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  • Autolite Double Platinum Spark Plug – APP5243
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Autolite Double Platinum Spark Plug – APP5243
Autolite Double Platinum Spark Plug – APP5243
Load image into Gallery viewer, Autolite Double Platinum Spark Plug – APP5243
Load image into Gallery viewer, Autolite Double Platinum Spark Plug – APP5243

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Autolite Double Platinum Spark Plug – APP5243

AUTOLITE
ELE1924
In stock
$16.45 $15.99
Description:The Autolite APP5243 Double Platinum Spark Plug is designed to deliver reliable ignition performance, reduced misfires,...
$15.99
Autolite Double Platinum Spark Plug – APP5243
Description

Description:
The Autolite APP5243 Double Platinum Spark Plug is designed to deliver reliable ignition performance, reduced misfires, and extended service life. Its platinum-to-platinum firing design features platinum pads on both the center and ground electrodes to minimize gap erosion and maintain consistent spark performance over time.

The copper core center electrode helps improve heat transfer, supporting proper operating temperatures and reducing fouling. A yttrium-enhanced ground electrode increases durability under high temperatures and engine pressures, making this spark plug well suited for distributorless ignition system (DIS) engines. The high alumina ceramic insulator provides excellent thermal conductivity and dielectric strength, while the multi-rib insulator helps prevent flash-over for consistent ignition.

Autolite double platinum spark plugs provide dependable performance and long service intervals for many gasoline engine applications.

Features:

  • Platinum-to-platinum firing design helps reduce gap erosion and extend spark plug life

  • Copper core center electrode improves heat transfer and fouling resistance

  • Yttrium-enhanced ground electrode increases durability under high heat and pressure

  • High alumina ceramic insulator improves insulation and heat dissipation

  • Multi-rib insulator helps prevent flash-over for reliable ignition performance

Product Specifications:

  • Part number: APP5243

  • Brand: Autolite

  • Product type: Double platinum spark plug

  • Center electrode core material: Copper

  • Center electrode tip material: Platinum

  • Ground electrode core material: Nickel

  • Ground electrode tip material: Platinum

  • Ground configuration: Single

  • Ground electrode quantity: 1

  • Thread diameter: 14 mm

  • Seat type: Tapered

  • Washer included: No

  • Reach: 17.25 mm (0.679 in)

  • Hex size: 16 mm

  • Resistor type: Yes

  • Resistance: 4000 ohms

  • Pre-gap size: 1.1176 mm (0.044 in)

  • Manufacturer heat range: 10

  • Insulator material: Ceramic

  • Center electrode design: Standard

  • Center electrode projection: Long projection

  • Electrical terminal type: Non-removable nut

  • Skirt: Yes

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After this time, we cannot be held responsible for lost or damaged items.

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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.

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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.

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Contact our Customer Support team to request a Return Authorization (RMA) before sending items back.
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Customers are responsible for return shipping costs unless the item was defective or incorrect.

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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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