NGK BR7EIX 6664 Spark Plug

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Rating

3.8 / 5 Overall
NGK	BR7EIX
Brand	Code
4.0 / 5 Materials
Copper	Iridium
Ground electrode	Center electrode
3.5 / 5 Design
Standard	Fine Wire
Ground type	Center type

Specifications

0.8mm (.031")	7
Gap	Heat range
⌀14mm	1.25mm
Thread diameter	Thread pitch
19mm (3/4")	21mm (13/16")
Reach	Hex size
Gasket	Removable Nut
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

XS4064

Iridium-Platinum

4.2/ 5

.031"19mm, ⌀14x1.25HR 4

XS4064DP

Iridium-Platinum

4.2/ 5

.031"19mm, ⌀14x1.25HR 4

W22ESR-U

Copper

3.3/ 5

.031"19mm, ⌀14x1.25HR 22

4054

Copper

2.9/ 5

.031"19mm, ⌀14x1.25HR 4

Deep reference (26)

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

IW24

Copper-Iridium

4.3/ 5

.028"19mm, ⌀14x1.25HR 24

IW24

Copper-Iridium

4.3/ 5

.028"19mm, ⌀14x1.25HR 24

XST4055

Iridium-Platinum

4.2/ 5

.024"19mm, ⌀14x1.25HR 7

W24ESR-U

Copper

3.3/ 5

.031"19mm, ⌀14x1.25HR 24

W24ES-U

Copper

3.3/ 5

.031"19mm, ⌀14x1.25HR 24

W24ESR-U

Copper

3.3/ 5

.031"19mm, ⌀14x1.25HR 24

W24ES-U

Copper

3.3/ 5

.031"19mm, ⌀14x1.25HR 24

W24ESR-V

Copper

3.2/ 5

.024"19mm, ⌀14x1.25HR 24

W24ES-V

Copper

3.2/ 5

.024"19mm, ⌀14x1.25HR 24

W24ESR-V

Copper

3.2/ 5

.024"19mm, ⌀14x1.25HR 24

W24ES-V

Copper

3.2/ 5

.024"19mm, ⌀14x1.25HR 24

N3C

Copper

2.9/ 5

.026"19mm, ⌀14x1.25HR 3

B7ES

Copper

2.9/ 5

.031"19mm, ⌀14x1.25HR 7

B7ES-11

Copper

2.9/ 5

.043"19mm, ⌀14x1.25HR 7

BR7ES

Copper

2.9/ 5

.031"19mm, ⌀14x1.25HR 7

BR7ES-11

Copper

2.9/ 5

.043"19mm, ⌀14x1.25HR 7

BR7ES

Copper

2.9/ 5

.031"19mm, ⌀14x1.25HR 7

403

Copper

2.9/ 5

.035"19mm, ⌀14x1.25HR 7

RN4C

Copper

2.9/ 5

.024"19mm, ⌀14x1.25HR 4

4055

Copper

2.9/ 5

.024"19mm, ⌀14x1.25HR 7

N3C

Copper

2.9/ 5

.026"19mm, ⌀14x1.25HR 3

B7ES

Copper

2.9/ 5

.031"19mm, ⌀14x1.25HR 7

B7ES-11

Copper

2.9/ 5

.043"19mm, ⌀14x1.25HR 7

BR7ES

Copper

2.9/ 5

.031"19mm, ⌀14x1.25HR 7

BR7ES-11

Copper

2.9/ 5

.043"19mm, ⌀14x1.25HR 7

B8ES

Copper

2.9/ 5

.031"19mm, ⌀14x1.25HR 8

Same specs (2)

Products that have identical characteristics that impact interchangability

BR7ES

Copper

2.9/ 5

.031"19mm, ⌀14x1.25HR 7

BR7ES SOLID

Copper

2.9/ 5

.031"19mm, ⌀14x1.25HR 7

Bigger gap (3)

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

BUR7EA-11

Copper

3.1/ 5

.043"19mm, ⌀14x1.25HR 7

W22EKR-S11

Copper

2.9/ 5

.043"19mm, ⌀14x1.25HR 22

BUR7EB-11

Copper

2.9/ 5

.043"19mm, ⌀14x1.25HR 7

One step colder (4)

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

BR8EIX

Copper-Iridium

-

3.8/ 5

.031"19mm, ⌀14x1.25HR 8

BR8EIX SOLID

Copper-Iridium

-

3.8/ 5

.031"19mm, ⌀14x1.25HR 8

BR8ES SOLID

Copper

2.9/ 5

.031"19mm, ⌀14x1.25HR 8

BR8ES

Copper

2.9/ 5

.031"19mm, ⌀14x1.25HR 8

Two steps colder (6)

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

BR9EIX SOLID

Copper-Iridium

-

3.8/ 5

.031"19mm, ⌀14x1.25HR 9

BR9EIX

Copper-Iridium

-

3.8/ 5

.031"19mm, ⌀14x1.25HR 9

BR9EG-N-8

Copper

3.2/ 5

.031"19mm, ⌀14x1.25HR 9

BR9EYA

Copper

3.1/ 5

.031"19mm, ⌀14x1.25HR 9

BR9ES SOLID

Copper

2.9/ 5

.031"19mm, ⌀14x1.25HR 9

BR9ES

Copper

2.9/ 5

.031"19mm, ⌀14x1.25HR 9