Denso IWF27 5381 Spark Plug

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Rating
Brand	Code
4.3 / 5 Overall
Denso	IWF27
4.0 / 5 Materials
Copper	Iridium
Ground electrode	Center electrode
4.8 / 5 Design
U-Groove	Fine Wire
Ground type	Center type

Specifications
Gap	Heat range
0.8mm (.031")	27
⌀14mm	1.25mm
Thread diameter	Thread pitch
12.7mm (1/2")	21mm (13/16")
Reach	Hex size
Gasket	Removable Nut
Seat	Terminal
1	Non-Projected
Ground count	Projection

Cross-reference and alternatives

How we find alternative spark plugs How we rate spark plugs

Cross-reference (10)

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

XS4092

Iridium-Platinum

4.2/ 5

.031"12.7mm, ⌀14x1.25HR 2

BR9HIX

Copper-Iridium

3.8/ 5

.031"12.7mm, ⌀14x1.25HR 9

R5530-9

Gold-Palladium-Platinum

3.8/ 5

.026"12.7mm, ⌀14x1.25HR 9

L77JC4

Copper

3.3/ 5

.039"12.7mm, ⌀14x1.25HR 77

R5525-9

Copper

3.2/ 5

.026"12.7mm, ⌀14x1.25HR 9

B9HS

Copper

2.9/ 5

.028"12.7mm, ⌀14x1.25HR 9

BR9HS

Copper

2.9/ 5

.028"12.7mm, ⌀14x1.25HR 9

2634

Copper

2.9/ 5

.039"12.7mm, ⌀14x1.25HR 1

QL77JC4

Copper

2.9/ 5

.039"12.7mm, ⌀14x1.25HR 77

411

Copper

2.9/ 5

.024"12.7mm, ⌀14x1.25HR 1

Deep reference (49)

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

IWF24

Copper-Iridium

4.3/ 5

.031"12.7mm, ⌀14x1.25HR 24

XS4092

Iridium-Platinum

4.2/ 5

.031"12.7mm, ⌀14x1.25HR 2

XS4092

Iridium-Platinum

4.2/ 5

.031"12.7mm, ⌀14x1.25HR 2

XS4092

Iridium-Platinum

4.2/ 5

.031"12.7mm, ⌀14x1.25HR 2

BR9HIX

Copper-Iridium

3.8/ 5

.031"12.7mm, ⌀14x1.25HR 9

BR8HIX

Copper-Iridium

3.8/ 5

.031"12.7mm, ⌀14x1.25HR 8

BR7HIX

Copper-Iridium

3.8/ 5

.031"12.7mm, ⌀14x1.25HR 7

W24FS-U

Copper

3.3/ 5

.028"12.7mm, ⌀14x1.25HR 24

W27FS-U10

Copper

3.3/ 5

.039"12.7mm, ⌀14x1.25HR 27

W27FS-U10

Copper

3.3/ 5

.039"12.7mm, ⌀14x1.25HR 27

W27FS-U

Copper

3.3/ 5

.028"12.7mm, ⌀14x1.25HR 27

L77JC4 MARINE

Copper

3.3/ 5

.039"12.7mm, ⌀14x1.25HR 77

L77JC4

Copper

3.3/ 5

.039"12.7mm, ⌀14x1.25HR 77

W27FS-U10

Copper

3.3/ 5

.039"12.7mm, ⌀14x1.25HR 27

W27FS-U

Copper

3.3/ 5

.028"12.7mm, ⌀14x1.25HR 27

W24FS-U

Copper

3.3/ 5

.028"12.7mm, ⌀14x1.25HR 24

QL57

Copper

3.2/ 5

.026"12.7mm, ⌀14x1.25HR 57

5828

Copper

3.2/ 5

.039"12.7mm, ⌀14x1.25HR 77

BR8HCS-10

Copper

3.1/ 5

.039"12.7mm, ⌀14x1.25HR 8

W4AC

Copper

2.9/ 5

.020"12.7mm, ⌀14x1.25HR 4

5883

Copper

2.9/ 5

.030"12.7mm, ⌀14x1.25HR 78

L78C MARINE

Copper

2.9/ 5

.031"12.7mm, ⌀14x1.25HR 78

L78C

Copper

2.9/ 5

.031"12.7mm, ⌀14x1.25HR 78

UL81C

Copper

2.9/ 5

.024"12.7mm, ⌀14x1.25HR 81

W24FSR

Copper

2.9/ 5

.028"12.7mm, ⌀14x1.25HR 24

B8HS

Copper

2.9/ 5

.024"12.7mm, ⌀14x1.25HR 8

B8HS-10

Copper

2.9/ 5

.039"12.7mm, ⌀14x1.25HR 8

B9HS

Copper

2.9/ 5

.028"12.7mm, ⌀14x1.25HR 9

B9HS-10

Copper

2.9/ 5

.039"12.7mm, ⌀14x1.25HR 9

BR8HS

Copper

2.9/ 5

.028"12.7mm, ⌀14x1.25HR 8

BR8HS-10

Copper

2.9/ 5

.039"12.7mm, ⌀14x1.25HR 8

BR8HSA

Copper

2.9/ 5

.028"12.7mm, ⌀14x1.25HR 8

BR9HS

Copper

2.9/ 5

.028"12.7mm, ⌀14x1.25HR 9

BR9HS-10

Copper

2.9/ 5

.039"12.7mm, ⌀14x1.25HR 9

4092

Copper

2.9/ 5

.031"12.7mm, ⌀14x1.25HR 2

2634

Copper

2.9/ 5

.039"12.7mm, ⌀14x1.25HR 1

B7HS-10

Copper

2.9/ 5

.039"12.7mm, ⌀14x1.25HR 7

411

Copper

2.9/ 5

.024"12.7mm, ⌀14x1.25HR 1

4092

Copper

2.9/ 5

.031"12.7mm, ⌀14x1.25HR 2

W27FSR

Copper

2.9/ 5

.028"12.7mm, ⌀14x1.25HR 27

4092

Copper

2.9/ 5

.031"12.7mm, ⌀14x1.25HR 2

5883

Copper

2.9/ 5

.030"12.7mm, ⌀14x1.25HR 78

W31FS

Copper

2.9/ 5

.028"12.7mm, ⌀14x1.25HR 31

B9HS-10

Copper

2.9/ 5

.039"12.7mm, ⌀14x1.25HR 9

BZ7HS-10

Copper

2.9/ 5

.039"12.7mm, ⌀14x1.25HR 7

W24FSR

Copper

2.9/ 5

.028"12.7mm, ⌀14x1.25HR 24

W27FSR

Copper

2.9/ 5

.028"12.7mm, ⌀14x1.25HR 27

B10HS

Copper

2.9/ 5

.028"12.7mm, ⌀14x1.25HR 10

B9HS

Copper

2.9/ 5

.028"12.7mm, ⌀14x1.25HR 9

Bigger gap (1)

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

W27FSRU10

Copper

3.3/ 5

.039"12.7mm, ⌀14x1.25HR 27