Champion S61C Spark Plug

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Rating

3.3 / 5 Overall
Champion	S61C
Brand	Code
3.0 / 5 Materials
Copper	Copper
Ground electrode	Center electrode
3.8 / 5 Design
Cut Back	Standard
Ground type	Center type

Specifications

0.6mm (.024")	61
Gap	Heat range
⌀14mm	1.25mm
Thread diameter	Thread pitch
17.5mm (.689")	16mm (5/8")
Reach	Hex size
Tapered	Solid
Seat	Terminal
1	Non-Projected
Ground count	Projection

Cross-reference and alternatives

Cross-reference (1)

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

AR474

Copper

-

3.3/ 5

.024"17.5mm, ⌀14x1.25HR 3

Deep reference (2)

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

R5724-8

Copper

3.1/ 5

.020"18mm, ⌀14x1.25HR 8

B8EFS

Copper

2.9/ 5

.028"18mm, ⌀14x1.25HR 8

Bigger gap (2)

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

S61HX

Copper

-

3.3/ 5

.030"17.5mm, ⌀14x1.25HR 61

S63HX

Copper

-

3.3/ 5

.030"17.5mm, ⌀14x1.25HR 63

One step colder (1)

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

S59C

Copper

-

3.3/ 5

.024"17.5mm, ⌀14x1.25HR 59

Two steps colder (1)

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

S55C

Copper

-

3.3/ 5

.024"17.5mm, ⌀14x1.25HR 55