Denso S31A Spark Plug

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Rating
Brand	Code
3.2 / 5 Overall
Denso	S31A
3.0 / 5 Materials
Copper	Copper
Ground electrode	Center electrode
3.5 / 5 Design
Surface Discharge	Standard
Ground type	Center type

Specifications
Gap	Heat range
1.4mm (.055")	31
⌀14mm	1.25mm
Thread diameter	Thread pitch
21.5mm (.846")	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

Cross-reference (1)

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

BUR9EQ

Copper

0.0/ 5

.055"19mm, ⌀14x1.25HR 9

Deep reference (2)

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

IRE01-27

Iridium-Platinum

4.3/ 5

.028"21.5mm, ⌀14x1.25HR 27

W27EDR14

Copper

3.3/ 5

.055"20mm, ⌀14x1.25HR 27