Bosch WR8CC+ 7904 Spark Plug

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Rating

2.9 / 5 Overall
Bosch	WR8CC+
Brand	Code
3.0 / 5 Materials
Copper	Copper
Ground electrode	Center electrode
2.8 / 5 Design
Standard	Standard
Ground type	Center type

Specifications

0.7mm (.028")	8
Gap	Heat range
⌀14mm	1.25mm
Thread diameter	Thread pitch
19mm (3/4")	21mm (13/16")
Reach	Hex size
Gasket	Removable Nut
Seat	Terminal
1	Non-Projected
Ground count	Projection

Cross-reference and alternatives

Cross-reference (2)

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

405

Copper

-

2.9/ 5

.035"19mm, ⌀14x1.25HR 10

BR5ES

Copper

-

2.9/ 5

.035"19mm, ⌀14x1.25HR 5

Deep reference (14)

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

W16ESR-U

Copper

3.3/ 5

.031"19mm, ⌀14x1.25HR 16

W16ESR-U

Copper

3.3/ 5

.031"19mm, ⌀14x1.25HR 16

WR8CC

Copper

-

2.9/ 5

.031"19mm, ⌀14x1.25HR 8

N21

Copper

-

2.9/ 5

.024"19mm, ⌀14x1.25HR 21

W14E

Copper

-

2.9/ 5

.031"19mm, ⌀14x1.25HR 14

W14EKR-S11

Copper

-

2.9/ 5

.043"19mm, ⌀14x1.25HR 14

B4ES

Copper

-

2.9/ 5

.031"19mm, ⌀14x1.25HR 4

B5ES

Copper

-

2.9/ 5

.035"19mm, ⌀14x1.25HR 5

BR4ES

Copper

-

2.9/ 5

.031"19mm, ⌀14x1.25HR 4

BR5ES

Copper

-

2.9/ 5

.035"19mm, ⌀14x1.25HR 5

BR5ES-11

Copper

-

2.9/ 5

.043"19mm, ⌀14x1.25HR 5

405

Copper

-

2.9/ 5

.035"19mm, ⌀14x1.25HR 10

WR8CC

Copper

-

2.9/ 5

.031"19mm, ⌀14x1.25HR 8

W16ESL-11

Copper

-

2.9/ 5

.043"19mm, ⌀14x1.25HR 16

Bigger gap (2)

0.1..0.3 mm gap increase for better performance given your ignition system can handle it

WR8DPP30W

Copper-Platinum

3.5/ 5

.035"19mm, ⌀14x1.25HR 8

WR8CC

Copper

-

2.9/ 5

.031"19mm, ⌀14x1.25HR 8

One step colder (1)

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

WR7CC+

Copper

-

2.9/ 5

.028"19mm, ⌀14x1.25HR 7