Denso M22 Spark Plug

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Rating
Brand	Code
2.9 / 5 Overall
Denso	M22
3.0 / 5 Materials
Copper	Copper
Ground electrode	Center electrode
2.8 / 5 Design
Standard	Standard
Ground type	Center type

Specifications
Gap	Heat range
0.7mm (.028")	22
⌀18mm	1.5mm
Thread diameter	Thread pitch
12mm (.472")	25mm (1")
Reach	Hex size
Gasket	Removable Nut
Seat	Terminal
1	Non-Projected
Ground count	Projection

Cross-reference and alternatives

How we find alternative spark plugs How we rate spark plugs

Cross-reference (3)

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

373

Copper

2.9/ 5

.024"12.7mm, ⌀18x1.5HR 1

AB-7

Copper

2.9/ 5

.028"11mm, ⌀18x1.5HR 7

D9

Copper

2.8/ 5

.026"12.7mm, ⌀18x1.5HR 9

Deep reference (8)

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

D14N .025

Copper

3.1/ 5

.024"12.7mm, ⌀18x1.5HR 14

AB-7

Copper

2.9/ 5

.028"11mm, ⌀18x1.5HR 7

373

Copper

2.9/ 5

.024"12.7mm, ⌀18x1.5HR 1

373

Copper

2.9/ 5

.024"12.7mm, ⌀18x1.5HR 1

AB-6

Copper

2.9/ 5

.028"11mm, ⌀18x1.5HR 6

D6

Copper

2.8/ 5

.026"12.7mm, ⌀18x1.5HR 6

D9

Copper

2.8/ 5

.026"12.7mm, ⌀18x1.5HR 9

RD16

Copper

2.8/ 5

.026"12.7mm, ⌀18x1.5HR 16

One step colder (1)

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

M24S

Copper

2.9/ 5

.028"12mm, ⌀18x1.5HR 24