Blip the throttle and instead of a clean shot of fuel there's a hollow half-second of nothing, the flat spot every tired diaphragm eventually earns. This EMPI accelerator pump diaphragm restores the squirt a 40-44 HPMX or 44 IDF fires on tip-in, and the bog goes with it.

• Genuine EMPI accelerator pump diaphragm
• Fits 40-44 HPMX and Weber 44 IDF carburetors
• Restores the accelerator pump's fuel shot on throttle tip-in
• Cures the off-idle flat spot from a worn diaphragm
• Rubber-to-fuel construction for reliable pump action

Fitment: Fits 40-44 HPMX and Weber 44 IDF carburetors on Porsche 912 (1965-1976), 914 (1970-1976) and 356A through 356C (1955-1965). If you are unsure this fits your car, contact us with your year and model before ordering.

Specifications:

• Part number: 43-5725-0
• Manufacturer: EMPI
• Boxed dimensions: 2 x 2 x 1 in
• Shipping weight: 0.02 lb

Frequently Asked Questions

Does this fit my Porsche? Yes, it fits air-cooled Porsche and VW engines running 40-44 HPMX or Weber 44 IDF carburetors.

What is this part? The accelerator pump diaphragm flexes to squirt fuel on throttle tip-in; a worn one causes a bog or flat spot.

What is the part number? Genuine EMPI part number 43-5725-0 for 40-44 HPMX and 44 IDF carbs.

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.