EMPI 1.15 Main Jet for HPMX/IDF/IDA/DCOE Carburetors — 1.15mm metering orifice | Porsche 914 (1970-1976) (43-5302-0)
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EMPI 1.15 Main Jet for HPMX, IDF, IDA & DCOE Carburetors (43-5302-0)
The EMPI 43-5302-0 is a genuine EMPI 1.15 main jet with a 1.15mm calibrated brass orifice for EMPI 40/44 HPMX, Weber 40/44/48 IDF, EPC 48/51, 48 IDA and DCO/DCOE carburetors. It meters fuel at high rpm and wide-open throttle on air-cooled engines, including the 1970–1976 Porsche 914. Threaded; swaps with a flat screwdriver.
Part numbers: EMPI 43-5302-0 / 4353020 / 43 5302 0
Fitment
| Years | Vehicle | Notes |
|---|---|---|
| 1970–1976 | Porsche 914 with 40/44 HPMX, 40/44/48 IDF, 48/51, 48 IDA or DCO/DCOE | Listed fitment |
| Not specified | Air-cooled engines running those carburetors | Fits by carburetor, not by chassis |
| — | Carburetors not listed above | Not confirmed |
If you are unsure this fits your car, contact us with your year and model before ordering.
Specifications
| Spec | Detail |
|---|---|
| Brand | EMPI |
| Part number | 43-5302-0 |
| Type | Main jet (threaded) |
| Size | 1.15 |
| Material | Brass |
| Carburetors | EMPI 40/44 HPMX; Weber 40/44/48 IDF; EPC 48/51; 48 IDA; DCO/DCOE |
| Orifice | 1.15mm calibrated |
| Function | Meters fuel at high rpm and wide-open throttle |
| Boxed dimensions (as listed) | 2 x 1 x 1 in |
Why It Matters
A whisper lean at the top is enough to keep an engine from singing the last few hundred rpm. One step richer than the 1.10, the EMPI 43-5302-0 1.15 main jet trims wide-open fuel through a 1.15mm brass orifice, closing a small lean spot on a Weber or HPMX short of going to a 1.20.
Installation Notes
Threaded brass jet; it swaps with a flat screwdriver.
Use one main jet per barrel. A pair of two-barrel carburetors uses four.
Frequently Asked Questions
What carburetors does the EMPI 43-5302-0 main jet fit?
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 does a 1.15 main jet do on a Weber IDF or HPMX?
The main jet is a calibrated brass orifice that meters fuel at wide-open throttle. The 1.15 has a 1.15mm opening, one step richer than the 1.10.
How do I change a main jet on an IDF or HPMX carburetor?
It is a threaded brass jet that swaps with a flat screwdriver.
How many main jets do I need for dual carbs?
One per barrel. A pair of two-barrel carburetors uses four.
What is the EMPI part number for the 1.15 IDF/HPMX main jet?
EMPI part number 43-5302-0 (also searched as 4353020).
Prop 65 Warning
WARNING: This product can expose you to chemicals including lead, 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.
