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
