NGK B7S Spark Plug

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Rating
Brand	Code
2.9 / 5 Overall
NGK	B7S
3.0 / 5 Materials
Copper	Copper
Ground electrode	Center electrode
2.8 / 5 Design
Standard	Standard
Ground type	Center type

Specifications
Gap	Heat range
0.7mm (.028")	7
⌀14mm	1.25mm
Thread diameter	Thread pitch
9.5mm (3/8")	21mm (13/16")
Reach	Hex size
Gasket	Removable Nut
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 (4)

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

W22S-U

Copper

3.3/ 5

.028"9.5mm, ⌀14x1.25HR 22

825C

Copper

2.9/ 5

.030"9.5mm, ⌀14x1.25HR 4

J4C

Copper

2.9/ 5

.030"9.5mm, ⌀14x1.25HR 4

303

Copper

2.9/ 5

.035"9.5mm, ⌀14x1.25HR 4

Deep reference (9)

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

W24S-U

Copper

3.3/ 5

.028"9.5mm, ⌀14x1.25HR 24

W16S-U

Copper

3.3/ 5

.028"9.5mm, ⌀14x1.25HR 16

W20S-U

Copper

3.3/ 5

.028"9.5mm, ⌀14x1.25HR 20

R5670-7

Copper

3.1/ 5

.031"9.5mm, ⌀14x1.25HR 7

353

Copper

2.9/ 5

.031"9.5mm, ⌀14x1.25HR 2

353

Copper

2.9/ 5

.031"9.5mm, ⌀14x1.25HR 2

J6C

Copper

2.9/ 5

.030"9.5mm, ⌀14x1.25HR 6

RJ6C

Copper

2.9/ 5

.030"9.5mm, ⌀14x1.25HR 6

BR6S

Copper

2.9/ 5

.028"9.5mm, ⌀14x1.25HR 6

One step colder (1)

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

B8S

Copper

2.9/ 5

.028"9.5mm, ⌀14x1.25HR 8