Autolite 2545 Spark Plug

Reliable Ignition with Autolite Copper Resistor Spark Plug 2545

The Autolite Copper Resistor Spark Plug 2545 is engineered to deliver consistent ignition performance for select Ford, Lincoln, and Mercury vehicles. Designed with durable materials and precise specifications, this spark plug supports efficient combustion and engine reliability.

• Resistance: 5000 ohms for effective electrical noise suppression
• Ground Electrode Tip: Tapered design with nickel material for durability
• Center Electrode: Copper core with nickel tip for optimal conductivity
• Pre-Gap Size: 0.044 inches (1.10 mm) for precise spark gap
• Thread Diameter: 14.0 mm with 0.809 inch (20.5 mm) reach
• Hex Size: 5/8 inch (16 mm) for standard installation tools
• Insulator: Extra-long ceramic type for enhanced insulation
• Electrical Terminal: Stud type for secure connection

About the Autolite Copper Resistor Spark Plug Line

The Copper Resistor Spark Plug line from Autolite combines copper core electrodes with resistor technology to reduce radio frequency interference while maintaining strong spark energy. This balance supports smooth engine operation and helps protect sensitive electronic components in vehicles. The 2545 model exemplifies this line’s focus on durability and consistent ignition performance.

Detailed Product Description

The Autolite 2545 spark plug features a tapered ground electrode tip made of nickel, paired with a copper core center electrode also tipped with nickel. This combination ensures efficient heat transfer and reliable spark generation. The resistor type design with 5000 ohms resistance helps minimize electrical noise that can interfere with vehicle electronics. Its extra-long ceramic insulator provides superior insulation and heat resistance, while the tapered seat and standard thread diameter ensure proper fitment and sealing. Compatible with various Ford, Lincoln, and Mercury models, including the Mustang, Taurus, Town Car, and Ranger, this spark plug supports optimal engine performance in these vehicles.

Compatible Vehicles and Common Applications

• Ford Mustang, Taurus, Ranger, Aerostar, Fairmont, Windstar
• Lincoln Continental, Mark VII, Town Car, Grand Marquis, Zephyr
• Mercury Cougar, Capri, Colony Park, Marquis, Sable, Thunderbird
• Addresses ignition misfires and rough idling
• Helps resolve poor fuel economy and hard starts

Installation Notes and Tips

• Use a 5/8 inch (16 mm) socket for installation and removal
• Ensure the pre-gap of 0.044 inches (1.10 mm) is maintained for optimal spark
• Apply anti-seize compound on threads if recommended by vehicle manufacturer
• Tighten to manufacturer’s torque specifications to avoid damage
• Inspect ignition wires and connectors during replacement

Quality Assurance and Warranty

Autolite spark plugs are manufactured to meet OEM standards for fit, form, and function. The Copper Resistor Spark Plug 2545 undergoes rigorous quality control to ensure consistent performance and durability. While specific warranty details vary by distributor, Autolite products typically include coverage against manufacturing defects. Consult your vehicle’s service manual and local regulations for installation and warranty information.