Bosch 9686 Spark Plug

Bosch OE Fine Wire Double Iridium 9686

Bosch OE Fine Wire Double Iridium spark plug 9686 is built for direct OE-style ignition performance with long service life. Its ultra-fine wire design and laser-welded electrode construction are aimed at clean, consistent spark delivery in modern Hyundai and Kia engines.

Compatible With Hyundai Tucson, Elantra GT, Santa Fe, Santa Fe XL, Azera, Elantra, Genesis Coupe, Elantra Coupe and Kia Sorento, Soul, Forte, Forte5, Sedona, Rondo, Cadenza, Forte Koup, Optima applications that call for this OE Fine Wire Double Iridium design.

Key Features

• OE Fine Wire Double Iridium design for high ignitability and extended service life
• Iridium center electrode firing pin for stable spark performance
• Laser-welded tapered ground electrode for precise flame initiation
• Iridium-alloy inlay on the ground electrode for durability
• Resistor plug with 6000 ohm resistance
• Preset 1.0 mm gap; do not gap before installation
• Flat seat, projected insulator, 12 mm thread diameter, 16 mm hex

Product Details

Bosch OE Fine Wire Double Iridium 9686 is engineered around fine-wire iridium technology to support reliable ignition under demanding operating conditions. The tapered ground electrode and iridium-alloy center electrode help promote efficient spark transfer, while the ceramic insulator and resistor design support consistent operation in modern 4-cycle engines. This part number is commonly searched for Hyundai Elantra, Tucson, Santa Fe and Kia Soul, Forte, Sorento and Sedona service applications.

This part cross-references Bosch 9686 for the same application.

Common Issues This Spark Plug Can Address

• Rough idle caused by worn or inconsistent spark plugs
• Hard starting from weakened ignition output
• Misfire codes related to plug wear or electrode erosion
• Reduced throttle response from degraded spark quality
• Service intervals shortened by conventional plug wear

Installation Notes and Tips

• Verify engine application by year, make, and model before installation.
• Do not gap this plug; the gap is preset from the factory.
• Use the correct torque procedure for the engine and cylinder head material.
• Inspect ignition coils and boots during spark plug service to avoid repeat misfire concerns.
• Confirm the flat seat and 12 mm thread specification match the original plug.

Quality Assurance

Bosch OE Fine Wire Double Iridium plugs are built to OE-style specifications for modern ignition systems and are designed around durable iridium electrode construction. Part number 9686 is intended for direct replacement service where the listed fitment and plug specifications match the vehicle requirements.

• Fits 2021 Hyundai Tucson, N/A
• Fits 2013-2020 Hyundai Elantra GT, N/A
• Fits 2014-2020 Hyundai Tucson, N/A
• Fits 2010-2019 Hyundai Santa Fe, N/A
• Fits 2019 Hyundai Santa Fe XL, N/A
• Fits 2017 Hyundai Santa Fe XL, N/A
• Fits 2011-2019 Kia Sorento, N/A
• Fits 2012-2019 Kia Soul, N/A
• Fits 2014-2018 Kia Forte, N/A
• Fits 2014-2018 Kia Forte5, N/A
• Fits 2014-2018 Kia Sedona, N/A
• Fits 2011-2012 Kia Sedona, N/A
• Fits 2012-2017 Hyundai Azera, N/A
• Fits 2014-2017 Kia Rondo, N/A
• Fits 2011-2016 Hyundai Elantra, N/A
• Fits 2010-2016 Hyundai Genesis Coupe, N/A
• Fits 2014-2016 Kia Cadenza, N/A
• Fits 2014-2016 Kia Forte Koup, N/A
• Fits 2016 Kia Optima, N/A
• Fits 2013-2014 Hyundai Elantra Coupe, N/A