Cvk Pilot Jet (# 43) for Scooters & Mopeds
ITEM# TT-26401
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Description
Cvk Pilot Jet (#43) for Genuine Buddy, 139QMB, and GY6 Scooters
The Cvk Pilot Jet (#43) is a key tuning component for carburetors on a range of scooters and mopeds. It is designed for Genuine Buddy 125/150 models and for engines built with 139QMB and GY6 configurations. As one of the essential carburetor jets and parts, it has a noticeable effect on how your vehicle performs. Getting the jetting right helps your scooter run smoothly, since this piece helps set the correct air-fuel balance for steady engine operation.
Component Details
This pilot jet uses a round Keihin-style body, a layout common across many scooter carburetors. Its overall length is 28mm and its thread size is M6x0.75. Selecting the correct jet matters for keeping the engine running well, and this model is suited to compatible carburetors.
When to Consider Replacement
Signs such as slow acceleration or uneven idle can point to a problem with the pilot jet, so it is worth checking it. Changing the jetting may solve these symptoms, though it usually takes some trial and adjustment. Jetting reference guides can help you work through the changes needed to improve how your scooter runs.
Specifications
- Size: M6x0.75 Thread
- Overall Length: 28mm
- Fits: GY6-type 50cc to 169cc engines (139QMB, 157QMJ families) with CVK or PWK carburetors
Fitment
Fits:
- Buddy 125 and 150 (CVK or PWK carburetor)
- 139QMB-based 50cc and 80cc engines (engine codes 139QMA, 139QMB, 1P39QMB, 1P39QMA-2, YN139QMB, JJ1P39QMB, 139FMA-2, BD1P39QMB, BN139QMB, 147QMD, other QMA and QMB models)
- 157QMJ-based 125cc, 150cc and 169cc engines (engine codes 157QMJ, 161QMK, 152QMI, 1P61QMK, YN1P57QMJ, 1P52FMI, 154FMI, JJ157QMJ, 1P57QMJ, BN157QMJ, BN161QMK-A, other QMJ, QMK and QMI models)
How to choose: Compare the engine code stamped on your engine case with the codes listed above, and confirm you have a CVK or PWK carburetor. Finding the best jet setting usually takes some trial and error.
Shop more: Scooter Carburetors & Jets · Scooter Parts
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