Bosch 9613 Spark Plug

Reliable Ignition Performance for Acura, Honda, Toyota, and More

The Bosch OE Fine Wire Double Iridium spark plug (Part Number 9613) delivers consistent ignition and enhanced durability for a wide range of vehicles including Acura, Honda, Toyota, Nissan, and Lexus models. Designed to meet OE specifications, this spark plug supports efficient combustion and engine responsiveness.

• Double iridium center and ground electrode tips for improved wear resistance
• Tapered ground electrode tip design for precise spark delivery
• 6000 ohm resistor to reduce electrical noise and protect ignition components
• Flat seat type with a 14mm thread diameter and 26.5mm reach for proper fitment
• Ceramic insulator with non-projected design for reliable insulation and heat management
• Manufacturer heat range rating of 7 suitable for various 4-cycle engines
• Compatible with multiple makes and models including Toyota Camry, Honda Civic, Nissan Altima, and Lexus RX350

OE Fine Wire Double Iridium Product Line Overview

The Bosch OE Fine Wire Double Iridium line focuses on delivering spark plugs with fine wire electrodes made from durable iridium and platinum alloys. This design reduces electrode wear and ensures a stable spark, which contributes to improved fuel efficiency and lower emissions. The double iridium construction in part number 9613 enhances longevity and consistent ignition performance across a broad range of vehicles.

Technical Details and Specifications

This spark plug features a 1.1 mm pre-gap size optimized for efficient ignition. The center electrode is composed of iridium with a nickel-yttrium and copper core, while the ground electrode tip combines platinum-iridium and nickel-yttrium materials. The single ground electrode with a tapered tip design ensures precise spark formation. The 16 mm hex size allows for standard installation tools, and the flat seat type ensures a secure fit in compatible engines.

Applications and Common Issues Addressed

• Restores engine misfire issues in vehicles like the Subaru Outback and Hyundai Sonata
• Improves cold start performance for models such as the Lexus ES350 and Infiniti G35
• Reduces rough idling and hesitation in Toyota Tacoma and Nissan Frontier
• Enhances fuel efficiency and smooth acceleration in Honda Accord and Kia Optima
• Supports emission control by maintaining consistent combustion in Acura ILX and Suzuki models

Installation Notes and Tips

Ensure the spark plug gap is set to the recommended 1.1 mm before installation. Use a torque wrench to tighten the spark plug to manufacturer specifications to avoid damage to the threads or seat. The 14 mm thread diameter and 26.5 mm reach require proper alignment to prevent cross-threading. This spark plug is designed for 4-cycle engines and is not intended for outdoor power equipment.

Quality Assurance and Warranty

Bosch OE Fine Wire Double Iridium spark plugs undergo rigorous testing to meet OEM standards for durability and performance. The use of high-quality materials such as iridium and platinum ensures extended service life. While specific warranty details may vary, Bosch typically offers coverage against manufacturing defects to provide confidence in product reliability.