Autolite 5243 Spark Plug

Reliable Ignition with Autolite Copper Resistor Spark Plug 5243

The Autolite Copper Resistor Spark Plug 5243 is engineered to provide consistent ignition performance for a range of GM vehicles. Designed with durable materials and precise specifications, this spark plug supports efficient combustion and smooth engine operation.

• Resistance rating of 4000 ohms for noise suppression
• Tapered ground electrode tip with nickel core and tip material
• Copper center electrode core with nickel tip for optimal conductivity
• Long projection ceramic insulator for enhanced durability
• Pre-gap size of 0.044 inches (1.10 mm) for precise spark delivery
• Standard/regular center electrode design with a single ground electrode
• Tapered seat type and 14.0 mm thread diameter with 0.679 inch (17.0 mm) reach
• Hex size of 5/8 inch (16 mm) and stud-type electrical terminal

About the Autolite Copper Resistor Spark Plug Line

The Copper Resistor Spark Plug line from Autolite is designed to reduce electrical interference while maintaining reliable spark performance. The integrated resistor helps minimize radio frequency interference (RFI) that can affect vehicle electronics. This line combines copper core electrodes with nickel tips and ground electrodes to balance conductivity and durability, making it suitable for a variety of ignition systems.

Detailed Product Description

The Autolite 5243 spark plug features a copper core center electrode that enhances thermal conductivity and improves spark efficiency. The nickel ground electrode and tip provide resistance to wear and corrosion. Its tapered ground electrode tip and tapered seat ensure a secure fit and consistent spark gap. The long projection ceramic insulator improves heat dissipation and mechanical strength. With a resistance of 4000 ohms, this spark plug effectively suppresses electrical noise, protecting sensitive vehicle electronics.

Compatible Vehicles and Applications

• Designed for use in Cadillac, Chevrolet, GMC, Oldsmobile, and Pontiac models
• Compatible with Chevrolet Silverado 1500, 2500 HD, 3500 HD, Tahoe, Suburban 1500, 2500, 3500 HD
• Fits GMC Sierra 1500, 2500 HD, 3500 HD, Yukon, Yukon XL 1500, Yukon XL 2500
• Suitable for Cadillac Escalade, Escalade ESV, Escalade EXT, CTS
• Also compatible with Chevrolet Camaro, Corvette, Impala, Monte Carlo, and more

Common Issues Addressed by Autolite 5243 Spark Plug

• Engine misfires due to worn or faulty spark plugs
• Reduced fuel efficiency from inconsistent ignition
• Difficulty starting the engine in cold conditions
• Electrical interference affecting vehicle electronics
• Premature electrode wear impacting spark quality

Installation Notes and Tips

Ensure the spark plug gap is set to the specified pre-gap size of 0.044 inches (1.10 mm) before installation. Use a torque wrench to tighten the spark plug to manufacturer specifications to avoid damage to the tapered seat. The 5/8 inch (16 mm) hex size allows for standard spark plug socket compatibility. Verify compatibility with your specific vehicle model and engine type prior to installation.

Quality Assurance and Warranty

Autolite spark plugs are manufactured to meet OEM standards for fit, form, and function. The Copper Resistor Spark Plug 5243 undergoes rigorous quality control to ensure reliable performance. While specific warranty details are not provided, Autolite products typically come with manufacturer-backed quality assurance to support durability and performance.