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In the early 1900s, small planes flew with single ignition systems powered by adapted automobile engines using Champion-brand automotive spark plugs. By the 1920s, the company had developed innovative spark plugs designed specifically for the aviation industry.
Champion Aerospace designs and manufactures Champion-brand piston-engine ignition components for both OEM and aftermarket for general aviation aircraft applications. Every spark plug manufactured has built-in design advantages that assure longer life and greater reliability.
A typical spark plug number with symbol explanation1. Resistor None -- No Resistor R -- Mil-Spec. Resistor-Erosion protection 2. Barrel Style None -- Unshielded E -- Shielded 5/8"-24 Thread H -- Shielded 3/4"-20 Thread (All Weather Plug) 3. Mounting Thread -- Reach -- Hex Size B -- 18mm 13/16" / 2.06cm 7/8" / 2.22cm M -- 18mm 1/2"/1.27cm 7/8"/2.22cm L -- 14mm 1/2"/1.27cm 13/16/2.06cm U -- 18mm 1-1/8"/2.85cm 13/16/2.06cm J -- 14mm 3/8"/0.95cm 13/16/2.06cm 4. Heat Rating Position Low number-- cold High number--hot 5. Electrode Design None -- Conventional single E -- Two prong massive W -- Fine wire (Iridium) N -- 4 prong massive P -- Fine wire (Platinum) B -- 2 prong massive, Tangent to Center NOTE:
Spark plugs are shipped in factory sealed plastic cases. Opened spark plug cases make the spark plugs non-returnable. Please do not open any spark plug until you are sure you have received the correct spark plugs for your application.
| In the early 1900s, small planes flew with single ignition systems powered by adapted automobile engines using Champion-brand automotive spark plugs. By the 1920s, the company had developed innovative spark plugs designed specifically for the aviation industry. Champion Aerospace designs and manufactures Champion-brand piston-engine ignition components for both OEM and aftermarket for general aviation aircraft applications. Every spark plug manufactured has built-in design advantages that assure longer life and greater reliability. |
A typical spark plug number with symbol explanation
| 1. Resistor | None -- No Resistor | R -- Mil-Spec. Resistor-Erosion protection |
|---|---|---|
| 2. Barrel Style | None -- Unshielded | E -- Shielded 5/8"-24 Thread |
| H -- Shielded 3/4"-20 Thread (All Weather Plug) | ||
| 3. Mounting Thread -- Reach -- Hex Size | B -- 18mm 13/16" / 2.06cm 7/8" / 2.22cm | M -- 18mm 1/2"/1.27cm 7/8"/2.22cm |
| L -- 14mm 1/2"/1.27cm 13/16/2.06cm | U -- 18mm 1-1/8"/2.85cm 13/16/2.06cm | |
| J -- 14mm 3/8"/0.95cm 13/16/2.06cm | ||
| 4. Heat Rating Position | Low number-- cold | High number--hot |
| 5. Electrode Design | None -- Conventional single | E -- Two prong massive |
| W -- Fine wire (Iridium) | N -- 4 prong massive | |
| P -- Fine wire (Platinum) | B -- 2 prong massive, Tangent to Center |
NOTE:
Spark plugs are shipped in factory sealed plastic cases. Opened spark plug cases make the spark plugs non-returnable. Please do not open any spark plug until you are sure you have received the correct spark plugs for your application.
