NGK TR55-1 Spark Plug

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Rating

3.1 / 5 Overall
NGK	TR55-1
Brand	Code
3.0 / 5 Materials
Copper	Copper
Ground electrode	Center electrode
3.3 / 5 Design
Standard	V-Cut
Ground type	Center type

Specifications

1.5mm (.059")	5
Gap	Heat range
⌀14mm	1.25mm
Thread diameter	Thread pitch
18mm (.709")	16mm (5/8")
Reach	Hex size
Tapered	Solid
Seat	Terminal
1	Non-Projected
Ground count	Projection

Cross-reference and alternatives

Cross-reference (2)

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

HR9LCY

Copper

2.9/ 5

.059"17.5mm, ⌀14x1.25HR 9

605

Copper

2.9/ 5

.059"17.5mm, ⌀14x1.25HR 3

Deep reference (7)

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

VT16

Iridium-Platinum

4.2/ 5

.043"17.5mm, ⌀14x1.25HR 16

T20EPR-U15

Copper

3.3/ 5

.059"18mm, ⌀14x1.25HR 20

5245

Copper

2.9/ 5

.045"18mm, ⌀14x1.25HR 3

HR9DCY+ NS

Copper

2.9/ 5

.059"17.5mm, ⌀14x1.25HR 9

HR9DCX+

Copper

2.9/ 5

.043"17.5mm, ⌀14x1.25HR 9

HR9DCY+

Copper

2.9/ 5

.059"17.5mm, ⌀14x1.25HR 9

BPR5EFS-13

Copper

2.9/ 5

.050"18mm, ⌀14x1.25HR 5

Same specs (3)

Products that have identical characteristics that impact interchangability

PTJ16R15

Platinum

3.8/ 5

.059"18mm, ⌀14x1.25HR 16

TR55-1IX

Copper-Iridium

3.8/ 5

.059"18mm, ⌀14x1.25HR 5

TR55-1GP

Copper-Platinum

3.5/ 5

.059"18mm, ⌀14x1.25HR 5

One step colder (1)

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

TR65IX

Copper-Iridium

3.8/ 5

.059"18mm, ⌀14x1.25HR 6