Denso W16P-U Spark Plug

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Rating

3.3 / 5 Overall
Denso	W16P-U
Brand	Code
3.0 / 5 Materials
Copper	Copper
Ground electrode	Center electrode
4.0 / 5 Design
U-Groove	Standard
Ground type	Center type

Specifications

0.8mm (.031")	16
Gap	Heat range
⌀14mm	1.25mm
Thread diameter	Thread pitch
9.5mm (3/8")	21mm (13/16")
Reach	Hex size
Gasket	Removable Nut
Seat	Terminal
1	Non-Projected
Ground count	Projection

Cross-reference and alternatives

Cross-reference (3)

Alternative spark plugs found in cross-reference docs provided by manufacturers

XS85

Iridium-Platinum

4.2/ 5

.035"9.5mm, ⌀14x1.25HR 5

4275

Copper

2.9/ 5

.035"9.5mm, ⌀14x1.25HR 5

B5HS

Copper

2.9/ 5

.035"12.7mm, ⌀14x1.25HR 5

Deep reference (11)

A second level of cross-reference: if A=B and B=C, then A=C

XR5IX

Copper-Iridium

3.8/ 5

.039"9.5mm, ⌀14x1.25HR 5

W16PR-U

Copper

-

3.3/ 5

.028"9.5mm, ⌀14x1.25HR 16

W16PR-U

Copper

-

3.3/ 5

.028"9.5mm, ⌀14x1.25HR 16

W16FS-U

Copper

-

3.3/ 5

.028"12.7mm, ⌀14x1.25HR 16

R5670-5

Copper

3.1/ 5

.031"9.5mm, ⌀14x1.25HR 5

R5670-5

Copper

3.1/ 5

.031"9.5mm, ⌀14x1.25HR 5

J12YC

Copper

2.9/ 5

.035"9.5mm, ⌀14x1.25HR 12

RJ12YC

Copper

2.9/ 5

.035"9.5mm, ⌀14x1.25HR 12

J12YC

Copper

2.9/ 5

.035"9.5mm, ⌀14x1.25HR 12

RJ12YC

Copper

2.9/ 5

.035"9.5mm, ⌀14x1.25HR 12

L90C

Copper

2.9/ 5

.020"12.7mm, ⌀14x1.25HR 90

One step colder (1)

Colder spark plugs with same characteristics for moderately tuned engines (75–100 hp increase)

W20P-U

Copper

-

3.3/ 5

.031"9.5mm, ⌀14x1.25HR 20