MTD Lawn & Garden Equipment Engine Intake Heater Box 951-10961

Basic information

• Part name: Lawn & garden equipment engine intake heater box
• Manufacturer: MTD
• Category: Lawn & garden equipment engine part
• Primary function: Helps warm incoming air to support smoother engine operation in cold conditions

Installation & compatibility

• Compatible models: Fits MTD and Craftsman; confirm compatibility using your models parts diagrams
• Installation difficulty: Medium; requires removing intake components and securing the heater box
• Tools required: Screwdriver, socket wrench

Additional information

This engine intake heater box mounts along the air intake path and helps raise the temperature of incoming air before it enters the engine. Part number 951-10961 supports more consistent combustion during cold starts and cool-weather operation.

If the heater box is damaged or not functioning, the engine may be hard to start in cold weather, run unevenly during warm-up, or stall shortly after starting. Cracked housings or loose connections can also reduce airflow control.

Disconnect the spark plug wire before starting installation to prevent accidental engine startup. Sheet metal edges around the intake area can be sharp, so handle the heater box carefully and wear work gloves if needed.

Lawn & garden equipment engine intake heater box 951-10961 replaces part number 751-10961.