Champion 7345 Spark Plug

Champion Double Platinum Power Spark Plug 7345

Champion Double Platinum Power spark plug 7345 is built for direct ignition service on select Subaru Legacy applications from 1991-1994. It uses platinum on both the center and ground electrodes to deliver a sharper spark focus and longer service life in demanding secondary ignition systems.

The Double Platinum Power line is engineered around Champion’s Heat-Active alloy, which helps the plug respond consistently to changing combustion temperatures. For Subaru Legacy owners looking for a precise replacement spark plug, part number 7345 matches the specified RC8PYP4 plug type and 0.041 in pre-gap.

Key Features

• Platinum fine-wire center electrode for focused spark delivery
• Platinum pad ground electrode for extended wear resistance
• Heat range 8 for the specified application
• Pre-gapped at 0.041 in (1.05 mm)
• Resistor spark plug with flat seat design
• Non-removable nut terminal and 0.625 in hex size
• Thread diameter: 14 mm; reach: 0.75 in
• Champion Double Platinum classification

Product Details

Champion 7345 is a platinum spark plug for secondary ignition service, built with a platinum center tip and platinum ground electrode core material. The design supports sharper spark focus and stable ignition performance in the specified Subaru Legacy fitment. This part cross-references Monroe Shocks & Struts (e.g., RC8PYP4, SP0RC8PYP4) for the same application. Fits 1991-1994 Subaru Legacy, N/A.

Common Uses

• Replacing worn spark plugs that cause rough idle
• Restoring ignition consistency during acceleration
• Addressing misfire conditions tied to electrode wear
• Correcting hard-start complaints related to aged plugs
• Maintaining service intervals on Subaru Legacy ignition systems

Installation Notes

Verify the plug type number RC8PYP4 before installation and confirm the specified 0.044 in gap noted for the Subaru Legacy application. Use the correct 15.880 mm / 0.625 in hex tooling and install to the vehicle manufacturer’s torque specification. Check the ignition system for coil, wire, or distributor wear if the old plugs show heavy fouling or uneven wear.

Quality Assurance

Champion’s Double Platinum Power line uses platinum electrodes and Heat-Active alloy construction to support consistent ignition performance and long service life in the listed application. Part number 7345 is built to the published specifications for the 1991-1994 Subaru Legacy fitment.