Champion RN12MC4 Spark Plug

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Rating

2.9 / 5 Overall
Champion	RN12MC4
Brand	Code
3.0 / 5 Materials
Copper	Copper
Ground electrode	Center electrode
2.8 / 5 Design
Standard	Standard
Ground type	Center type

Specifications

1mm (.039")	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 (6)

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

VW16

Iridium-Platinum

4.2/ 5

.043"19mm, ⌀14x1.25HR 16

XS65

Iridium-Platinum

4.2/ 5

.035"19mm, ⌀14x1.25HR 10

XST4265

Iridium-Platinum

4.2/ 5

.035"19mm, ⌀14x1.25HR 10

W16EXR-U11

Copper

3.3/ 5

.043"19mm, ⌀14x1.25HR 16

BPR5EY-11

Copper

3.1/ 5

.043"19mm, ⌀14x1.25HR 5

4265

Copper

-

2.9/ 5

.035"19mm, ⌀14x1.25HR 10

Deep reference (75)

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

VW16

Iridium-Platinum

4.2/ 5

.043"19mm, ⌀14x1.25HR 16

W16EXZU

Copper-Platinum

3.9/ 5

.028"19mm, ⌀14x1.25HR 16

W16EXZU

Copper-Platinum

3.9/ 5

.028"19mm, ⌀14x1.25HR 16

BPR5EIX

Copper-Iridium

3.8/ 5

.031"19mm, ⌀14x1.25HR 5

GR5IX

Copper-Iridium

3.8/ 5

.039"19mm, ⌀14x1.25HR 5

GR4IX OSN

Copper-Iridium

3.8/ 5

.039"19mm, ⌀14x1.25HR 4

BPR5EIX

Copper-Iridium

3.8/ 5

.031"19mm, ⌀14x1.25HR 5

GR4IX OSN

Copper-Iridium

3.8/ 5

.039"19mm, ⌀14x1.25HR 4

RN14PMP5

Platinum

3.6/ 5

.049"19mm, ⌀14x1.25HR 14

WGR8DQP

Copper-Platinum

3.5/ 5

.063"19mm, ⌀14x1.25HR 8

BPR5EGP

Copper-Platinum

3.5/ 5

.039"19mm, ⌀14x1.25HR 5

WR8DPX

Copper-Platinum

3.3/ 5

.043"19mm, ⌀14x1.25HR 8

WR9DPX

Copper-Platinum

3.3/ 5

.043"19mm, ⌀14x1.25HR 9

242225538

Copper-Silver

3.3/ 5

.024"19mm, ⌀14x1.25HR 9

242225539

Copper-Silver

3.3/ 5

.028"19mm, ⌀14x1.25HR 9

RN14PMC3

Copper-Platinum

3.3/ 5

.030"19mm, ⌀14x1.25HR 14

W14EPR-U

Copper

3.3/ 5

.031"19mm, ⌀14x1.25HR 14

W16EPR-U

Copper

3.3/ 5

.031"19mm, ⌀14x1.25HR 16

W16EPR-U10

Copper

3.3/ 5

.039"19mm, ⌀14x1.25HR 16

W14EPR-U

Copper

3.3/ 5

.031"19mm, ⌀14x1.25HR 14

W16EXR-U11

Copper

3.3/ 5

.043"19mm, ⌀14x1.25HR 16

W16EPR-U

Copper

3.3/ 5

.031"19mm, ⌀14x1.25HR 16

W16EPR-U10

Copper

3.3/ 5

.039"19mm, ⌀14x1.25HR 16

5322

Copper

3.2/ 5

.030"19mm, ⌀14x1.25HR 11

5322

Copper

3.2/ 5

.030"19mm, ⌀14x1.25HR 11

5322

Copper

3.2/ 5

.030"19mm, ⌀14x1.25HR 11

BP5EY

Copper

3.1/ 5

.035"19mm, ⌀14x1.25HR 5

BPR4EY

Copper

3.1/ 5

.035"19mm, ⌀14x1.25HR 4

BPR5EKU

Copper

3.1/ 5

.028"19mm, ⌀14x1.25HR 5

BPR5EY

Copper

3.1/ 5

.031"19mm, ⌀14x1.25HR 5

GR45

Copper

3.1/ 5

.059"19mm, ⌀14x1.25HR 4

GR5

Copper

3.1/ 5

.039"19mm, ⌀14x1.25HR 5

ZGR5A

Copper

3.1/ 5

.035"19mm, ⌀14x1.25HR 5

ZGR5C

Copper

3.1/ 5

.035"19mm, ⌀14x1.25HR 5

BPR4EY OSN

Copper

3.1/ 5

.035"19mm, ⌀14x1.25HR 4

BPR4EY

Copper

3.1/ 5

.035"19mm, ⌀14x1.25HR 4

BPR5EY

Copper

3.1/ 5

.031"19mm, ⌀14x1.25HR 5

BPR5EY-11

Copper

3.1/ 5

.043"19mm, ⌀14x1.25HR 5

WR10LCV

Copper

-

2.9/ 5

.050"19mm, ⌀14x1.25HR 10

WR9DCX

Copper

-

2.9/ 5

.043"19mm, ⌀14x1.25HR 9

WR9LCX

Copper

-

2.9/ 5

.043"19mm, ⌀14x1.25HR 9

BP4ES

Copper

-

2.9/ 5

.031"19mm, ⌀14x1.25HR 4

BP5EA-L

Copper

-

2.9/ 5

.035"19mm, ⌀14x1.25HR 5

BP5ES

Copper

-

2.9/ 5

.031"19mm, ⌀14x1.25HR 5

BPR4ES

Copper

-

2.9/ 5

.031"19mm, ⌀14x1.25HR 4

BPR5ES

Copper

-

2.9/ 5

.035"19mm, ⌀14x1.25HR 5

4265

Copper

-

2.9/ 5

.035"19mm, ⌀14x1.25HR 10

646

Copper

-

2.9/ 5

.050"19mm, ⌀14x1.25HR 12

66

Copper

-

2.9/ 5

.035"19mm, ⌀14x1.25HR 12

N11YC

Copper

-

2.9/ 5

.031"19mm, ⌀14x1.25HR 11

N12YC

Copper

-

2.9/ 5

.031"19mm, ⌀14x1.25HR 12

RN14MC5

Copper

-

2.9/ 5

.049"19mm, ⌀14x1.25HR 14

RN16YC5

Copper

-

2.9/ 5

.049"19mm, ⌀14x1.25HR 16

WR8DC+ NS

Copper

-

2.9/ 5

.031"19mm, ⌀14x1.25HR 8

WR8DC+

Copper

-

2.9/ 5

.031"19mm, ⌀14x1.25HR 8

N12YC

Copper

-

2.9/ 5

.031"19mm, ⌀14x1.25HR 12

BP4ES

Copper

-

2.9/ 5

.031"19mm, ⌀14x1.25HR 4

BPR4ES

Copper

-

2.9/ 5

.031"19mm, ⌀14x1.25HR 4

WR8DC+ NS

Copper

-

2.9/ 5

.031"19mm, ⌀14x1.25HR 8

WR7DC+

Copper

-

2.9/ 5

.031"19mm, ⌀14x1.25HR 7

WR8DC+

Copper

-

2.9/ 5

.031"19mm, ⌀14x1.25HR 8

WR7DC

Copper

-

2.9/ 5

.043"19mm, ⌀14x1.25HR 7

N12YC

Copper

-

2.9/ 5

.031"19mm, ⌀14x1.25HR 12

BPR4ES

Copper

-

2.9/ 5

.031"19mm, ⌀14x1.25HR 4

308C2

Copper

-

2.9/ 5

.039"19mm, ⌀14x1.25HR 12

WR8DC+ NS

Copper

-

2.9/ 5

.031"19mm, ⌀14x1.25HR 8

WR7DC+

Copper

-

2.9/ 5

.031"19mm, ⌀14x1.25HR 7

WR8DC+

Copper

-

2.9/ 5

.031"19mm, ⌀14x1.25HR 8

WR7DC

Copper

-

2.9/ 5

.043"19mm, ⌀14x1.25HR 7

BP4ES

Copper

-

2.9/ 5

.031"19mm, ⌀14x1.25HR 4

BPR4ES

Copper

-

2.9/ 5

.031"19mm, ⌀14x1.25HR 4

BPR5ES

Copper

-

2.9/ 5

.035"19mm, ⌀14x1.25HR 5

BP5ES

Copper

-

2.9/ 5

.031"19mm, ⌀14x1.25HR 5

WR9DCY

Copper

2.7/ 5

.059"19mm, ⌀14x1.25HR 9

WR9DCY

Copper

2.7/ 5

.059"19mm, ⌀14x1.25HR 9

Same specs (2)

Products that have identical characteristics that impact interchangability

308C2

Copper

-

2.9/ 5

.039"19mm, ⌀14x1.25HR 12

308CC

Copper

-

2.9/ 5

.039"19mm, ⌀14x1.25HR 12

Bigger gap (1)

0.1..0.3 mm gap increase for better performance given your ignition system can handle it

QL16CR11

Copper

-

2.9/ 5

.043"19mm, ⌀14x1.25HR 16