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  • Autolite Copper Spark Plug – 666
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Autolite Copper Spark Plug – 666
Autolite Copper Spark Plug – 666
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Autolite Copper Spark Plug – 666

AUTOLITE
ELE1901
In stock
$5.95 $4.99
Description:The Autolite 666 Copper Spark Plug is engineered to deliver reliable ignition performance, quick starts, and...
$4.99
Autolite Copper Spark Plug – 666
Description

Description:
The Autolite 666 Copper Spark Plug is engineered to deliver reliable ignition performance, quick starts, and consistent engine power. Its copper core center electrode provides excellent thermal conductivity, helping maintain proper operating temperatures while improving resistance to fouling.

Designed with high nickel alloy center and ground electrodes, this spark plug provides enhanced durability and long service life. The high alumina multi-rib ceramic insulator supports strong electrical insulation and efficient heat dissipation, helping maintain stable combustion performance. A corrosion-resistant nickel-plated shell helps protect the spark plug from rust and wear for dependable operation over time.

Autolite copper spark plugs are designed to meet performance expectations across a wide range of gasoline engines, making them a reliable choice for everyday vehicle maintenance.

Features:

  • Copper core center electrode improves heat transfer and fouling resistance

  • High nickel alloy center and ground electrodes provide extended durability

  • Multi-rib ceramic insulator enhances electrical insulation and heat dissipation

  • Nickel-plated shell helps resist corrosion and extend spark plug life

  • Engineered for quick starts and consistent ignition performance

Product Specifications:

  • Part number: 666

  • Brand: Autolite

  • Product type: Copper spark plug

  • Center electrode core material: Copper

  • Center electrode tip material: Nickel

  • Ground electrode core material: Nickel

  • Ground electrode tip material: Nickel

  • Ground configuration: Single

  • Ground electrode quantity: 1

  • Thread diameter: 14 mm

  • Seat type: Tapered

  • Washer included: No

  • Reach: 10.95 mm

  • Hex size: 16 mm

  • Resistor type: Yes

  • Resistance: 4000 ohms

  • Pre-gap size: 0.06 in

  • Manufacturer heat range: 7

  • Insulator material: Ceramic

  • Center electrode design: Standard

  • Center electrode projection: Mid projection

  • Electrical terminal type: Non-removable nut

  • Skirt: No

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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
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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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