NGK R6021E-85 Spark Plug

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Rating
Brand	Code
3.2 / 5 Overall
NGK	R6021E-85
3.0 / 5 Materials
Copper	Copper
Ground electrode	Center electrode
3.5 / 5 Design
Standard	Fine Wire
Ground type	Center type

Specifications
Gap	Heat range
0.65mm (.026")	8.5
⌀14mm	1.25mm
Thread diameter	Thread pitch
19mm (3/4")	21mm (13/16")
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

Same specs (1)

Products that have identical characteristics that impact interchangability

R4118S-85

Copper-Gold-Palladium

3.4/ 5

.026"19mm, ⌀14x1.25HR 8.5

One step colder (1)

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

R6021E-95

Copper

-

3.2/ 5

.026"19mm, ⌀14x1.25HR 9.5