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Description:
The Champion Copper Plus RJ6C Spark Plug is designed to deliver dependable ignition performance, reliable heat control, and long service life across a wide range of automotive and specialty engine applications. Built with a copper core center electrode, this spark plug improves conductivity and helps provide accurate heat range control for reduced wear and consistent operation.
As part of the Champion Copper Plus line, the RJ6C offers strong corrosion resistance and is built to ISO and SAE standards for proven performance. Its resistor design helps reduce electrical interference, while the removable nut terminal adds flexibility for different installation needs. Designed as a standard replacement spark plug, it is well suited for older gasoline engines and diverse vehicle applications.
Features:
Copper core center electrode for improved conductivity and heat control
Dependable Champion Copper Plus performance and durability
Resistor design helps reduce electrical interference
Superior corrosion resistance for longer service life
Built to ISO and SAE standards for proven performance
Removable nut terminal for installation flexibility
Flat seat design for secure fit in compatible applications
Product Specifications:
Part number: 102
Plug type: RJ6C
Classification: Champion Copper Plus
Grade type: Standard Replacement
Part description: Spark Plug
Center electrode tip material: Nickel
Center electrode design: Standard
Center electrode diameter: 0.1 in
Ground electrode material: Nickel copper alloy
Ground electrode core material: Nickel
Ground electrode tip material: Nickel
Ground electrode tip design: Standard
Ground electrode quantity: 1
Pre-gap size: 0.030 in / 0.76 mm
Hex size: 0.813 in / 20.650 mm
Seat type: Flat
Reach: 0.375 in
Thread diameter: 0.551 in / 14.000 mm
Resistor type: Yes
Electrical terminal type: Removable Nut
Installed height: 2.15 in
Taper diameter: 0.33 in
Manufacturer heat range: 6
Subject to Prop 65: No
Fitment:
The provided application data shows fitment across a wide range of makes and models, including select applications for:
Bizzarrini GT America, GT Strada 5300
Buick Century, Roadmaster, Skylark, Special, Super
Chevrolet Bel Air, Biscayne, Brookwood, C/K pickups and Suburbans, Camaro, Caprice, Chevelle, Corvette, El Camino, Estate, Impala, Kingswood, Monte Carlo, Sedan Delivery, Suburban, Townsman, Truck
Dodge W300 Series, Wm300 Pickup
Fargo F100, FK8, FL8, FW100 models
GMC 1000/1500/2500/3000/3500 series, C/K pickups and Suburbans, G vans, L3500, Suburban
International 100/1010/1110/1210/1310/1500 series, Scout, Scout II, Travelall, numerous truck and chassis models
Pontiac Laurentian, Parisienne, Star Chief, Strato-Chief
Zundapp Janus 250
Because the supplied data already includes a detailed fitment list, that full application chart should remain attached to the product page for lookup accuracy.
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.
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).
