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What are the Different Champion Resistor Types?

"R" Type: Most resistor spark plugs feature a standard "R" type resistor.  Most Champion "R" type resistor plugs are Champion SAC-9 suppressors.  These extremely reliable resistors are formed from strontium carbonate, aluminum oxide and copper oxide powders.  The resistance of a plug with SAC-9 suppressors are capable of combating typical RFI, but cannot be accurately measured with typical low voltage ohmmeters. 

"Q" Type: Uses a wire wound inductive coil (or electromagnetic suppression) to reduce RFI without negatively affecting ignition performance.

"X" Type: Have a special resistor to meet more stringent RFI requirements.

 

To avoid a reduction in performance, resistor types should not be used interchangeably.  Use of a non-OE resistor type could result in engine damage and end plug life.

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