NGK KR8AI Spark Plug

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Rating

4.2 / 5 Overall
NGK	KR8AI
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")	8
Gap	Heat range
⌀12mm	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 (4)

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

IXU24

Copper-Iridium

4.3/ 5

.035"19mm, ⌀12x1.25HR 24

VXU24

Iridium-Platinum

-

4.2/ 5

.035"19mm, ⌀12x1.25HR 24

XS4162

Iridium-Platinum

-

4.2/ 5

.028"19mm, ⌀12x1.25HR 1

4162

Copper

2.9/ 5

.028"19mm, ⌀12x1.25HR 1

Deep reference (48)

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

IX27B

Copper-Iridium

4.3/ 5

.035"19mm, ⌀12x1.25HR 27

IX27B

Copper-Iridium

4.3/ 5

.035"19mm, ⌀12x1.25HR 27

KR8BI

Iridium-Platinum

-

4.2/ 5

.030"19mm, ⌀12x1.25HR 8

KR8BI

Iridium-Platinum

-

4.2/ 5

.030"19mm, ⌀12x1.25HR 8

DCPR8EIX

Copper-Iridium

3.8/ 5

.031"19mm, ⌀12x1.25HR 8

DCPR8EIX

Copper-Iridium

3.8/ 5

.031"19mm, ⌀12x1.25HR 8

DCPR9EIX

Copper-Iridium

3.8/ 5

.031"19mm, ⌀12x1.25HR 9

DPR9EIX-9

Copper-Iridium

3.8/ 5

.035"19mm, ⌀12x1.25HR 9

DPR9EIX-9

Copper-Iridium

3.8/ 5

.035"19mm, ⌀12x1.25HR 9

DCPR8EKP

Copper-Platinum

3.6/ 5

.035"19mm, ⌀12x1.25HR 8

DCPR8EKP

Copper-Platinum

3.6/ 5

.035"19mm, ⌀12x1.25HR 8

DCPR8EKP

Copper-Platinum

3.6/ 5

.035"19mm, ⌀12x1.25HR 8

DCPR8EKP

Copper-Platinum

3.6/ 5

.035"19mm, ⌀12x1.25HR 8

DPR9EVX-9

Copper-Platinum

3.5/ 5

.035"19mm, ⌀12x1.25HR 9

DP9EVX-9

Copper-Platinum

3.5/ 5

.035"19mm, ⌀12x1.25HR 9

DPR9EVX-9

Copper-Platinum

3.5/ 5

.035"19mm, ⌀12x1.25HR 9

DP9EVX-9

Copper-Platinum

3.5/ 5

.035"19mm, ⌀12x1.25HR 9

DPR9EV-9

Copper-Gold-Palladium

3.4/ 5

.035"19mm, ⌀12x1.25HR 9

DP9EV-9

Copper-Gold-Palladium

3.4/ 5

.035"19mm, ⌀12x1.25HR 9

DPR9EV-9

Copper-Gold-Palladium

3.4/ 5

.035"19mm, ⌀12x1.25HR 9

DP9EV-9

Copper-Gold-Palladium

3.4/ 5

.035"19mm, ⌀12x1.25HR 9

DCPR8EKC

Copper

3.3/ 5

.035"19mm, ⌀12x1.25HR 8

DCPR8EKC

Copper

3.3/ 5

.035"19mm, ⌀12x1.25HR 8

XR2CS

Copper-Silver

3.3/ 5

.028"19mm, ⌀12x1.25HR 2

X27EPR-U9

Copper

3.3/ 5

.035"19mm, ⌀12x1.25HR 27

X27EP-U9

Copper

3.3/ 5

.035"19mm, ⌀12x1.25HR 27

XR2CS

Copper-Silver

3.3/ 5

.028"19mm, ⌀12x1.25HR 2

X27EPR-U9

Copper

3.3/ 5

.035"19mm, ⌀12x1.25HR 27

X27EP-U9

Copper

3.3/ 5

.035"19mm, ⌀12x1.25HR 27

DCPR8E

Copper

2.9/ 5

.028"19mm, ⌀12x1.25HR 8

RA4HC

Copper

2.9/ 5

.024"19mm, ⌀12x1.25HR 4

DCPR8E

Copper

2.9/ 5

.028"19mm, ⌀12x1.25HR 8

RA4HC

Copper

2.9/ 5

.024"19mm, ⌀12x1.25HR 4

RA4HC

Copper

2.9/ 5

.024"19mm, ⌀12x1.25HR 4

DCPR8E

Copper

2.9/ 5

.028"19mm, ⌀12x1.25HR 8

DCPR9E

Copper

2.9/ 5

.035"19mm, ⌀12x1.25HR 9

DP9EA-9

Copper

2.9/ 5

.035"19mm, ⌀12x1.25HR 9

DPR9EA-9

Copper

2.9/ 5

.035"19mm, ⌀12x1.25HR 9

DR8ES-L

Copper

2.9/ 5

.028"19mm, ⌀12x1.25HR 8

J9A

Copper

2.9/ 5

.028"19mm, ⌀12x1.25HR 9

RA4HC

Copper

2.9/ 5

.024"19mm, ⌀12x1.25HR 4

D9EA

Copper

2.9/ 5

.028"19mm, ⌀12x1.25HR 9

DCPR8E

Copper

2.9/ 5

.028"19mm, ⌀12x1.25HR 8

DCPR9E

Copper

2.9/ 5

.035"19mm, ⌀12x1.25HR 9

DP9EA-9

Copper

2.9/ 5

.035"19mm, ⌀12x1.25HR 9

DPR9EA-9

Copper

2.9/ 5

.035"19mm, ⌀12x1.25HR 9

DR8ES-L

Copper

2.9/ 5

.028"19mm, ⌀12x1.25HR 8

J9A

Copper

2.9/ 5

.028"19mm, ⌀12x1.25HR 9

Same specs (2)

Products that have identical characteristics that impact interchangability

KR8DI

Iridium-Platinum

-

4.2/ 5

.031"19mm, ⌀12x1.25HR 8

DCPR8EIX

Copper-Iridium

3.8/ 5

.031"19mm, ⌀12x1.25HR 8

Bigger gap (1)

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

VXU24

Iridium-Platinum

-

4.2/ 5

.035"19mm, ⌀12x1.25HR 24

One step colder (3)

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

DCPR9EIX

Copper-Iridium

3.8/ 5

.031"19mm, ⌀12x1.25HR 9

KR9E-G

Copper

2.9/ 5

.031"19mm, ⌀12x1.25HR 9

KR9C-G

Copper

2.9/ 5

.031"19mm, ⌀12x1.25HR 9