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Champion 306C Copper Plus Spark Plug (L86C)

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

306C
05/31/2036 11:56 PM
Sale Price

$4.49

In Stock (10+)

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Usually delivered within 2 days

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No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Champion 306C Copper Plus spark plug (also known as stock number L86C) is a dependable replacement spark plug designed for reliable ignition performance in a wide range of small engines and vintage automotive applications. This spark plug features Champion's proven copper core electrode technology that provides excellent heat dissipation and conductivity for consistent firing.

Key Features:

  • Copper core center electrode for superior heat control and conductivity
  • 14mm thread diameter with 0.750-inch reach
  • 5/8-inch hex size for standard spark plug sockets
  • Resistor type for reduced radio frequency interference (RFI)
  • Heat range suitable for normal operating conditions
  • Pre-gapped and ready to install

Champion spark plugs have been trusted by mechanics and DIY enthusiasts for decades, offering OEM-quality performance at an affordable price. The 306C/L86C is commonly used in lawn and garden equipment, chainsaws, and select classic vehicles. Always verify the correct spark plug application for your specific engine before installation.

Great prices and quick shipping! They kept me informed of when the item was shipped also. Couldn't be happier!

quick

Great prices. Great live customer service. Very pleased, will definitely order again.

Lowest prices I found on the net and great customer service! Fast shipping too!

Nice website, easy to order

GREAT SERVICE, FAST SHIPPING, WILL USE AGAIN

Excellent service. I called in Monday for a hard to find item which I had ordered from several other online shops who despite saying were In Stock online were not actually in stock at all and the orders were canceled after waiting a week to find out. They had the item in stock as listed on their website and shipped the next day. The price was the cheapest of anyone who actually had the item in stock by a substantial amount.

Its amazing the prices Autoplicity is able to offer some of their products at. The product i ordered was consistently msrp on every site i searched through, yet autoplicity had it for $10 less. Lowest price along with a attractive and intuitive website is a win in my book. Having it shipped in less the 24hrs is another bonus

Lowest prices with quick processing and shipping. Very happy and will shop again!

Best price around, very fast shipping and great service! I will buy from them again!

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