Denso T20M-U Spark Plug

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Rating

3.3 / 5 Overall
Denso	T20M-U
Brand	Code
3.0 / 5 Materials
Copper	Copper
Ground electrode	Center electrode
4.0 / 5 Design
U-Groove	Standard
Ground type	Center type

Specifications

0.6mm (.024")	20
Gap	Heat range
⌀14mm	1.25mm
Thread diameter	Thread pitch
7.8mm (.307")	16mm (5/8")
Reach	Hex size
Tapered	Removable Nut
Seat	Terminal
1	Non-Projected
Ground count	Projection

Cross-reference and alternatives

Cross-reference (7)

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

XST2956

Iridium-Platinum

4.2/ 5

.024"8.5mm, ⌀14x1.25HR 2

DJ7J

Copper

-

3.3/ 5

.024"7.8mm, ⌀14x1.25HR 7

DJ8J

Copper

-

3.3/ 5

.024"7.8mm, ⌀14x1.25HR 8

RDJ8J

Copper

-

3.3/ 5

.024"7.8mm, ⌀14x1.25HR 8

BM6F

Copper

2.9/ 5

.028"9.5mm, ⌀14x1.25HR 6

2956

Copper

2.9/ 5

.024"8.5mm, ⌀14x1.25HR 2

RDJ7J

Copper

2.9/ 5

.024"7.8mm, ⌀14x1.25HR 7

Deep reference (37)

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

XST2956

Iridium-Platinum

4.2/ 5

.024"8.5mm, ⌀14x1.25HR 2

XST2956

Iridium-Platinum

4.2/ 5

.024"8.5mm, ⌀14x1.25HR 2

XST2956

Iridium-Platinum

4.2/ 5

.024"8.5mm, ⌀14x1.25HR 2

XST2956

Iridium-Platinum

4.2/ 5

.024"8.5mm, ⌀14x1.25HR 2

XST2956

Iridium-Platinum

4.2/ 5

.024"8.5mm, ⌀14x1.25HR 2

847EZ

Copper-Iridium

3.8/ 5

.024"7.8mm, ⌀14x1.25HR 8

DJ7J

Copper

-

3.3/ 5

.024"7.8mm, ⌀14x1.25HR 7

DJ8J

Copper

-

3.3/ 5

.024"7.8mm, ⌀14x1.25HR 8

RDJ8J

Copper

-

3.3/ 5

.024"7.8mm, ⌀14x1.25HR 8

847-1

Copper

-

3.3/ 5

.024"7.8mm, ⌀14x1.25HR 8

850C

Copper

-

3.3/ 5

.024"7.8mm, ⌀14x1.25HR 7

DJ7J

Copper

-

3.3/ 5

.024"7.8mm, ⌀14x1.25HR 7

DJ8J

Copper

-

3.3/ 5

.024"7.8mm, ⌀14x1.25HR 8

847S

Copper

-

3.3/ 5

.024"7.8mm, ⌀14x1.25HR 8

RDJ8J

Copper

-

3.3/ 5

.024"7.8mm, ⌀14x1.25HR 8

DJ7J

Copper

-

3.3/ 5

.024"7.8mm, ⌀14x1.25HR 7

DJ8J

Copper

-

3.3/ 5

.024"7.8mm, ⌀14x1.25HR 8

RDJ8J

Copper

-

3.3/ 5

.024"7.8mm, ⌀14x1.25HR 8

5847

Copper

3.2/ 5

.024"7.8mm, ⌀14x1.25HR 8

5847

Copper

3.2/ 5

.024"7.8mm, ⌀14x1.25HR 8

5847

Copper

3.2/ 5

.024"7.8mm, ⌀14x1.25HR 8

RDJ7J

Copper

2.9/ 5

.024"7.8mm, ⌀14x1.25HR 7

BM6F

Copper

2.9/ 5

.028"9.5mm, ⌀14x1.25HR 6

2956

Copper

2.9/ 5

.024"8.5mm, ⌀14x1.25HR 2

BM6F

Copper

2.9/ 5

.028"9.5mm, ⌀14x1.25HR 6

2956

Copper

2.9/ 5

.024"8.5mm, ⌀14x1.25HR 2

BM6F

Copper

2.9/ 5

.028"9.5mm, ⌀14x1.25HR 6

2956

Copper

2.9/ 5

.024"8.5mm, ⌀14x1.25HR 2

BM6F

Copper

2.9/ 5

.028"9.5mm, ⌀14x1.25HR 6

BPMR6F

Copper

2.9/ 5

.028"9.5mm, ⌀14x1.25HR 6

2956

Copper

2.9/ 5

.024"8.5mm, ⌀14x1.25HR 2

2956DP

Copper

2.9/ 5

.024"8.5mm, ⌀14x1.25HR 2

RDJ7J

Copper

2.9/ 5

.024"7.8mm, ⌀14x1.25HR 7

RDJ7J

Copper

2.9/ 5

.024"7.8mm, ⌀14x1.25HR 7

BM6F

Copper

2.9/ 5

.028"9.5mm, ⌀14x1.25HR 6

2956

Copper

2.9/ 5

.024"8.5mm, ⌀14x1.25HR 2

BM6F

Copper

2.9/ 5

.028"9.5mm, ⌀14x1.25HR 6

One step colder (1)

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

T22M-U

Copper

-

3.3/ 5

.024"7.8mm, ⌀14x1.25HR 22