CVK Idle Jet #37 for Scooters & Mopeds
ITEM# TT-15747
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Description
CVK Idle Jet #37 for GY6 and 139QMB Engines
The CVK Idle Jet #37 is made for CVK and PWK series carburetors and works with 139QMB and GY6 engines. It controls the fuel-air blend at idle, which affects how well the engine runs. Owners frequently replace it as part of their range of carburetor jets and parts when keeping the engine running correctly.
Performance and Functionality
This idle jet helps the engine run smoothly at low speeds. Within the carburetor, it supports a steady idle, which matters most on scooters and mopeds. If the engine idles roughly or cuts out, swapping the idle jet may fix the problem.
Installation and Compatibility
Fitting a new idle jet is simple and usually means taking the carburetor off the engine. Clean the carburetor well before reinstalling it so debris does not interfere with how it runs. The CVK Idle Jet #37 suits several engine codes, so it works across a variety of scooter models.
Specifications
- Jet Size: #37
- Thread Size: M6x0.75
- Overall Length: 28mm
Fitment
This idle jet fits 139QMB-based 50cc / 80cc engines and 157QMJ-based 125cc / 150cc / 169cc engines. The specific engine codes it matches are listed below:
- 139QMB: 139QMA; 1P39QMB; 1P39QMA-2
- YN139QMB: JJ1P39QMB; 139FMA-2; BD1P39QMB
- BN139QMB: 147QMD; Other QMA models; Other QMB models
- 157QMJ: 161QMK; 152QMI; 1P61QMK
- YN1P57QMJ: 1P52FMI; 154FMI; JJ157QMJ
- 1P57QMJ: BN157QMJ; BN161QMK-A; Other QMJ, QMK, and QMI models
Shop more: Scooter Carburetors & Jets · Scooter Parts
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