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Champion 857 RH18Y 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

857
06/01/2036 12:56 AM
Sale Price

$4.20

In Stock (10+)

delivery box

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 857 (RH18Y) is a dependable copper core spark plug designed specifically for small engines commonly found in lawn mowers, garden equipment, and other outdoor power equipment. This OE replacement plug delivers reliable ignition performance for both residential and commercial applications.

Key Features:

  • Copper core center electrode for excellent conductivity and heat dissipation
  • Resistant to fouling for consistent performance in small engine applications
  • Superior corrosion resistance extends plug life and maintains performance
  • Proven durability in demanding small engine environments
  • Direct OE replacement for many lawn, garden, and small engine machines

The RH18Y design provides optimal heat range control for small engines, preventing overheating while maintaining efficient combustion. The corrosion-resistant construction ensures reliable starting and smooth operation season after season.

I had to contact autoplicity as the website had the wrong description of the item. The person that was able to assist was very knowledgeable and assured me that the description would be changed. That was last week and as of today, the description remains as is. However, and more importantly, I received the gauge quite quickly and it is the one I needed. So on that they did a great job!!!

Cheaper than anywhere else and received shipment in a timely manner.

Quick and easy ordering, easy to find what you need!

I like the way it was when I went to check out and will let you know when I get the parts I ordered hopefully I will get them because I ordered from one place and they sent my order to a place in Kalamazoo Ml and they would not send me my money or order so I lost my money

Fast and easy orders free shipping

Easy.

Great Price for the struts i ordered!

very good so far. will no for sure when i get item

Excellent price on the product and shipping! Ordered on Thursday night (after they closed) and they were shipped out Monday!

Good price and easy transaction... slow to ship though.

Great prices, better than any competitors and shipped fast. You do pay for shipping, but the discount on the merchandise makes up for that! So far would purchase from them again!

Checking out the product was simple enough.

Fast shipping, Great prices. After ordering,they sent out an email stating some items ordered may ship from the manufacturer. So, I was thinking item may take a few weeks to get. The next day I recieved email with tracking numbers saying item has shipped. So I was think ups ground 5 days maybe. I check on tracking numbers and items was out on truck for deliver. Nice! Ordered on Weekend got item on Tuesday.

Excellent price and received the product the next day.

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