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  • Champion Copper Plus Spark Plug 346
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Champion Copper Plus Spark Plug 346
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Champion Copper Plus Spark Plug 346

CHAMPION
ELE1964
In stock
$5.72 $4.99
Description The Champion Copper Plus Spark Plug 346 is engineered to deliver reliable ignition performance and...
$4.99
Champion Copper Plus Spark Plug 346
Description

Description

The Champion Copper Plus Spark Plug 346 is engineered to deliver reliable ignition performance and long service life in a wide range of automotive applications. Featuring a copper core center electrode, this spark plug improves conductivity and heat control to support consistent combustion and dependable overall wear.

As part of the Champion Copper Plus line, the RC10YC4 is built for durable replacement performance with superior corrosion resistance and accurate heat range control for longer service life. Built to ISO and SAE standards, it is designed to provide proven performance in compatible engines while maintaining stable ignition operation.

With a flat seat, crush washer, resistor design, and factory pre-gap of 0.041 in (1.05 mm), this spark plug is a dependable replacement option for select automotive and powersports applications.

Features

  • Copper core center electrode improves conductivity and heat control

  • Built to ISO and SAE standards for proven performance

  • Champion Copper Plus design for dependable performance and durability

  • Superior corrosion resistance for longer service life

  • Accurate heat range control supports reliable ignition operation

  • Pre-gapped design for easier installation

Specifications

  • Brand: Champion

  • Part Number: 346

  • Plug Type: RC10YC4

  • Classification: Champion Copper Plus

  • Grade Type: Standard Replacement

  • Part Description: Spark Plug

  • Center Electrode Tip Material: Nickel

  • Center Electrode Design: Standard

  • Ground Electrode Quantity: 1

  • Ground Electrode Core Material: Nickel

  • Ground Electrode Tip Material: Nickel

  • Pre-Gap Size: 0.041 in / 1.05 mm

  • Hex Size: 0.625 in / 15.880 mm

  • Insulator Height: 0.06 in

  • Manufacturer Heat Range: 10

  • Seat Type: Flat

  • Reach: 0.75 in

  • Thread Diameter: 0.551 in / 14.000 mm

  • Resistor Type: Yes

  • Washer Included: Yes

  • Washer Type: Crush

  • Electrical Terminal Type: Non-Removable Nut

  • Hex Type: Hex

  • Indexed: No

  • Subject to Prop 65: No

Fitment

  • Fits a wide range of Acura, Audi, Chevrolet, Chrysler, Daewoo, Dodge, Honda, Hyundai, Isuzu, Kia, Land Rover, Mazda, Mitsubishi, Nissan, Pontiac, Porsche, Saab, Subaru, Suzuki, and Toyota applications.

  • Also fits select Honda Gold Wing and Honda Rune motorcycle applications.

  • Preserve the full application table from the original source for exact year, make, model, engine, and quantity requirements.

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Shipping

Order Processing
All orders are processed and shipped within 24 hours of purchase (excluding weekends and holidays).
Orders placed after 3:00 PM EST may ship the following business day.

Shipping Methods
Customers select their preferred shipping method and speed at checkout.
Shipping times are determined by the carrier and cannot be guaranteed by us.
Tracking information will be provided once your order has shipped.

Shipping Coverage
If your package arrives damaged, please notify the delivery driver immediately and contact the shipping carrier to file a claim.
You must report any missing or damaged items within 14 days of delivery.
After this time, we cannot be held responsible for lost or damaged items.

Returns

Return Window
You have 30 days from the date of delivery to request a return.
After 30 days, we are unable to accept returns, exchanges, or refund requests.

Eligibility
Items must be returned in their original condition—unused, unwashed, and with all tags and packaging intact.
Certain products may not be eligible for return (e.g., special-order items, customized products, or perishable goods).
Items that have been altered, installed, or modified cannot be returned.

Return Process
Contact our Customer Support team to request a Return Authorization (RMA) before sending items back.
Once your return is approved, you’ll receive instructions on where to send the product.
Customers are responsible for return shipping costs unless the item was defective or incorrect.

Refunds
Refunds are issued to the original payment method once the returned item has been received and inspected.
Please allow 5–10 business days for the refund to appear on your account.
In some cases, a restocking fee may apply (if applicable, this will be disclosed during your return authorization).

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