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Autolite Copper Spark Plug – 4303
Autolite Copper Spark Plug – 4303
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Load image into Gallery viewer, Autolite Copper Spark Plug – 4303

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Autolite Copper Spark Plug – 4303

AUTOLITE
ELE1893
In stock
$6.55 $5.99
Description:The Autolite 4303 Copper Spark Plug is engineered to deliver dependable ignition performance, quick engine starts,...
$5.99
Autolite Copper Spark Plug – 4303
Description

Description:
The Autolite 4303 Copper Spark Plug is engineered to deliver dependable ignition performance, quick engine starts, and consistent power. Its copper core center electrode provides excellent heat transfer, helping maintain proper operating temperatures and improving resistance to fouling.

Durable high nickel alloy center and ground electrodes extend spark plug life while maintaining stable spark delivery. The multi-rib high alumina ceramic insulator enhances electrical insulation and heat dissipation, ensuring reliable performance even under demanding operating conditions. A corrosion-resistant nickel-plated shell further protects against rust and wear, helping ensure long-lasting durability.

Autolite copper spark plugs are designed to meet performance expectations for a wide range of gasoline engines, making them a dependable replacement for routine maintenance.

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 electrical insulation and durability

  • Nickel-plated shell helps resist corrosion and increase service life

  • Designed for quick starts and consistent ignition performance

Product Specifications:

  • Part number: 4303

  • 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: 10 mm

  • Thread size: M10 × 1.0

  • Seat type: Flat

  • Washer type: Flat washer

  • Washer included: Yes

  • Reach: 0.75 in (19 mm)

  • Hex size: 5/8 in

  • Resistor type: Yes

  • Resistance: 5000 ohms

  • Manufacturer heat range: 14

  • Insulator material: Ceramic

  • Center electrode design: Standard

  • Center electrode projection: Short projection

  • Center electrode insulator tip projection: 0.5 mm

  • Electrical terminal type: Removable nut

  • Skirt: Yes

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Orders placed after 3:00 PM EST may ship the following business day.

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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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