Standard Wires 55415 Spark Plug Wire Set

Ignition Wire Set for Jaguar V12 Applications

Standard Wires 55415 is a spark plug wire set for select 1989-1991 Jaguar XJ12 and 1989-1991 Jaguar XJS models with a Marelli distributor. It is built to route high voltage to the spark plugs while helping reduce electrical interference in the ignition system.

Key Features

• Hi-gloss clear coat outer finish with a high-temperature silicone jacket
• OE-type wire core design for proper electrical resistance and signal control
• Improved abrasion resistance for demanding engine bay conditions
• Built to handle severe heat exposure
• Enhanced RFI protection for cleaner ignition performance

Detailed Description

This Standard Wires spark plug wire set, part number 55415, is engineered for Jaguar V12 ignition service where heat resistance, voltage transfer, and radio-frequency suppression matter. The wire construction uses an OE-style core design and a silicone-based jacket to help maintain stable spark delivery in the 1989-1991 Jaguar XJ12 and 1989-1991 Jaguar XJS with Marelli distributor. Standard Wires 55415 is a direct-fit ignition wire solution for these applications.

This part cross-references Standard Ignition (e.g., 55415) for the same application.

What It Helps Address

• Misfires caused by worn or heat-damaged plug wires
• Voltage loss between the ignition coil and spark plugs
• Electrical noise that can affect ignition performance
• Cracked or abraded wire insulation from engine heat and movement
• Rough idle or inconsistent spark delivery in V12 ignition systems

Installation Notes and Tips

Verify distributor type before ordering; this application is listed for Marelli distributor vehicles. Route each lead to match the original wire layout and keep the wires away from hot exhaust components and sharp edges. Confirm plug and cap connections are fully seated after installation.

Quality Assurance

Standard Wires uses a high-temperature silicone jacket and an OE-matched core design to support reliable ignition performance and RFI control in severe underhood conditions.