NGK R0373A-10 Spark Plug

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Rating

4.5 / 5 Overall
NGK	R0373A-10
Brand	Code
4.5 / 5 Materials
Platinum	Iridium
Ground electrode	Center electrode
4.5 / 5 Design
Slant	Fine Wire
Ground type	Center type

Specifications

0.6mm (.024")	10
Gap	Heat range
⌀10mm	1mm
Thread diameter	Thread pitch
19mm (3/4")	16mm (5/8")
Reach	Hex size
Gasket	Threaded Stud
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

IU01-31

Iridium-Platinum

-

4.5/ 5

.024"19mm, ⌀10x1HR 31

G55R

Copper

3.2/ 5

.020"19mm, ⌀10x1HR 55

G57C

Copper

2.9/ 5

.030"19mm, ⌀10x1HR 57

Deep reference (5)

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

IU01-31

Iridium-Platinum

-

4.5/ 5

.024"19mm, ⌀10x1HR 31

IU31

Copper-Iridium

4.3/ 5

.035"19mm, ⌀10x1HR 31

XS4302

Iridium-Platinum

4.2/ 5

.031"19mm, ⌀10x1HR 1

G55R

Copper

3.2/ 5

.020"19mm, ⌀10x1HR 55

4302

Copper

2.9/ 5

.031"19mm, ⌀10x1HR 1

One step colder (2)

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

IU01-34

Iridium-Platinum

-

4.5/ 5

.024"19mm, ⌀10x1HR 34

R0373A-11

Iridium-Platinum

-

4.5/ 5

.024"19mm, ⌀10x1HR 11