Bosch USR4AC Spark Plug

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Rating

2.9 / 5 Overall
Bosch	USR4AC
Brand	Code
3.0 / 5 Materials
Copper	Copper
Ground electrode	Center electrode
2.8 / 5 Design
Standard	Standard
Ground type	Center type

Specifications

0.5mm (.020")	4
Gap	Heat range
⌀10mm	1mm
Thread diameter	Thread pitch
12.7mm (1/2")	16mm (5/8")
Reach	Hex size
Gasket	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

CMR6H

Copper

-

2.9/ 5

.028"12.7mm, ⌀10x1HR 6

Deep reference (2)

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

RZ7C

Copper

3.3/ 5

.026"12.7mm, ⌀10x1HR 7

4194

Copper

-

2.9/ 5

.024"12.7mm, ⌀10x1HR 1