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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

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.

Part Type

Spark Plug

Data: v4.2 - Upd: 2026-09-27 13:16:53

Specifications

Product Attributes - Brand
Autolite
Product Attributes - Manufacturer's Part Number
403
Product Attributes - Part Type
Spark Plugs
Product Attributes - Product Line
Autolite Copper Core Spark Plugs
Product Attributes - UPC
00009100004031
Product Attributes - Spark Plug Thread Size
14mm
Product Attributes - Spark Plug Reach (in.)
0.750 in.
Product Attributes - Spark Plug Reach (mm)
19.05mm
Product Attributes - Manufacturer Heat Range
3
Product Attributes - Shorty Spark Plug
No
Product Attributes - Resistor
Yes
Product Attributes - Electrode Tip Material
Copper
Product Attributes - Electrode Core Material
Copper
Product Attributes - Center Electrode Type
Non-projected
Product Attributes - Spark Plug Seat Style
Gasket
Product Attributes - Wrench Diameter
13/16 in.
Product Attributes - Ground Strap Quantity
One
Product Attributes - Quantity
Sold individually.

Reference Information

Brand Name/s Autolite
StreetFX SKU atl403
SFX Item ID 5177535
Supplier Item Code 5177535
Manufacturer SKU 403
Manufacturer UPC 9100200624
Alternative References AUT403, 14mm

Compatibility

Application Data
  • UniversalNo
    MakeALFA ROMEO
    Model1900C
    SubmodelSUPER SPRINT
    Beginning Year1957
    Ending Year1957
    Engine TypeL4
    Engine FamilyALFA ROMEO L4 GAS
    Engine Size2.0L/121
  • UniversalNo
    MakeALFA ROMEO
    Model1900
    SubmodelSUPER SPRINT
    Beginning Year1958
    Ending Year1958
    Engine TypeL4
    Engine FamilyALFA ROMEO L4 GAS
    Engine Size2.0L/121
  • UniversalNo
    MakeALFA ROMEO
    Model2000
    SubmodelSPIDER
    Beginning Year1962
    Ending Year1962
    Engine TypeL4
    Engine FamilyALFA ROMEO L4 GAS
    Engine Size2.0L/121
  • UniversalNo
    MakeALFA ROMEO
    ModelALFETTA
    SubmodelGT
    Beginning Year1975
    Ending Year1977
    Engine TypeL4
    Engine FamilyALFA ROMEO L4 GAS
    Engine Size2.0L/120
  • UniversalNo
    MakeALFA ROMEO
    ModelALFETTA
    SubmodelSPORT
    Beginning Year1975
    Ending Year1977
    Engine TypeL4
    Engine FamilyALFA ROMEO L4 GAS
    Engine Size2.0L/120
  • UniversalNo
    MakeALFA ROMEO
    ModelDUETTO 1600
    SubmodelSPIDER
    Beginning Year1968
    Ending Year1968
    Engine TypeL4
    Engine FamilyALFA ROMEO L4 GAS
    Engine Size1.6L/96
  • UniversalNo
    MakeALFA ROMEO
    ModelGIULIA
    SubmodelSPECIALE
    Beginning Year1964
    Ending Year1966
    Engine TypeL4
    Engine FamilyALFA ROMEO L4 GAS
    Engine Size1.6L/96
  • UniversalNo
    MakeALFA ROMEO
    ModelGIULIA
    SubmodelSPIDER
    Beginning Year1964
    Ending Year1967
    Engine TypeL4
    Engine FamilyALFA ROMEO L4 GAS
    Engine Size1.6L/96
  • UniversalNo
    MakeALFA ROMEO
    ModelGIULIA
    SubmodelSUPER
    Beginning Year1967
    Ending Year1968
    Engine TypeL4
    Engine FamilyALFA ROMEO L4 GAS
    Engine Size1.6L/96
  • UniversalNo
    MakeALFA ROMEO
    ModelGIULIA
    SubmodelTI
    Beginning Year1964
    Ending Year1968
    Engine TypeL4
    Engine FamilyALFA ROMEO L4 GAS
    Engine Size1.6L/96
  • UniversalNo
    MakeALFA ROMEO
    ModelGIULIA
    SubmodelTI SUPER
    Beginning Year1964
    Ending Year1965
    Engine TypeL4
    Engine FamilyALFA ROMEO L4 GAS
    Engine Size1.6L/96
  • UniversalNo
    MakeALFA ROMEO
    ModelGIULIA
    SubmodelVELOCE
    Beginning Year1964
    Ending Year1966
    Engine TypeL4
    Engine FamilyALFA ROMEO L4 GAS
    Engine Size1.6L/96
  • UniversalNo
    MakeALFA ROMEO
    ModelGTV
    SubmodelBASE
    Beginning Year1967
    Ending Year1968
    Engine TypeL4
    Engine FamilyALFA ROMEO L4 GAS
    Engine Size1.6L/96
  • UniversalNo
    MakeALFA ROMEO
    ModelSPIDER
    SubmodelVELOCE
    Beginning Year1975
    Ending Year1978
    Engine TypeL4
    Engine FamilyALFA ROMEO L4 GAS
    Engine Size2.0L/120
  • UniversalNo
    MakeALFA ROMEO
    ModelSPORT
    SubmodelBASE
    Beginning Year1978
    Ending Year1978
    Engine TypeL4
    Engine FamilyALFA ROMEO L4 GAS
    Engine Size2.0L/120
  • UniversalNo
    MakeALFA ROMEO
    ModelSPRINT
    SubmodelVELOCE
    Beginning Year1977
    Ending Year1978
    Engine TypeL4
    Engine FamilyALFA ROMEO L4 GAS
    Engine Size2.0L/120
  • UniversalNo
    MakeALVIS
    ModelTE21
    SubmodelBASE
    Beginning Year1963
    Ending Year1966
    Engine TypeL6
    Engine FamilyAlvis inline 6-cylinder
    Engine Size3.0L/182
  • UniversalNo
    MakeBMW
    Model2600
    SubmodelBASE
    Beginning Year1961
    Ending Year1963
    Engine TypeV8
    Engine FamilyBMW V8
    Engine Size2.6L/157
  • UniversalNo
    MakeBMW
    Model3200
    SubmodelBASE
    Beginning Year1961
    Ending Year1963
    Engine TypeV8
    Engine FamilyBMW V8
    Engine Size3.2L/193
  • UniversalNo
    MakeBMW
    Model3200CS
    SubmodelBASE
    Beginning Year1964
    Ending Year1965
    Engine TypeV8
    Engine FamilyBMW V8
    Engine Size3.2L/193
  • UniversalNo
    MakeBMW
    Model501A
    SubmodelBASE
    Beginning Year1954
    Ending Year1955
    Engine TypeL6
    Engine FamilyBMW inline 6-cylinder
    Engine Size2.0L/120
  • UniversalNo
    MakeBMW
    Model501
    SubmodelBASE
    Beginning Year1952
    Ending Year1955
    Engine TypeL6
    Engine FamilyBMW inline 6-cylinder
    Engine Size2.0L/120
  • UniversalNo
    MakeBMW
    Model501B
    SubmodelBASE
    Beginning Year1954
    Ending Year1955
    Engine TypeL6
    Engine FamilyBMW inline 6-cylinder
    Engine Size2.0L/120
  • UniversalNo
    MakeBMW
    Model502
    SubmodelBASE
    Beginning Year1954
    Ending Year1961
    Engine TypeV8
    Engine FamilyBMW V8
    Engine Size2.6L/157
  • UniversalNo
    MakeBMW
    Model502
    SubmodelBASE
    Beginning Year1955
    Ending Year1961
    Engine TypeV8
    Engine FamilyBMW V8
    Engine Size3.2L/193

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