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Champion 803C N4C Copper Plus Small Engine Spark Plug

Manufacturer

Champion

<h3>Champion: A Legacy of Engine Performance</h3><p>For decades, <strong>Champion</strong> has been one of the most trusted names in engine ignition and maintenance. Born from a commitment to precision engineering, Champion has earned its reputation by delivering reliable, time-tested replacement parts that keep engines running at their best — whether on the road, on the water, or in the backyard.</p><h3>World-Class Spark Plug Technology</h3><p>Champion's story is inseparable from the spark plug. The brand helped pioneer modern ignition technology, and today its spark plug lineup remains a go-to choice for automotive technicians and DIY mechanics alike. Champion <a href="/120-champion-spark-plug-7212">spark plugs</a> are engineered to deliver consistent ignition performance across a wide range of engine types, from daily-driver commuter cars to high-demand power sport machines. Whether you're tuning up a classic V8 or maintaining a small-displacement four-cylinder, Champion offers a plug designed to match your engine's specific requirements.</p><p>Beyond the plug itself, a reliable ignition system depends on every component working in harmony. Champion's <a href="/120-champion-spark-plugs-spark-plug-boot-kit-23507">spark plug boot kits</a> provide the complete solution — protecting ignition wires and ensuring a secure, interference-free connection between the plug and the ignition system. These kits are especially popular for vehicle owners who want a thorough tune-up rather than a partial fix.</p><h3>Marine and 2-Cycle Engine Solutions</h3><p>Champion's expertise doesn't stop at automotive ignition. The brand also serves boaters and marine enthusiasts with products formulated for the unique demands of water-based engines. Champion <a href="/120-champion-2-cycle-outboard-oil-200042">2-cycle outboard oil</a> is designed to protect outboard motors running in demanding marine conditions, helping to minimize wear, reduce deposits, and extend engine life. It's a natural extension of Champion's core philosophy: give every engine — regardless of application — the quality it deserves.</p><h3>Built for Every Engine, Every Application</h3><p>What sets Champion apart is the breadth of its coverage. From passenger vehicles to boats, lawn and garden equipment to power sport machines, Champion engineers products with real-world performance in mind. The brand's catalog of over 800 products means that regardless of what you drive, ride, or operate, there's a Champion part designed to keep it running at peak efficiency.</p><p>Whether you're doing a routine tune-up or a full ignition system overhaul, Champion's combination of heritage, innovation, and comprehensive coverage makes it a brand worth turning to first.</p>

Part Number

803C
05/31/2036 10:36 PM
Sale Price

$4.31

In Stock (10+)

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Usually delivered within 2 days

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No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Champion 803C N4C is a high-quality spark plug designed to enhance the performance of small engines, making it ideal for lawn equipment, motorcycles, snowmobiles, and outdoor power equipment. This conventional design spark plug delivers dependable performance for a wide range of small engine applications.

Key Features:

  • Copper core center electrode provides increased conductivity and superior heat control for optimal engine performance
  • Conventional design with nickel alloy electrodes ensures durability and consistent performance
  • Resists fouling for longer service life
  • 14mm thread size with 19.05mm (3/4 inch) reach
  • 0.026 inch gap size with gasket seat type
  • 13/16 inch hex size for easy installation

Cross references to multiple brands including AC Delco, Autolite, Bosch, Denso, Motorcraft, and NGK, making it a versatile OE-type replacement plug for various small engine applications. The copper core technology allows for accurate control of heat range, extending plug life and ensuring reliable ignition in demanding conditions.

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so far so good

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Best price by far! Very fast shipping at a very reasonable price. Will definitely use again!

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Quick turn around on my order. Best price around and reasonable shipping and handling. Done deal.

Best deal on the web!!! Price was so cheap I thought they had made a mistake and would cancel my order. Item arrived days later. I will do business with Autoplicity in the future. Thanks it was a great transaction and will recommend you to friends.

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