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CHAMPION 353
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CHAMPION 353 Specifications
Center Electrode Diameter (IN)
0.1
Center Electrode Tip Material
Nickel
Electrical Terminal Type
Non-Removable Nut
Ground Electrode Core Material
Nickel
Ground Electrode Material
Nickel Copper Alloy
Ground Electrode Quantity
3
Hex Size (IN)
0.625
Hex Size (MM)
15.880
Hex Type
Hex
Indexed
No
Installed Height (in)
1.99
Insulator Height (in)
0.12
Insulator Projection (IN)
0.12
Manufacturer Heat Range
89
Plug Type
RC89TMC
Pre-Gap Size (IN)
0.020
Pre-Gap Size (MM)
0.5
Reach (IN)
0.75
Resistor Type
Yes
Seat Type
Flat
Taper Diameter (IN)
0.27
Thread Diameter (IN)
0.551
Thread Diameter (MM)
14.000
Washer Included
Yes
Washer Type
Crush
Copper Plus; Pre-Set Gap: 0.020"
Champion Copper Plus spark plugs have been original equipment on a wide variety of engines for many years. These plugs have nickel alloy centers and ground electrodes, with reasonably good wear characteristics. In addition, the extrusion of copper into the center electrode allows for increased conductivity and heat control.
Features & Benefits:
Dependable and durable
Built to ISO and SAE standards for proven performance
Patented SAC-9 semi-conductor resistor for maximum EMI & RFI suppression
Copper core center electrode allows for accurate control of heat range for longer life
TinTac® and ULTRASEAL shell for best corrosion protection of any spark plug in the industry
This spark plug is pre-gapped, but may require minor adjustments with a Spark Plug Gap Tool / Feeler Gauge to match your engine's specifications. For proper engine performance, gaps should be within ±0.004" of OE-Recommended value.