Walker 924-1821 Spark Plug Wire Set

Walker ThunderCore PRO Ignition Wire Set

Walker ThunderCore PRO spark plug wire set 924-1821 is built for Mercedes-Benz applications that need dependable ignition performance and OE-style construction. It uses hi-temp silicone boots and tips, stainless steel terminals, and tubes to support consistent spark delivery in demanding engine bay conditions.

Compatible With Mercedes-Benz G55 AMG, SLK55 AMG, G500, SL55 AMG, ML500, R500, C55 AMG, CL500, CL55 AMG, CLK500, CLK55 AMG, CLS500, CLS55 AMG, E500, E55 AMG, S430, S500, S55 AMG, SL500, CLK430, E430, ML55 AMG, ML430, and C43 AMG applications.

Key Features

• Walker ThunderCore PRO line for OE-style ignition wire replacement
• Precision manufactured in an ISO9001 certified facility in the USA
• Meets or exceeds OEM specifications and test requirements
• Hi-temp OE-quality silicone boots and tips
• Stainless steel terminals and tubes for durable electrical connection
• Includes dielectric grease

Detailed Product Overview

Part number 924-1821 is engineered as a direct-fit spark plug wire set for a wide range of Mercedes-Benz V8 and AMG models. The ThunderCore PRO design focuses on stable ignition transfer, heat resistance, and long-term connection integrity, making it a practical choice for Mercedes-Benz G55 AMG, SL500, E55 AMG, and other listed applications. This part cross-references DENSO Auto Parts 671-8169 for the same application.

Common Issues This Part Can Address

• Misfires caused by worn or heat-damaged plug wires
• Hard starting related to weak spark delivery
• Rough idle from deteriorated ignition wire insulation
• Intermittent ignition performance from corroded terminals
• Voltage leakage in high-heat engine bay conditions

Installation Notes and Tips

Verify vehicle year, engine configuration, and wire routing before installation. Route each lead away from exhaust heat and moving components, and apply the supplied dielectric grease at the boots as directed to help support a secure seal and easier future service. For Mercedes-Benz E430 applications, the fitment note specifies a 16 lead set; ThunderCore PRO.

Quality Assurance

Walker Products manufactures this ThunderCore PRO wire set in an ISO9001 certified U.S. facility and states that it is built to meet or exceed OEM specifications and test requirements. The brand backs the design with its own manufacturing, product management, and engineering expertise.