Product Details
Description
RDLN Turbo High Flow Cooling Fan; QMB / GY6
Replacement Part Details
Use this part when the original component is worn, damaged, missing, or no longer working correctly. Many scooter parts can look similar but use different sizes, plugs, brackets, thread patterns, or mounting styles, so careful comparison before purchase is recommended.
Compatibility / Fitment
Use the fitment details below to confirm this part matches your scooter before ordering.
- Engine Size: GY6
Fitment Guide: This compatibility information is based on manufacturer and supplier data. Listed models are common known applications and may not include every compatible scooter. If your scooter has multiple versions or production changes, confirm the correct match before ordering. Check photos, measurements, original part numbers, engine code, model, and related fitment information whenever possible.
Common Fitment Questions
Q: Is this for GY6 scooters?
A: This SKU is listed with GY6 engine-size fitment. Confirm exact model, year, and part style before ordering.
Additional information
| Weight | 0.25 lbs |
|---|
| Condition | New |
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Prevent destructive thermal drop, heat fade, and oil breakdown with the premium RDLN Turbo High-Flow Cooling Fan Assembly. Engineered specifically as a performance upgrade for air-cooled 4-stroke small-displacement scooter blocks, this lightweight (56g) fan utilizes an aggressive, swept-blade turbine geometry. By significantly accelerating the cubic feet per minute (CFM) of air forced through your engine's plastic cooling shrouds, it lowers cylinder head temperatures to maintain maximum combustion efficiency and stable horsepower output during hot summer idling or pinned, full-throttle urban commuting.
Advanced Thermodynamic Features
- Engineered High-Volume Pulley Sweep: Reshaped fins draw radically more cool air over the engine's cooling fins compared to flat, shallow factory impellers.
- Ultra-Lightweight 56-Gram Rotational Mass: Minimizes parasitic drag on the crankshaft flywheel taper, encouraging crisper throttle response and faster engine revving.
- Heavy-Duty Heat Resistance: Molded from structurally stable composite polymer matrices engineered to resist warping, blade deflection, and high-RPM cracking.
Comprehensive Engine Code Matrix
This fan is a universal 4-point mounting upgrade tailored to standard air-cooled engines. This upgraded cooling component directly swaps onto all air-cooled 50cc–232cc scooter, ATV, and go-kart platforms with stator-mounted cooling fans.
Common 139QM/FM-Based 50cc to 80cc Platforms
| Engine Family | Compatible Engine Codes / Stamped Casting Identifiers |
|---|---|
| 139QMB / 139QMA | 139QMA | 139QMB | 1P39QMB | 1P39QMA-2 | YN139QMB |
| Alternative Blocks | JJ1P39QMB | 139FMA-2 | BD1P39QMB | BN139QMB | 147QMD |
Common 157QM/FM-Based 125cc to 200cc Platforms
| Engine Family | Compatible Engine Codes / Stamped Casting Identifiers |
|---|---|
| GY6 Large Case | 157QMJ | 161QMK | 152QMI | 1P61QMK | 1P57QMJ |
| Alternative Blocks | YN1P57QMJ | 1P52FMI | 154FMI | JJ157QMJ | BN157QMJ | BN161QMK-A |
Technical Specifications
- Overall Diameter: 4.65 in x 4.65 in (118mm x 118mm)
- Total Fan Profile Height: 1.17 in (30mm)
- Net Weight: 56 grams
- Mounting: Standard 4-Point Stamped Flywheel Boss Pattern





