Champion L77JC4 Spark Plug

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Rating
Brand	Code
3.3 / 5 Overall
Champion	L77JC4
3.0 / 5 Materials
Copper	Copper
Ground electrode	Center electrode
3.8 / 5 Design
Cut Back	Standard
Ground type	Center type

Specifications
Gap	Heat range
1mm (.039")	77
⌀14mm	1.25mm
Thread diameter	Thread pitch
12.7mm (1/2")	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 (4)

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

IWF27

Copper-Iridium

4.3/ 5

.031"12.7mm, ⌀14x1.25HR 27

W27FS-U10

Copper

3.3/ 5

.039"12.7mm, ⌀14x1.25HR 27

2634

Copper

2.9/ 5

.039"12.7mm, ⌀14x1.25HR 1

B7HS-10

Copper

2.9/ 5

.039"12.7mm, ⌀14x1.25HR 7

Deep reference (24)

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

IWF27

Copper-Iridium

4.3/ 5

.031"12.7mm, ⌀14x1.25HR 27

XS4092

Iridium-Platinum

4.2/ 5

.031"12.7mm, ⌀14x1.25HR 2

XS4092

Iridium-Platinum

4.2/ 5

.031"12.7mm, ⌀14x1.25HR 2

XS4093

Iridium-Platinum

4.2/ 5

.031"12.7mm, ⌀14x1.25HR 4

BR9HIX

Copper-Iridium

3.8/ 5

.031"12.7mm, ⌀14x1.25HR 9

R5530-9

Gold-Palladium-Platinum

3.8/ 5

.026"12.7mm, ⌀14x1.25HR 9

L77JC4 MARINE

Copper

3.3/ 5

.039"12.7mm, ⌀14x1.25HR 77

W27FS-U10

Copper

3.3/ 5

.039"12.7mm, ⌀14x1.25HR 27

821-1

Copper

3.3/ 5

.039"12.7mm, ⌀14x1.25HR 77

L77JC4 MARINE

Copper

3.3/ 5

.039"12.7mm, ⌀14x1.25HR 77

R5525-9

Copper

3.2/ 5

.026"12.7mm, ⌀14x1.25HR 9

5828

Copper

3.2/ 5

.039"12.7mm, ⌀14x1.25HR 77

B9HS

Copper

2.9/ 5

.028"12.7mm, ⌀14x1.25HR 9

BR9HS

Copper

2.9/ 5

.028"12.7mm, ⌀14x1.25HR 9

2634

Copper

2.9/ 5

.039"12.7mm, ⌀14x1.25HR 1

QL77JC4

Copper

2.9/ 5

.039"12.7mm, ⌀14x1.25HR 77

411

Copper

2.9/ 5

.024"12.7mm, ⌀14x1.25HR 1

2634

Copper

2.9/ 5

.039"12.7mm, ⌀14x1.25HR 1

4092

Copper

2.9/ 5

.031"12.7mm, ⌀14x1.25HR 2

B9HS-10

Copper

2.9/ 5

.039"12.7mm, ⌀14x1.25HR 9

5883

Copper

2.9/ 5

.030"12.7mm, ⌀14x1.25HR 78

W31FS

Copper

2.9/ 5

.028"12.7mm, ⌀14x1.25HR 31

B9HS-10

Copper

2.9/ 5

.039"12.7mm, ⌀14x1.25HR 9

4093

Copper

2.9/ 5

.031"12.7mm, ⌀14x1.25HR 4

Same specs (2)

Products that have identical characteristics that impact interchangability

L77JC4 MARINE

Copper

3.3/ 5

.039"12.7mm, ⌀14x1.25HR 77

821-1

Copper

3.3/ 5

.039"12.7mm, ⌀14x1.25HR 77