Denso IU27 5363 Spark Plug

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Rating
Brand	Code
4.3 / 5 Overall
Denso	IU27
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
0.9mm (.035")	27
⌀10mm	1mm
Thread diameter	Thread pitch
19mm (3/4")	16mm (5/8")
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 (7)

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

CR9EIX

Copper-Iridium

3.8/ 5

.031"19mm, ⌀10x1HR 9

PMR9B

Platinum

3.8/ 5

.028"19mm, ⌀10x1HR 9

RG4PHP

Platinum

3.6/ 5

.020"19mm, ⌀10x1HR 4

C9E

Copper

2.9/ 5

.031"19mm, ⌀10x1HR 9

CR9E

Copper

2.9/ 5

.031"19mm, ⌀10x1HR 9

CR9EB

Copper

2.9/ 5

.031"19mm, ⌀10x1HR 9

RG4HC

Copper

2.9/ 5

.028"19mm, ⌀10x1HR 4

Deep reference (20)

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

XS4302

Iridium-Platinum

4.2/ 5

.031"19mm, ⌀10x1HR 1

XS4302

Iridium-Platinum

4.2/ 5

.031"19mm, ⌀10x1HR 1

XS4302

Iridium-Platinum

4.2/ 5

.031"19mm, ⌀10x1HR 1

XS4302

Iridium-Platinum

4.2/ 5

.031"19mm, ⌀10x1HR 1

XS4302

Iridium-Platinum

4.2/ 5

.031"19mm, ⌀10x1HR 1

PMR8A

Platinum

3.8/ 5

.028"19mm, ⌀10x1HR 8

RG4YCX

Copper

2.9/ 5

.030"19mm, ⌀10x1HR 4

4302

Copper

2.9/ 5

.031"19mm, ⌀10x1HR 1

4302

Copper

2.9/ 5

.031"19mm, ⌀10x1HR 1

MR7F

Copper

2.9/ 5

.031"19mm, ⌀10x1HR 7

U27ESN

Copper

2.9/ 5

.031"19mm, ⌀10x1HR 27

4302

Copper

2.9/ 5

.031"19mm, ⌀10x1HR 1

RG4HC

Copper

2.9/ 5

.028"19mm, ⌀10x1HR 4

RG6HCC

Copper

2.9/ 5

.033"19mm, ⌀10x1HR 6

U27ESRN

Copper

2.9/ 5

.031"19mm, ⌀10x1HR 27

4302

Copper

2.9/ 5

.031"19mm, ⌀10x1HR 1

RG4HC

Copper

2.9/ 5

.028"19mm, ⌀10x1HR 4

4302

Copper

2.9/ 5

.031"19mm, ⌀10x1HR 1

CR9EB

Copper

2.9/ 5

.031"19mm, ⌀10x1HR 9

CR9E

Copper

2.9/ 5

.031"19mm, ⌀10x1HR 9

Same specs (1)

Products that have identical characteristics that impact interchangability

IUH27

Copper-Iridium

4.3/ 5

.035"19mm, ⌀10x1HR 27

One step colder (1)

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

IU31

Copper-Iridium

4.3/ 5

.035"19mm, ⌀10x1HR 31