Champion RS12WYPB4 9204 Spark Plug

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Rating

4.2 / 5 Overall
Champion	RS12WYPB4
Brand	Code
4.5 / 5 Materials
Platinum	Iridium
Ground electrode	Center electrode
3.5 / 5 Design
Standard	Fine Wire
Ground type	Center type

Specifications

1mm (.039")	12
Gap	Heat range
⌀14mm	1.25mm
Thread diameter	Thread pitch
17.5mm (.689")	16mm (5/8")
Reach	Hex size
Tapered	Removable Nut
Seat	Terminal
1	Non-Projected
Ground count	Projection

Cross-reference and alternatives

Cross-reference (1)

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

XP104

Iridium-Platinum

-

4.2/ 5

.050"17.5mm, ⌀14x1.25HR 2

Deep reference (5)

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

IT20

Copper-Iridium

4.3/ 5

.043"17.5mm, ⌀14x1.25HR 20

RS14WMPB4

Iridium-Platinum

-

4.2/ 5

.039"17.5mm, ⌀14x1.25HR 14

ITR5F-13

Iridium-Platinum

-

4.2/ 5

.050"17.5mm, ⌀14x1.25HR 5

ITR6F-13

Iridium-Platinum

-

4.2/ 5

.050"17.5mm, ⌀14x1.25HR 6

HGR9DQP

Copper-Platinum

3.5/ 5

.063"17.5mm, ⌀14x1.25HR 9

Same specs (3)

Products that have identical characteristics that impact interchangability

9204S

Iridium-Platinum

-

4.2/ 5

.039"17.5mm, ⌀14x1.25HR 12

401CC

Copper

2.9/ 5

.039"17.5mm, ⌀14x1.25HR 12

401C2

Copper

2.9/ 5

.039"17.5mm, ⌀14x1.25HR 12

Bigger gap (4)

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

RS12PYPB5

Platinum

3.8/ 5

.049"17.5mm, ⌀14x1.25HR 12

RS12PYP

Platinum

3.7/ 5

.049"17.5mm, ⌀14x1.25HR 12

HR8DPX

Copper-Platinum

3.3/ 5

.043"17.5mm, ⌀14x1.25HR 8

HR8DCX

Copper

2.9/ 5

.043"17.5mm, ⌀14x1.25HR 8

One step colder (3)

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

RS9PYP4

Platinum

3.7/ 5

.039"17.5mm, ⌀14x1.25HR 9

RS10ZPYCB4

Copper-Platinum

3.5/ 5

.039"17.5mm, ⌀14x1.25HR 10

RS10PYC4

Copper-Platinum

3.3/ 5

.039"17.5mm, ⌀14x1.25HR 10

Two steps colder (1)

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

RS7PYCB

Copper-Platinum

3.5/ 5

.039"17.5mm, ⌀14x1.25HR 7