NGK R5671A-7 Spark Plug

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Rating

3.1 / 5 Overall
NGK	R5671A-7
Brand	Code
3.0 / 5 Materials
Copper	Copper
Ground electrode	Center electrode
3.3 / 5 Design
Standard	V-Cut
Ground type	Center type

Specifications

0.8mm (.031")	7
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

IK22

Copper-Iridium

4.3/ 5

.031"19mm, ⌀14x1.25HR 22

C63CX

Copper

3.3/ 5

.035"19mm, ⌀14x1.25HR 63

AR3935

Copper

3.3/ 5

.024"19mm, ⌀14x1.25HR 5

W22ES-U

Copper

3.3/ 5

.031"19mm, ⌀14x1.25HR 22

W5CC

Copper

2.9/ 5

.020"19mm, ⌀14x1.25HR 5

403

Copper

2.9/ 5

.035"19mm, ⌀14x1.25HR 7

Deep reference (54)

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

XS3922

Iridium-Platinum

4.2/ 5

.039"19mm, ⌀14x1.25HR 1

XST4055

Iridium-Platinum

4.2/ 5

.024"19mm, ⌀14x1.25HR 7

XST4055

Iridium-Platinum

4.2/ 5

.024"19mm, ⌀14x1.25HR 7

BKR7EIX

Copper-Iridium

3.8/ 5

.031"19mm, ⌀14x1.25HR 7

FR5DPP222

Platinum

3.8/ 5

.039"19mm, ⌀14x1.25HR 5

PFR7AB

Platinum

3.8/ 5

.031"19mm, ⌀14x1.25HR 7

PFR7B

Platinum

3.8/ 5

.028"19mm, ⌀14x1.25HR 7

PFR7G11

Platinum

3.8/ 5

.043"19mm, ⌀14x1.25HR 7

PFR7N-D

Platinum

3.8/ 5

.024"19mm, ⌀14x1.25HR 7

PFR7Q

Platinum

3.8/ 5

.031"19mm, ⌀14x1.25HR 7

PFR7S8EG

Platinum

3.8/ 5

.031"19mm, ⌀14x1.25HR 7

BKR7EIX-11

Copper-Iridium

3.8/ 5

.043"19mm, ⌀14x1.25HR 7

RC7PYCB

Copper-Platinum

3.5/ 5

.030"19mm, ⌀14x1.25HR 7

RC7PYCB4

Copper-Platinum

3.5/ 5

.039"19mm, ⌀14x1.25HR 7

FR5DTC

Copper

3.3/ 5

.031"19mm, ⌀14x1.25HR 5

242245018

Copper

3.3/ 5

.031"19mm, ⌀14x1.25HR 5

BCPR7ET

Copper

3.3/ 5

.035"19mm, ⌀14x1.25HR 7

BKR7EKC-N

Copper

3.3/ 5

.031"19mm, ⌀14x1.25HR 7

BKUR7ET

Copper

3.3/ 5

.031"19mm, ⌀14x1.25HR 7

RC7BMC

Copper

3.3/ 5

.033"19mm, ⌀14x1.25HR 7

RC7BYC

Copper

3.3/ 5

.063"19mm, ⌀14x1.25HR 7

W22ES-U

Copper

3.3/ 5

.031"19mm, ⌀14x1.25HR 22

W20ETRL

Copper

3.3/ 5

.039"19mm, ⌀14x1.25HR 20

W20ESR-U

Copper

3.3/ 5

.031"19mm, ⌀14x1.25HR 20

W20ETR-S

Copper

3.3/ 5

.039"19mm, ⌀14x1.25HR 20

W20ET-S

Copper

3.3/ 5

.039"19mm, ⌀14x1.25HR 20

W22ESR-U

Copper

3.3/ 5

.031"19mm, ⌀14x1.25HR 22

W22ES-U

Copper

3.3/ 5

.031"19mm, ⌀14x1.25HR 22

W24ESR-U

Copper

3.3/ 5

.031"19mm, ⌀14x1.25HR 24

BKR7E

Copper

-

3.1/ 5

.035"19mm, ⌀14x1.25HR 7

BKR7E-E

Copper

-

3.1/ 5

.031"19mm, ⌀14x1.25HR 7

BKR7EKU

Copper

-

3.1/ 5

.024"19mm, ⌀14x1.25HR 7

ZFR7F

Copper

-

3.1/ 5

.031"19mm, ⌀14x1.25HR 7

FR5DC

Copper

2.9/ 5

.031"19mm, ⌀14x1.25HR 5

3922

Copper

2.9/ 5

.039"19mm, ⌀14x1.25HR 1

RC7YC

Copper

2.9/ 5

.035"19mm, ⌀14x1.25HR 7

W5CC

Copper

2.9/ 5

.020"19mm, ⌀14x1.25HR 5

B7ES

Copper

2.9/ 5

.031"19mm, ⌀14x1.25HR 7

4055

Copper

2.9/ 5

.024"19mm, ⌀14x1.25HR 7

N4C

Copper

2.9/ 5

.026"19mm, ⌀14x1.25HR 4

403

Copper

2.9/ 5

.035"19mm, ⌀14x1.25HR 7

403

Copper

2.9/ 5

.035"19mm, ⌀14x1.25HR 7

4055

Copper

2.9/ 5

.024"19mm, ⌀14x1.25HR 7

B7ES

Copper

2.9/ 5

.031"19mm, ⌀14x1.25HR 7

W5CC

Copper

2.9/ 5

.020"19mm, ⌀14x1.25HR 5

N3C

Copper

2.9/ 5

.026"19mm, ⌀14x1.25HR 3

N4C

Copper

2.9/ 5

.026"19mm, ⌀14x1.25HR 4

RN4C

Copper

2.9/ 5

.024"19mm, ⌀14x1.25HR 4

W20EKR-S11

Copper

2.9/ 5

.043"19mm, ⌀14x1.25HR 20

B6EBL-11

Copper

2.9/ 5

.043"19mm, ⌀14x1.25HR 6

B7EB-11

Copper

2.9/ 5

.043"19mm, ⌀14x1.25HR 7

BR6EB-L-11

Copper

2.9/ 5

.043"19mm, ⌀14x1.25HR 6

BUR7EB-11

Copper

2.9/ 5

.043"19mm, ⌀14x1.25HR 7

BR6ES

Copper

2.9/ 5

.035"19mm, ⌀14x1.25HR 6

One step colder (1)

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

R5671A-8

Copper

-

3.1/ 5

.031"19mm, ⌀14x1.25HR 8

Two steps colder (1)

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

R5671A-9

Copper

-

3.1/ 5

.031"19mm, ⌀14x1.25HR 9