DENSO 4033 Standard Spark Plug U-Groove Design

The DENSO 4033 is a standard spark plug engineered with U-Groove technology to deliver reliable ignition performance for a wide range of vehicles. This spark plug features DENSO's patented U-Groove ground electrode design that creates a larger, more concentrated spark for improved ignitability and more complete fuel combustion.

Key Features:

• U-Groove ground electrode design enhances spark concentration and flame propagation
• Copper core center electrode for superior heat dissipation and thermal conductivity
• Nickel-plated housing resists corrosion and seizing in cylinder heads
• Trivalent metal plating provides anti-corrosion and anti-seizing properties
• Improves engine efficiency, throttle response, and fuel economy
• OEM-quality construction from a leading original equipment manufacturer

DENSO standard spark plugs provide dependable performance and are designed to meet or exceed original equipment specifications. The U-Groove design creates better flame kernel formation compared to conventional spark plugs, resulting in smoother engine operation and reduced emissions.