Bosch 96319 Spark Plug

Bosch OE Fine Wire Double Iridium Spark Plug

Bosch 96319 is an OE Fine Wire Double Iridium spark plug built for direct replacement in select Subaru and Mitsubishi applications. It combines a fine-wire iridium center electrode with a laser-welded ground electrode design to support consistent ignition performance and long service life.

The Bosch OE Fine Wire Double Iridium line focuses on OE-style fitment with electrode materials and construction chosen for stable spark delivery. For drivers searching for a Subaru WRX spark plug replacement or a Bosch 96319 spark plug for Subaru WRX STI applications, this plug is built around the original equipment style specified for those engines.

• Fine-wire iridium center electrode for precise spark initiation
• Laser-welded ground electrode with iridium alloy inlay
• Projected ceramic insulator design
• Resistor type plug with 6000 ohm resistance
• Preset .7 gap; do not gap before installation
• Flat seat, 14 mm thread diameter, 16 mm hex
• OE-style 4-cycle spark plug construction

Application Details

Bosch 96319 is designed for vehicles that call for an OE Fine Wire Double Iridium plug, including Subaru WRX, Subaru WRX STI, Subaru Impreza, Subaru Forester, Subaru Legacy, Subaru Outback, Subaru Tribeca, and Mitsubishi Lancer applications listed in the fitment data. It is a strong match for long-tail searches such as 2013-2019 Subaru WRX STI spark plug replacement, 2008-2014 Subaru Impreza iridium spark plug, and 2006 Mitsubishi Lancer OE replacement spark plug.

The double iridium construction uses an iridium-alloy firing pin and an iridium-inlaid ground electrode to maintain electrode integrity under demanding ignition conditions. Bosch 96319 is built to match the original center electrode material requirement noted in the fitment data and to support reliable combustion in turbocharged and performance-oriented Subaru engines.

Common Issues This Part Can Address

• Misfire caused by worn or eroded spark plug electrodes
• Hard starting from weak or inconsistent spark output
• Rough idle related to degraded ignition performance
• Reduced throttle response from aged plugs
• Service replacement for OE-style iridium spark plug intervals

Installation Notes

Follow the vehicle service specification for torque and removal procedure. The gap is preset at .7, so do not gap Bosch 96319 before installation. Verify the engine calls for a flat-seat, 14 mm thread, 16 mm hex spark plug with the listed reach and heat range before installation. This part cross-references no additional part numbers in the provided data.

Quality Assurance

Bosch OE Fine Wire Double Iridium plugs are engineered with laser-welded electrode construction and iridium-based firing surfaces to support durable ignition performance over extended service life. Bosch 96319 is built to OE-style specifications for the listed Subaru and Mitsubishi applications.