Roll into a 40 IDF at part throttle and the car should answer without a beat of thought, both throats drawing clean and even. The main venturi is where that character is written, and this 30mm size sets the primary fuel and airflow curve a mild, small-displacement 912 or 356 wants for crisp, unhurried response.

• Genuine EMPI 30mm main venturi for Weber 40 IDF carburetors
• Sets the primary airflow and fuel signal for the carb
• 30mm bore suits smaller-displacement, street-driven engines
• Press-fit replacement for a worn or mismatched venturi
• Sold individually; run matched sizes across both carbs

Fitment: Fits Weber 40 IDF carburetors on Porsche 912 (1965-1976), 914 (1970-1976) and 356 through 356SC (1948-1965). If you are unsure this fits your car, contact us with your year and model before ordering.

Specifications:

• Part number: 43-5607-0
• Manufacturer: EMPI
• Boxed dimensions: 2 x 2 x 2 in
• Shipping weight: 0.1 lb

Frequently Asked Questions

Does this fit my Porsche? Yes, it fits any air-cooled Porsche or VW running a Weber 40 IDF carburetor.

What is this part? The main venturi is the removable tube that meters the carb's primary airflow and fuel signal; the 30mm size favors low-end response.

What is the part number? Genuine EMPI part number 43-5607-0, sized 30mm for the Weber 40 IDF.

How does it ship? ships standard ground from our Orange, California shop

⚠ 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.