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Product details
EMPI's 43-5419-0 is a 1.90 main-circuit air corrector for PMO Induction carburetors, Weber IDF, DCOE, and 48 IDA carburetors, and the EMPI HPMX and EPC 48/51, sold one jet at a time. EMPI includes two of these 1.90s with each EPC 48 and EPC 51 carburetor in its dual kits, along with 1.50 main jets and .65 idle jets, as a baseline for custom jetting. Those carburetors leave EMPI with 1.20 air correctors installed, so the 1.90 is the much leaner alternative.
The jet sits above the emulsion tube, and its opening sets how much air enters the tube as rpm rises. You need one per barrel, so two for a single two-barrel carburetor, four for a dual-carburetor VW, and six for a pair of triple-throat PMOs. Note that 43-5443-0 is also a 1.90, but it belongs to EMPI's EPC and DGV series.
Technical Details
- Manufacturer: EMPI
- Manufacturer part number: 43-5419-0
- Type: main-circuit air correction jet (77401-type)
- Size: 1.90
- UPC: 707924223743
- Sold as: each
- Also fits: PMO Induction carburetors
Fitment & Compatibility
Fits PMO Induction carburetors for Porsche 911 engines from 2.0 to 3.6 liters and 40/44 HPMX, 40/44/48 IDF, EPC 48/51, 48 IDA, and DCOE carburetors. EMPI's dual EPC 48/51 kits are sold for VW Type 1 engines.
Common Questions
How many 1.90s for dual 48 EPCs?
Four, one for each barrel. EMPI's dual EPC kits already include two per carburetor.
Will a 1.90 richen or lean my engine compared with a 1.80?
It leans the high-rpm mixture by two size steps.
