NGK FR4 Spark Plug

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Rating

3.1 / 5 Overall
NGK	FR4
Brand	Code
3.0 / 5 Materials
Copper	Copper
Ground electrode	Center electrode
3.3 / 5 Design
Standard	V-Cut
Ground type	Center type

Specifications

1mm (.039")	4
Gap	Heat range
⌀14mm	1.25mm
Thread diameter	Thread pitch
19mm (3/4")	16mm (5/8")
Reach	Hex size
Gasket	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

VK16

Iridium-Platinum

4.2/ 5

.043"19mm, ⌀14x1.25HR 16

Q16PR-U

Copper

3.3/ 5

.031"19mm, ⌀14x1.25HR 16

K16PR-U

Copper

3.3/ 5

.031"19mm, ⌀14x1.25HR 16

FR8DCX+ NS

Copper

2.9/ 5

.043"19mm, ⌀14x1.25HR 8

431S

Copper

2.9/ 5

.039"19mm, ⌀14x1.25HR 14

3926

Copper

2.9/ 5

.035"19mm, ⌀14x1.25HR 5

Deep reference (65)

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

IFR5D10

Iridium-Platinum

4.2/ 5

.039"19mm, ⌀14x1.25HR 5

IFR5J11

Iridium-Platinum

4.2/ 5

.043"19mm, ⌀14x1.25HR 5

FR5EI

Iridium-Platinum

4.2/ 5

.031"19mm, ⌀14x1.25HR 5

IFR5G11

Iridium-Platinum

4.2/ 5

.043"19mm, ⌀14x1.25HR 5

IZFR5K11

Iridium-Platinum

4.2/ 5

.043"19mm, ⌀14x1.25HR 5

IZFR5L11

Iridium-Platinum

4.2/ 5

.043"19mm, ⌀14x1.25HR 5

VK16

Iridium-Platinum

4.2/ 5

.043"19mm, ⌀14x1.25HR 16

BKR4EIX

Copper-Iridium

3.8/ 5

.031"19mm, ⌀14x1.25HR 4

PFR5J11

Platinum

3.8/ 5

.043"19mm, ⌀14x1.25HR 5

PZFR5F

Platinum

3.8/ 5

.031"19mm, ⌀14x1.25HR 5

ZFR5AP

Platinum

3.8/ 5

.031"19mm, ⌀14x1.25HR 5

KC10PYPB4

Platinum

3.8/ 5

.039"19mm, ⌀14x1.25HR 10

RC10PYPB4

Platinum

3.8/ 5

.039"19mm, ⌀14x1.25HR 10

RC11PYPB4

Platinum

3.8/ 5

.039"19mm, ⌀14x1.25HR 11

RC10PYP4

Platinum

3.7/ 5

.039"19mm, ⌀14x1.25HR 10

FGR8DQP

Copper-Platinum

3.5/ 5

.063"19mm, ⌀14x1.25HR 8

FGR8LQP0

Copper-Platinum

3.5/ 5

.063"19mm, ⌀14x1.25HR 8

ZFR5FGP

Copper-Platinum

3.5/ 5

.039"19mm, ⌀14x1.25HR 5

RC10PYC

Copper-Platinum

3.5/ 5

.045"19mm, ⌀14x1.25HR 10

FR8DPX

Copper-Platinum

3.3/ 5

.043"19mm, ⌀14x1.25HR 8

242229598

Copper-Silver

3.3/ 5

.028"19mm, ⌀14x1.25HR 8

FR8LPX

Copper-Platinum

3.3/ 5

.043"19mm, ⌀14x1.25HR 8

RC12PEC5

Copper-Platinum

3.3/ 5

.049"19mm, ⌀14x1.25HR 12

FR5DTC

Copper

3.3/ 5

.031"19mm, ⌀14x1.25HR 5

K16PR-U11

Copper

3.3/ 5

.043"19mm, ⌀14x1.25HR 16

K16R-U11

Copper

3.3/ 5

.043"19mm, ⌀14x1.25HR 16

242225596

Copper

3.2/ 5

.039"19mm, ⌀14x1.25HR 9

BKR5E

Copper

-

3.1/ 5

.035"19mm, ⌀14x1.25HR 5

BKR5EY

Copper

-

3.1/ 5

.035"19mm, ⌀14x1.25HR 5

BKR5EYA

Copper

-

3.1/ 5

.031"19mm, ⌀14x1.25HR 5

FR45

Copper

-

3.1/ 5

.059"19mm, ⌀14x1.25HR 4

ZFR5F

Copper

-

3.1/ 5

.031"19mm, ⌀14x1.25HR 5

BKR5E

Copper

-

3.1/ 5

.035"19mm, ⌀14x1.25HR 5

BKR5E

Copper

-

3.1/ 5

.035"19mm, ⌀14x1.25HR 5

BKR4E

Copper

-

3.1/ 5

.035"19mm, ⌀14x1.25HR 4

BKR4E-11

Copper

-

3.1/ 5

.043"19mm, ⌀14x1.25HR 4

BKR4E

Copper

-

3.1/ 5

.035"19mm, ⌀14x1.25HR 4

BKR5E

Copper

-

3.1/ 5

.035"19mm, ⌀14x1.25HR 5

241229713

Copper

2.9/ 5

.031"19mm, ⌀14x1.25HR 8

FR10DCX

Copper

2.9/ 5

.043"19mm, ⌀14x1.25HR 10

FR8DCY

Copper

2.9/ 5

.059"19mm, ⌀14x1.25HR 8

FR8LCX

Copper

2.9/ 5

.043"19mm, ⌀14x1.25HR 8

BKR5ES-11

Copper

2.9/ 5

.043"19mm, ⌀14x1.25HR 5

BKR5ESA-11

Copper

2.9/ 5

.043"19mm, ⌀14x1.25HR 5

3926

Copper

2.9/ 5

.035"19mm, ⌀14x1.25HR 5

5184

Copper

2.9/ 5

.059"19mm, ⌀14x1.25HR 3

RC10MCC

Copper

2.9/ 5

.033"19mm, ⌀14x1.25HR 10

RC10YC

Copper

2.9/ 5

.030"19mm, ⌀14x1.25HR 10

RC10YC4

Copper

2.9/ 5

.039"19mm, ⌀14x1.25HR 10

RC10YCC4

Copper

2.9/ 5

.039"19mm, ⌀14x1.25HR 10

RC12ECC

Copper

2.9/ 5

.035"19mm, ⌀14x1.25HR 12

RC12MCC4

Copper

2.9/ 5

.039"19mm, ⌀14x1.25HR 12

RC12YC5

Copper

2.9/ 5

.049"19mm, ⌀14x1.25HR 12

XC92YC

Copper

2.9/ 5

.030"19mm, ⌀14x1.25HR 92

BCPR5ES

Copper

2.9/ 5

.035"19mm, ⌀14x1.25HR 5

5224

Copper

2.9/ 5

.045"19mm, ⌀14x1.25HR 3

RC10YC

Copper

2.9/ 5

.030"19mm, ⌀14x1.25HR 10

XC92YC

Copper

2.9/ 5

.030"19mm, ⌀14x1.25HR 92

FR10DCX

Copper

2.9/ 5

.043"19mm, ⌀14x1.25HR 10

RC14YC

Copper

2.9/ 5

.039"19mm, ⌀14x1.25HR 14

RC14YC4

Copper

2.9/ 5

.039"19mm, ⌀14x1.25HR 14

XC92YC

Copper

2.9/ 5

.030"19mm, ⌀14x1.25HR 92

BCP4ES-11

Copper

2.9/ 5

.043"19mm, ⌀14x1.25HR 4

BKR4ESA-11

Copper

2.9/ 5

.043"19mm, ⌀14x1.25HR 4

BKR5ES-11

Copper

2.9/ 5

.043"19mm, ⌀14x1.25HR 5

Same specs (1)

Products that have identical characteristics that impact interchangability

FR4GP

Copper-Platinum

3.5/ 5

.039"19mm, ⌀14x1.25HR 4

Bigger gap (2)

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

BKR4E-11

Copper

-

3.1/ 5

.043"19mm, ⌀14x1.25HR 4

BKR4ESA-11

Copper

2.9/ 5

.043"19mm, ⌀14x1.25HR 4

One step colder (5)

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

IFR5N-10

Iridium-Platinum

4.2/ 5

.039"19mm, ⌀14x1.25HR 5

FR5AP-10

Platinum

3.8/ 5

.039"19mm, ⌀14x1.25HR 5

FR5GP

Copper-Platinum

3.5/ 5

.039"19mm, ⌀14x1.25HR 5

BCPR5EGP

Copper-Platinum

3.5/ 5

.039"19mm, ⌀14x1.25HR 5

FR5

Copper

-

3.1/ 5

.039"19mm, ⌀14x1.25HR 5

Two steps colder (5)

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

IFR6V-10G

Iridium-Platinum

4.2/ 5

.039"19mm, ⌀14x1.25HR 6

PFR6T-10G

Platinum

3.8/ 5

.039"19mm, ⌀14x1.25HR 6

PFR6H-10

Platinum

3.8/ 5

.039"19mm, ⌀14x1.25HR 6

ZFR6BGP-S

Copper-Platinum

3.5/ 5

.039"19mm, ⌀14x1.25HR 6

BCPR6EGP

Copper-Platinum

3.5/ 5

.039"19mm, ⌀14x1.25HR 6