Bosch FR8SI332 9746 Spark Plug

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Rating

4.5 / 5 Overall
Bosch	FR8SI332
Brand	Code
5.0 / 5 Materials
Iridium	Iridium
Ground electrode	Center electrode
3.5 / 5 Design
Standard	Fine Wire
Ground type	Center type

Specifications

1mm (.039")	8
Gap	Heat range
⌀14mm	1.25mm
Thread diameter	Thread pitch
26.5mm (1.04")	16mm (5/8")
Reach	Hex size
Gasket	Solid
Seat	Terminal
1	Non-Projected
Ground count	Projection

Cross-reference and alternatives

Same specs (2)

Products that have identical characteristics that impact interchangability

FR8SII332X

Iridium

-

4.5/ 5

.039"26.5mm, ⌀14x1.25HR 8

FR8SPP33X

Platinum

3.8/ 5

.039"26.5mm, ⌀14x1.25HR 8

Bigger gap (5)

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

FR8MII33X

Iridium

-

4.5/ 5

.043"26.5mm, ⌀14x1.25HR 8

FR8SII33X

Iridium

-

4.5/ 5

.043"26.5mm, ⌀14x1.25HR 8

FR8MPP33X

Platinum

3.8/ 5

.043"26.5mm, ⌀14x1.25HR 8

FR8MPP30X

Copper-Platinum

3.5/ 5

.043"26.5mm, ⌀14x1.25HR 8

FR8SPP30X

Copper-Platinum

3.5/ 5

.043"26.5mm, ⌀14x1.25HR 8

One step colder (4)

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

242235769

Copper-Iridium

3.8/ 5

.039"26.5mm, ⌀14x1.25HR 7

242236510

Platinum

3.8/ 5

.039"26.5mm, ⌀14x1.25HR 7

FR7SPP302U

Copper-Platinum

3.5/ 5

.039"26.5mm, ⌀14x1.25HR 7

FR7NEU

Copper

2.9/ 5

.039"26.5mm, ⌀14x1.25HR 7