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NGK CMR4H Spark Plug

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Rating
2.9 / 5
Overall
NGKCMR4H
BrandCode
3.0 / 5
Materials
CopperCopper
Ground electrodeCenter electrode
2.8 / 5
Design
StandardStandard
Ground typeCenter type
Specifications
0.7mm (.028")4
GapHeat range
⌀10mm1mm
Thread diameterThread pitch
12.7mm (1/2")16mm (5/8")
ReachHex size
GasketSolid
SeatTerminal
1Non-Projected
Ground countProjection

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Same specs (1)

Products that have identical characteristics that impact interchangability
Copper
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2.9/ 5
.028"12.7mm, ⌀10x1HR 4

One step colder (2)

Colder spark plugs with same characteristics for moderately tuned engines (75–100 hp increase)
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2.9/ 5
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2.9/ 5
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Two steps colder (2)

Two steps colder spark plugs with same characteristics for heavily modified engines (150-200 hp increase)
Copper
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2.9/ 5
.028"12.7mm, ⌀10x1HR 6
Copper
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2.9/ 5
.028"12.7mm, ⌀10x1HR 6