Denso IWF20 Spark Plug

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Rating
Brand	Code
4.3 / 5 Overall
Denso	IWF20
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")	20
⌀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 (11)

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

BPR6HIX

Copper-Iridium

3.8/ 5

.031"12.7mm, ⌀14x1.25HR 6

BR6HIX

Copper-Iridium

3.8/ 5

.031"12.7mm, ⌀14x1.25HR 6

WR6BC

Copper

2.9/ 5

.028"12.7mm, ⌀14x1.25HR 6

BP6HS

Copper

2.9/ 5

.028"12.7mm, ⌀14x1.25HR 6

BPR6HS

Copper

2.9/ 5

.028"12.7mm, ⌀14x1.25HR 6

BPR6HSA

Copper

2.9/ 5

.028"12.7mm, ⌀14x1.25HR 6

BR6HSA

Copper

2.9/ 5

.028"12.7mm, ⌀14x1.25HR 6

4123

Copper

2.9/ 5

.028"12.7mm, ⌀14x1.25HR 4

L87YC

Copper

2.9/ 5

.024"12.7mm, ⌀14x1.25HR 87

QL87YC

Copper

2.9/ 5

.030"12.7mm, ⌀14x1.25HR 87

RL87YC

Copper

2.9/ 5

.039"12.7mm, ⌀14x1.25HR 87

Deep reference (69)

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

IWF22

Copper-Iridium

4.3/ 5

.031"12.7mm, ⌀14x1.25HR 22

IWF22

Copper-Iridium

4.3/ 5

.031"12.7mm, ⌀14x1.25HR 22

IWF24

Copper-Iridium

4.3/ 5

.031"12.7mm, ⌀14x1.25HR 24

XS4123DP

Iridium-Platinum

4.2/ 5

.028"12.7mm, ⌀14x1.25HR 4

XS4093

Iridium-Platinum

4.2/ 5

.031"12.7mm, ⌀14x1.25HR 4

BPR6HIX

Copper-Iridium

3.8/ 5

.031"12.7mm, ⌀14x1.25HR 6

BPR7HIX

Copper-Iridium

3.8/ 5

.031"12.7mm, ⌀14x1.25HR 7

RL85G

Copper

3.3/ 5

.016"12.7mm, ⌀14x1.25HR 85

W20FPR-U

Copper

3.3/ 5

.028"12.7mm, ⌀14x1.25HR 20

W20FP-U

Copper

3.3/ 5

.028"12.7mm, ⌀14x1.25HR 20

W20FPR-U

Copper

3.3/ 5

.028"12.7mm, ⌀14x1.25HR 20

W16FPR-U

Copper

3.3/ 5

.028"12.7mm, ⌀14x1.25HR 16

W16FP-U

Copper

3.3/ 5

.028"12.7mm, ⌀14x1.25HR 16

W20FPR-U

Copper

3.3/ 5

.028"12.7mm, ⌀14x1.25HR 20

W20FP-U

Copper

3.3/ 5

.028"12.7mm, ⌀14x1.25HR 20

W22FPR-U

Copper

3.3/ 5

.028"12.7mm, ⌀14x1.25HR 22

W20FP-U

Copper

3.3/ 5

.028"12.7mm, ⌀14x1.25HR 20

W20FPR-U

Copper

3.3/ 5

.028"12.7mm, ⌀14x1.25HR 20

W20FPR-U

Copper

3.3/ 5

.028"12.7mm, ⌀14x1.25HR 20

AP425

Copper-Platinum

3.2/ 5

.030"12.7mm, ⌀14x1.25HR 6

275

Copper

2.9/ 5

.024"12.7mm, ⌀14x1.25HR 6

4123

Copper

2.9/ 5

.028"12.7mm, ⌀14x1.25HR 4

4093

Copper

2.9/ 5

.031"12.7mm, ⌀14x1.25HR 4

275

Copper

2.9/ 5

.024"12.7mm, ⌀14x1.25HR 6

BPR6HS

Copper

2.9/ 5

.028"12.7mm, ⌀14x1.25HR 6

L82YC

Copper

2.9/ 5

.031"12.7mm, ⌀14x1.25HR 82

L87YC

Copper

2.9/ 5

.024"12.7mm, ⌀14x1.25HR 87

WR6BC NS

Copper

2.9/ 5

.028"12.7mm, ⌀14x1.25HR 6

4123

Copper

2.9/ 5

.028"12.7mm, ⌀14x1.25HR 4

4123

Copper

2.9/ 5

.028"12.7mm, ⌀14x1.25HR 4

WR6BC

Copper

2.9/ 5

.028"12.7mm, ⌀14x1.25HR 6

WR7BC+

Copper

2.9/ 5

.031"12.7mm, ⌀14x1.25HR 7

327C

Copper

2.9/ 5

.039"12.7mm, ⌀14x1.25HR 87

QL82YC

Copper

2.9/ 5

.035"12.7mm, ⌀14x1.25HR 82

QL87YC

Copper

2.9/ 5

.030"12.7mm, ⌀14x1.25HR 87

RL82YC

Copper

2.9/ 5

.035"12.7mm, ⌀14x1.25HR 82

RL87YC

Copper

2.9/ 5

.039"12.7mm, ⌀14x1.25HR 87

WR6BC NS

Copper

2.9/ 5

.028"12.7mm, ⌀14x1.25HR 6

WR6BC+

Copper

2.9/ 5

.028"12.7mm, ⌀14x1.25HR 6

W20FPR-L

Copper

2.9/ 5

.028"12.7mm, ⌀14x1.25HR 20

275

Copper

2.9/ 5

.024"12.7mm, ⌀14x1.25HR 6

4123

Copper

2.9/ 5

.028"12.7mm, ⌀14x1.25HR 4

414

Copper

2.9/ 5

.024"12.7mm, ⌀14x1.25HR 5

L82YC

Copper

2.9/ 5

.031"12.7mm, ⌀14x1.25HR 82

L87YC

Copper

2.9/ 5

.024"12.7mm, ⌀14x1.25HR 87

L92YC

Copper

2.9/ 5

.030"12.7mm, ⌀14x1.25HR 92

RL82YC

Copper

2.9/ 5

.035"12.7mm, ⌀14x1.25HR 82

RL87YC

Copper

2.9/ 5

.039"12.7mm, ⌀14x1.25HR 87

RL95YC

Copper

2.9/ 5

.035"12.7mm, ⌀14x1.25HR 95

BP4HS-10

Copper

2.9/ 5

.039"12.7mm, ⌀14x1.25HR 4

BP5HS

Copper

2.9/ 5

.028"12.7mm, ⌀14x1.25HR 5

BP6HS

Copper

2.9/ 5

.028"12.7mm, ⌀14x1.25HR 6

BP6HS-10

Copper

2.9/ 5

.039"12.7mm, ⌀14x1.25HR 6

BP7HS

Copper

2.9/ 5

.028"12.7mm, ⌀14x1.25HR 7

BP7HS-10

Copper

2.9/ 5

.039"12.7mm, ⌀14x1.25HR 7

BPR4HS-10

Copper

2.9/ 5

.039"12.7mm, ⌀14x1.25HR 4

BPR5HS

Copper

2.9/ 5

.028"12.7mm, ⌀14x1.25HR 5

BPR6HS

Copper

2.9/ 5

.028"12.7mm, ⌀14x1.25HR 6

BPR6HS-10

Copper

2.9/ 5

.039"12.7mm, ⌀14x1.25HR 6

BPR6HSA

Copper

2.9/ 5

.028"12.7mm, ⌀14x1.25HR 6

BPR7HS

Copper

2.9/ 5

.028"12.7mm, ⌀14x1.25HR 7

BPR7HS-10

Copper

2.9/ 5

.039"12.7mm, ⌀14x1.25HR 7

275

Copper

2.9/ 5

.024"12.7mm, ⌀14x1.25HR 6

4123

Copper

2.9/ 5

.028"12.7mm, ⌀14x1.25HR 4

BP6HS

Copper

2.9/ 5

.028"12.7mm, ⌀14x1.25HR 6

BPR6HS

Copper

2.9/ 5

.028"12.7mm, ⌀14x1.25HR 6

275

Copper

2.9/ 5

.024"12.7mm, ⌀14x1.25HR 6

4123

Copper

2.9/ 5

.028"12.7mm, ⌀14x1.25HR 4

BPR6HS

Copper

2.9/ 5

.028"12.7mm, ⌀14x1.25HR 6

Bigger gap (1)

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

W20FPRU10

Copper

3.3/ 5

.039"12.7mm, ⌀14x1.25HR 20