Champion 439C2 Spark Plug

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Rating

2.9 / 5 Overall
Champion	439C2
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")	16mm (5/8")
Reach	Hex size
Gasket	Solid
Seat	Terminal
1	Non-Projected
Ground count	Projection

Cross-reference and alternatives

Same specs (11)

Products that have identical characteristics that impact interchangability

RC12WLPB4

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4.2/ 5

.039"19mm, ⌀14x1.25HR 12

RC12WMPB4

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7318-2

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RC12PLC4

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318CC

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318C2

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RC12MCC4

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QC12GMC MARINE

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Bigger gap (4)

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

RC12WEPB

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One step colder (9)

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

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.039"19mm, ⌀14x1.25HR 10

RC10PLPB4

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.039"19mm, ⌀14x1.25HR 10

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2.9/ 5

.039"19mm, ⌀14x1.25HR 9

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2.9/ 5

.039"19mm, ⌀14x1.25HR 9

436CC

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.039"19mm, ⌀14x1.25HR 9

436S

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2.9/ 5

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QC9MC4

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2.9/ 5

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RC9MC4

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Two steps colder (3)

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

RC8WMPB4 PS

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.039"19mm, ⌀14x1.25HR 8

9803S

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.039"19mm, ⌀14x1.25HR 8

RC8WMPB4

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.039"19mm, ⌀14x1.25HR 8