53423 Aluminum Pinion Gear 46T/47T OP-423 - Tamiya  [53423]

This might be a few Aluminum Pinion Gears for TA-04 chassis cars.
Here is the gear that attaches to your engine.

CHARACTERISTICS: Aluminum construction

INCLUDES:

• One 46 enamel pinion gear
• One 47 enamel pinion gear
• Three 3mm set screws
• One allen key

NEEDS: Installation onto car.

SPECS:

• 47 tooth gear diameter: 18.7mm (0.74")
• Pitch: 0.4 M (48P metric)

REMARKS: possibly why these gears may focus on other 48P vehicles.