EMPI 1.5mm Needle Valve & Seat - 40/44 HPMX & 40/44/48 IDF | Porsche 914 1970-1976 (43-5366-0)
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EMPI 1.5mm Needle Valve & Seat — 40/44 HPMX & 40/44/48 IDF (Porsche 914 1970–1976, 43-5366-0)
Short answer: The EMPI 43-5366-0 is a genuine EMPI 1.5mm needle valve and seat assembly for EMPI 40/44 HPMX and 40/44/48 IDF carburetors, including those on the 1970–1976 Porsche 914 and air-cooled VW Beetle, Karmann Ghia, Type 3 and Bus engines. It controls fuel flow into the float bowl so the float holds a steady fuel level, and it directly replaces a worn or wrong-sized valve.
Part numbers: EMPI 43-5366-0 / 4353660 · 1.5mm needle valve and seat
Vehicle Fitment
| Years | Vehicle | Notes |
|---|---|---|
| 1970–1976 | Porsche 914 | With EMPI 40/44 HPMX or 40/44/48 IDF carburetors |
| Carburetor-dependent | Air-cooled VW Beetle, Karmann Ghia, Type 3 and Bus | Same 40/44 HPMX and 40/44/48 IDF carburetors |
Specifications
| Specification | Detail |
|---|---|
| Part number | 43-5366-0 |
| Manufacturer | EMPI |
| Seat size | 1.5mm |
| Type | Needle valve and seat assembly |
| Carburetors | EMPI 40/44 HPMX, 40/44/48 IDF (dual-carb setups) |
| Boxed dimensions (listed) | 1 x 1 x 2 in |
| Shipping weight | 0.03 lb |
Why It Matters
Fuel weeping past the top of the bowl, or a float level that wanders under demand, traces to a tired needle and seat. The 1.5mm seat sizes the bowl inlet to match fuel demand, and the larger seat feeds high-demand, high-rpm engine builds.
Installation Notes
- Direct replacement for a worn or wrong-sized needle valve and seat.
- If you are unsure this fits your car, contact us with your year and model before ordering.
Frequently Asked Questions
- What does a needle valve and seat do in a Weber IDF? The needle valve and seat regulate fuel entering the float bowl, which sets your fuel level. This 1.5mm assembly sizes the inlet to match your fuel demand and stop flooding or starvation.
- Will the EMPI 43-5366-0 fit my Porsche 914? Yes, if it runs EMPI 40/44 HPMX or 40/44/48 IDF carburetors. It fits those carbs on the 1970–1976 Porsche 914 and air-cooled VW Beetle, Karmann Ghia, Type 3 and Bus engines.
- Why is my IDF carburetor flooding or leaking fuel from the bowl? Fuel weeping past the top of the bowl, or a wandering float level, usually traces to a tired needle and seat. Replacing it with a fresh assembly restores a steady fuel level.
- When do I need a 1.5mm needle and seat? The larger 1.5mm seat feeds high-demand, high-rpm engine builds running 40/44 HPMX or 40/44/48 IDF dual-carb setups.
- What is the part number for the EMPI 1.5mm needle valve? EMPI part number 43-5366-0, a 1.5mm needle valve and seat 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.
