NGK ILFR6B 6481 Spark Plug

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Rating

4.2 / 5 Overall
NGK	ILFR6B
Brand	Code
4.5 / 5 Materials
Platinum	Iridium
Ground electrode	Center electrode
3.5 / 5 Design
Standard	Fine Wire
Ground type	Center type

Specifications

0.8mm (.031")	6
Gap	Heat range
⌀14mm	1.25mm
Thread diameter	Thread pitch
26.5mm (1.04")	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

IKH20TT

Iridium-Platinum

4.7/ 5

.039"26.5mm, ⌀14x1.25HR 20

242236528

Iridium

4.5/ 5

.028"26.5mm, ⌀14x1.25HR 7

IKH20

Copper-Iridium

4.3/ 5

.043"26.5mm, ⌀14x1.25HR 20

VKH20

Iridium-Platinum

-

4.2/ 5

.043"26.5mm, ⌀14x1.25HR 20

VKH20Y

Iridium-Platinum

-

4.2/ 5

.031"26.5mm, ⌀14x1.25HR 20

PKH20TT

Platinum-Titanium

3.7/ 5

.039"26.5mm, ⌀14x1.25HR 20

Deep reference (55)

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

DILFR6D11

Iridium-Platinum

4.7/ 5

.043"26.5mm, ⌀14x1.25HR 6

DILFR6J11

Iridium-Platinum

4.7/ 5

.043"26.5mm, ⌀14x1.25HR 6

DILFR6D11

Iridium-Platinum

4.7/ 5

.043"26.5mm, ⌀14x1.25HR 6

DILFR6J11

Iridium-Platinum

4.7/ 5

.043"26.5mm, ⌀14x1.25HR 6

242236528

Iridium

4.5/ 5

.028"26.5mm, ⌀14x1.25HR 7

242236528

Iridium

4.5/ 5

.028"26.5mm, ⌀14x1.25HR 7

SILFR6A

Iridium-Platinum

4.4/ 5

.031"26.5mm, ⌀14x1.25HR 6

SILFR6A11

Iridium-Platinum

4.4/ 5

.043"26.5mm, ⌀14x1.25HR 6

SILFR6A11

Iridium-Platinum

4.4/ 5

.043"26.5mm, ⌀14x1.25HR 6

SILFR6A11

Iridium-Platinum

4.4/ 5

.043"26.5mm, ⌀14x1.25HR 6

SILFR6A

Iridium-Platinum

4.4/ 5

.031"26.5mm, ⌀14x1.25HR 6

SILFR6A

Iridium-Platinum

4.4/ 5

.031"26.5mm, ⌀14x1.25HR 6

SILFR6A11

Iridium-Platinum

4.4/ 5

.043"26.5mm, ⌀14x1.25HR 6

SILFR6B8

Iridium-Platinum

4.3/ 5

.031"26.5mm, ⌀14x1.25HR 6

SILFR6C11

Iridium-Platinum

4.3/ 5

.043"26.5mm, ⌀14x1.25HR 6

IKH20

Copper-Iridium

4.3/ 5

.043"26.5mm, ⌀14x1.25HR 20

SILFR6C11

Iridium-Platinum

4.3/ 5

.043"26.5mm, ⌀14x1.25HR 6

SILFR6C11

Iridium-Platinum

4.3/ 5

.043"26.5mm, ⌀14x1.25HR 6

SILFR6B8

Iridium-Platinum

4.3/ 5

.031"26.5mm, ⌀14x1.25HR 6

SILFR6B8

Iridium-Platinum

4.3/ 5

.031"26.5mm, ⌀14x1.25HR 6

SILFR6C11

Iridium-Platinum

4.3/ 5

.043"26.5mm, ⌀14x1.25HR 6

ILFR6A

Iridium-Platinum

-

4.2/ 5

.031"26.5mm, ⌀14x1.25HR 6

ILFR6J-11K

Iridium-Platinum

-

4.2/ 5

.043"26.5mm, ⌀14x1.25HR 6

ILZFR6D11

Iridium-Platinum

-

4.2/ 5

.043"26.5mm, ⌀14x1.25HR 6

VKH20

Iridium-Platinum

-

4.2/ 5

.043"26.5mm, ⌀14x1.25HR 20

LZFR6AI

Iridium-Platinum

-

4.2/ 5

.031"26.5mm, ⌀14x1.25HR 6

ILFR6A

Iridium-Platinum

-

4.2/ 5

.031"26.5mm, ⌀14x1.25HR 6

ILFR6A

Iridium-Platinum

-

4.2/ 5

.031"26.5mm, ⌀14x1.25HR 6

LZFR6AI

Iridium-Platinum

-

4.2/ 5

.031"26.5mm, ⌀14x1.25HR 6

ILZFR6D11

Iridium-Platinum

-

4.2/ 5

.043"26.5mm, ⌀14x1.25HR 6

ILFR6A

Iridium-Platinum

-

4.2/ 5

.031"26.5mm, ⌀14x1.25HR 6

ILFR6J-11K

Iridium-Platinum

-

4.2/ 5

.043"26.5mm, ⌀14x1.25HR 6

ILZFR6D11

Iridium-Platinum

-

4.2/ 5

.043"26.5mm, ⌀14x1.25HR 6

PLFR6C-10G

Platinum

3.8/ 5

.039"26.5mm, ⌀14x1.25HR 6

PLZFR6A-11S

Platinum

3.8/ 5

.043"26.5mm, ⌀14x1.25HR 6

LFR6AIX-11

Copper-Iridium

3.8/ 5

.043"26.5mm, ⌀14x1.25HR 6

242235769

Copper-Iridium

3.8/ 5

.039"26.5mm, ⌀14x1.25HR 7

242240619

Platinum

3.8/ 5

.031"26.5mm, ⌀14x1.25HR 6

242236510

Platinum

3.8/ 5

.039"26.5mm, ⌀14x1.25HR 7

PLZFR6A-11S

Platinum

3.8/ 5

.043"26.5mm, ⌀14x1.25HR 6

LFR6AIX-11

Copper-Iridium

3.8/ 5

.043"26.5mm, ⌀14x1.25HR 6

242240619

Platinum

3.8/ 5

.031"26.5mm, ⌀14x1.25HR 6

PLZFR6A-11S

Platinum

3.8/ 5

.043"26.5mm, ⌀14x1.25HR 6

242236510

Platinum

3.8/ 5

.039"26.5mm, ⌀14x1.25HR 7

242235769

Copper-Iridium

3.8/ 5

.039"26.5mm, ⌀14x1.25HR 7

LFR6AIX-11

Copper-Iridium

3.8/ 5

.043"26.5mm, ⌀14x1.25HR 6

PLFR6C-10G

Platinum

3.8/ 5

.039"26.5mm, ⌀14x1.25HR 6

PLZFR6A-11S

Platinum

3.8/ 5

.043"26.5mm, ⌀14x1.25HR 6

LFR6CGP

Copper-Platinum

3.5/ 5

.039"26.5mm, ⌀14x1.25HR 6

LZFR6AP11GS

Copper-Platinum

3.5/ 5

.043"26.5mm, ⌀14x1.25HR 6

242235743

Copper-Platinum

3.5/ 5

.028"26.5mm, ⌀14x1.25HR 7

242235743

Copper-Platinum

3.5/ 5

.028"26.5mm, ⌀14x1.25HR 7

LFR6CGP

Copper-Platinum

3.5/ 5

.039"26.5mm, ⌀14x1.25HR 6

LZFR6AP11GS

Copper-Platinum

3.5/ 5

.043"26.5mm, ⌀14x1.25HR 6

LFR6D

Copper

3.3/ 5

.024"26.5mm, ⌀14x1.25HR 6

Same specs (1)

Products that have identical characteristics that impact interchangability

ZK20HQR8

Iridium-Platinum

-

4.2/ 5

.031"26.5mm, ⌀14x1.25HR 20

Bigger gap (14)

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

SK20HR11

Iridium-Platinum

-

4.2/ 5

.043"26.5mm, ⌀14x1.25HR 20

SK20HPR-L11

Iridium-Platinum

-

4.2/ 5

.043"26.5mm, ⌀14x1.25HR 20

SK20HR-A11

Iridium-Platinum

-

4.2/ 5

.043"26.5mm, ⌀14x1.25HR 20

VKH20

Iridium-Platinum

-

4.2/ 5

.043"26.5mm, ⌀14x1.25HR 20

ILFR6J-11K

Iridium-Platinum

-

4.2/ 5

.043"26.5mm, ⌀14x1.25HR 6

ILFR6T-11

Iridium-Platinum

-

4.2/ 5

.043"26.5mm, ⌀14x1.25HR 6

PLFR6C-10G

Platinum

3.8/ 5

.039"26.5mm, ⌀14x1.25HR 6

PLFR6A-11

Platinum

3.8/ 5

.043"26.5mm, ⌀14x1.25HR 6

LFR6AIX-11

Copper-Iridium

3.8/ 5

.043"26.5mm, ⌀14x1.25HR 6

LFR6CGP

Copper-Platinum

3.5/ 5

.039"26.5mm, ⌀14x1.25HR 6

LFR6A-11

Copper

3.1/ 5

.043"26.5mm, ⌀14x1.25HR 6

LFR6A-11 BLYB

Copper

3.1/ 5

.043"26.5mm, ⌀14x1.25HR 6

LFR6C-11

Copper

3.1/ 5

.043"26.5mm, ⌀14x1.25HR 6

LFR6A

Copper

3.1/ 5

.035"26.5mm, ⌀14x1.25HR 6

One step colder (2)

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

VKH22

Iridium-Platinum

-

4.2/ 5

.031"26.5mm, ⌀14x1.25HR 22

LFR7AIX

Copper-Iridium

3.8/ 5

.031"26.5mm, ⌀14x1.25HR 7