MOREV 6-Pin AC CDI Ignition Module for GY6 50cc-150cc - Rounded 4+2 Connector, Direct-Fit Replacement

MOREV's 6-pin AC CDI ignition module is a direct-fit replacement designed to restore spark timing and ignition performance on select GY6 50cc–150cc AC-fired engines.

If your scooter, moped, go-kart or small ATV that uses a GY6-style AC ignition has developed intermittent spark, weak starting, or erratic idling, a failed CDI (capacitor discharge ignition) is a common culprit. This MOREV unit matches the rounded 6-pin 4+2 connector layout used on many 4-stroke horizontal GY6 engines, making it a practical swap when the original CDI is damaged or unreliable. Read on to confirm fit, learn what to check before buying, and see which models commonly use this configuration.

How do I know this MOREV CDI will fit my engine?

Compatibility depends on the ignition type, connector shape, pin arrangement, and physical dimensions. This module is built for AC-fired GY6 systems with the rounded 6-pin 4+2 connector — it will not work with DC CDIs or different connector shapes.

• Check your engine code: fits many 139QMB, 1P39QMB, 152QMI and 157QMJ applications.
• Verify connector: rounded 6-pin 4+2 pin layout (not rectangular DC types).
• Compare mounting hole positions and module size to ensure clearance.

Which scooters and go-karts commonly use this CDI?

This MOREV module is compatible with a range of popular small-displacement vehicles that use GY6 AC ignition systems. It covers many makes and model families but not every vehicle — always confirm visually against your existing part.

• Common scooter fits: TaoTao ATM50, Pony 50 (pre-2018), CY50, Zummer.
• Roketa examples: Maui, Sicily, Cayman series.
• Additional makes: Wolf (Islander, RX50), Jonway, Ice Bear, Peace Sports, Baja, Tank, Redcat and others listed by manufacturers using GY6 platforms.

What problems will replacing the CDI solve and what won’t it fix?

Replacing the CDI often cures issues tied directly to ignition timing and spark delivery, like poor starting, sudden shutdowns, or uneven idle. However, it won't remedy mechanical engine faults, fuel delivery issues, or electrical problems unrelated to the ignition module.

• Likely improvements: restored spark consistency, easier starts, more reliable idling.
• Not addressed: clogged carburetors, damaged stators or coils, battery/charging faults on DC systems.
• Diagnostics tip: test or inspect stator and coil continuity before replacing if unsure.

How should I verify and install the replacement CDI safely?

Before ordering, compare the connector shape and pin layout physically to your original module and review mounting points. Install with the ignition off, match wire color/functions, and secure the module away from excessive heat or moving parts.

• Turn off fuel and ignition and disconnect the battery if present.
• Match 4+2 connector pins and confirm wire colors correspond to original harness.
• Mount with supplied or original fasteners; avoid contact with exhaust or sharp edges.

Who is this for: The MOREV 6-pin AC CDI is aimed at DIY mechanics, repair shops, and owners of GY6-based scooters, mopeds, go-karts and small ATVs who need a like-for-like replacement for an AC ignition CDI. It suits anyone comfortable verifying connector types and performing basic electrical swaps, and is especially helpful when the original module shows visible damage, corrosion, or intermittent performance. If you rely on accurate fitment, compare the original CDI’s connector shape, pin positions and module dimensions before purchasing to ensure a successful replacement.