NGK B6S Spark Plug

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Rating

2.9 / 5 Overall
NGK	B6S
Brand	Code
3.0 / 5 Materials
Copper	Copper
Ground electrode	Center electrode
2.8 / 5 Design
Standard	Standard
Ground type	Center type

Specifications

0.7mm (.028")	6
Gap	Heat range
⌀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

Cross-reference (6)

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

W20S-U

Copper

3.3/ 5

.028"9.5mm, ⌀14x1.25HR 20

823-1

Copper

-

2.9/ 5

.030"9.5mm, ⌀14x1.25HR 6

841-1

Copper

-

2.9/ 5

.030"9.5mm, ⌀14x1.25HR 8

J11C

Copper

-

2.9/ 5

.030"9.5mm, ⌀14x1.25HR 11

J6C

Copper

-

2.9/ 5

.030"9.5mm, ⌀14x1.25HR 6

295

Copper

-

2.9/ 5

.030"9.5mm, ⌀14x1.25HR 7

Deep reference (9)

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

W9-U

Copper

3.3/ 5

.028"9.5mm, ⌀14x1.25HR 9

W20S-U

Copper

3.3/ 5

.028"9.5mm, ⌀14x1.25HR 20

W14-U

Copper

3.3/ 5

.028"9.5mm, ⌀14x1.25HR 14

303

Copper

-

2.9/ 5

.035"9.5mm, ⌀14x1.25HR 4

J6C

Copper

-

2.9/ 5

.030"9.5mm, ⌀14x1.25HR 6

306

Copper

-

2.9/ 5

.035"9.5mm, ⌀14x1.25HR 8

B-4

Copper

-

2.9/ 5

.028"9.5mm, ⌀14x1.25HR 4

303

Copper

-

2.9/ 5

.035"9.5mm, ⌀14x1.25HR 4

B-4

Copper

-

2.9/ 5

.028"9.5mm, ⌀14x1.25HR 4

One step colder (1)

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

B7S

Copper

-

2.9/ 5

.028"9.5mm, ⌀14x1.25HR 7

Two steps colder (1)

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

B8S

Copper

-

2.9/ 5

.028"9.5mm, ⌀14x1.25HR 8