Champion C63CX Spark Plug

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Rating
Brand	Code
3.3 / 5 Overall
Champion	C63CX
3.0 / 5 Materials
Copper	Copper
Ground electrode	Center electrode
3.8 / 5 Design
Cut Back	Standard
Ground type	Center type

Specifications
Gap	Heat range
0.9mm (.035")	63
⌀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

How we find alternative spark plugs How we rate spark plugs

Cross-reference (1)

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

R5671A-7

Copper

3.1/ 5

.031"19mm, ⌀14x1.25HR 7

Deep reference (5)

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

IK22

Copper-Iridium

4.3/ 5

.031"19mm, ⌀14x1.25HR 22

AR3935

Copper

3.3/ 5

.024"19mm, ⌀14x1.25HR 5

W22ES-U

Copper

3.3/ 5

.031"19mm, ⌀14x1.25HR 22

W5CC

Copper

2.9/ 5

.020"19mm, ⌀14x1.25HR 5

403

Copper

2.9/ 5

.035"19mm, ⌀14x1.25HR 7

Same specs (2)

Products that have identical characteristics that impact interchangability

C61HCX

Copper

3.3/ 5

.035"19mm, ⌀14x1.25HR 61

C61CX

Copper

3.3/ 5

.035"19mm, ⌀14x1.25HR 61

One step colder (2)

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

C59HCX

Copper

3.3/ 5

.035"19mm, ⌀14x1.25HR 59

C59CX

Copper

3.3/ 5

.035"19mm, ⌀14x1.25HR 59

Two steps colder (1)

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

C55CX

Copper

3.3/ 5

.035"19mm, ⌀14x1.25HR 55