Champion 9775 Spark Plug

Champion Iridium Spark Plug 9775

Champion Iridium 9775 is a direct-fit spark plug built for OE-style ignition performance in a wide range of import and domestic applications. It uses a fine-wire iridium center electrode and a platinum ground electrode to sharpen spark focus and support consistent combustion.

Compatible With vehicles such as the Toyota Tundra, Lexus GX460, and Jeep Cherokee, this plug is a practical choice for drivers replacing an OE-style iridium plug with the correct heat range and gap specification.

Key Features

• Fine-wire iridium center electrode for precise spark delivery
• Platinum ground electrode for durable secondary ignition performance
• J-gap ground electrode tip design
• Resistor-type construction for ignition system noise control
• Pre-gapped at 0.045 in. / 1.15 mm
• Flat seat design with 14 mm thread diameter and 0.625 in. hex size
• Champion Iridium line focused on OE-style replacement applications

Product Details

Champion Iridium 9775 is engineered around the needs of modern ignition systems that call for a stable, fine-focused spark. The iridium center electrode helps maintain sharp ignition characteristics, while the platinum ground electrode supports long-term electrode durability. With a manufacturer heat range of 10, this spark plug is specified for many OE-type applications that require a 0.044 in. gap and a flat-seat design. This part cross-references DILFR5A11 and REC10WMPB4 for the same application.

Common fitment includes 2010-2022 Lexus GX460, 2007-2021 Toyota Tundra, 2017-2022 Jeep Cherokee, 2018-2022 Jeep Compass, and 2015-2022 Ram ProMaster City. It also appears in applications such as 2007-2018 Lexus ES350, 2015-2021 Jeep Renegade, and 2007-2016 Toyota Sienna. Part number 9775 is used across many OE-style replacement searches for Toyota, Lexus, Jeep, Subaru, BMW, Nissan, Mitsubishi, Chrysler, Dodge, and INFINITI vehicles.

What It Helps Address

• Rough idle caused by worn spark plug electrodes
• Hard starting from weakened ignition spark
• Misfire codes related to plug wear or incorrect gap
• Reduced throttle response from inconsistent combustion
• Maintenance replacement for OE-style iridium plug applications

Installation Notes and Tips

Verify the vehicle’s required plug type, reach, thread diameter, seat style, and gap before installation. This plug is pre-gapped at 0.045 in., while many listed applications call for 0.044 in. or 0.043 in.; confirm the exact OE specification for your engine before use. Use proper spark plug removal and installation procedures to avoid thread damage and to ensure correct torque. Check the ignition system condition if misfire concerns remain after replacement.

Quality Assurance

Champion Iridium plugs are built for OE-style secondary ignition service with iridium and platinum electrode materials selected for focused spark delivery and durability. Part number 9775 is listed against a broad range of confirmed applications, including Toyota Tundra, Lexus GX460, and Jeep Cherokee fitments.