NGK B8EFS Spark Plug

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Rating

2.9 / 5 Overall
NGK	B8EFS
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")	8
Gap	Heat range
⌀14mm	1.25mm
Thread diameter	Thread pitch
18mm (.709")	16mm (5/8")
Reach	Hex size
Tapered	Removable Nut
Seat	Terminal
1	Non-Projected
Ground count	Projection

Cross-reference and alternatives

Cross-reference (2)

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

IT24

Copper-Iridium

4.3/ 5

.031"17.5mm, ⌀14x1.25HR 24

AR474

Copper

3.3/ 5

.024"17.5mm, ⌀14x1.25HR 3

Deep reference (4)

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

TR8IX

Copper-Iridium

3.8/ 5

.039"18mm, ⌀14x1.25HR 8

S61C

Copper

3.3/ 5

.024"17.5mm, ⌀14x1.25HR 61

R5724-8

Copper

3.1/ 5

.020"18mm, ⌀14x1.25HR 8

R5724-8

Copper

3.1/ 5

.020"18mm, ⌀14x1.25HR 8

One step colder (1)

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

B9EFS

Copper

-

2.9/ 5

.028"18mm, ⌀14x1.25HR 9