Champion 9410 Spark Plug

Champion Iridium 9410 Spark Plug

Champion Iridium 9410 is a secondary ignition spark plug built for precise spark delivery and stable combustion. It uses a fine-wire iridium center electrode with a platinum ground electrode to sharpen spark focus for consistent performance in modern Toyota, Lexus, and Nissan applications.

Key Features

• Fine-wire iridium center electrode for focused spark initiation
• Platinum ground electrode core material for durable electrode performance
• J-gap ground electrode tip design
• Pre-gapped at 0.041 in / 1.05 mm
• Resistor spark plug with non-removable nut terminal
• Flat seat design, 12 mm thread diameter, 1.043 in reach
• Champion Iridium classification for OE-style secondary ignition service

Product Details

The Champion Iridium line is built around a fine-wire iridium center electrode and platinum ground electrode construction to help maintain a sharp spark point under demanding engine conditions. Part number 9410 is a direct-fit style spark plug for a wide range of late-model Toyota and Lexus vehicles, including Toyota Camry, Corolla, Highlander, Prius, RAV4, Sienna, Venza, and Lexus ES250, ES300h, ES350, NX250, NX350h, NX450h+, and UX250h. It also cross-references Anchor 9029 for the same application.

Use Champion 9410 when you need a spark plug that matches the specified plug type REA12WMPB4 and supports precise ignition performance in compatible Toyota Prius, Toyota RAV4, and Lexus ES applications. The resistor design helps control electrical noise, while the flat seat and 12 mm thread size support proper cylinder head sealing when installed to the vehicle specification.

What It Helps Address

• Rough idle caused by worn spark plug electrodes
• Hard starting from weakened ignition output
• Misfire conditions related to plug wear or incorrect gap
• Reduced throttle response from inconsistent spark delivery
• Service replacement needs on high-mileage Toyota and Lexus engines

Installation Notes and Tips

Verify the engine’s required plug type, gap specification, and heat range before installation. This plug is pre-gapped at 0.041 in / 1.05 mm, but vehicle-specific applications listed in the fitment data may call for different gap values, such as 0.031 in, 0.032 in, 0.035 in, 0.043 in, or 0.044 in. Confirm the correct application for your exact year, make, and model before service. Use proper torque procedures for the flat-seat design and inspect ignition coils and boots during spark plug replacement.

Quality Assurance

Champion manufactures the Iridium line with fine-wire iridium and platinum electrode materials for controlled spark focus and durable service characteristics. Part number 9410 is built to meet the listed OE-style application requirements for the vehicles shown in the fitment data.

Compatible Vehicles

• Fits 2021-2022 Lexus ES250, N/A
• Fits 2019-2022 Lexus ES300h, N/A
• Fits 2022 Lexus ES350, N/A
• Fits 2022 Lexus NX250, N/A
• Fits 2022 Lexus NX350h, N/A
• Fits 2022 Lexus NX450h+, N/A
• Fits 2022 Lexus UX250h, N/A
• Fits 2019-2022 Toyota Avalon, N/A
• Fits 2018-2022 Toyota Camry, N/A
• Fits 2020-2022 Toyota Corolla, N/A
• Fits 2020-2022 Toyota Corolla, N/A
• Fits 2020-2022 Toyota Highlander, N/A
• Fits 2016-2022 Toyota Prius, N/A
• Fits 2017-2022 Toyota Prius Prime, N/A
• Fits 2019-2022 Toyota RAV4, N/A
• Fits 2021-2022 Toyota RAV4 Prime, N/A
• Fits 2021-2022 Toyota Sienna, N/A
• Fits 2022 Toyota Venza, N/A
• Fits 2013-2021 Nissan NV200, N/A
• Fits 2017-2018 Toyota Prius V, N/A
• Fits 2012-2016 Toyota Prius V, N/A
• Fits 2010-2015 Toyota Prius, N/A
• Fits 2009-2011 Nissan Versa, N/A