Autolite AP646DP2 Spark Plug

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Rating

3.2 / 5 Overall
Autolite	AP646DP2
Brand	Code
3.5 / 5 Materials
Copper	Platinum
Ground electrode	Center electrode
2.5 / 5 Design
Standard	Necked Down
Ground type	Center type

Specifications

1.3mm (.050")	12
Gap	Heat range
⌀14mm	1.25mm
Thread diameter	Thread pitch
19mm (3/4")	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

GR45GP

Copper-Platinum

3.5/ 5

.059"19mm, ⌀14x1.25HR 4

Deep reference (3)

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

APP646

Platinum

3.5/ 5

.050"19mm, ⌀14x1.25HR 12

WR8LPP30V

Copper-Platinum

3.5/ 5

.050"19mm, ⌀14x1.25HR 8

AP646

Copper-Platinum

-

3.2/ 5

.050"19mm, ⌀14x1.25HR 12

Same specs (7)

Products that have identical characteristics that impact interchangability

XP646

Iridium-Platinum

4.2/ 5

.050"19mm, ⌀14x1.25HR 12

XP646DP2

Iridium-Platinum

4.2/ 5

.050"19mm, ⌀14x1.25HR 12

APP646

Platinum

3.5/ 5

.050"19mm, ⌀14x1.25HR 12

AP646

Copper-Platinum

-

3.2/ 5

.050"19mm, ⌀14x1.25HR 12

646

Copper

2.9/ 5

.050"19mm, ⌀14x1.25HR 12

646BP

Copper

2.9/ 5

.050"19mm, ⌀14x1.25HR 12

646DP2

Copper

2.9/ 5

.050"19mm, ⌀14x1.25HR 12

Two steps colder (1)

Two steps colder spark plugs with same characteristics for heavily modified engines (150-200 hp increase)

WR10LCV

Copper

2.9/ 5

.050"19mm, ⌀14x1.25HR 10