Is RC12YC same as RC14YC?
Hey Jim, The higher number is a slightly hotter spark type plug. The RC14YC4 is now the standard plug for the 990/992 Generac engines. The 999 in the new 16-22kW Evolution (7000 series) units and older 20kW units are still using the cooler RC12YC4 plugs.
Is RC12YC a resistor plug?
The Briggs 491055T is a RC12YC plug which is a resistor plug. The Briggs 694385 is a RC14YC plug which is a resistor plug. The K6RTC appears to be inductive resistor plug. Inductive resistance plugs usually read around 40 ohms but on a 20 kilo ohms scale will look more like zero ohms.
What heat range is RC12YC?
12
RC12YC Spark Plugs
| Center Electrode | Copper Core |
|---|---|
| Heat Range | 12 |
| Hex Size | 5/8″ (16mm) |
| Reach | 19mm (3/4″) |
| Seat | Gasket seat |
What does a champion RC12YC fit?
RC12YC Spark Plugs
| Center Electrode | Copper Core |
|---|---|
| Thread Size | 14mm |
| Tip | Projected Tip |
| Type | Resistor |
| Fits | BRIGGS & STRATTON GAS ENGINES — Intek, Vanguard single cylinder OHV KOHLER GAS ENGINES — Command OHV, K series, 16.0/TH16, 18.0/TH18 |
Which is the hotter spark plug rc14yc or rc12yc4?
The higher number is a slightly hotter spark type plug. The RC14YC4 is now the standard plug for the 990/992 Generac engines. The 999 in the new 16-22kW Evolution (7000 series) units and older 20kW units are still using the cooler RC12YC4 plugs. The ‘4’ at the end is the spark gap that’s preset at the Champion factory.
Can you use rc12yc plugs on a lawn mower?
Also (Resistor Types) explains why you cant use RC12YC in an engine that requires QC12YC plugs. Interesting. It wouldn’t have occurred to me.
How many replacement spark plugs are there for champion rc14yc?
Champion RC14YC – Alternative spark plugs There are 119 replacement spark plugs for Champion RC14YC. The cross references are for general reference only, please check for correct specifications and measurements for your application. Details about Champion RC14YC: Threaddiameter:14mm Threadreach:19mm Seattype:flat Hexsize:16mm