Bosch HR9LII33X 9612 Spark Plug

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Rating

4.5 / 5 Overall
Bosch	HR9LII33X
Brand	Code
5.0 / 5 Materials
Iridium	Iridium
Ground electrode	Center electrode
3.5 / 5 Design
Standard	Fine Wire
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 (1)

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

TR4IX

Copper-Iridium

3.8/ 5

.039"18mm, ⌀14x1.25HR 4

Deep reference (7)

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

VT16

Iridium-Platinum

4.2/ 5

.043"17.5mm, ⌀14x1.25HR 16

XP5245

Iridium-Platinum

4.2/ 5

.045"18mm, ⌀14x1.25HR 3

RS14PYP

Platinum

3.8/ 5

.043"17.5mm, ⌀14x1.25HR 14

HR9DPX

Copper-Platinum

3.3/ 5

.043"17.5mm, ⌀14x1.25HR 9

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

Same specs (3)

Products that have identical characteristics that impact interchangability

HR9LPP33X

Platinum

3.8/ 5

.043"17.5mm, ⌀14x1.25HR 9

HR9LPP30X

Copper-Platinum

3.5/ 5

.043"17.5mm, ⌀14x1.25HR 9

HR9DCX+

Copper

2.9/ 5

.043"17.5mm, ⌀14x1.25HR 9

One step colder (4)

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

HR8DII33X

Iridium

-

4.5/ 5

.043"17.5mm, ⌀14x1.25HR 8

HR8DPP33X

Platinum

3.8/ 5

.043"17.5mm, ⌀14x1.25HR 8

HR8DPP30X

Copper-Platinum

3.5/ 5

.043"17.5mm, ⌀14x1.25HR 8

HR8DCX+

Copper

2.9/ 5

.043"17.5mm, ⌀14x1.25HR 8

Two steps colder (2)

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

HR6KII33X

Iridium

-

4.5/ 5

.043"17.5mm, ⌀14x1.25HR 6

HR6DPP33X

Platinum

3.8/ 5

.043"17.5mm, ⌀14x1.25HR 6