Denso 4008 Spark Plug U22FSR-U

For outdoor power equipment parts like spark plugs, ignition coils, and sensors to industrial solutions such as air conditioning systems and factory automation equipment, Denso delivers innovative solutions that support a better daily life. Many parts look similar, so its crucial to ensure youre choosing the right replacement for your original equipment or engine model. Not sure? Use our Parts Lookup Tool to view part diagrams and find the correct replacement.

• Spark Plug Thread Size: 14mm
• Spark Plug Reach (mm): 12.70mm
• Electrode Tip Material: Nickel
• Electrode Core Material: Copper
• Spark Plug Seat Style: Flat
• Spark plugs conduct electrical energy from the ignition coil, creating a spark that ignites the fuel.

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