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Champion 851C DJ6J 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

851C
05/27/2036 7:56 PM
Sale Price

$4.12

In Stock (10+)

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Usually delivered within 2 days

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Product Details

The Champion 851C DJ6J Copper Plus spark plug is designed for reliable performance in small engines, including chainsaws, lawn mowers, tractors, and other outdoor power equipment. This conventional spark plug features nickel alloy electrodes and a copper core center electrode that provides increased conductivity and superior heat control for optimal combustion and long-lasting wear.

Key Features:

  • Copper core center electrode for enhanced conductivity and heat dissipation
  • Nickel alloy electrodes for dependable performance and durability
  • 14mm thread diameter with 1.25mm thread pitch
  • Tapered seat design with 0.307-inch (7.8mm) reach
  • 5/8-inch (16mm) hex size for easy installation
  • Pre-gapped at 0.024 inches (0.6mm), check gap range 0.022-0.028 inches
  • Heat range 6 for optimal temperature management
  • Resists fouling and offers superior corrosion resistance
  • Non-resistor design with solid terminal type

Cross-References: Replaces Bosch HS5E, 7539; DENSO T22MU, WA22MU; ACDelco CS41T; Motorcraft AF3NX; Prestolite 14F3N; Silver Streak 77-316-1. Torque specifications: 7-15 lb-ft for both cast iron and aluminum heads.

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I was searching for brake rotors on the Internet for over 3 hours tring to find the best prices-- Autoplicity beat everyone hands down! The best deals out there. Quick response and my order shipped within one business day! Bravo. <br><br>Their website could be improved by auto selecting make/model combinations. I had to double check the part numbers for the pads..they matched the rear pads with the front rotors. I only caught this due to the fact that the pads were extremely cheap..too cheap. The low price was for the rear set as front pads usually at more expensive due to their larger size.

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