NGK R4118S-75 Spark Plug

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Rating

3.4 / 5 Overall
NGK	R4118S-75
Brand	Code
3.3 / 5 Materials
Copper	Gold-Palladium
Ground electrode	Center electrode
3.5 / 5 Design
Standard	Fine Wire
Ground type	Center type

Specifications

0.65mm (.026")	7.5
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

Two steps colder (1)

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

R4118S-95

Copper-Gold-Palladium

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3.4/ 5

.026"19mm, ⌀14x1.25HR 9.5