DENSO Spark Plug

DENSO spark plugs are engineered to deliver reliable ignition, smooth engine starts, and consistent combustion. They are a common choice for replacement spark plugs because DENSO is an original equipment supplier to many automakers. This line includes nickel spark plugs, resistor spark plugs, and U-groove spark plugs. Some versions also use a multi-ground electrode design.

Key Features:

• U-groove technology: Many plugs in this line have a U-shaped groove in the ground electrode. The groove helps the spark reach the air-fuel mixture and supports efficient ignition.
• Nickel-alloy electrodes: Nickel construction gives dependable performance and durability in standard replacement use.
• Resistor design: Resistor plugs help suppress radio-frequency interference that can disrupt onboard electronics and audio equipment.
• Multi-ground electrode options: Some variants have several ground electrodes, which spread electrode wear and give the spark more than one path.
• Quality construction: Each plug is built to precise tolerances to support consistent firing and dependable starting.

Replacing worn spark plugs can help restore smooth idle, throttle response, and fuel efficiency. Choose the individual variant that matches your application's required plug specification.