Autolite AP404 Spark Plug

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Rating

3.2 / 5 Overall
Autolite	AP404
Brand	Code
3.5 / 5 Materials
Copper	Platinum
Ground electrode	Center electrode
2.5 / 5 Design
Standard	Necked Down
Ground type	Center type

Specifications

0.9mm (.035")	9
Gap	Heat range
⌀14mm	1.25mm
Thread diameter	Thread pitch
19mm (3/4")	21mm (13/16")
Reach	Hex size
Gasket	Removable Nut
Seat	Terminal
1	Non-Projected
Ground count	Projection

Cross-reference and alternatives

Cross-reference (4)

Alternative spark plugs found in cross-reference docs provided by manufacturers

BUR6EBVX-11

Copper-Platinum

3.5/ 5

.043"19mm, ⌀14x1.25HR 6

WR7CPX+

Copper-Platinum

3.3/ 5

.043"19mm, ⌀14x1.25HR 7

WR7CPX

Copper-Platinum

3.3/ 5

.043"19mm, ⌀14x1.25HR 7

BUR6EB-11

Copper

2.9/ 5

.043"19mm, ⌀14x1.25HR 6

Deep reference (6)

A second level of cross-reference: if A=B and B=C, then A=C

AP403

Copper-Platinum

-

3.2/ 5

.035"19mm, ⌀14x1.25HR 7

BR6ES

Copper

2.9/ 5

.035"19mm, ⌀14x1.25HR 6

BR6ES

Copper

2.9/ 5

.035"19mm, ⌀14x1.25HR 6

BR6ES-11

Copper

2.9/ 5

.043"19mm, ⌀14x1.25HR 6

W20EKR-S11

Copper

2.9/ 5

.043"19mm, ⌀14x1.25HR 20

404

Copper

2.9/ 5

.035"19mm, ⌀14x1.25HR 9

Same specs (6)

Products that have identical characteristics that impact interchangability

AP403

Copper-Platinum

-

3.2/ 5

.035"19mm, ⌀14x1.25HR 7

403

Copper

2.9/ 5

.035"19mm, ⌀14x1.25HR 7

403BP

Copper

2.9/ 5

.035"19mm, ⌀14x1.25HR 7

404

Copper

2.9/ 5

.035"19mm, ⌀14x1.25HR 9

404BP

Copper

2.9/ 5

.035"19mm, ⌀14x1.25HR 9

405

Copper

2.9/ 5

.035"19mm, ⌀14x1.25HR 10