NGK PTR5D-10 3784 Spark Plug

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Rating

3.8 / 5 Overall
NGK	PTR5D-10
Brand	Code
4.0 / 5 Materials
Platinum	Platinum
Ground electrode	Center electrode
3.5 / 5 Design
Standard	Fine Wire
Ground type	Center type

Specifications

1mm (.039")	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

HR8LPP33U

Platinum

-

3.8/ 5

.039"17.5mm, ⌀14x1.25HR 8

HR8DPP33X

Platinum

-

3.8/ 5

.043"17.5mm, ⌀14x1.25HR 8

APP104

Platinum

3.5/ 5

.050"17.5mm, ⌀14x1.25HR 2

APP104DP2

Platinum

3.5/ 5

.050"17.5mm, ⌀14x1.25HR 2

APP105

Platinum

3.5/ 5

.050"17.5mm, ⌀14x1.25HR 3

APP106

Platinum

3.5/ 5

.050"17.5mm, ⌀14x1.25HR 4

Deep reference (5)

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

PTR5C-13

Platinum

-

3.8/ 5

.050"18mm, ⌀14x1.25HR 5

RS12PYP

Platinum

3.7/ 5

.049"17.5mm, ⌀14x1.25HR 12

Same specs (4)

Products that have identical characteristics that impact interchangability

ZTJ16R10

Iridium-Platinum

4.2/ 5

.039"18mm, ⌀14x1.25HR 16

TR5-1IX

Copper-Iridium

-

3.8/ 5

.039"18mm, ⌀14x1.25HR 5

TR5-1GP

Copper-Platinum

3.5/ 5

.039"18mm, ⌀14x1.25HR 5

TR5-1

Copper

3.1/ 5

.039"18mm, ⌀14x1.25HR 5

Bigger gap (7)

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

TR5AI-13

Iridium-Platinum

4.2/ 5

.050"18mm, ⌀14x1.25HR 5

TR5BP12

Platinum

-

3.8/ 5

.047"18mm, ⌀14x1.25HR 5

PTR5C-13

Platinum

-

3.8/ 5

.050"18mm, ⌀14x1.25HR 5

PTR5D-13

Platinum

-

3.8/ 5

.050"18mm, ⌀14x1.25HR 5

PTR5F-11

Platinum

-

3.8/ 5

.043"18mm, ⌀14x1.25HR 5

BPR5EFS-13

Copper

2.9/ 5

.050"18mm, ⌀14x1.25HR 5

TR5C-12

Copper

2.9/ 5

.047"18mm, ⌀14x1.25HR 5

One step colder (3)

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

TR6IX

Copper-Iridium

-

3.8/ 5

.039"18mm, ⌀14x1.25HR 6

TR6GP

Copper-Platinum

3.5/ 5

.039"18mm, ⌀14x1.25HR 6

TR6

Copper

3.1/ 5

.039"18mm, ⌀14x1.25HR 6

Two steps colder (1)

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

TR7IX

Copper-Iridium

-

3.8/ 5

.039"18mm, ⌀14x1.25HR 7