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Autolite Copper Core Spark Plugs 403 Plug, Core, Gasket Seat, 14mm Thread, 0.750 in. Reach, Resistor, Each

SKU: ATL403

Spark Plugs

Autolite Copper Core Spark Plugs 403 Plug, Core, Gasket Seat, 14mm Thread, 0.750 in. Reach, Resistor, Each

SKU: ATL403

Spark Plugs
A$12.48
BACKORDER This item will be special ordered in for you. Contact us prior to purchase if you require an ETA.

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Description

Spark Plug - 14 mm Thread - 0.750 in Reach - Gasket Seat - Resistor - Each


Data: v2 - Desc: v4.2 - Upd: 2026-11-07 16:41:20

Data: v4.2 - Upd: 2026-11-07 23:56:38

Features

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Specifications

Reference Information

Reference Data (Provide these details to our support team)
Brand Name/s Autolite
StreetFX SKU atl403
SFX Item ID 5177535
Accounting SKU atl-403
Manufacturer SKU 403
Manufacturer UPC 009100200624
Alternative References ATL-403, AUT403

Spark Plug, Copper Core, Gasket Seat, 14mm Thread, 0.750 in. Reach, Resistor, Each

Autolite copper core spark plugs feature a cold-formed steel shell with precision-rolled threads, a full copper core electrode for better performance, and a one-piece terminal post to add strength. The ignition plugs use a copper-glass seal that bonds the insulator and terminal post center electrode together. This ensures full voltage at the spark gap and a 100 percent leak-proof, gas-tight seal. Autolite features an extensive application guide to cover just about everything with an internal combustion engine. Keep your engine running smoothly and reliably with Autolite replacement copper core spark plugs.

Product Attributes
BrandAutolite
Manufacturer's Part Number403
Part TypeSpark Plugs
Product LineAutolite Copper Core Spark Plugs
UPC00009100004031
Spark Plug Thread Size14mm
Spark Plug Reach (in.)0.750 in.
Spark Plug Reach (mm)19.05mm
Manufacturer Heat Range3
Shorty Spark PlugNo
ResistorYes
Electrode Tip MaterialCopper
Electrode Core MaterialCopper
Center Electrode TypeNon-projected
Spark Plug Seat StyleGasket
Wrench Diameter13/16 in.
Ground Strap QuantityOne
QuantitySold individually.

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