[Lifetime Warranty] 16620-Z8D-305 Thermowax Thermo Wax

16620-Z8D-305 Thermowax Thermo Wax

Key Features

• Controls the engine's automatic choke system
• Actuates the choke plate based on engine temperature
• Ensures proper air-fuel mixture for cold starts and warm-up
• Manufactured to original equipment manufacturer (OEM) specifications
• Genuine Honda replacement part

Replaces / Cross-Reference Part Numbers

• 16620-Z8D-305
• 16620-Z8D-842

Compatibility & Fitment

• Fits specific Honda GCV160, GCV160LAO, and GCV190LA model engines
• Commonly used on lawn mowers and other small engine equipment
• Always verify fitment by checking your equipment's original part number

When to Replace

• Engine is difficult to start or will not start when cold
• Engine starts but immediately stalls
• Engine runs rich, smokes, or floods after warming up
• Visible damage or lack of movement in the choke actuator pin

Installation Tips

• Disconnect the spark plug wire before beginning any work
• Allow the engine to cool completely before handling parts
• Note the orientation and connection of linkages before removal
• Ensure the new unit is seated correctly and linkages are reconnected properly
• After installation, check for correct choke plate movement during a warm-up cycle