Denso U16FSU Spark Plug

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Rating
Brand	Code
3.3 / 5 Overall
Denso	U16FSU
3.0 / 5 Materials
Copper	Copper
Ground electrode	Center electrode
4.0 / 5 Design
U-Groove	Standard
Ground type	Center type

Specifications
Gap	Heat range
0.7mm (.028")	16
⌀10mm	1mm
Thread diameter	Thread pitch
12.7mm (1/2")	16mm (5/8")
Reach	Hex size
Gasket	Threaded Stud
Seat	Terminal
1	Non-Projected
Ground count	Projection

Cross-reference and alternatives

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One step colder (1)

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

U20FS-U

Copper

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3.3/ 5

.028"12.7mm, ⌀10x1HR 20

Two steps colder (1)

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

U22FS-U

Copper

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3.3/ 5

.028"12.7mm, ⌀10x1HR 22