EMPI Main Jet for HPMX / IDF / IDA / DCOE Carburetors — 2.10mm calibrated brass | Porsche 914 (1970-1976) (43-5321-0)
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EMPI 2.10mm Main Jet for HPMX, IDF, IDA & DCOE Carburetors (43-5321-0)
Short answer: The EMPI 43-5321-0 is a genuine EMPI 2.10mm calibrated brass main jet, sold individually, for 40/44 HPMX, Weber 40/44/48 IDF, 48 IDA, EPC 48/51 and Dellorto DCO/DCOE carburetors. It meters fuel through the main high-speed circuit at cruise and wide-open throttle. It fits those carburetors, including the ones on the 1970-1976 Porsche 914.
Part numbers: EMPI 43-5321-0 / 4353210 · UPC 707924223347
Fitment
| Years | Vehicle | Notes |
|---|---|---|
| 1970-1976 | Porsche 914 | With one of the listed carburetors (see Specifications) |
Specifications
| Specification | Detail |
|---|---|
| Part number | EMPI 43-5321-0 |
| Part type | Carburetor main jet |
| Size | 2.10mm orifice |
| Material | Machined brass body, precision-drilled orifice |
| Carburetors | 40/44 HPMX, Weber 40/44/48 IDF, 48 IDA, EPC 48/51 and Dellorto DCO/DCOE |
| Quantity | Sold individually |
| Boxed dimensions | 2 x 1 x 1 in |
| Shipping weight | 0.024 lb |
| UPC | 707924223347 |
| Manufacturer | EMPI |
Why It Matters
A rich engine loads up and softens at the top of the tach, washing fuel down the bores. The right main jet trims the curve at cruise and wide-open throttle, and the precision-drilled orifice keeps flow repeatable.
Installation Notes
- Size up to richen a lean top end; size down to lean out a rich mixture.
Frequently Asked Questions
What size is the EMPI 43-5321-0 main jet? EMPI 43-5321-0 is a calibrated 2.10mm brass main jet, sold individually.
Does the 2.10mm main jet fit a Porsche 914? Yes. It fits 40/44 HPMX, Weber 40/44/48 IDF, 48 IDA, EPC 48/51 and Dellorto DCO/DCOE carburetors, including those on the 1970-1976 Porsche 914.
Which carburetors does this main jet fit? It fits EMPI 40/44 HPMX, Weber 40/44/48 IDF and 48 IDA, EPC 48/51, and Dellorto DCO/DCOE carburetors.
What does a main jet do on a Weber IDF or Dellorto DCOE? The main jet controls fuel flow through the carburetor's main high-speed circuit at cruise and wide-open throttle.
Should I go bigger or smaller on the main jet? Size up to richen a lean top end, or size down to lean out a rich mixture. Grab the sizes on either side to bracket your tune.
⚠ 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.
