Autolite AR103 Racing Spark Plug 14mm Thread Tapered Seat — Fits Performance Engines

SKU: BBRQ_AR103
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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

Product Details

Product Description
Part Numbers
Sizing & Fit

About Autolite

Autolite engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Autolite lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

Maximize Power with Autolite AR103 Racing Plugs

The Autolite AR103 Racing Spark Plug is engineered specifically for high-performance and racing engines. When you are pushing your engine to the limit, you need an ignition component that can handle extreme heat and pressure. The AR103 features a 14mm thread and a tapered seat design, ensuring a secure fit in performance-oriented cylinder heads. This resistor-type plug is built to provide a stable, hot spark to ensure complete combustion even under heavy load.

Performance Benefits

  • Racing-Grade Construction: Built to withstand high-output engine demands.
  • Tapered Seat: Provides a secure, reliable seal for high-compression engines.
  • 14mm Thread: Compatible with many popular performance cylinder heads.
  • 0.708 in Reach: Optimized for racing combustion chamber geometry.

In the world of racing, every detail matters. The Autolite AR103 is designed to provide the consistency and reliability that professional and amateur racers demand. By ensuring a powerful spark, this plug helps maximize power output and throttle response. Whether you are building a track car or a weekend warrior, the AR103 is a critical component for your ignition system. Don't settle for standard plugs when you can upgrade to racing-spec technology. Find the Autolite AR103 and other high-performance automotive parts at GGCRACING.

Product Details

Product Description
Part Numbers
Sizing & Fit

About Autolite

Autolite engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Autolite lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

Maximize Power with Autolite AR103 Racing Plugs

The Autolite AR103 Racing Spark Plug is engineered specifically for high-performance and racing engines. When you are pushing your engine to the limit, you need an ignition component that can handle extreme heat and pressure. The AR103 features a 14mm thread and a tapered seat design, ensuring a secure fit in performance-oriented cylinder heads. This resistor-type plug is built to provide a stable, hot spark to ensure complete combustion even under heavy load.

Performance Benefits

  • Racing-Grade Construction: Built to withstand high-output engine demands.
  • Tapered Seat: Provides a secure, reliable seal for high-compression engines.
  • 14mm Thread: Compatible with many popular performance cylinder heads.
  • 0.708 in Reach: Optimized for racing combustion chamber geometry.

In the world of racing, every detail matters. The Autolite AR103 is designed to provide the consistency and reliability that professional and amateur racers demand. By ensuring a powerful spark, this plug helps maximize power output and throttle response. Whether you are building a track car or a weekend warrior, the AR103 is a critical component for your ignition system. Don't settle for standard plugs when you can upgrade to racing-spec technology. Find the Autolite AR103 and other high-performance automotive parts at GGCRACING.

Product Details

Product Description

About Autolite

Autolite engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Autolite lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

Maximize Power with Autolite AR103 Racing Plugs

The Autolite AR103 Racing Spark Plug is engineered specifically for high-performance and racing engines. When you are pushing your engine to the limit, you need an ignition component that can handle extreme heat and pressure. The AR103 features a 14mm thread and a tapered seat design, ensuring a secure fit in performance-oriented cylinder heads. This resistor-type plug is built to provide a stable, hot spark to ensure complete combustion even under heavy load.

Performance Benefits

  • Racing-Grade Construction: Built to withstand high-output engine demands.
  • Tapered Seat: Provides a secure, reliable seal for high-compression engines.
  • 14mm Thread: Compatible with many popular performance cylinder heads.
  • 0.708 in Reach: Optimized for racing combustion chamber geometry.

In the world of racing, every detail matters. The Autolite AR103 is designed to provide the consistency and reliability that professional and amateur racers demand. By ensuring a powerful spark, this plug helps maximize power output and throttle response. Whether you are building a track car or a weekend warrior, the AR103 is a critical component for your ignition system. Don't settle for standard plugs when you can upgrade to racing-spec technology. Find the Autolite AR103 and other high-performance automotive parts at GGCRACING.

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