Walker 924-1040 Spark Plug Wire Set

Walker ThunderCore PRO Spark Plug Wire Set

Walker ThunderCore PRO spark plug wire set 924-1040 is built for ignition service on select Mazda RX-7 models from 1979-1985. It is manufactured in the USA in an ISO9001 certified facility and built to meet or exceed OEM specifications and test requirements.

For Mazda RX-7 ignition wire replacement, this part number 924-1040 uses hi-temp OE-quality silicone boots and tips, stainless steel terminals, and tubes. A packet of dielectric grease is included for terminal protection during service.

Key Features

• Walker ThunderCore PRO ignition wire set
• Part number 924-1040
• Fits 1979-1985 Mazda RX-7
• Hi-temp OE-quality silicone boots and tips
• Stainless steel terminals and tubes
• Supplied with dielectric grease
• Manufactured in the USA in an ISO9001 certified facility
• Built to meet or exceed OEM specifications and test requirements

Product Details

The ThunderCore PRO line focuses on OE-style ignition performance with materials selected for heat resistance and stable electrical transfer. On Mazda RX-7 applications, proper spark plug wire condition is important for consistent spark delivery, especially when replacing aged or heat-damaged wires. Walker 924-1040 is engineered as a direct replacement wire set for the listed RX-7 fitment and is backed by Walker’s manufacturing, product management, and engineering expertise.

This part cross-references DENSO Auto Parts 671-2002 for the same application.

Common Issues Addressed

• Misfires caused by cracked or worn ignition wires
• Hard starting from weak spark transfer
• Rough idle related to deteriorated wire insulation
• Heat-related wire breakdown in the engine bay
• Voltage leakage at aged terminals or boots

Installation Notes

Verify wire routing against the original layout before removal to avoid crossfire or interference. Inspect distributor cap, rotor, and spark plugs during installation, and apply the included dielectric grease at the boot-to-terminal contact points as directed by standard ignition service practice. Confirm fitment by year and vehicle configuration before installation on your Mazda RX-7.

Quality Assurance

Walker Products manufactures ThunderCore PRO components in an ISO9001 certified facility in the USA and states that this wire set is built to meet or exceed OEM specifications and test requirements.