NGK TR45-1GP 5684 Spark Plug

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Rating

3.5 / 5 Overall
NGK	TR45-1GP
Brand	Code
3.5 / 5 Materials
Copper	Platinum
Ground electrode	Center electrode
3.5 / 5 Design
Standard	Fine Wire
Ground type	Center type

Specifications

1.5mm (.059")	4
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

Same specs (1)

Products that have identical characteristics that impact interchangability

PTR4G-15

Platinum

3.8/ 5

.059"18mm, ⌀14x1.25HR 4

One step colder (4)

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

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

TR55-1

Copper

3.1/ 5

.059"18mm, ⌀14x1.25HR 5

Two steps colder (1)

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

TR65IX

Copper-Iridium

3.8/ 5

.059"18mm, ⌀14x1.25HR 6