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NGK ER9EH Spark Plug

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Rating
2.9 / 5
Overall
NGKER9EH
BrandCode
3.0 / 5
Materials
CopperCopper
Ground electrodeCenter electrode
2.8 / 5
Design
StandardStandard
Ground typeCenter type
Specifications
0.7mm (.028")9
GapHeat range
⌀8mm1mm
Thread diameterThread pitch
19mm (3/4")13mm (1/2")
ReachHex size
GasketThreaded Stud
SeatTerminal
1Non-Projected
Ground countProjection

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
Copper-Iridium
3.8/ 5
.028"19mm, ⌀8x1HR 27

Deep reference (1)

A second level of cross-reference: if A=B and B=C, then A=C
Copper-Iridium
3.8/ 5
.028"19mm, ⌀8x1HR 9

Same specs (1)

Products that have identical characteristics that impact interchangability
Copper-Iridium
3.8/ 5
.028"19mm, ⌀8x1HR 9

One step colder (1)

Colder spark plugs with same characteristics for moderately tuned engines (75–100 hp increase)
Copper
-
2.9/ 5
.028"19mm, ⌀8x1HR 10