Champion C61C Spark Plug

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Rating
Brand	Code
2.9 / 5 Overall
Champion	C61C
3.0 / 5 Materials
Copper	Copper
Ground electrode	Center electrode
2.8 / 5 Design
Standard	Standard
Ground type	Center type

Specifications
Gap	Heat range
0.65mm (.026")	61
⌀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 (3)

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

IK27

Copper-Iridium

4.3/ 5

.031"19mm, ⌀14x1.25HR 27

AR3934

Copper

3.3/ 5

.024"19mm, ⌀14x1.25HR 4

R5671A-8

Copper

3.1/ 5

.031"19mm, ⌀14x1.25HR 8

Deep reference (14)

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

IK24

Copper-Iridium

4.3/ 5

.031"19mm, ⌀14x1.25HR 24

BKR9EIX

Copper-Iridium

3.8/ 5

.031"19mm, ⌀14x1.25HR 9

C61

Copper

3.5/ 5

.026"19mm, ⌀14x1.25HR 61

QC59C

Copper

3.3/ 5

.026"19mm, ⌀14x1.25HR 59

QC59YC

Copper

3.3/ 5

.030"19mm, ⌀14x1.25HR 59

C61CX

Copper

3.3/ 5

.035"19mm, ⌀14x1.25HR 61

C61CX

Copper

3.3/ 5

.035"19mm, ⌀14x1.25HR 61

AR3934

Copper

3.3/ 5

.024"19mm, ⌀14x1.25HR 4

W24ES-U

Copper

3.3/ 5

.031"19mm, ⌀14x1.25HR 24

R5671A-9

Copper

3.1/ 5

.031"19mm, ⌀14x1.25HR 9

R5672A-9

Copper

3.1/ 5

.031"19mm, ⌀14x1.25HR 9

R5671A-8

Copper

3.1/ 5

.031"19mm, ⌀14x1.25HR 8

C59YC

Copper

2.9/ 5

.026"19mm, ⌀14x1.25HR 59

C61YC

Copper

2.9/ 5

.026"19mm, ⌀14x1.25HR 61

One step colder (1)

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

QC59

Copper

3.2/ 5

.026"19mm, ⌀14x1.25HR 59

Two steps colder (1)

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

C55

Copper

3.2/ 5

.026"19mm, ⌀14x1.25HR 55