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NGK KR8BI 4347 Spark Plug

HomeSpark PlugsNGK → KR8BI
NGK KR8BI 4347 image
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Rating
4.2 / 5
Overall
NGKKR8BI
BrandCode
4.5 / 5
Materials
PlatinumIridium
Ground electrodeCenter electrode
3.5 / 5
Design
StandardFine Wire
Ground typeCenter type
Specifications
0.75mm (.030")8
GapHeat range
⌀12mm1.25mm
Thread diameterThread pitch
19mm (3/4")16mm (5/8")
ReachHex size
GasketSolid
SeatTerminal
1Non-Projected
Ground countProjection

Cross-reference and alternatives

How we find alternative spark plugs How we rate spark plugs

Cross-reference (2)

Alternative spark plugs found in cross-reference docs provided by manufacturers
Copper-Iridium
4.3/ 5
.035"19mm, ⌀12x1.25HR 24
Iridium-Platinum
-
4.2/ 5
.035"19mm, ⌀12x1.25HR 24

Deep reference (12)

A second level of cross-reference: if A=B and B=C, then A=C
Iridium-Platinum
-
4.2/ 5
.031"19mm, ⌀12x1.25HR 8
Iridium-Platinum
-
4.2/ 5
.031"19mm, ⌀12x1.25HR 8
Copper-Iridium
3.8/ 5
.031"19mm, ⌀12x1.25HR 8
Copper-Iridium
3.8/ 5
.031"19mm, ⌀12x1.25HR 8
Copper-Platinum
3.6/ 5
.035"19mm, ⌀12x1.25HR 8
Copper-Platinum
3.6/ 5
.035"19mm, ⌀12x1.25HR 8
Copper
3.3/ 5
.035"19mm, ⌀12x1.25HR 8
Copper
3.3/ 5
.035"19mm, ⌀12x1.25HR 8
Copper
2.9/ 5
.028"19mm, ⌀12x1.25HR 8
Copper
2.9/ 5
.024"19mm, ⌀12x1.25HR 4
Copper
2.9/ 5
.028"19mm, ⌀12x1.25HR 8
Copper
2.9/ 5
.024"19mm, ⌀12x1.25HR 4

Bigger gap (1)

0.1..0.3 mm gap increase for better performance given your ignition system can handle it
Iridium-Platinum
-
4.2/ 5
.035"19mm, ⌀12x1.25HR 24