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Denso IWM27 Spark Plug

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Rating
4.3 / 5
Overall
DensoIWM27
BrandCode
4.0 / 5
Materials
CopperIridium
Ground electrodeCenter electrode
4.8 / 5
Design
U-GrooveFine Wire
Ground typeCenter type
Specifications
0.8mm (.031")27
GapHeat range
⌀14mm1.25mm
Thread diameterThread pitch
19mm (3/4")21mm (13/16")
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
4.0/ 5
.031"19mm, ⌀14x1.25HR 9
Copper
3.1/ 5
.031"19mm, ⌀14x1.25HR 9

Deep reference (1)

A second level of cross-reference: if A=B and B=C, then A=C
Copper
3.3/ 5
.031"19mm, ⌀14x1.25HR 27

Same specs (1)

Products that have identical characteristics that impact interchangability
Copper
3.3/ 5
.031"19mm, ⌀14x1.25HR 27

One step colder (2)

Colder spark plugs with same characteristics for moderately tuned engines (75–100 hp increase)
Copper-Iridium
-
4.3/ 5
.031"19mm, ⌀14x1.25HR 31
Copper
3.3/ 5
.031"19mm, ⌀14x1.25HR 31