Champion QC12YC Spark Plug

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Rating

2.9 / 5 Overall
Champion	QC12YC
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
19mm (3/4")	16mm (5/8")
Reach	Hex size
Gasket	Solid
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

XS3924

Iridium-Platinum

4.2/ 5

.045"19mm, ⌀14x1.25HR 3

XST3924

Iridium-Platinum

4.2/ 5

.045"19mm, ⌀14x1.25HR 3

BKR6E

Copper

3.1/ 5

.031"19mm, ⌀14x1.25HR 6

BKR5E

Copper

3.1/ 5

.035"19mm, ⌀14x1.25HR 5

Deep reference (44)

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

IQ16

Copper-Iridium

4.3/ 5

.043"19mm, ⌀14x1.25HR 16

IQ16

Copper-Iridium

4.3/ 5

.043"19mm, ⌀14x1.25HR 16

VK20

Iridium-Platinum

4.2/ 5

.043"19mm, ⌀14x1.25HR 20

VK16

Iridium-Platinum

4.2/ 5

.043"19mm, ⌀14x1.25HR 16

BKR6EIX

Copper-Iridium

3.8/ 5

.031"19mm, ⌀14x1.25HR 6

71EZ

Copper-Iridium

3.8/ 5

.030"19mm, ⌀14x1.25HR 12

Q16PR-U11

Copper

3.3/ 5

.043"19mm, ⌀14x1.25HR 16

Q16PR-U11

Copper

3.3/ 5

.043"19mm, ⌀14x1.25HR 16

K20PR-U

Copper

3.3/ 5

.031"19mm, ⌀14x1.25HR 20

AR3923

Copper

3.3/ 5

.045"19mm, ⌀14x1.25HR 2

AR3924

Copper

3.3/ 5

.045"19mm, ⌀14x1.25HR 3

RC89TMC

Copper

3.3/ 5

.020"19mm, ⌀14x1.25HR 89

K16PR-U

Copper

3.3/ 5

.031"19mm, ⌀14x1.25HR 16

5071

Copper

3.2/ 5

.030"19mm, ⌀14x1.25HR 12

5071

Copper

3.2/ 5

.030"19mm, ⌀14x1.25HR 12

5071

Copper

3.2/ 5

.030"19mm, ⌀14x1.25HR 12

BKR5EY

Copper

3.1/ 5

.035"19mm, ⌀14x1.25HR 5

BKR5EY

Copper

3.1/ 5

.035"19mm, ⌀14x1.25HR 5

BKR6EY

Copper

3.1/ 5

.035"19mm, ⌀14x1.25HR 6

2095

Copper-Gold-Palladium

3.1/ 5

.035"19mm, ⌀14x1.25HR 9

7816

Copper

-

2.9/ 5

.031"19mm, ⌀14x1.25HR 9

FR8DC+

Copper

-

2.9/ 5

.031"19mm, ⌀14x1.25HR 8

7816

Copper

-

2.9/ 5

.031"19mm, ⌀14x1.25HR 9

FR7DC+

Copper

-

2.9/ 5

.035"19mm, ⌀14x1.25HR 7

RC9YC

Copper

-

2.9/ 5

.035"19mm, ⌀14x1.25HR 9

F7DC

Copper

-

2.9/ 5

.028"19mm, ⌀14x1.25HR 7

FR7DC+ NS

Copper

-

2.9/ 5

.035"19mm, ⌀14x1.25HR 7

XC10YC

Copper

-

2.9/ 5

.030"19mm, ⌀14x1.25HR 10

3926

Copper

-

2.9/ 5

.035"19mm, ⌀14x1.25HR 5

5224

Copper

-

2.9/ 5

.045"19mm, ⌀14x1.25HR 3

FR8DC+

Copper

-

2.9/ 5

.031"19mm, ⌀14x1.25HR 8

71-1

Copper

-

2.9/ 5

.035"19mm, ⌀14x1.25HR 12

71C2

Copper

-

2.9/ 5

.035"19mm, ⌀14x1.25HR 12

431-1

Copper

-

2.9/ 5

.039"19mm, ⌀14x1.25HR 14

431C2

Copper

-

2.9/ 5

.039"19mm, ⌀14x1.25HR 14

431S

Copper

-

2.9/ 5

.039"19mm, ⌀14x1.25HR 14

RC10YC

Copper

-

2.9/ 5

.030"19mm, ⌀14x1.25HR 10

RC14YC

Copper

-

2.9/ 5

.039"19mm, ⌀14x1.25HR 14

RC8YC

Copper

-

2.9/ 5

.030"19mm, ⌀14x1.25HR 8

XC92YC

Copper

-

2.9/ 5

.030"19mm, ⌀14x1.25HR 92

5184

Copper

-

2.9/ 5

.059"19mm, ⌀14x1.25HR 3

5184BP

Copper

-

2.9/ 5

.059"19mm, ⌀14x1.25HR 3

7816

Copper

-

2.9/ 5

.031"19mm, ⌀14x1.25HR 9

XC12YC

Copper

-

2.9/ 5

.030"19mm, ⌀14x1.25HR 12

Same specs (6)

Products that have identical characteristics that impact interchangability

71EZ

Copper-Iridium

3.8/ 5

.030"19mm, ⌀14x1.25HR 12

RC12PYP3

Platinum

3.6/ 5

.030"19mm, ⌀14x1.25HR 12

5071

Copper

3.2/ 5

.030"19mm, ⌀14x1.25HR 12

946-1

Copper

-

2.9/ 5

.030"19mm, ⌀14x1.25HR 12

XC12YC SE

Copper

-

2.9/ 5

.030"19mm, ⌀14x1.25HR 12

XC12YC

Copper

-

2.9/ 5

.030"19mm, ⌀14x1.25HR 12

Bigger gap (10)

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

RC11WYPB4

Iridium-Platinum

4.2/ 5

.041"19mm, ⌀14x1.25HR 11

9003S

Iridium-Platinum

4.2/ 5

.041"19mm, ⌀14x1.25HR 11

FR8DPP33+

Platinum

3.8/ 5

.039"19mm, ⌀14x1.25HR 8

RC11PYPB4

Platinum

3.8/ 5

.039"19mm, ⌀14x1.25HR 11

ZFR5BGP

Copper-Platinum

3.5/ 5

.039"19mm, ⌀14x1.25HR 5

RC11ZYC4

Copper

-

2.9/ 5

.039"19mm, ⌀14x1.25HR 11

71-1

Copper

-

2.9/ 5

.035"19mm, ⌀14x1.25HR 12

71C2

Copper

-

2.9/ 5

.035"19mm, ⌀14x1.25HR 12

71CC

Copper

-

2.9/ 5

.035"19mm, ⌀14x1.25HR 12

RC12YC G

Copper

-

2.9/ 5

.035"19mm, ⌀14x1.25HR 12

One step colder (3)

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

RC10YC

Copper

-

2.9/ 5

.030"19mm, ⌀14x1.25HR 10

XC10YC

Copper

-

2.9/ 5

.030"19mm, ⌀14x1.25HR 10

RC10YC OBS

Copper

-

2.9/ 5

.030"19mm, ⌀14x1.25HR 10

Two steps colder (8)

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

9801S

Iridium-Platinum

4.2/ 5

.030"19mm, ⌀14x1.25HR 8

RC8WYPB3

Iridium-Platinum

4.2/ 5

.030"19mm, ⌀14x1.25HR 8

RC8PYPB

Platinum

3.8/ 5

.030"19mm, ⌀14x1.25HR 8

RC7PYCBX

Copper-Platinum

3.5/ 5

.030"19mm, ⌀14x1.25HR 7

RC7PYCB

Copper-Platinum

3.5/ 5

.030"19mm, ⌀14x1.25HR 7

RC8PYCBX

Copper-Platinum

3.5/ 5

.030"19mm, ⌀14x1.25HR 8

RC8YC

Copper

-

2.9/ 5

.030"19mm, ⌀14x1.25HR 8

RC7YC3

Copper

-

2.9/ 5

.030"19mm, ⌀14x1.25HR 7