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  • Champion Copper Plus Spark Plug 308
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Champion Copper Plus Spark Plug 308
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Champion Copper Plus Spark Plug 308

CHAMPION
ELE1958
In stock
$3.89 $2.99
Description The Champion Copper Plus Spark Plug 308 is engineered to deliver dependable ignition performance and...
$2.99
Champion Copper Plus Spark Plug 308
Description

Description

The Champion Copper Plus Spark Plug 308 is engineered to deliver dependable ignition performance and long-lasting durability in compatible automotive 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.

Built to ISO and SAE standards, the Champion Copper Plus line is designed for proven replacement performance. Its copper core construction helps maintain the proper heat range for extended service life, while superior corrosion resistance supports durability in demanding operating conditions.

With a flat seat, crush washer, resistor design, and factory pre-gap of 0.044 in (1.12 mm), the RN12MC4 is a reliable replacement spark plug for select BMW, Chrysler, Dodge, Mitsubishi, and Toyota 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 extended service life

  • Resistor design supports reliable ignition performance

  • Pre-gapped design for easier installation

Specifications

  • Brand: Champion Spark Plugs

  • Part Number: 308

  • Plug Type: RN12MC4

  • Classification: Champion Copper Plus

  • Part Description: Spark Plug

  • Ground Electrode Core Material: Nickel

  • Center Electrode Tip Material: Nickel

  • Washer Included: Yes

  • Washer Type: Crush

  • Electrical Terminal Type: Non-Removable Nut

  • Pre-Gap Size: 0.044 in / 1.12 mm

  • Ground Electrode Quantity: 1

  • Hex Size: 0.813 in / 20.650 mm

  • Insulator Height: 0.12 in

  • Manufacturer Heat Range: 12

  • Seat Type: Flat

  • Reach: 0.75 in

  • Thread Diameter: 0.551 in / 14.000 mm

  • Resistor Type: Yes

  • Hex Type: Hex

  • Indexed: No

Fitment

  • BMW 325i

  • BMW 325iX

  • BMW 325is

  • BMW 528e

  • BMW 535i

  • BMW 635CSi

  • BMW L6

  • BMW L7

  • Chrysler Concorde

  • Chrysler Intrepid

  • Dodge Intrepid

  • Mitsubishi Mirage

  • Toyota Celica

  • Toyota Cressida

  • Toyota Starlet

  • Toyota Tercel

  • Toyota Van

  • Toyota Van Wagon

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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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