DENSO SPARK PLUG W22M-U BOX OF 10
$29.99
The DENSO Spark Plug W22M-U is a standard, non-resistor spark plug designed for small, air-cooled engines. It is a very common aftermarket replacement part for a wide range of outdoor power equipment.
Description
- Thread Size: 14mm
- Thread Reach: 9.5mm (3/8″)
- Hex Size: 19mm (3/4″)
- Heat Range: 22 (This corresponds to a relatively hot spark plug, suitable for many small engines)
- Electrode Material: Nickel
- Seat Type: Gasket (flat seat)
- Preset Gap: Typically 0.7 mm (0.028″), but this can vary and should always be confirmed with the equipment’s manual.
Features and Applications:
- Nickel Electrode: The nickel electrode provides a durable and reliable spark for consistent ignition in small engines.
- Non-Resistor Plug: Like its Champion counterpart, the W22M-U does not have an internal resistor. This makes it suitable for equipment that doesn’t have sensitive electronic components that could be affected by radio frequency interference.
- Cross-Reference: The DENSO W22M-U is a direct equivalent for several other popular spark plugs, making it a widely used replacement. Its most common equivalents are:
- Champion CJ6
- NGK BM7A
- Autolite 254
This spark plug is commonly used in:
- Chainsaws
- Lawnmowers
- Trimmers and brushcutters
- Generators
- Leaf blowers and other handheld power tools
It’s important to note that while this plug is a popular replacement, it’s always best to consult your equipment’s user manual to confirm the correct spark plug model and gap setting for your specific engine.




