Champion 58S Spark Plug

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Rating
Brand	Code
2.9 / 5 Overall
Champion	58S
3.0 / 5 Materials
Copper	Copper
Ground electrode	Center electrode
2.8 / 5 Design
Standard	Standard
Ground type	Center type

Specifications
Gap	Heat range
0.9mm (.035")	18
⌀14mm	1.25mm
Thread diameter	Thread pitch
9.5mm (3/8")	21mm (13/16")
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

XR4

Copper

3.1/ 5

.039"9.5mm, ⌀14x1.25HR 4

Deep reference (7)

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

W14PR-U

Copper

3.3/ 5

.028"9.5mm, ⌀14x1.25HR 14

W16PR-U

Copper

3.3/ 5

.028"9.5mm, ⌀14x1.25HR 16

86

Copper

2.9/ 5

.035"9.5mm, ⌀14x1.25HR 6

86BP

Copper

2.9/ 5

.035"9.5mm, ⌀14x1.25HR 6

RJ14YC

Copper

2.9/ 5

.035"9.5mm, ⌀14x1.25HR 14

RJ18YC

Copper

2.9/ 5

.035"9.5mm, ⌀14x1.25HR 18

WR10FCY

Copper

2.7/ 5

.059"9.5mm, ⌀14x1.25HR 10

Same specs (2)

Products that have identical characteristics that impact interchangability

58CC

Copper

2.9/ 5

.035"9.5mm, ⌀14x1.25HR 18

RJ18YC

Copper

2.9/ 5

.035"9.5mm, ⌀14x1.25HR 18

Two steps colder (2)

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

63CC

Copper

2.9/ 5

.035"9.5mm, ⌀14x1.25HR 14

RJ14YC

Copper

2.9/ 5

.035"9.5mm, ⌀14x1.25HR 14