What do the letters and numbers mean on Champion spark plugs?
The combination of letters and numbers assigned for every Champion spark plug is a logical formula which indicates the major features of its design. [15] Heat Range – The middle number indicates the heat range of the spark plug, the higher the number the hotter the heat range.
What does the H mean on a spark plug?
“H” indicates a 1/2″ reach, while “E” indicates a 3/4″ reach. The letter “A” indicates some type of special feature. The letter “B” or “C” in this location indicates a spark plug designed for racing applications. The letter “G” indicates a fine wire nickel alloy center electrode.
What does a champion rc12yc spark plug 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 |
What spark plug numbers mean?
The heat rating is a measure of the amount of heat dissipation. The heat range of a spark plug is the range in which the plug works well thermally. The heat rating of each NGK spark plug is indicated by a number; lower numbers indicate a hotter type, higher numbers indicate a colder type.
How do you read a Champion spark plug heat range?
Champion indicates the heat range in the middle of the plug number. For example, RV15YC6 has a heat range of 15. (The 6 at the end of this part indicates the gap setting.) Champion plugs are hotter the higher the number, colder the lower the number.
What does the Q stand for in Champion spark plugs?
“Q” Type: Uses a wire wound inductive coil (or electromagnetic suppression) to reduce RFI without negatively affecting ignition performance. “Q” type suppressor plugs are specified for most Evinrude and Johnson outboard engines with CDI. “X” Type: Have a special resistor to meet more stringent RFI requirements.
What is the Autolite equivalent to Champion RC12YC?
SPARK PLUG INTERCHANGE CHARGE
| AC | Autolite | Champion Plug |
|---|---|---|
| – | 458, 404 | J19LM |
| CS41 | 2995 | CJ8 |
| FR2LSK | 5224 | RC12YC |
| CS45T | 2956 | DJ8J |