Denso W9PR-U Spark Plug

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Rating

3.3 / 5 Overall
Denso	W9PR-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

0.7mm (.028")	9
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 (5)

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

847

Copper

2.9/ 5

.071"9.5mm, ⌀14x1.25HR 8

RJ18YC

Copper

2.9/ 5

.035"9.5mm, ⌀14x1.25HR 18

RJ18YC6

Copper

2.9/ 5

.059"9.5mm, ⌀14x1.25HR 18

86

Copper

2.9/ 5

.035"9.5mm, ⌀14x1.25HR 6

BPMR4A

Copper

2.9/ 5

.028"9.5mm, ⌀14x1.25HR 4

Deep reference (17)

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

XST2976

Iridium-Platinum

4.2/ 5

.024"9.5mm, ⌀14x1.25HR 4

W14PR-U15

Copper

-

3.3/ 5

.059"9.5mm, ⌀14x1.25HR 14

W9PR-U15

Copper

-

3.3/ 5

.059"9.5mm, ⌀14x1.25HR 9

W9PR-U20

Copper

-

3.3/ 5

.079"9.5mm, ⌀14x1.25HR 9

W14PR-U

Copper

-

3.3/ 5

.028"9.5mm, ⌀14x1.25HR 14

XR45

Copper

3.1/ 5

.059"9.5mm, ⌀14x1.25HR 4

XR4

Copper

3.1/ 5

.039"9.5mm, ⌀14x1.25HR 4

XR45

Copper

3.1/ 5

.059"9.5mm, ⌀14x1.25HR 4

XR4

Copper

3.1/ 5

.039"9.5mm, ⌀14x1.25HR 4

RJ18YC6

Copper

2.9/ 5

.059"9.5mm, ⌀14x1.25HR 18

86

Copper

2.9/ 5

.035"9.5mm, ⌀14x1.25HR 6

847

Copper

2.9/ 5

.071"9.5mm, ⌀14x1.25HR 8

RJ14YC

Copper

2.9/ 5

.035"9.5mm, ⌀14x1.25HR 14

RJ18YC

Copper

2.9/ 5

.035"9.5mm, ⌀14x1.25HR 18

2976

Copper

2.9/ 5

.024"9.5mm, ⌀14x1.25HR 4

WR10FCY

Copper

2.7/ 5

.059"9.5mm, ⌀14x1.25HR 10

WR10FCZ

Copper

2.7/ 5

.079"9.5mm, ⌀14x1.25HR 10

Two steps colder (1)

Two steps colder spark plugs with same characteristics for heavily modified engines (150-200 hp increase)

W14PR-U

Copper

-

3.3/ 5

.028"9.5mm, ⌀14x1.25HR 14