A stronger cam or more compression pulls fuel the smaller jets cannot supply, and the plugs will tell you so. The 1.30 main jet feeds that higher demand through a 1.30mm brass orifice; step up to it when a 1.25 still reads lean at full throttle.

• Genuine EMPI 1.30 main jet, 1.30mm 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
• Larger size for higher-demand engines
• 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: 43-5305-0
• 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 1.30 has a 1.30mm opening, a larger size for higher fuel demand.

What is the part number? Genuine EMPI part number 43-5305-0, the 1.30 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.