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NGK TR6 4177 Spark Plug

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NGK TR6 4177 image
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Rating
3.1 / 5
Overall
NGK TR6
Brand Code
3.0 / 5
Materials
Copper Copper
Ground electrode Center electrode
3.3 / 5
Design
Standard V-Cut
Ground type Center type
Specifications
1mm (.039") 6
Gap Heat range
⌀14mm 1.25mm
Thread diameter Thread pitch
18mm (.709") 16mm (5/8")
Reach Hex size
Tapered 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 (7)

Alternative spark plugs found in cross-reference docs provided by manufacturers
Copper-Iridium
4.3 / 5
.043" 17.5mm, ⌀14x1.25 HR 20
Iridium-Platinum
4.2 / 5
.043" 17.5mm, ⌀14x1.25 HR 20
Copper
3.3 / 5
.043" 17.5mm, ⌀14x1.25 HR 20
Copper
3.3 / 5
.033" 17.5mm, ⌀14x1.25 HR 1
Copper-Silver
3.3 / 5
.024" 17.5mm, ⌀14x1.25 HR 6
Copper
3.3 / 5
.031" 18mm, ⌀14x1.25 HR 20
Copper
2.9 / 5
.050" 17.5mm, ⌀14x1.25 HR 1

Deep reference (86)

A second level of cross-reference: if A=B and B=C, then A=C
Copper-Iridium
4.3 / 5
.043" 17.5mm, ⌀14x1.25 HR 20
Copper-Iridium
4.3 / 5
.043" 17.5mm, ⌀14x1.25 HR 20
Iridium-Platinum
4.2 / 5
.050" 17.5mm, ⌀14x1.25 HR 2
Iridium-Platinum
4.2 / 5
.059" 17.5mm, ⌀14x1.25 HR 3
Iridium-Platinum
4.2 / 5
.043" 17.5mm, ⌀14x1.25 HR 20
Iridium-Platinum
4.2 / 5
.050" 17.5mm, ⌀14x1.25 HR 1
Iridium-Platinum
4.2 / 5
.035" 19mm, ⌀14x1.25 HR 4
Iridium-Platinum
4.2 / 5
.043" 17.5mm, ⌀14x1.25 HR 20
Copper-Iridium
3.8 / 5
.039" 18mm, ⌀14x1.25 HR 5
Copper-Iridium
3.8 / 5
.039" 18mm, ⌀14x1.25 HR 6
Copper-Iridium
3.8 / 5
.039" 18mm, ⌀14x1.25 HR 5
Copper-Iridium
3.8 / 5
.039" 18mm, ⌀14x1.25 HR 6
Copper-Iridium
3.8 / 5
.039" 18mm, ⌀14x1.25 HR 4
Copper-Platinum
3.5 / 5
.059" 18mm, ⌀14x1.25 HR 5
Copper-Platinum
3.5 / 5
.059" 18mm, ⌀14x1.25 HR 5
Copper-Platinum
3.5 / 5
.039" 18mm, ⌀14x1.25 HR 6
Platinum
3.5 / 5
.055" 18mm, ⌀14x1.25 HR 2
Copper-Platinum
3.5 / 5
.059" 18mm, ⌀14x1.25 HR 5
Copper-Platinum
3.5 / 5
.059" 18mm, ⌀14x1.25 HR 5
Copper-Platinum
3.5 / 5
.039" 18mm, ⌀14x1.25 HR 6
Platinum
3.5 / 5
.055" 18mm, ⌀14x1.25 HR 2
Copper-Silver
3.3 / 5
.024" 17.5mm, ⌀14x1.25 HR 6
Copper
3.3 / 5
.026" 17.5mm, ⌀14x1.25 HR 9
Copper-Silver
3.3 / 5
.024" 17.5mm, ⌀14x1.25 HR 6
Copper
3.3 / 5
.026" 17.5mm, ⌀14x1.25 HR 9
Copper
3.3 / 5
.026" 17.5mm, ⌀14x1.25 HR 9
Copper
3.3 / 5
.031" 18mm, ⌀14x1.25 HR 20
Copper-Silver
3.3 / 5
.024" 17.5mm, ⌀14x1.25 HR 6
Copper
3.3 / 5
.026" 17.5mm, ⌀14x1.25 HR 9
Copper
3.3 / 5
.031" 18mm, ⌀14x1.25 HR 22
Copper
3.3 / 5
.031" 18mm, ⌀14x1.25 HR 20
Copper-Platinum
3.2 / 5
.055" 18mm, ⌀14x1.25 HR 1
Copper
3.2 / 5
.063" 17.5mm, ⌀14x1.25 HR 7
Copper
3.2 / 5
.063" 17.5mm, ⌀14x1.25 HR 7
Copper-Platinum
3.2 / 5
.055" 18mm, ⌀14x1.25 HR 1
Copper
3.2 / 5
.063" 17.5mm, ⌀14x1.25 HR 7
Copper
-
3.1 / 5
.039" 18mm, ⌀14x1.25 HR 5
Copper
-
3.1 / 5
.039" 18mm, ⌀14x1.25 HR 5
Copper
-
3.1 / 5
.039" 18mm, ⌀14x1.25 HR 5
Copper
-
3.1 / 5
.028" 18mm, ⌀14x1.25 HR 7
Copper
2.9 / 5
.031" 18mm, ⌀14x1.25 HR 6
Copper
2.9 / 5
.026" 18mm, ⌀14x1.25 HR 6
Copper
2.9 / 5
.031" 18mm, ⌀14x1.25 HR 6
Copper
2.9 / 5
.050" 17.5mm, ⌀14x1.25 HR 1
Copper
2.9 / 5
.050" 17.5mm, ⌀14x1.25 HR 2
Copper
2.9 / 5
.045" 18mm, ⌀14x1.25 HR 2
Copper
2.9 / 5
.055" 18mm, ⌀14x1.25 HR 1
Copper
2.9 / 5
.055" 18mm, ⌀14x1.25 HR 2
Copper
2.9 / 5
.045" 17.5mm, ⌀14x1.25 HR 2
Copper
2.9 / 5
.035" 19mm, ⌀14x1.25 HR 4
Copper
2.9 / 5
.043" 21mm, ⌀14x1.25 HR 10
Copper
2.9 / 5
.035" 17.5mm, ⌀14x1.25 HR 9
Copper
2.9 / 5
.031" 18mm, ⌀14x1.25 HR 6
Copper
2.9 / 5
.026" 18mm, ⌀14x1.25 HR 6
Copper
2.9 / 5
.031" 18mm, ⌀14x1.25 HR 6
Copper
2.9 / 5
.050" 17.5mm, ⌀14x1.25 HR 1
Copper
2.9 / 5
.050" 17.5mm, ⌀14x1.25 HR 2
Copper
2.9 / 5
.045" 18mm, ⌀14x1.25 HR 2
Copper
2.9 / 5
.055" 18mm, ⌀14x1.25 HR 1
Copper
2.9 / 5
.055" 18mm, ⌀14x1.25 HR 2
Copper
2.9 / 5
.045" 17.5mm, ⌀14x1.25 HR 2
Copper
2.9 / 5
.035" 19mm, ⌀14x1.25 HR 4
Copper
2.9 / 5
.043" 21mm, ⌀14x1.25 HR 10
Copper
2.9 / 5
.035" 17.5mm, ⌀14x1.25 HR 9
Copper
2.9 / 5
.045" 18mm, ⌀14x1.25 HR 2
Copper
2.9 / 5
.043" 21mm, ⌀14x1.25 HR 10
Copper
2.9 / 5
.045" 18mm, ⌀14x1.25 HR 3
Copper
2.9 / 5
.035" 17.5mm, ⌀14x1.25 HR 9
Copper
2.9 / 5
.031" 18mm, ⌀14x1.25 HR 6
Copper
2.9 / 5
.031" 18mm, ⌀14x1.25 HR 6
Copper
2.9 / 5
.031" 18mm, ⌀14x1.25 HR 6
Copper
2.9 / 5
.031" 18mm, ⌀14x1.25 HR 6
Copper
2.9 / 5
.050" 17.5mm, ⌀14x1.25 HR 1
Copper
2.9 / 5
.050" 17.5mm, ⌀14x1.25 HR 2
Copper
2.9 / 5
.055" 18mm, ⌀14x1.25 HR 1
Copper
2.9 / 5
.055" 18mm, ⌀14x1.25 HR 2
Copper
2.9 / 5
.045" 17.5mm, ⌀14x1.25 HR 2
Copper
2.9 / 5
.035" 19mm, ⌀14x1.25 HR 4
Copper
2.9 / 5
.043" 21mm, ⌀14x1.25 HR 10
Copper
2.9 / 5
.035" 17.5mm, ⌀14x1.25 HR 9
Copper
2.9 / 5
.031" 17.5mm, ⌀14x1.25 HR 7
Copper
2.9 / 5
.035" 17.5mm, ⌀14x1.25 HR 9
Copper
2.9 / 5
.031" 18mm, ⌀14x1.25 HR 7
Copper
2.9 / 5
.028" 18mm, ⌀14x1.25 HR 7
Copper
2.9 / 5
.026" 18mm, ⌀14x1.25 HR 6
Copper
2.9 / 5
.031" 18mm, ⌀14x1.25 HR 6

Same specs (2)

Products that have identical characteristics that impact interchangability
Copper-Iridium
3.8 / 5
.039" 18mm, ⌀14x1.25 HR 6
Copper-Platinum
3.5 / 5
.039" 18mm, ⌀14x1.25 HR 6

Bigger gap (2)

0.1..0.3 mm gap increase for better performance given your ignition system can handle it
Platinum
3.8 / 5
.050" 18mm, ⌀14x1.25 HR 6
Platinum
3.8 / 5
.050" 18mm, ⌀14x1.25 HR 6

One step colder (1)

Colder spark plugs with same characteristics for moderately tuned engines (75–100 hp increase)
Copper-Iridium
3.8 / 5
.039" 18mm, ⌀14x1.25 HR 7

Two steps colder (1)

Two steps colder spark plugs with same characteristics for heavily modified engines (150-200 hp increase)
Copper-Iridium
3.8 / 5
.039" 18mm, ⌀14x1.25 HR 8