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Description:
The Autolite 103 Copper Spark Plug is engineered to deliver reliable ignition performance, quick starts, and consistent engine power. Designed with a copper core center electrode, this spark plug improves thermal control and helps resist fouling, supporting smooth engine operation and dependable performance.
A high nickel alloy center and ground electrode helps extend service life and maintain stable spark delivery. The multi-rib high alumina ceramic insulator provides strong electrical insulation and efficient heat dissipation for improved durability. A nickel-plated shell helps resist corrosion, ensuring long-lasting reliability in a wide range of automotive applications.
Autolite copper spark plugs are designed as dependable replacements that meet performance expectations for many engines.
Features:
Copper core center electrode improves heat transfer and thermal control
High nickel alloy center and ground electrodes help extend service life
Multi-rib high alumina ceramic insulator for superior insulation and strength
Nickel-plated shell helps resist corrosion and improve durability
Designed for quick starts and reliable ignition performance
Product Specifications:
Part number: 103
Brand: Autolite
Product type: Copper spark plug
Center electrode core material: Copper
Center electrode tip material: Nickel
Ground electrode tip material: Nickel
Ground electrode configuration: Single
Ground electrode quantity: 1
Seat type: Tapered
Reach: 17.25 mm
Hex size: 16 mm
Resistor type: Yes
Resistance: 4000 ohms
Pre-gap size: 1.27 mm
Insulator material: Ceramic
Electrode projection: Mid projection
Electrical terminal type: Non-removable nut
Washer included: No
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).
