Denso 3395 Spark Plug

Denso Iridium Long Life Spark Plug 3395

Denso 3395 is an Iridium Long Life spark plug built for OE-level performance, durability, and emissions control. It uses an iridium center electrode, a platinum chip ground tip design, and a 1.1 mm pre-gap to support consistent ignition performance across a wide range of import and domestic applications.

Compatible With vehicles such as Hyundai Sonata, Kia Sorento, and Subaru Forester, this spark plug is engineered for drivers replacing worn plugs in high-mileage engines or maintaining factory ignition specifications. The Denso 3395 part number is also a direct reference point for many OE-style replacement searches.

Key Features

• Iridium center electrode tip material for stable spark performance
• Platinum chip ground electrode tip design for long service life
• 5000 ohm resistance for ignition system compatibility
• Flat seat design with 14.00 mm thread diameter and 19.00 mm reach
• 16.0 mm hex size for standard spark plug service tools
• Manufacturer heat range 16
• OE-focused construction for emissions, durability, and performance standards

Product Details

The Denso Iridium Long Life line is designed as an OE-style spark plug family for vehicles that require precise ignition characteristics and long-term electrode stability. Part number 3395 uses a copper core center electrode with an iridium tip and a nickel ground electrode core, helping maintain reliable combustion performance under everyday driving conditions. This spark plug is listed across many applications, including Fits 1999-2010 Hyundai Sonata, Fits 2003-2009 Kia Sorento, and Fits 2005-2010 Subaru Forester. This part cross-references DENSO Auto Parts SK16PR-L11 for the same application.

Common Problems It Can Help Address

• Rough idle caused by worn spark plug electrodes
• Hard starting from weakened ignition output
• Misfire conditions related to aged plugs
• Reduced fuel economy from inconsistent spark delivery
• Loss of throttle response from degraded ignition performance

Installation Notes and Tips

Verify thread diameter, reach, seat type, and heat range before installation. Confirm vehicle-specific fitment details for applications such as Fits 2006-2011 Hyundai Azera, Fits 2007-2012 Hyundai Veracruz, and Fits 2005-2011 Subaru Impreza. On engines that use two spark plugs per cylinder, follow the factory service procedure and replace plugs according to the vehicle’s ignition layout. Use the correct torque specification and inspect ignition coils, boots, and wiring during service.

Quality Assurance

Denso manufactures this spark plug to meet strict OE performance, durability, and emissions standards. The Iridium Long Life design is built for consistent ignition quality and dependable service in applications that call for OE-style replacement parts.