Bosch HR9DPX 4211 Spark Plug

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Rating

3.3 / 5 Overall
Bosch	HR9DPX
Brand	Code
3.5 / 5 Materials
Copper	Platinum
Ground electrode	Center electrode
2.8 / 5 Design
Standard	Standard
Ground type	Center type

Specifications

1.1mm (.043")	9
Gap	Heat range
⌀14mm	1.25mm
Thread diameter	Thread pitch
17.5mm (.689")	16mm (5/8")
Reach	Hex size
Tapered	Solid
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

VT16

Iridium-Platinum

4.2/ 5

.043"17.5mm, ⌀14x1.25HR 16

TR4IX

Copper-Iridium

3.8/ 5

.039"18mm, ⌀14x1.25HR 4

AP605

Copper-Platinum

3.2/ 5

.059"17.5mm, ⌀14x1.25HR 3

Deep reference (36)

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

HR9LII33X

Iridium

4.5/ 5

.043"17.5mm, ⌀14x1.25HR 9

TR5AI-13

Iridium-Platinum

4.2/ 5

.050"18mm, ⌀14x1.25HR 5

VT16

Iridium-Platinum

4.2/ 5

.043"17.5mm, ⌀14x1.25HR 16

XP5245

Iridium-Platinum

4.2/ 5

.045"18mm, ⌀14x1.25HR 3

TR4IX

Copper-Iridium

3.8/ 5

.039"18mm, ⌀14x1.25HR 4

RS14PYP

Platinum

3.8/ 5

.043"17.5mm, ⌀14x1.25HR 14

RS12PYP

Platinum

3.7/ 5

.049"17.5mm, ⌀14x1.25HR 12

HGR9DQP

Copper-Platinum

3.5/ 5

.063"17.5mm, ⌀14x1.25HR 9

RS17YX

Copper

3.5/ 5

.024"17.5mm, ⌀14x1.25HR 17

TR55-1VX

Copper-Platinum

3.5/ 5

.059"18mm, ⌀14x1.25HR 5

TR55VX

Copper-Platinum

3.5/ 5

.059"18mm, ⌀14x1.25HR 5

TR55-1GP

Copper-Platinum

3.5/ 5

.059"18mm, ⌀14x1.25HR 5

HR8DPX

Copper-Platinum

-

3.3/ 5

.043"17.5mm, ⌀14x1.25HR 8

RS14PMC4

Copper-Platinum

-

3.3/ 5

.039"17.5mm, ⌀14x1.25HR 14

T16EPR-U

Copper

-

3.3/ 5

.031"18mm, ⌀14x1.25HR 16

T20EPR-U

Copper

-

3.3/ 5

.031"18mm, ⌀14x1.25HR 20

T20EP-U

Copper

-

3.3/ 5

.031"18mm, ⌀14x1.25HR 20

HR9DPX+

Copper-Platinum

-

3.3/ 5

.043"19mm, ⌀14x1.25HR 9

HR9DPY+

Copper-Platinum

-

3.3/ 5

.059"19mm, ⌀14x1.25HR 9

TR4

Copper

3.1/ 5

.039"18mm, ⌀14x1.25HR 4

HR8LPX

Copper-Platinum

3.0/ 5

.043"17.5mm, ⌀14x1.25HR 8

HR9DPY

Copper-Platinum

3.0/ 5

.059"17.5mm, ⌀14x1.25HR 9

HR9LPX

Copper-Platinum

3.0/ 5

.043"17.5mm, ⌀14x1.25HR 9

HR9DPY

Copper-Platinum

3.0/ 5

.059"17.5mm, ⌀14x1.25HR 9

H9DC

Copper

2.9/ 5

.031"17.5mm, ⌀14x1.5HR 9

HR10DCX

Copper

2.9/ 5

.043"17.5mm, ⌀14x1.25HR 10

HR8DCX

Copper

2.9/ 5

.043"17.5mm, ⌀14x1.25HR 8

106

Copper

2.9/ 5

.050"17.5mm, ⌀14x1.25HR 4

2545

Copper

2.9/ 5

.045"18mm, ⌀14x1.25HR 3

2546

Copper

2.9/ 5

.055"18mm, ⌀14x1.25HR 4

605

Copper

2.9/ 5

.059"17.5mm, ⌀14x1.25HR 3

765

Copper

2.9/ 5

.045"17.5mm, ⌀14x1.25HR 3

766

Copper

2.9/ 5

.045"17.5mm, ⌀14x1.25HR 4

RS14LC

Copper

2.9/ 5

.043"18mm, ⌀14x1.25HR 14

RS14YC

Copper

2.9/ 5

.045"17.5mm, ⌀14x1.25HR 14

RS15LYC

Copper

2.9/ 5

.039"17.5mm, ⌀14x1.25HR 15

Same specs (2)

Products that have identical characteristics that impact interchangability

RS14PYP

Platinum

3.8/ 5

.043"17.5mm, ⌀14x1.25HR 14

HR9LCX+

Copper

2.9/ 5

.043"17.5mm, ⌀14x1.25HR 9

Bigger gap (2)

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

7940-2

Platinum

3.8/ 5

.049"17.5mm, ⌀14x1.25HR 14

RS14PYPB5

Platinum

3.8/ 5

.049"17.5mm, ⌀14x1.25HR 14

One step colder (2)

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

HR8DPX

Copper-Platinum

-

3.3/ 5

.043"17.5mm, ⌀14x1.25HR 8

HR8DCX

Copper

2.9/ 5

.043"17.5mm, ⌀14x1.25HR 8

Two steps colder (1)

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

RS10PYC

Copper-Platinum

-

3.3/ 5

.043"17.5mm, ⌀14x1.25HR 10