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Champion 821 Copper Plus Non-Resistor Spark Plug 14mm

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

821
06/01/2036 12:50 AM
Sale Price

$3.94

In Stock (10+)

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Usually delivered within 2 days

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Product Details

The Champion 821 Copper Plus spark plug delivers reliable ignition performance for a wide range of small engines and vintage applications. Designed with a copper core center electrode, this plug provides superior heat dissipation and precise heat range control for optimal engine performance and extended service life.

Key Features:

  • Copper core center electrode for accurate heat control and improved thermal conductivity
  • Non-resistor design ideal for older ignition systems and magneto applications
  • Patented SAC-9 semi-conductor resistor provides maximum EMI and RFI suppression
  • Patented Ultraseal coated shell prevents rust and corrosion for longer plug life
  • 14mm thread size for broad application compatibility

Champion spark plugs are engineered to meet or exceed OEM specifications, providing dependable starting and smooth engine operation across various operating conditions. The copper core construction ensures consistent spark energy delivery while managing electrode temperatures effectively.

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Good job

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Very satisfied with this company. Ordered the part from another company and had nothing but problems. We found this place and the part was cheaper and they delivered the right part! Will do busy with again.

everything was easy and fast

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Very happy with my purchase. SUPER fast shipping and great communication. Will use again!

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A+ part as advertised, quick shipping.

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