NGK R5671A-10 Spark Plug

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Rating

3.1 / 5 Overall
NGK	R5671A-10
Brand	Code
3.0 / 5 Materials
Copper	Copper
Ground electrode	Center electrode
3.3 / 5 Design
Standard	V-Cut
Ground type	Center type

Specifications

0.5mm (.020")	10
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 (9)

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

IK31

Copper-Iridium

4.3/ 5

.031"19mm, ⌀14x1.25HR 31

C57

Copper

3.5/ 5

.026"19mm, ⌀14x1.25HR 57

C55CX

Copper

3.3/ 5

.035"19mm, ⌀14x1.25HR 55

C57CX

Copper

3.3/ 5

.035"19mm, ⌀14x1.25HR 57

AR3931

Copper

3.3/ 5

.024"19mm, ⌀14x1.25HR 1

AR3932

Copper

3.3/ 5

.024"19mm, ⌀14x1.25HR 2

AR2592

Copper

3.3/ 5

.024"19mm, ⌀14x1.25HR 1

C55

Copper

3.2/ 5

.026"19mm, ⌀14x1.25HR 55

AR3932X

Copper

0.0/ 5

.031"19mm, ⌀14x1.25HR 2

Deep reference (22)

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

IK01-31

Iridium-Platinum

4.5/ 5

.028"19mm, ⌀14x1.25HR 31

IK01-31

Iridium-Platinum

4.5/ 5

.028"19mm, ⌀14x1.25HR 31

IK02-31

Iridium-Platinum

4.3/ 5

.028"19mm, ⌀14x1.25HR 31

BR10HIX

Copper-Iridium

3.8/ 5

.031"12.7mm, ⌀14x1.25HR 10

BR10EIX

Copper-Iridium

3.8/ 5

.031"19mm, ⌀14x1.25HR 10

C57

Copper

3.5/ 5

.026"19mm, ⌀14x1.25HR 57

C59

Copper

3.5/ 5

.026"19mm, ⌀14x1.25HR 59

QC57C

Copper

3.3/ 5

.026"19mm, ⌀14x1.25HR 57

AR3932

Copper

3.3/ 5

.024"19mm, ⌀14x1.25HR 2

AR3933

Copper

3.3/ 5

.024"19mm, ⌀14x1.25HR 3

W27ES-U

Copper

3.3/ 5

.028"19mm, ⌀14x1.25HR 27

BR7ET

Copper

3.3/ 5

.041"19mm, ⌀14x1.25HR 7

R6061-10

Copper

3.3/ 5

.031"19mm, ⌀14x1.25HR 10

QC57

Copper

3.2/ 5

.026"19mm, ⌀14x1.25HR 57

QC59

Copper

3.2/ 5

.026"19mm, ⌀14x1.25HR 59

BR10EG

Copper

3.2/ 5

.024"19mm, ⌀14x1.25HR 10

R5672A-10

Copper

-

3.1/ 5

.020"19mm, ⌀14x1.25HR 10

R5671A-11

Copper

-

3.1/ 5

.020"19mm, ⌀14x1.25HR 11

BR10EYA

Copper

-

3.1/ 5

.031"19mm, ⌀14x1.25HR 10

C57YC

Copper

2.9/ 5

.026"19mm, ⌀14x1.25HR 57

B10ES

Copper

2.9/ 5

.020"19mm, ⌀14x1.25HR 10

BR10ES

Copper

2.9/ 5

.031"19mm, ⌀14x1.25HR 10

One step colder (1)

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

R5671A-11

Copper

-

3.1/ 5

.020"19mm, ⌀14x1.25HR 11