My Account
Shopping Cart

Champion 401 Spark Plug RS12YC Copper Plus 4-Pack

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

401
06/01/2036 12:55 AM
Sale Price

$3.99

In Stock (10+)

delivery box

Usually delivered within 2 days

Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Champion 401 Spark Plug (RS12YC) is an OE-replacement copper core spark plug designed for reliable ignition performance in a wide range of small engines and automotive applications. This 4-pack provides exceptional value for routine maintenance.

Key Specifications:

  • Thread Reach: 7/8 inch
  • Seat Type: Tapered (conical) seat
  • Gap: 0.035 inch (pre-gapped)
  • Hex Size: 13/16 inch
  • Electrode Type: Copper core center electrode
  • Heat Range: Medium (suitable for most standard applications)

Features & Benefits:

  • Copper core center electrode provides excellent heat dissipation and conductivity
  • Corrosion-resistant outer shell for extended service life
  • Proven OE-quality performance for dependable starting and smooth operation
  • Single electrode design for cost-effective replacement
  • Pre-gapped for easy installation

The RS12YC is one of Champion's most popular spark plug models, widely used in lawn mowers, generators, pressure washers, snowblowers, and various small engines. Compatible with many applications that originally specified Champion, Autolite, NGK, or other equivalent spark plugs. Always verify plug specifications match your engine's requirements before installation.

Products specifications

Type

Copper Plus

Great price for the item. Both internet and phone conversations were quick and knowledgeable.

Fast service purchased from them many times no problems and usually have coupon codes!! Will do buissiness with again.

the prices were great lowest i found on the net and the shipping is fast

fast shipping great price<br>great seller i recommend it 100% percent<br><br>

Cheapest price by far, not the speediest shipment unfortunately.

Found the best price at Autoplicity on my cold air intake. Quick turn-around time and inexpensive shipping. I'll definitely be back.

Great pricing on almost every product! Quick process and fast shipping! Will definitely order from Autoplicity again in the future.

quick and polite service will deal with again

Share icon
Return Policy
Returns are easy at Boatplicity

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy