NGK PTR5C-13 7740 Spark Plug

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Rating

3.8 / 5 Overall
NGK	PTR5C-13
Brand	Code
4.0 / 5 Materials
Platinum	Platinum
Ground electrode	Center electrode
3.5 / 5 Design
Standard	Fine Wire
Ground type	Center type

Specifications

1.3mm (.050")	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 (6)

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

HR7DPP33Y

Platinum

-

3.8/ 5

.059"17.5mm, ⌀14x1.25HR 7

HR6DPP33X

Platinum

-

3.8/ 5

.043"17.5mm, ⌀14x1.25HR 6

HR7DPP33V

Platinum

-

3.8/ 5

.050"17.5mm, ⌀14x1.25HR 7

RS12PYPB5

Platinum

-

3.8/ 5

.049"17.5mm, ⌀14x1.25HR 12

APP104

Platinum

3.5/ 5

.050"17.5mm, ⌀14x1.25HR 2

APP5364

Platinum

3.5/ 5

.055"25mm, ⌀14x1.25HR 2

Deep reference (12)

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

RS14PYP

Platinum

-

3.8/ 5

.043"17.5mm, ⌀14x1.25HR 14

RS12PYPB5

Platinum

-

3.8/ 5

.049"17.5mm, ⌀14x1.25HR 12

PTR5D-13

Platinum

-

3.8/ 5

.050"18mm, ⌀14x1.25HR 5

PTR5D-10

Platinum

-

3.8/ 5

.039"18mm, ⌀14x1.25HR 5

RE7PYP6

Platinum

-

3.8/ 5

.059"25mm, ⌀14x1.25HR 10

PTR5F-11

Platinum

-

3.8/ 5

.043"18mm, ⌀14x1.25HR 5

PLTR6A-10G

Platinum

-

3.8/ 5

.039"25mm, ⌀14x1.25HR 6

PTR5A-13

Platinum

-

3.8/ 5

.050"25mm, ⌀14x1.25HR 5

RS12PYP

Platinum

3.7/ 5

.049"17.5mm, ⌀14x1.25HR 12

APP104

Platinum

3.5/ 5

.050"17.5mm, ⌀14x1.25HR 2

HGR8MQP

Copper-Platinum

3.5/ 5

.063"25mm, ⌀14x1.25HR 8

LTR5GP

Copper-Platinum

3.5/ 5

.039"25mm, ⌀14x1.25HR 5

Same specs (3)

Products that have identical characteristics that impact interchangability

TR5AI-13

Iridium-Platinum

4.2/ 5

.050"18mm, ⌀14x1.25HR 5

PTR5D-13

Platinum

-

3.8/ 5

.050"18mm, ⌀14x1.25HR 5

BPR5EFS-13

Copper

2.9/ 5

.050"18mm, ⌀14x1.25HR 5

Bigger gap (4)

0.1..0.3 mm gap increase for better performance given your ignition system can handle it

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

One step colder (2)

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

PTR6D-13

Platinum

-

3.8/ 5

.050"18mm, ⌀14x1.25HR 6

TR6AP-13

Platinum

-

3.8/ 5

.050"18mm, ⌀14x1.25HR 6