Autolite XP5245 Spark Plug

Autolite Iridium Spark Plug XP5245 Overview

The Autolite Iridium Spark Plug XP5245 is engineered for reliable ignition performance in a range of GM and other compatible vehicles. Designed with advanced materials and precision construction, this spark plug supports efficient combustion and consistent engine operation.

• Iridium center electrode tip for enhanced durability and ignition
• Taper cut ground electrode with platinum tip for improved spark efficiency
• Copper core center electrode for optimal conductivity
• Ceramic insulator material with a fine wire center electrode design
• Resistor type with 4000 ohm resistance to reduce electrical noise
• Thread size M14 x 1.25 with a 5/8 inch hex size for standard installation
• Compatible with multiple GM makes and models including Chevrolet, GMC, Cadillac, and more

Iridium Spark Plug Brand Line Details

The Autolite Iridium Spark Plug line focuses on performance and longevity by utilizing iridium in the center electrode tip. This material choice offers a fine wire design that improves ignition reliability and fuel efficiency. The XP5245 model benefits from this technology, providing a balance of durability and consistent spark delivery for secondary ignition systems.

Technical Features and Specifications

The XP5245 spark plug features a copper core center electrode with an iridium tip, which enhances electrical conductivity and wear resistance. The ground electrode is constructed with a nickel core and a platinum tip, shaped with a taper cut design to optimize spark exposure. The ceramic insulator ensures high dielectric strength and heat resistance, rated at a manufacturer heat range of 10. This spark plug includes a resistor with 4000 ohms resistance to minimize radio frequency interference. The seat type is tapered, and the electrical terminal uses a non-removable nut design. The thread diameter is 14 mm with a pitch of 1.25 mm, suitable for many GM vehicles.

Compatible Vehicles and Applications

• Buick, Cadillac, Chevrolet, GMC, Hummer, Isuzu, Oldsmobile, Pontiac, Saab
• Models such as Chevrolet Silverado 1500, GMC Sierra 2500 HD, Cadillac Escalade, Chevrolet Camaro, Pontiac GTO, and more
• Designed for secondary ignition systems requiring high-performance spark plugs

Common Issues Addressed by XP5245 Spark Plug

• Misfires and rough idling due to worn or inefficient spark plugs
• Reduced fuel efficiency from incomplete combustion
• Difficulty starting engines in compatible GM vehicles
• Engine hesitation or power loss under load
• Electrical interference affecting onboard electronics

Installation Notes and Tips

Ensure the engine is cool before installation to avoid damage. Use a torque wrench to tighten the spark plug to manufacturer specifications, typically around 18-22 ft-lbs for M14 x 1.25 threads. Avoid using a washer as this model does not include one. Inspect the spark plug gap before installation; the fine wire iridium tip requires precise gap settings for optimal performance. The 5/8 inch hex size allows for standard spark plug socket use.

Quality Assurance and Warranty

Autolite manufactures the XP5245 spark plug to meet OEM standards for fit, form, and function. The use of premium materials such as iridium and platinum ensures durability and consistent performance. While specific warranty details are not provided, Autolite products typically come with a limited warranty against manufacturing defects. Always verify warranty terms with the point of purchase.