Home / Champion 346 Copper Plus Spark Plugs RC10YC4 - 1 Pack
Champion 346 Copper Plus Spark Plugs RC10YC4 - 1 Pack
$13.77
Free shipping on all orders.
Qty In Stock: 20
The Champion 346 Copper Plus Spark Plug RC10YC4 1 Pack is designed for dependable ignition, delivering smooth engine performance and consistent combustion for automotive, small engine, and general replacement applications. Built for reliable performance and convenient replacement, this item helps support efficient starts and steady engine operation with trusted Champion quality and dependable operation.
Features & Benefits:
🔧 Includes 1 Champion RC10YC4 Copper Plus spark plug for convenient replacement
🔧 Copper Plus construction helps support reliable spark output and efficient combustion
🔧 Resistor design helps reduce radio frequency interference
🔧 Durable insulator and electrode construction for consistent ignition performance
Specifications:
Brand & Part Number: Champion 346 (RC10YC4)
Quantity: 1 Pack
Product Type: Copper Plus Spark Plug
Application: Automotive, small engine, and general replacement
Thread Size: 14mm
Reach: 19mm (3/4 in)
Hex Size: 5/8 in (16mm)
Seat Type: Gasket
Resistor: Yes
Choose Champion RC10YC4 Copper Plus spark plugs for reliable performance, convenient replacement, and trusted quality—order today!
Shipping Info
Free shipping on every US order. In-stock parts typically ship within 1 business day from Texas.
Returns
30-day returns on unused parts in original packaging. Wrong or defective items are replaced or refunded. See the return policy.
How do I confirm this part fits?
Match the brand and part number to your vehicle, or use the Parts Finder on the homepage. Contact us before ordering if you are unsure.
Are these parts new?
Yes. TXN Supply Co sells new parts from trusted OEM-quality brands — not remanufactured cores.
How fast will my order ship?
In-stock orders ship within 1 business day. Delivery time depends on your ZIP; most US addresses arrive in 2–5 business days.
What is your return policy?
Unused items can be returned within 30 days in original packaging. Customer-initiated returns may include a restocking fee and return shipping.
