Denso 3417 Spark Plug

Denso Iridium Long Life Spark Plug 3417

Denso 3417 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 Toyota, Nissan, Jeep, Ram, Chrysler, Dodge, and Infiniti applications.

Key Features

• Iridium center electrode tip material for long service life and precise spark delivery
• Platinum chip ground electrode tip design for durable ignition performance
• Copper core center electrode and nickel ground core for efficient heat transfer
• Pre-gapped at 1.1 mm for OE-style setup
• 5000 ohm resistance for ignition system compatibility
• Flat seat, 14.00 mm thread diameter, 26.50 mm reach, and 16.0 mm hex size
• Manufactured to meet strict OE performance, durability, and emissions standards

Product Details

The Denso Iridium Long Life line is engineered for drivers who want OE-recommended ignition performance with extended service intervals. Part number 3417 is a direct-style spark plug for many late-model and earlier applications, including Toyota Camry, Toyota RAV4, Jeep Grand Cherokee, Ram 1500, and Nissan Altima platforms. This plug is also cross-referenced to DENSO Auto Parts SK16HR11 for the same application.

With an iridium firing tip and platinum ground strap design, this spark plug is built to maintain consistent spark quality under daily driving, highway use, and stop-and-go conditions. The OE-focused construction supports reliable cold starts, smooth idle quality, and steady combustion across the supported vehicle range.

What It Helps Address

• Hard starting caused by worn or fouled spark plugs
• Rough idle and misfire conditions from weak ignition output
• Reduced fuel economy tied to inconsistent combustion
• Loss of throttle response from degraded spark performance
• Emissions issues related to aging secondary ignition components

Installation Notes and Tips

Verify engine application by year, make, model, and any fitment notes before installation. Body fitment includes entries such as Fits 2010-2017 Toyota Camry, N/A; Fits 2016-2022 Jeep Grand Cherokee, N/A; and Fits 2016-2022 Ram 1500, N/A. Some applications note special requirements, including two spark plugs required per cylinder or model-specific date cutoffs. Check the existing plug specification, seat type, thread reach, and gap before installation. Use proper torque procedures and inspect ignition coils and boots during service.

Quality Assurance

Denso manufactures this spark plug to OE performance, durability, and emissions standards. The Iridium Long Life design is intended to deliver dependable ignition performance in factory-style applications across the supported vehicle list, including Toyota 4Runner, Chrysler 300, and Dodge Charger fitments.