Crack the throttle from idle and a healthy engine should take it clean, not stumble on a dry gulp of air, and that hesitation is the pump shot. This genuine EMPI 0.50 accelerator pump jet meters the squirt of fuel on tip-in for 40/44 HPMX and 40/44/48 IDF carbs.

• Genuine EMPI 0.50 accelerator pump jet, sold individually
• Meters the pump shot that covers throttle tip-in
• Sized for 40/44 HPMX and 40/44/48 IDF dual carbs
• Step up to kill hesitation, step down to cut a rich bog
• Direct-fit brass jet for a clean swap

Fitment: Fits EMPI 40/44 HPMX and 40/44/48 IDF carburetors on Porsche 356, 912 and 1970-1976 914 and air-cooled VW Beetle, Karmann Ghia and Bus applications. If you are unsure this fits your car, contact us with your year and model before ordering.

Specifications:

• Part number: 43-5389-0
• Manufacturer: EMPI
• Boxed dimensions: 2 x 1 x 1 in
• Shipping weight: 0.01 lb

Frequently Asked Questions

Does this fit my Porsche? It fits EMPI 40/44 HPMX and 40/44/48 IDF carburetors, including on the Porsche 356, 912 and 914.

What is this part? The accelerator pump jet, or squirter, delivers the shot of fuel that covers throttle tip-in. This 0.50 jet tunes that pump shot to kill off-idle stumble and flat spots.

What is the part number? EMPI part number 43-5389-0, a 0.50 accelerator pump jet for 40/44 HPMX and 40/44/48 IDF 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.