Autolite AP303 Spark Plug

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Rating

3.2 / 5 Overall
Autolite	AP303
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")	4
Gap	Heat range
⌀14mm	1.25mm
Thread diameter	Thread pitch
9.5mm (3/8")	21mm (13/16")
Reach	Hex size
Gasket	Solid
Seat	Terminal
1	Non-Projected
Ground count	Projection

Cross-reference and alternatives

Cross-reference (1)

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

XR5

Copper

3.1/ 5

.039"9.5mm, ⌀14x1.25HR 5

Deep reference (3)

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

W20PR-U

Copper

3.3/ 5

.028"9.5mm, ⌀14x1.25HR 20

14C2

Copper

2.9/ 5

.035"9.5mm, ⌀14x1.25HR 12

RJ12YC

Copper

2.9/ 5

.035"9.5mm, ⌀14x1.25HR 12

Same specs (3)

Products that have identical characteristics that impact interchangability

303

Copper

2.9/ 5

.035"9.5mm, ⌀14x1.25HR 4

306

Copper

2.9/ 5

.035"9.5mm, ⌀14x1.25HR 8

308

Copper

2.9/ 5

.035"9.5mm, ⌀14x1.25HR 9