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Champion Copper Plus Spark Plug 400
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Champion Copper Plus Spark Plug 400

CHAMPION
ELE1966
In stock
$5.50 $4.99
Description The Champion Copper Plus Spark Plug 400 is engineered to deliver dependable ignition performance and...
$4.99
Champion Copper Plus Spark Plug 400
Description

Description

The Champion Copper Plus Spark Plug 400 is engineered to deliver dependable ignition performance and reliable service life across a wide range of automotive, marine, and small engine applications. Featuring a copper core center electrode, this spark plug provides increased conductivity and accurate heat control to support consistent combustion and good overall wear.

As part of the Champion Copper Plus Small Engine line, the RV9YC is designed as an OE-type replacement plug that resists fouling and provides durable ignition performance in demanding environments. Its copper core construction helps maintain proper heat range control for longer life, while superior corrosion resistance supports reliable operation over time.

Built to ISO and SAE standards, this spark plug features a tapered seat, removable nut terminal, resistor design, and a factory pre-gap of 0.035 in (0.89 mm) for dependable installation and consistent replacement performance.

Features

  • Copper core center electrode improves conductivity and heat control

  • OE-type replacement plug for dependable ignition performance

  • Resists fouling for more consistent engine operation

  • Superior corrosion resistance for long service life

  • Built to ISO and SAE standards for proven performance

  • Champion Copper Plus Small Engine design for reliable replacement use

Specifications

  • Brand: Champion

  • Part Number: 400

  • Plug Type: RV9YC

  • Classification: Champion Copper Plus Small Engine

  • Grade Type: Standard Replacement

  • Part Description: Spark Plug

  • Center Electrode Tip Material: Nickel

  • Center Electrode Design: Standard

  • Center Electrode Diameter: 0.10 in

  • Ground Electrode Quantity: 1

  • Ground Electrode Core Material: Nickel

  • Ground Electrode Tip Material: Nickel

  • Ground Electrode Material: Nickel Copper Alloy

  • Pre-Gap Size: 0.035 in / 0.89 mm

  • Hex Size: 0.625 in / 15.880 mm

  • Insulator Height: 0.06 in

  • Manufacturer Heat Range: 9

  • Seat Type: Tapered

  • Reach: 0.441 in

  • Thread Diameter: 0.551 in / 14.000 mm

  • Resistor Type: Yes

  • Washer Included: No

  • Electrical Terminal Type: Removable Nut

  • Hex Type: Hex

  • Indexed: No

  • Installed Height: 2.20 in

  • Insulator Projection: 0.06 in

  • Taper Diameter: 0.31 in

  • Subject to Prop 65: No

Fitment

  • Fits a wide range of Buick, Chevrolet, Excalibur, Ford, GMC, Oldsmobile, Pontiac, and Chrysler Marine automotive and marine applications.

  • Also fits select Daewoo, Volvo Penta, Crusader Marine, Mercruiser, Flagship Marine, Kodiak, Indmar Marine, Chris-Craft, PCM, and Hustler marine and industrial engine 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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