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  • Autolite Copper Spark Plug – 646
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Autolite Copper Spark Plug – 646
Autolite Copper Spark Plug – 646
Load image into Gallery viewer, Autolite Copper Spark Plug – 646
Load image into Gallery viewer, Autolite Copper Spark Plug – 646

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Autolite Copper Spark Plug – 646

AUTOLITE
ELE1898
In stock
$6.25 $5.99
Description:The Autolite 646 Copper Spark Plug is designed to deliver reliable ignition performance, quick engine starts,...
$5.99
Autolite Copper Spark Plug – 646
Description

Description:
The Autolite 646 Copper Spark Plug is designed to deliver reliable ignition performance, quick engine starts, and consistent power for a wide range of gasoline engines. Its copper core center electrode improves heat transfer, helping maintain proper operating temperatures while reducing the risk of fouling.

Engineered with high nickel alloy center and ground electrodes, this spark plug offers enhanced durability and longer service life. The high alumina multi-rib ceramic insulator provides excellent thermal conductivity and electrical insulation for dependable performance under demanding conditions. A corrosion-resistant nickel-plated shell helps protect against rust and ensures long-lasting durability.

Autolite copper spark plugs are built to meet the performance expectations of many vehicles and small engines, making them a dependable option for routine maintenance and replacement.

Features:

  • Copper core center electrode improves heat transfer and fouling resistance

  • High nickel alloy center and ground electrodes help extend spark plug life

  • Multi-rib ceramic insulator improves strength and electrical insulation

  • Nickel-plated shell helps resist corrosion and increase durability

  • Designed for dependable ignition performance and quick starts

Product Specifications:

  • Part number: 646

  • 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 electrode configuration: Single

  • Ground electrode quantity: 1

  • Thread diameter: 14 mm

  • Seat type: Flat

  • Reach: 0.75 in

  • Hex size: 21 mm

  • Resistor type: Yes

  • Resistance: 4000 ohms

  • Pre-gap size: 1.27 mm

  • Manufacturer heat range: 8

  • Insulator material: Ceramic

  • Center electrode design: Standard

  • Center electrode projection: Mid projection

  • Center electrode insulator tip projection: Mid projection

  • Electrical terminal type: Non-removable nut

  • Washer included: Yes

  • Skirt: Yes

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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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