Autolite 5325 Spark Plug

Reliable Ignition with Autolite Copper Resistor Spark Plug 5325

The Autolite Copper Resistor Spark Plug 5325 delivers consistent ignition performance for a wide range of vehicles including Acura, Toyota, BMW, and Volkswagen models. Designed with durable materials and precise specifications, this spark plug supports efficient engine operation and smooth starts.

• Resistance: 4000 ohms for effective noise suppression
• Tapered ground electrode tip made of nickel for durability
• Copper center electrode core with nickel tip for optimal conductivity
• Stud-type electrical terminal for secure connection
• Pre-gap size of 0.044 inches (1.10 mm) for precise spark gap
• Flat seat type with 14.0 mm thread diameter and 1.000 inch (26.5 mm) reach
• Single ground electrode with mid-projection ceramic insulator
• Hex size 5/8 inch (16 mm) for standard installation tools

About the Copper Resistor Spark Plug Line

The Autolite Copper Resistor Spark Plug line is engineered to provide reliable ignition with built-in resistance to reduce electromagnetic interference. This line combines copper core electrodes for enhanced heat dissipation and nickel alloy tips for wear resistance, making it suitable for a variety of secondary ignition applications across multiple vehicle makes and models.

Product Details and Specifications

The Autolite 5325 spark plug features a copper core center electrode that improves thermal conductivity, helping to maintain optimal operating temperatures. The tapered ground electrode tip and nickel materials enhance electrode longevity and consistent spark delivery. With a resistance rating of 4000 ohms, this spark plug effectively minimizes radio frequency interference, ensuring stable engine performance. The ceramic insulator with mid-projection design provides excellent insulation and heat resistance, while the flat seat and 14 mm thread diameter ensure compatibility with many popular vehicles.

Compatible Vehicles and Applications

• Compatible with Acura, Toyota, BMW, Volkswagen, Honda, Nissan, and more
• Fits models such as 4Runner, Camry, 328i, Golf, Altima, and RX350
• Suitable for secondary ignition systems requiring a 14 mm thread diameter and 1.000 inch reach
• Ideal for vehicles needing a resistor spark plug with a 0.044 inch pre-gap

Common Issues Addressed by Autolite 5325 Spark Plug

• Engine misfires caused by worn or faulty spark plugs
• Radio frequency interference affecting vehicle electronics
• Poor fuel efficiency due to inconsistent ignition
• Hard starting or rough idling conditions
• Reduced engine power and acceleration

Installation Notes and Tips

Ensure the spark plug gap is set to the specified 0.044 inch (1.10 mm) pre-gap before installation. Use a 5/8 inch (16 mm) socket wrench for proper tightening. Avoid over-tightening to prevent thread damage. This spark plug is designed for flat seat applications with a 14 mm thread diameter and 1.000 inch reach, so verify compatibility with your vehicle’s engine specifications prior to installation.

Quality Assurance and Warranty

Autolite Copper Resistor Spark Plug 5325 is manufactured to meet OEM standards for ignition components. The use of copper core electrodes and nickel alloy tips ensures durability and consistent performance. While specific warranty details are not provided, Autolite products typically adhere to industry quality controls to support reliable engine operation.