Denso IKH24 Spark Plug

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Rating
Brand	Code
4.3 / 5 Overall
Denso	IKH24
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")	24
⌀14mm	1.25mm
Thread diameter	Thread pitch
26.5mm (1.04")	16mm (5/8")
Reach	Hex size
Gasket	Solid
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 (1)

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

R7437-8

Copper-Iridium

3.8/ 5

.028"26.5mm, ⌀14x1.25HR 8

One step colder (1)

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

IKH27

Copper-Iridium

-

4.3/ 5

.031"26.5mm, ⌀14x1.25HR 27