Bosch WR9DC+ NS Spark Plug

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Rating

2.9 / 5 Overall
Bosch	WR9DC+ NS
Brand	Code
3.0 / 5 Materials
Copper	Copper
Ground electrode	Center electrode
2.8 / 5 Design
Standard	Standard
Ground type	Center type

Specifications

0.8mm (.031")	9
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

Bigger gap (4)

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

DR9DPX+

Copper-Platinum

3.3/ 5

.043"19mm, ⌀14x1.25HR 9

WR9DPX

Copper-Platinum

3.3/ 5

.043"19mm, ⌀14x1.25HR 9

WR9DCX

Copper

-

2.9/ 5

.043"19mm, ⌀14x1.25HR 9

WR9LCX

Copper

-

2.9/ 5

.043"19mm, ⌀14x1.25HR 9

One step colder (4)

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

WR8DC+ NS

Copper

-

2.9/ 5

.031"19mm, ⌀14x1.25HR 8

302S

Copper

-

2.9/ 5

.031"19mm, ⌀14x1.25HR 11

302CC

Copper

-

2.9/ 5

.031"19mm, ⌀14x1.25HR 11

N11YC

Copper

-

2.9/ 5

.031"19mm, ⌀14x1.25HR 11

Two steps colder (8)

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

RN9PYC

Copper-Platinum

3.3/ 5

.031"19mm, ⌀14x1.25HR 9

WR7DC+ NS

Copper

-

2.9/ 5

.031"19mm, ⌀14x1.25HR 7

WR6DC+ NS

Copper

-

2.9/ 5

.031"19mm, ⌀14x1.25HR 6

300-1

Copper

-

2.9/ 5

.031"19mm, ⌀14x1.25HR 9

415C2

Copper

-

2.9/ 5

.031"19mm, ⌀14x1.25HR 9

415ECO

Copper

-

2.9/ 5

.031"19mm, ⌀14x1.25HR 9

415CC

Copper

-

2.9/ 5

.031"19mm, ⌀14x1.25HR 9

415-1

Copper

-

2.9/ 5

.031"19mm, ⌀14x1.25HR 9