NGK BPR4ES-H Spark Plug

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Rating

2.9 / 5 Overall
NGK	BPR4ES-H
Brand	Code
3.0 / 5 Materials
Copper	Copper
Ground electrode	Center electrode
2.8 / 5 Design
Standard	Standard
Ground type	Center type

Specifications

0.9mm (.035")	4
Gap	Heat range
⌀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

Same specs (1)

Products that have identical characteristics that impact interchangability

BPR4EY

Copper

3.1/ 5

.035"19mm, ⌀14x1.25HR 4

Bigger gap (2)

0.1..0.3 mm gap increase for better performance given your ignition system can handle it

GR4IX OSN

Copper-Iridium

3.8/ 5

.039"19mm, ⌀14x1.25HR 4

BPR4ES-11

Copper

-

2.9/ 5

.043"19mm, ⌀14x1.25HR 4

One step colder (2)

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

BPR5ES SOLID

Copper

-

2.9/ 5

.035"19mm, ⌀14x1.25HR 5

BPR5ES

Copper

-

2.9/ 5

.035"19mm, ⌀14x1.25HR 5

Two steps colder (3)

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

BPR6ES SOLID

Copper

-

2.9/ 5

.035"19mm, ⌀14x1.25HR 6

BPR6ES

Copper

-

2.9/ 5

.035"19mm, ⌀14x1.25HR 6

BPR6ES BLYB

Copper

-

2.9/ 5

.035"19mm, ⌀14x1.25HR 6