Champion 7546 Spark Plug - Intake Side

Champion Double Platinum Power Spark Plug 7546

Champion Double Platinum Power spark plug 7546 is built for drivers who need consistent ignition performance and long service life. It uses platinum on both the center and ground electrodes, along with Champion’s Heat-Active alloy, to help deliver a sharper spark focus and stable combustion.

Compatible With a wide range of import and domestic applications, including Honda Civic, Hyundai Sonata, and Subaru Legacy fitments, this plug is a direct replacement for many OE-style applications. The 7546 part number is also referenced in cross-application catalogs for select vehicles that call for RC10PYPB4.

Key Features

• Platinum fine-wire center electrode for focused spark delivery
• Platinum pad ground electrode for extended service life
• Heat-Active alloy construction for steady ignition performance
• Resistor design for modern ignition systems
• Pre-gapped at 0.041 in. with a flat seat design
• 14 mm thread diameter, 0.75 in. reach, and 5/8 in. hex size

Product Details

Champion’s Double Platinum Power line is positioned for vehicles that need durable ignition components with OE-style fitment. The platinum-to-platinum electrode design helps maintain spark consistency over time, while the fine-wire center electrode supports sharper spark focus for cleaner combustion. This makes the Champion 7546 a practical choice for maintenance on vehicles such as Honda CR-Z, Kia Soul, and Audi A4 Quattro applications listed in the fitment data.

This part cross-references NGK 5542 and Autolite APP3923 for the same application.

What It Helps Address

• Hard starting caused by worn spark plug electrodes
• Misfire conditions related to weak or inconsistent spark
• Rough idle from degraded ignition performance
• Reduced throttle response from aging plugs
• Service intervals that call for platinum ignition components

Installation Notes and Tips

• Verify the plug type number RC10PYPB4 against your vehicle’s service information before installation.
• Confirm the specified gap for your application; listed fitments include gaps such as 0.044 in., 0.040 in., 0.052 in., and 0.043 in.
• Use the correct torque procedure for the cylinder head material and thread size.
• Check coil boots and ignition wires for wear before installing new plugs.
• Fitment examples include 2011-2017 Mitsubishi RVR, 2011-2016 Honda CR-Z, and 2006-2010 Hyundai Sonata.

Quality Assurance

Champion manufactures the Double Platinum Power line with platinum electrode materials and a resistor configuration for dependable ignition service. The product is engineered around OE-style specifications and listed across 379 vehicle applications from 1986 through 2017.