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Denso U31FER-ZU9 4163 Spark Plug

HomeSpark PlugsDenso → U31FER-ZU9
Denso U31FER-ZU9 4163 image
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Rating
3.9 / 5
Overall
DensoU31FER-ZU9
BrandCode
3.5 / 5
Materials
CopperPlatinum
Ground electrodeCenter electrode
4.8 / 5
Design
U-GrooveFine Wire
Ground typeCenter type
Specifications
0.9mm (.035")31
GapHeat range
⌀10mm1mm
Thread diameterThread pitch
19mm (3/4")16mm (5/8")
ReachHex size
GasketSolid
SeatTerminal
1Non-Projected
Ground countProjection

Cross-reference and alternatives

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Same specs (1)

Products that have identical characteristics that impact interchangability
Copper-Platinum
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3.9/ 5
.035"19mm, ⌀10x1HR 31

One step colder (1)

Colder spark plugs with same characteristics for moderately tuned engines (75–100 hp increase)
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3.9/ 5
.035"19mm, ⌀10x1HR 34