Reality: No spark plug will dramatically increase peak horsepower on a stock engine. However, the 5285 restores lost power and improves throttle response, especially in high-mileage vehicles.
While it costs more upfront than a standard copper plug, the Denso 5285 pays for itself in fuel savings and prevents the labor of frequent changes. If your owner’s manual calls for an NGK or Denso plug in the heat range 5-6 (NGK) or 16-20 (Denso), the 5285 is a premium upgrade that will not disappoint. denso 5285
Common vehicles compatible with the Denso 5285 include: Reality: No spark plug will dramatically increase peak
9.5/10 – Highly recommended for reliability and performance. Disclaimer: Always consult your vehicle’s service manual before changing spark plugs. Application fitment varies by year and engine code. denso 5285