Genuine Weber carburetor parts - en - USD IDLE JET 40-45-50-55-60-65-70-75-80-85-90-95-100 for WEBER IDF, DCNF, DCA #74405 - en - USD

IDLE JET 40-45-50-55-60-65-70-75-80-85-90-95-100 for WEBER IDF, DCNF, DCA #74405

$ 4.6

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Part number: 74405

Made in: EU

Compatible with:

Family: WEBER

Family: IMB

24 IMB 1-100 - pn: 41160.005 (1 pc)

24 IMB 100 - pn: 41160.005 (1 pc)

28 IMB - pn: 41160.005 (1 pc)

28 IMB 3-100 - pn: 74405.045 (1 pc)

28 IMB 4-250 - pn: 74405.045 (1 pc)

28 IMB 5-250 - pn: 74405.050 (1 pc)

Family: DM

28-36 DM 2 - pn: 41160.005 (2 pcs)

28-36 DM A4 - pn: 41160.005 (2 pcs)

28-36 DM A5 - pn: 41160.005 (2 pcs)

Family: DCA

36 DCA 1-102 - pn: 74405.040 (2 pcs)

36 DCA 101A - pn: 74405.040 (2 pcs)

36 DCA 102 - pn: 74405.040 (2 pcs)

36 DCA 2-101A - pn: 74405.040 (2 pcs)

36 DCA 2-102 - pn: 74405.040 (2 pcs)

36 DCA 3-102 - pn: 74405.040 (2 pcs)

36 DCA 4-100 - pn: 74405.040 (2 pcs)

36 DCA 5-250 - pn: 74405.045 (2 pcs)

36 DCA 6-100 - pn: 74405.040 (2 pcs)

36 DCA 7-250 - pn: 74405.045 (2 pcs)

Family: DCNF

36 DCNF 15 - pn: 41160.005 (2 pcs)

36 DCNF 17-18 - pn: 41160.005 (2 pcs)

36 DCNF 17-18- - pn: 41160.005 (2 pcs)

36 DCNF 21 - pn: 41160.005 (2 pcs)

36 DCNF 24 - pn: 41160.005 (2 pcs)

36 DCNF 25 - pn: 41160.005 (2 pcs)

36 DCNF 33-34 - pn: 41160.005 (2 pcs)

36 DCNF 49-50-100 - pn: 74405.045 (2 pcs)

36 DCNF 7-8 - pn: 41160.005 (2 pcs)

40 DCNF 12 - pn: 41160.005 (2 pcs)

40 DCNF 13 - pn: 41160.005 (2 pcs)

40 DCNF 22 - pn: 41160.005 (2 pcs)

40 DCNF 23 - pn: 41160.005 (2 pcs)

40 DCNF 3 - pn: 41160.005 (2 pcs)

40 DCNF 35-36-37-38 - pn: 41160.005 (2 pcs)

40 DCNF 57-58-59-60-150 - pn: 74405.050 (2 pcs)

40 DCNF 6 - pn: 41160.005 (2 pcs)

40 DCNF 64-65-66-67 - pn: 74405.055 (2 pcs)

40 DCNF 72-73-74-75 - pn: 74405.055 (2 pcs)

40 DCNF 72-73-74-75-100 - pn: 74405.055 (4 pcs)

40 DCNF 99-100-250 - pn: 74405.055 (2 pcs)

42 DCNF 16-2 - pn: 41160.005 (2 pcs)

42 DCNF 2 - pn: 41160.005 (2 pcs)

42 DCNF 26-2 - pn: 41160.005 (2 pcs)

42 DCNF 27 - pn: 41160.005 (2 pcs)

42 DCNF 30 - pn: 41160.005 (2 pcs)

42 DCNF 31-32 - pn: 41160.005 (2 pcs)

42 DCNF 5 - pn: 41160.005 (2 pcs)

42 DCNF 68 - pn: 74405.060 (2 pcs)

42 DCNF 78 - pn: 74405.050 (2 pcs)

42 DCNF 79-150 - pn: 74405.055 (2 pcs)

42 DCNF 90-150 - pn: 74405.055 (2 pcs)

42 DCNF 91-150 - pn: 74405.060 (2 pcs)

44 DCNF 69-69-1 - pn: 74405.065 (2 pcs)

Family: DCNFA

36 DCNFA 49-50-150 - pn: 74405.045 (2 pcs)

Family: DCNV

36 DCNV 100 - pn: 41160.005 (2 pcs)

36 DCNV 2-100 - pn: 74405.040 (2 pcs)

36 DCNV 4-100 - pn: 74405.040 (2 pcs)

36 DCNV 5-100 - pn: 74405.040 (2 pcs)

36 DCNV 6-100 - pn: 74405.040 (2 pcs)

Family: DCNVA

36 DCNVA 1-100 - pn: 74405.040 (2 pcs)

36 DCNVA 10-100 - pn: 74405.040 (2 pcs)

36 DCNVA 11-100 - pn: 74405.040 (2 pcs)

36 DCNVA 12-100 - pn: 74405.040 (2 pcs)

36 DCNVA 17-100 - pn: 74405.045 (2 pcs)

36 DCNVA 18-100 - pn: 74405.040 (2 pcs)

36 DCNVA 2-100 - pn: 74405.040 (2 pcs)

36 DCNVA 5-100 - pn: 74405.040 (2 pcs)

36 DCNVA 6-200 - pn: 74405.040 (2 pcs)

Family: DCNVH

36 DCNVH -100 - pn: 74405.040 (2 pcs)

36 DCNVH 1-100 - pn: 74405.040 (2 pcs)

36 DCNVH 17-100 - pn: 74405.040 (2 pcs)

36 DCNVH 24-100 - pn: 74405.060 (2 pcs)

36 DCNVH 25-100 - pn: 74405.050 (2 pcs)

36 DCNVH 26-100 - pn: 74405.050 (2 pcs)

36 DCNVH 5-100 - pn: 74405.040 (2 pcs)

36 DCNVH 5-101 - pn: 74405.040 (2 pcs)

36 DCNVH 7-100 - pn: 74405.040 (2 pcs)

36 DCNVH 7-101 - pn: 74405.040 (2 pcs)

36 DCNVH 8-100 - pn: 74405.040 (2 pcs)

36 DCNVH 8-102 - pn: 74405.040 (2 pcs)

Family: IDF

40 IDF 1 - pn: 41160.005 (2 pcs)

40 IDF 10-11 - pn: 41160.005 (2 pcs)

40 IDF 13-15 - pn: 41160.005 (2 pcs)

40 IDF 13-15- - pn: 41160.005 (2 pcs)

40 IDF 14 - pn: 41160.005 (2 pcs)

40 IDF 22-23-24-25 - pn: 41160.005 (2 pcs)

40 IDF 28-29 - pn: 41160.005 (2 pcs)

40 IDF 60 - pn: 74405.050 (2 pcs)

44 IDF 20-21 - pn: 41160.005 (2 pcs)

44 IDF 26-27 - pn: 41160.005 (2 pcs)

44 IDF 38-39 - pn: 74405.050 (2 pcs)

44 IDF 40-41 - pn: 74405.055 (2 pcs)

44 IDF 61 - pn: 74405.050 (2 pcs)

48 IDF 3-150 - pn: 74405.055 (2 pcs)

48 IDF 6 - pn: 74405.055 (2 pcs)

Weber Idle Jet 40–100 for IDF, DCNF, 28/36, DM-DMA, DCA, DCNFA and DCNV – MPN 74405

This idle jet meters fuel through the carburetor’s idle circuit during closed-throttle operation and contributes to the transition into the progression circuit as the throttle begins to open. Correct idle-jet selection helps establish a stable low-speed mixture and consistent transient response. An incorrect size can contribute to lean or rich idle behavior, hesitation during initial throttle opening, difficult mixture adjustment, or poor off-idle running.

Available sizes: 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95 and 100. Select the required calibration for the carburetor and engine combination. Idle-jet changes should be evaluated together with mixture-screw adjustment, fuel level control, air correction, and the condition of the carburetor’s passages and seals.

This MPN 74405 idle jet is intended for Weber carburetors and applications using IDF, DCNF, 28/36, DM-DMA, DCA, DCNFA and DCNV carburetor families. Confirm the required size before purchase and provide the requested jet size.

This replacement part is suitable for carburetor service and restoration work where the original component is worn, damaged, or missing.

Reference/MPN: 74405.

Technical role: MPN 74405 is a Weber idle jet that meters fuel in the idle circuit and supports the transition into the progression circuit.
Service relevance: The available 40–100 calibrations can affect low-speed mixture, idle stability, initial-throttle response, and mixture-screw adjustment.

What Is Included

One Weber idle jet in the requested size: 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95 or 100
Made in EU.

Important Fitment Note

Verify the carburetor family, the required idle-jet size, and the MPN or marking before ordering. Check the jet’s geometry, thread/interface, seating arrangement, and engagement depth against the carburetor and the removed jet. Compare the replacement directly with the original part, particularly if the carburetor has been modified or the model designation is uncertain.

Do not select the size from engine displacement alone; confirm the existing calibration and the symptoms being corrected before changing the idle circuit.

What you see is what you get

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