Autolite 145 Spark Plug

Overview of Autolite Copper Resistor Spark Plug 145

The Autolite Copper Resistor Spark Plug 145 is engineered for reliable ignition performance in a range of Chevrolet and GMC vehicles. Designed with a copper core and resistor technology, this spark plug supports efficient combustion and reduced electrical interference.

• Resistance: 4000 ohms for noise suppression
• Center electrode core made of copper with nickel tip
• Tapered ground electrode tip and seat for optimal spark
• Stud-type electrical terminal for secure connection
• Ceramic short insulator for durability and heat resistance
• Pre-gap size of 0.040 inches (1.00 mm) for precise spark gap
• Hex size 5/8 inch (16 mm) for standard installation tools
• Thread diameter 14.0 mm with 11.0 mm reach
• Single ground electrode made of nickel

Details on the Copper Resistor Spark Plug Line

The Autolite Copper Resistor Spark Plug line is designed to provide consistent ignition performance while minimizing radio frequency interference. The resistor built into the spark plug helps reduce electrical noise that can affect vehicle electronics. This line uses a copper core center electrode to improve heat dissipation and maintain stable operating temperatures, which is critical for the longevity and efficiency of the spark plug.

Technical Description and Features

The Autolite Copper Resistor Spark Plug 145 features a standard center electrode design with a copper core and nickel tip, which balances conductivity and durability. The tapered ground electrode tip and seat design ensure a focused spark for efficient combustion. The ceramic short insulator provides excellent heat resistance and electrical insulation. With a resistance rating of 4000 ohms, this spark plug reduces electromagnetic interference, protecting sensitive vehicle electronics. The stud-type electrical terminal ensures a secure and reliable connection within the ignition system.

Compatible Vehicles and Applications

• Chevrolet Blazer, C10, C10 Suburban, C20, C20 Suburban, C30
• Chevrolet C1500, C1500 Suburban, C2500, C2500 Suburban, C3500
• Chevrolet El Camino
• GMC G10, G20, G30, Jimmy, K5 Blazer, K10, K10 Suburban
• GMC K20, K20 Suburban, K30, K1500, K1500 Suburban, K2500, K2500 Suburban, K3500
• GMC P10, P20, P30, P1500, P2500, P3500, R20, R30, R2500, R3500
• GMC V20, V30, V2500, V3500

Common Issues Addressed by This Spark Plug

• Misfiring or rough engine idle due to worn spark plugs
• Difficulty starting engines in Chevrolet and GMC trucks and SUVs
• Reduced fuel efficiency caused by incomplete combustion
• Electrical interference affecting vehicle electronics and radio
• Overheating or fouling from inadequate heat dissipation

Installation Notes and Tips

Before installation, verify the spark plug gap is set to 0.040 inches (1.00 mm) as specified. Use a 5/8 inch (16 mm) socket wrench for proper torque application. Ensure the spark plug threads are clean and free of debris to avoid cross-threading. Tighten to manufacturer torque specifications to prevent damage to the tapered seat. The stud-type terminal requires a compatible ignition wire connection for secure fitment.

Quality Assurance and Warranty

Autolite Copper Resistor Spark Plugs are manufactured to meet OEM specifications for Chevrolet and GMC vehicles. The use of high-quality materials such as copper core electrodes and ceramic insulators ensures durability and consistent performance. While specific warranty details are not provided here, Autolite products typically come with a limited warranty against manufacturing defects. Consult product packaging or manufacturer resources for exact warranty terms.