NGK TR4IX 7300 Spark Plug

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Rating

3.8 / 5 Overall
NGK	TR4IX
Brand	Code
4.0 / 5 Materials
Copper	Iridium
Ground electrode	Center electrode
3.5 / 5 Design
Standard	Fine Wire
Ground type	Center type

Specifications

1mm (.039")	4
Gap	Heat range
⌀14mm	1.25mm
Thread diameter	Thread pitch
18mm (.709")	16mm (5/8")
Reach	Hex size
Tapered	Removable Nut
Seat	Terminal
1	Non-Projected
Ground count	Projection

Cross-reference and alternatives

Cross-reference (8)

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

HR9LII33X

Iridium

4.5/ 5

.043"17.5mm, ⌀14x1.25HR 9

VT16

Iridium-Platinum

4.2/ 5

.043"17.5mm, ⌀14x1.25HR 16

XP5245

Iridium-Platinum

4.2/ 5

.045"18mm, ⌀14x1.25HR 3

RS14PYP

Platinum

-

3.8/ 5

.043"17.5mm, ⌀14x1.25HR 14

HR9DPX

Copper-Platinum

3.3/ 5

.043"17.5mm, ⌀14x1.25HR 9

T16EPR-U

Copper

3.3/ 5

.031"18mm, ⌀14x1.25HR 16

T20EPR-U

Copper

3.3/ 5

.031"18mm, ⌀14x1.25HR 20

T20EP-U

Copper

3.3/ 5

.031"18mm, ⌀14x1.25HR 20

Deep reference (57)

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

TR5AI-13

Iridium-Platinum

4.2/ 5

.050"18mm, ⌀14x1.25HR 5

VT16

Iridium-Platinum

4.2/ 5

.043"17.5mm, ⌀14x1.25HR 16

XS985

Iridium-Platinum

4.2/ 5

.035"19mm, ⌀14x1.25HR 4

HR9LI33U

Copper-Iridium

-

3.8/ 5

.039"17.5mm, ⌀14x1.25HR 9

RS12PYP

Platinum

3.7/ 5

.049"17.5mm, ⌀14x1.25HR 12

HGR9DQP

Copper-Platinum

3.5/ 5

.063"17.5mm, ⌀14x1.25HR 9

RS17YX

Copper

3.5/ 5

.024"17.5mm, ⌀14x1.25HR 17

APP104

Platinum

3.5/ 5

.050"17.5mm, ⌀14x1.25HR 2

RS17YX

Copper

3.5/ 5

.024"17.5mm, ⌀14x1.25HR 17

HR8DPX

Copper-Platinum

3.3/ 5

.043"17.5mm, ⌀14x1.25HR 8

HR9DPX

Copper-Platinum

3.3/ 5

.043"17.5mm, ⌀14x1.25HR 9

RS14PMC4

Copper-Platinum

3.3/ 5

.039"17.5mm, ⌀14x1.25HR 14

AR33

Copper

3.3/ 5

.035"11.6mm, ⌀18x1.5HR 2

RS14PMC4

Copper-Platinum

3.3/ 5

.039"17.5mm, ⌀14x1.25HR 14

242240519

Copper-Silver

3.3/ 5

.024"17.5mm, ⌀14x1.25HR 6

S9YC

Copper

3.3/ 5

.026"17.5mm, ⌀14x1.25HR 9

AP605

Copper-Platinum

3.2/ 5

.059"17.5mm, ⌀14x1.25HR 3

HGR7KQC

Copper

3.2/ 5

.063"17.5mm, ⌀14x1.25HR 7

TR4

Copper

3.1/ 5

.039"18mm, ⌀14x1.25HR 4

TR4

Copper

3.1/ 5

.039"18mm, ⌀14x1.25HR 4

TR5-1

Copper

3.1/ 5

.039"18mm, ⌀14x1.25HR 5

TR6

Copper

3.1/ 5

.039"18mm, ⌀14x1.25HR 6

HR8LPX

Copper-Platinum

3.0/ 5

.043"17.5mm, ⌀14x1.25HR 8

HR9DPY

Copper-Platinum

3.0/ 5

.059"17.5mm, ⌀14x1.25HR 9

HR9LPX

Copper-Platinum

3.0/ 5

.043"17.5mm, ⌀14x1.25HR 9

H9DC

Copper

2.9/ 5

.031"17.5mm, ⌀14x1.5HR 9

HR10DCX

Copper

2.9/ 5

.043"17.5mm, ⌀14x1.25HR 10

HR8DCX

Copper

2.9/ 5

.043"17.5mm, ⌀14x1.25HR 8

106

Copper

2.9/ 5

.050"17.5mm, ⌀14x1.25HR 4

2545

Copper

2.9/ 5

.045"18mm, ⌀14x1.25HR 3

2546

Copper

2.9/ 5

.055"18mm, ⌀14x1.25HR 4

605

Copper

2.9/ 5

.059"17.5mm, ⌀14x1.25HR 3

765

Copper

2.9/ 5

.045"17.5mm, ⌀14x1.25HR 3

766

Copper

2.9/ 5

.045"17.5mm, ⌀14x1.25HR 4

RS14LC

Copper

2.9/ 5

.043"18mm, ⌀14x1.25HR 14

RS14YC

Copper

2.9/ 5

.045"17.5mm, ⌀14x1.25HR 14

RS15LYC

Copper

2.9/ 5

.039"17.5mm, ⌀14x1.25HR 15

H9DC

Copper

2.9/ 5

.031"17.5mm, ⌀14x1.5HR 9

HR10DCX

Copper

2.9/ 5

.043"17.5mm, ⌀14x1.25HR 10

HR8DCX

Copper

2.9/ 5

.043"17.5mm, ⌀14x1.25HR 8

106

Copper

2.9/ 5

.050"17.5mm, ⌀14x1.25HR 4

765

Copper

2.9/ 5

.045"17.5mm, ⌀14x1.25HR 3

766

Copper

2.9/ 5

.045"17.5mm, ⌀14x1.25HR 4

RS14YC

Copper

2.9/ 5

.045"17.5mm, ⌀14x1.25HR 14

104

Copper

2.9/ 5

.050"17.5mm, ⌀14x1.25HR 2

BPR6EFS

Copper

2.9/ 5

.031"18mm, ⌀14x1.25HR 6

BUR6EFSZ

Copper

2.9/ 5

.031"18mm, ⌀14x1.25HR 6

103

Copper

2.9/ 5

.050"17.5mm, ⌀14x1.25HR 1

104

Copper

2.9/ 5

.050"17.5mm, ⌀14x1.25HR 2

5143

Copper

2.9/ 5

.055"18mm, ⌀14x1.25HR 1

5144

Copper

2.9/ 5

.055"18mm, ⌀14x1.25HR 2

764

Copper

2.9/ 5

.045"17.5mm, ⌀14x1.25HR 2

985

Copper

2.9/ 5

.035"19mm, ⌀14x1.25HR 4

RS10LC

Copper

2.9/ 5

.043"21mm, ⌀14x1.25HR 10

RS9YC

Copper

2.9/ 5

.035"17.5mm, ⌀14x1.25HR 9

BU6EFSZ

Copper

2.9/ 5

.026"18mm, ⌀14x1.25HR 6

104

Copper

2.9/ 5

.050"17.5mm, ⌀14x1.25HR 2

Same specs (2)

Products that have identical characteristics that impact interchangability

TR4GP

Copper-Platinum

3.5/ 5

.039"18mm, ⌀14x1.25HR 4

TR4

Copper

3.1/ 5

.039"18mm, ⌀14x1.25HR 4

One step colder (5)

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

ZTJ16R10

Iridium-Platinum

4.2/ 5

.039"18mm, ⌀14x1.25HR 16

PTR5D-10

Platinum

-

3.8/ 5

.039"18mm, ⌀14x1.25HR 5

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

Two steps colder (3)

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