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Home / 4 pc Champion 14 Copper Plus Spark Plugs for 14R32 14R42 4091933 4339425 AR32 AR42 AS42C BPR6S CR43S R42S R43CS R43S R44S RJ12YC W20PRU WR7F Ignition Wire Secondary

4 pc Champion 14 Copper Plus Spark Plugs for 14R32 14R42 4091933 4339425 AR32 AR42 AS42C BPR6S CR43S R42S R43CS R43S R44S RJ12YC W20PRU WR7F Ignition Wire Secondary

(2)

$23.77

Free shipping on all orders.

Qty In Stock: 20

The Champion 14 Copper Plus Spark Plug RJ12YC 4 Pack is designed for dependable ignition and smooth engine performance, delivering reliable starts, efficient combustion, and lasting durability for automotive, small engine, and powersports applications. Built for consistent operation and convenient replacement, these Copper Plus spark plugs help support steady engine running with trusted Champion quality.

Features & Benefits:

🔧 Includes 4 Champion RJ12YC Copper Plus spark plugs for convenient multi-cylinder or multi-unit replacement
🔧 Copper core center electrode promotes strong spark energy and efficient heat dissipation
🔧 Resistor design helps reduce electromagnetic interference for smoother electronics performance
🔧 Durable construction supports reliable ignition and consistent engine operation

Specifications:

Brand & Part Number: Champion 14 (RJ12YC)
Quantity: 4 Pack
Product Type: Copper Plus Spark Plug
Application: Automotive, small engine, and powersports replacement
Thread Size: 14mm
Reach: 19mm (3/4 in)
Hex Size: 5/8 in (16mm)
Seat Type: Gasket
Resistor: Yes
Terminal Type: Removable Nut

Choose Champion RJ12YC Copper Plus spark plugs for reliable performance, convenient replacement, and trusted quality—order this 4 pack 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.

Customer Reviews

5.0 out of 5.0 (2 reviews)

  • Order delivered on time with no issues

    — col55....