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Denso W20FS-U Spark Plug

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Rating
3.3 / 5
Overall
DensoW20FS-U
BrandCode
3.0 / 5
Materials
CopperCopper
Ground electrodeCenter electrode
4.0 / 5
Design
U-GrooveStandard
Ground typeCenter type
Specifications
0.7mm (.028")20
GapHeat range
⌀14mm1.25mm
Thread diameterThread pitch
12.7mm (1/2")21mm (13/16")
ReachHex size
GasketRemovable Nut
SeatTerminal
1Non-Projected
Ground countProjection

Cross-reference and alternatives

How we find alternative spark plugs How we rate spark plugs

Cross-reference (3)

Alternative spark plugs found in cross-reference docs provided by manufacturers
Copper
2.9/ 5
.024"12.7mm, ⌀14x1.25HR 7
Copper
2.9/ 5
.028"12.7mm, ⌀14x1.25HR 6
Copper
2.9/ 5
.024"12.7mm, ⌀14x1.25HR 5

Deep reference (17)

A second level of cross-reference: if A=B and B=C, then A=C
Copper-Iridium
4.3/ 5
.031"12.7mm, ⌀14x1.25HR 22
Copper-Iridium
4.3/ 5
.031"12.7mm, ⌀14x1.25HR 22
Iridium-Platinum
4.2/ 5
.031"12.7mm, ⌀14x1.25HR 4
Copper
-
3.3/ 5
.016"12.7mm, ⌀14x1.25HR 85
Copper
2.9/ 5
.024"12.7mm, ⌀14x1.25HR 5
Copper
2.9/ 5
.028"12.7mm, ⌀14x1.25HR 6
Copper
2.9/ 5
.024"12.7mm, ⌀14x1.25HR 5
Copper
2.9/ 5
.024"12.7mm, ⌀14x1.25HR 7
Copper
2.9/ 5
.020"12.7mm, ⌀14x1.25HR 86
Copper
2.9/ 5
.031"12.7mm, ⌀14x1.25HR 82
Copper
2.9/ 5
.020"12.7mm, ⌀14x1.25HR 86
Copper
2.9/ 5
.024"12.7mm, ⌀14x1.25HR 7
Copper
2.9/ 5
.031"12.7mm, ⌀14x1.25HR 4
Copper
2.9/ 5
.024"12.7mm, ⌀14x1.25HR 7
Copper
2.9/ 5
.024"12.7mm, ⌀14x1.25HR 86
Copper
2.9/ 5
.028"12.7mm, ⌀14x1.25HR 6
Copper
2.9/ 5
.028"12.7mm, ⌀14x1.25HR 6

One step colder (1)

Colder spark plugs with same characteristics for moderately tuned engines (75–100 hp increase)
Copper
-
3.3/ 5
.028"12.7mm, ⌀14x1.25HR 22

Two steps colder (1)

Two steps colder spark plugs with same characteristics for heavily modified engines (150-200 hp increase)
Copper
-
3.3/ 5
.028"12.7mm, ⌀14x1.25HR 24