Champion H12 Spark Plug

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Rating

2.9 / 5 Overall
Champion	H12
Brand	Code
3.0 / 5 Materials
Copper	Copper
Ground electrode	Center electrode
2.8 / 5 Design
Standard	Standard
Ground type	Center type

Specifications

0.75mm (.030")	12
Gap	Heat range
⌀14mm	1.25mm
Thread diameter	Thread pitch
11mm (7/16")	21mm (13/16")
Reach	Hex size
Gasket	Solid
Seat	Terminal
1	Non-Projected
Ground count	Projection

Cross-reference and alternatives

Cross-reference (5)

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

B-4L

Copper

3.1/ 5

.028"11.6mm, ⌀14x1.25HR 4

W14L

Copper

-

2.9/ 5

.028"11mm, ⌀14x1.25HR 14

216

Copper

-

2.9/ 5

.030"11mm, ⌀14x1.25HR 2

4316

Copper

-

2.9/ 5

.031"11mm, ⌀14x1.25HR 2

B-6L

Copper

-

2.9/ 5

.028"11.6mm, ⌀14x1.25HR 6

Deep reference (37)

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

B-4L

Copper

3.1/ 5

.028"11.6mm, ⌀14x1.25HR 4

B-4L

Copper

3.1/ 5

.028"11.6mm, ⌀14x1.25HR 4

B-4L

Copper

3.1/ 5

.028"11.6mm, ⌀14x1.25HR 4

437

Copper

-

2.9/ 5

.033"11mm, ⌀14x1.25HR 3

RH18Y

Copper

-

2.9/ 5

.026"11mm, ⌀14x1.25HR 18

W14L

Copper

-

2.9/ 5

.028"11mm, ⌀14x1.25HR 14

216

Copper

-

2.9/ 5

.030"11mm, ⌀14x1.25HR 2

4316

Copper

-

2.9/ 5

.031"11mm, ⌀14x1.25HR 2

216

Copper

-

2.9/ 5

.030"11mm, ⌀14x1.25HR 2

437

Copper

-

2.9/ 5

.033"11mm, ⌀14x1.25HR 3

H10C

Copper

-

2.9/ 5

.030"11mm, ⌀14x1.25HR 10

H10C

Copper

-

2.9/ 5

.030"11mm, ⌀14x1.25HR 10

H8C

Copper

-

2.9/ 5

.024"11mm, ⌀14x1.25HR 8

RH10C

Copper

-

2.9/ 5

.030"11mm, ⌀14x1.25HR 10

RH12

Copper

-

2.9/ 5

.030"11mm, ⌀14x1.25HR 12

RH8C

Copper

-

2.9/ 5

.024"11mm, ⌀14x1.25HR 8

W14L

Copper

-

2.9/ 5

.028"11mm, ⌀14x1.25HR 14

W16LS

Copper

-

2.9/ 5

.028"11mm, ⌀14x1.25HR 16

B-6L

Copper

-

2.9/ 5

.028"11.6mm, ⌀14x1.25HR 6

B-2

Copper

-

2.9/ 5

.028"9.5mm, ⌀14x1.25HR 2

H10C

Copper

-

2.9/ 5

.030"11mm, ⌀14x1.25HR 10

H8C

Copper

-

2.9/ 5

.024"11mm, ⌀14x1.25HR 8

RH10C

Copper

-

2.9/ 5

.030"11mm, ⌀14x1.25HR 10

RH12

Copper

-

2.9/ 5

.030"11mm, ⌀14x1.25HR 12

RH8C

Copper

-

2.9/ 5

.024"11mm, ⌀14x1.25HR 8

B-6L

Copper

-

2.9/ 5

.028"11.6mm, ⌀14x1.25HR 6

216

Copper

-

2.9/ 5

.030"11mm, ⌀14x1.25HR 2

844-1

Copper

-

2.9/ 5

.030"11mm, ⌀14x1.25HR 10

H10C

Copper

-

2.9/ 5

.030"11mm, ⌀14x1.25HR 10

H8C

Copper

-

2.9/ 5

.024"11mm, ⌀14x1.25HR 8

RH10C

Copper

-

2.9/ 5

.030"11mm, ⌀14x1.25HR 10

RH12

Copper

-

2.9/ 5

.030"11mm, ⌀14x1.25HR 12

RH8C

Copper

-

2.9/ 5

.024"11mm, ⌀14x1.25HR 8

W16LS

Copper

-

2.9/ 5

.028"11mm, ⌀14x1.25HR 16

4316

Copper

-

2.9/ 5

.031"11mm, ⌀14x1.25HR 2

H14Y

Copper

-

2.9/ 5

.035"11mm, ⌀14x1.25HR 14

844S

Copper

-

2.9/ 5

.030"11mm, ⌀14x1.25HR 10

Same specs (1)

Products that have identical characteristics that impact interchangability

RH12

Copper

-

2.9/ 5

.030"11mm, ⌀14x1.25HR 12

One step colder (4)

Colder spark plugs with same characteristics for moderately tuned engines (75–100 hp increase)

844-1

Copper

-

2.9/ 5

.030"11mm, ⌀14x1.25HR 10

844S

Copper

-

2.9/ 5

.030"11mm, ⌀14x1.25HR 10

H10C

Copper

-

2.9/ 5

.030"11mm, ⌀14x1.25HR 10

RH10C

Copper

-

2.9/ 5

.030"11mm, ⌀14x1.25HR 10