Champion D9 Spark Plug

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Rating
Brand	Code
2.8 / 5 Overall
Champion	D9
3.0 / 5 Materials
Copper	Copper
Ground electrode	Center electrode
2.3 / 5 Design
Standard	Oversized
Ground type	Center type

Specifications
Gap	Heat range
0.65mm (.026")	9
⌀18mm	1.5mm
Thread diameter	Thread pitch
12.7mm (1/2")	22mm (7/8")
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

M22

Copper

2.9/ 5

.028"12mm, ⌀18x1.5HR 22

373

Copper

2.9/ 5

.024"12.7mm, ⌀18x1.5HR 1

AB-6

Copper

2.9/ 5

.028"11mm, ⌀18x1.5HR 6

Deep reference (18)

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

D16J

Copper

3.1/ 5

.030"12.7mm, ⌀18x1.5HR 16

373

Copper

2.9/ 5

.024"12.7mm, ⌀18x1.5HR 1

AB-7

Copper

2.9/ 5

.028"11mm, ⌀18x1.5HR 7

M22

Copper

2.9/ 5

.028"12mm, ⌀18x1.5HR 22

AB-7

Copper

2.9/ 5

.028"11mm, ⌀18x1.5HR 7

386

Copper

2.9/ 5

.024"12.7mm, ⌀18x1.5HR 4

3116

Copper

2.9/ 5

.035"12.7mm, ⌀18x1.5HR 5

D21

Copper

2.9/ 5

.028"12.7mm, ⌀18x1.5HR 21

D23

Copper

2.9/ 5

.030"12.7mm, ⌀18x1.5HR 23

M17

Copper

2.9/ 5

.028"12mm, ⌀18x1.5HR 17

D6

Copper

2.8/ 5

.026"12.7mm, ⌀18x1.5HR 6

UD16

Copper

2.8/ 5

.026"12.7mm, ⌀18x1.5HR 16

D16

Copper

2.8/ 5

.026"12.7mm, ⌀18x1.5HR 16

RD16

Copper

2.8/ 5

.026"12.7mm, ⌀18x1.5HR 16

D-14

Copper

2.8/ 5

.026"12.7mm, ⌀18x1.5HR 14

D18Y

Copper

2.8/ 5

.028"12.7mm, ⌀18x1.5HR 18

D78Y

Copper

2.8/ 5

.016"12.7mm, ⌀18x1.5HR 78

Two steps colder (1)

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

D6

Copper

2.8/ 5

.026"12.7mm, ⌀18x1.5HR 6