Description:
Autolite Xtreme SportTM spark plugs are designed with an iridium-enhanced fine-wire center electrode to provide better ignitability*, faster fuel combustion, and a more focused ignition. Upgrading to iridium will equip your small engine equipment with greater ignitability and 21% less hydrocarbon emissions than standard plugs, resulting in better fuel efficiency and horsepower.
Features and Benefits:
- Engineered with an iridium-enhanced fine-wire center electrode that delivers greater ignitability over standard non-fine-wire spark plug.
- Its high alumina multi-rib ceramic insulator provides thermal conductivity and superior insulation for increased strength.
- The tapered ground electrode provides improved ignitability for more efficient and smoother starts.
Specifications:
Center Electrode Core Material:
Copper
Center Electrode Design:
Fine Wire
Center Electrode Insulator Tip Projection:
0.133 in.
Center Electrode Insulator Tip Projection:
3.38 mm
Center Electrode Projection:
Mid Projection
Center Electrode Tip Material:
Iridium
Core Nose Length:
0.526 in.
Core Nose Length:
13.36 mm
Electrical Terminal Type:
Non-Removable Nut
Ground Electrode Quantity:
1
Ground Electrode Tip Design:
Taper Cut
Ground Electrode Tip Material:
Platinum
Insulator Height:
2.007 in.
Insulator Height:
50.98 mm
Insulator Material:
Ceramic
Manufacturer Heat Range:
9
Briggs & Stratton #:
491055
Briggs & Stratton #:
491055S
Briggs & Stratton #:
499608
Briggs & Stratton #:
5066A
Briggs & Stratton #:
691043
Briggs & Stratton #:
692051
Briggs & Stratton #:
694385
Briggs & Stratton #:
805015
Champion Spark Plug #:
71
Champion Spark Plug #:
71EZ
Champion Spark Plug #:
RC12WYPB4
Manufacturer Warranty:
84 Months
