Walker 924-1390 Spark Plug Wire Set

Walker ThunderCore PRO Spark Plug Wire Set

Walker ThunderCore PRO spark plug wire set 924-1390 is built for direct replacement service on select Land Rover applications. It combines OE-style materials with fitment-specific engineering for 1995-1998 Range Rover, 1996-1998 Discovery, and 1997 Defender 90 models.

Key Features

• Walker ThunderCore PRO line for ignition wire replacement
• Fits 1996-1998 Land Rover Discovery, N/A
• Fits 1995-1998 Land Rover Range Rover, N/A
• Fits 1997 Land Rover Defender 90, N/A
• Hi-temp silicone boots and tips for elevated underhood temperatures
• Stainless steel terminals and tubes for secure electrical connection
• Supplied with dielectric grease
• Manufactured in an ISO9001 certified facility in the USA
• Built to meet or exceed OEM specifications and test requirements

Product Details

The Walker ThunderCore PRO line focuses on ignition performance and OE-style durability. Part number 924-1390 uses premium components, including high-temperature silicone boots and tips plus stainless steel terminals and tubes, to support consistent spark delivery in demanding engine bay conditions. This part cross-references NGK (e.g., 8029) for the same application.

For Land Rover Discovery, Range Rover, and Defender 90 service, 924-1390 is a direct-fit spark plug wire set choice when replacing worn ignition leads. It is manufactured to Walker’s OEM-equivalent standards in the USA and includes dielectric grease for proper terminal service.

Common Problems This Part Can Address

• Misfires caused by aged or heat-damaged ignition wires
• Hard starting from weak spark transfer
• Rough idle related to deteriorated wire insulation
• Voltage leakage from cracked boots or worn terminals
• Intermittent ignition performance on Land Rover Discovery, Range Rover, and Defender 90 models

Installation Notes

Match each wire to the correct cylinder before removal to preserve firing order. Inspect coil and plug terminals for corrosion or carbon tracking before installation. Apply the included dielectric grease to the boot interiors and seat each connection fully to help maintain a secure fit.

Quality Assurance

Walker manufactures the ThunderCore PRO line in an ISO9001 certified facility in the USA and builds it to meet or exceed OEM specifications and test requirements. The brand backs this product with its own manufacturing, product management, and engineering expertise.