Bosch 96309 Spark Plug

Bosch 96309 OE Fine Wire Double Iridium Spark Plug

Bosch 96309 is an OE-style fine wire double iridium spark plug built for stable ignition performance and extended service life. It uses a pin-to-pin electrode design to promote efficient flame-kernel growth, making it a direct-fit choice for select Lexus, Honda, and Acura applications.

Key Features

• Double iridium pin-to-pin design with an iridium-alloy firing pin and laser-welded iridium-alloy ground pin
• Fine-wire electrode layout for efficient ignition and consistent combustion
• Resistor plug with 6000 ohm resistance
• Preset 1.0 mm gap; do not gap before installation
• 14 mm thread diameter, 26.5 mm reach, 16 mm hex, flat seat
• Ceramic insulator and non-projected tip style
• OE Fine Wire Double Iridium Pin-to-Pin product line for factory-style replacement needs

Detailed Description

The Bosch OE Fine Wire Double Iridium Pin-to-Pin line is engineered for vehicles that call for a precise, long-life spark plug with OE-level electrode construction. Bosch 96309 uses iridium at the firing point and a matching iridium-alloy pin on the ground electrode to support efficient spark delivery and durable wear characteristics. That makes it a strong service part for drivers maintaining Lexus IS250, IS350, GS350, LS460, and select Honda Civic or Acura ILX applications that specify this plug design.

This spark plug is built around a flat seat, 14 mm thread, 26.5 mm reach, and preset gap, so it matches the original service specification on listed vehicles. The resistor design helps control electrical noise in modern ignition systems, while the fine-wire construction supports consistent combustion behavior over time. Bosch 96309 is a practical OE replacement for technicians and DIY owners looking for the correct spark plug for select 2006-2018 Lexus, 2012-2015 Honda Civic, and 2013-2014 Acura ILX applications.

Vehicle Fitment

• Fits 2018 Lexus IS300, N/A; do not gap, gap is preset; to 10/2017; original center electrode material is iridium and ground electrode pin material is platinum; OE Fine Wire Double Iridium Pin-to-Pin
• Fits 2018 Lexus RC300, N/A; do not gap, gap is preset; to 11/2017; original center electrode material is iridium and ground electrode pin material is platinum; OE Fine Wire Double Iridium Pin-to-Pin
• Fits 2018 Lexus RC350, N/A; do not gap, gap is preset; to 11/2017; original center electrode material is iridium and ground electrode pin material is platinum; OE Fine Wire Double Iridium Pin-to-Pin
• Fits 2016-2017 Lexus IS300, N/A; do not gap, gap is preset; original center electrode material is iridium and ground electrode pin material is platinum; OE Fine Wire Double Iridium Pin-to-Pin
• Fits 2006-2017 Lexus IS350, N/A; do not gap, gap is preset; original center electrode material is iridium and ground electrode pin material is platinum; OE Fine Wire Double Iridium Pin-to-Pin
• Fits 2007-2017 Lexus LS460, N/A; do not gap, gap is preset; original center electrode material is iridium and ground electrode pin material is platinum; OE Fine Wire Double Iridium Pin-to-Pin
• Fits 2016-2017 Lexus RC300, N/A; do not gap, gap is preset; original center electrode material is iridium and ground electrode pin material is platinum; OE Fine Wire Double Iridium Pin-to-Pin
• Fits 2015-2017 Lexus RC350, N/A; do not gap, gap is preset; original center electrode material is iridium and ground electrode pin material is platinum; OE Fine Wire Double Iridium Pin-to-Pin
• Fits 2008-2016 Lexus LS600h, N/A; do not gap, gap is preset; original center electrode material is iridium and ground electrode pin material is platinum; OE Fine Wire Double Iridium Pin-to-Pin
• Fits 2012-2015 Honda Civic, N/A; do not gap, gap is preset; with dual spark plugs; original center electrode material is iridium and ground electrode pin material is platinum; OE Fine Wire Double Iridium Pin-to-Pin
• Fits 2013-2015 Lexus GS350, N/A; do not gap, gap is preset; original center electrode material is iridium and ground electrode pin material is platinum; OE Fine Wire Double Iridium Pin-to-Pin
• Fits 2007-2011 Lexus GS350, N/A; do not gap, gap is preset; original center electrode material is iridium and ground electrode pin material is platinum; OE Fine Wire Double Iridium Pin-to-Pin
• Fits 2006-2015 Lexus IS250, N/A; do not gap, gap is preset; original center electrode material is iridium and ground electrode pin material is platinum; OE Fine Wire Double Iridium Pin-to-Pin
• Fits 2013-2014 Acura ILX, N/A; do not gap, gap is preset; with dual spark plugs; original center electrode material is iridium and ground electrode pin material is platinum; OE Fine Wire Double Iridium Pin-to-Pin
• Fits 2010-2014 Honda Insight, N/A; do not gap, gap is preset; with dual spark plugs; original center electrode material is iridium and ground electrode pin material is platinum; OE Fine Wire Double Iridium Pin-to-Pin
• Fits 2008-2014 Lexus IS F, N/A; do not gap, gap is preset; original center electrode material is iridium and ground electrode pin material is platinum; OE Fine Wire Double Iridium Pin-to-Pin
• Fits 2007-2011 Lexus GS450h, N/A; do not gap, gap is preset; original center electrode material is iridium and ground electrode pin material is platinum; OE Fine Wire Double Iridium Pin-to-Pin
• Fits 2008-2011 Lexus GS460, N/A; do not gap, gap is preset; original center electrode material is iridium and ground electrode pin material is platinum; OE Fine Wire Double Iridium Pin-to-Pin
• Fits 2006 Lexus GS300, N/A; do not gap, gap is preset; original center electrode material is iridium and ground electrode pin material is platinum; OE Fine Wire Double Iridium Pin-to-Pin

Common Issues This Part Helps Address

• Misfire concerns caused by worn spark plug electrodes
• Hard starting from degraded ignition performance
• Rough idle related to inconsistent spark delivery
• Reduced combustion efficiency from aged plugs
• Service replacement for vehicles requiring a preset-gap iridium plug

Installation Notes and Tips

Verify the engine application against the listed fitment before installation. Bosch 96309 arrives with a preset gap, so do not adjust the gap before use. Confirm the plug matches the vehicle’s original thread diameter, reach, seat type, and heat range, and follow the manufacturer’s torque specification during installation. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Quality Assurance

Bosch builds this spark plug as an OE-style replacement using iridium-alloy electrode materials and a ceramic insulator for long service life and consistent ignition performance. The Bosch 96309 is engineered to meet the original specification on listed Lexus, Honda, and Acura vehicles.