Denso 3396 Spark Plug

Denso Iridium Long Life Spark Plug 3396

Denso 3396 is an Iridium Long Life spark plug built for OE-level performance, durability, and emissions control. It uses an iridium center electrode with a platinum chip ground tip to support stable ignition and consistent combustion in a wide range of import and domestic applications.

The Iridium Long Life line is designed for drivers who want a direct-fit spark plug with durable electrode materials and factory-style dimensions. This Denso spark plug 3396 is a strong match for vehicles such as Honda Accord, Honda Civic, and Jeep Compass applications where correct heat range and gap matter.

• Iridium center electrode tip for long service life
• Platinum chip ground electrode tip design
• 5000 ohm resistance for ignition system compatibility
• Pre-gapped at 1.1 mm
• Flat seat, 14 mm thread diameter, 19.00 mm reach
• 16 mm hex size for standard service tools
• Manufacturer heat range 16
• OE-style construction for emissions and durability standards

Product Details and Fitment

This spark plug is engineered with a copper core center electrode, nickel ground electrode core, and a single standard ground configuration to support reliable spark delivery. The Denso 3396 part number is also referenced by several OEM and aftermarket numbers, including Denso SKJ16CR-L11 for the same application.

Compatible With select applications including Fits 1990-2002 Honda Accord, N/A; Fits 1992-2000 Honda Civic, N/A; Fits 2007-2016 Jeep Compass, N/A; and Fits 2008-2012 Hyundai Elantra, N/A. Additional coverage includes Honda Odyssey, Acura TL, Dodge Journey, and Chrysler Sebring applications listed in the fitment data.

• Engine misfire caused by worn or eroded spark plug electrodes
• Hard starting from weak or inconsistent ignition output
• Rough idle and hesitation under acceleration
• Reduced fuel efficiency from incomplete combustion
• Emissions-related drivability issues tied to aged plugs

Installation Notes and Tips

Verify thread diameter, reach, seat type, and heat range before installation. The plug is pre-gapped at 1.1 mm, but the gap should still be checked against the vehicle service specification before use. Confirm the ignition system resistance requirement and inspect coil boots, wires, and threads during service.

Quality Assurance

Denso manufactures this spark plug to meet strict OE performance, durability, and emissions standards. The Iridium Long Life design uses durable electrode materials to support consistent ignition performance over extended service intervals.