A race-leaning 48 IDF or IDA drinks in a way street carbs never do, and the mixture wants watching at wide-open. One step richer than the 1.50, the 1.55 main jet supplies that fuel through a 1.55mm brass orifice; jet down if the plugs come back sooty.

• Genuine EMPI 1.55 main jet, 1.55mm calibrated orifice
• Fits 40/44 HPMX, 40/44/48 IDF, EPC 48/51, 48 IDA and DCO/DCOE
• Meters fuel at high rpm and wide-open throttle
• One increment richer than the 1.50
• Threaded brass jet, swaps with a flat screwdriver

Fitment: Fits EMPI 40/44 HPMX, Weber 40/44/48 IDF, EPC 48/51, 48 IDA, and DCO/DCOE carburetors on air-cooled engines, including the 1970-1976 Porsche 914. If you are unsure this fits your car, contact us with your year and model before ordering.

Specifications:

• Part number: 43-5310-0
• Manufacturer: EMPI
• Boxed dimensions: 2 x 1 x 1 in
• Shipping weight: 0.022 lb

Frequently Asked Questions

Does this fit my Porsche? It threads into EMPI 40/44 HPMX, Weber 40/44/48 IDF, EPC 48/51, 48 IDA and DCO/DCOE carburetors, including on the 1970-1976 Porsche 914.

What is this part? The main jet is a calibrated brass orifice that meters fuel at wide-open throttle; the 1.55 has a 1.55mm opening, one step richer than the 1.50.

What is the part number? Genuine EMPI part number 43-5310-0, the 1.55 main jet for HPMX/IDF/IDA/DCOE carburetors.

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.