Features:
- Compatible with all overhead valve engines
- Better engine performance
- Resistance to carbon build-up and pre-ignition
- Better emissions
- Fewer exhaust fumes
- NGK’s patented triple-gasket sealing process eliminates combustion leakage
- Faster starting
- Smoother running
- Old Part Numbers: 491055E and 594056
Briggs & Stratton 992304 is an alternate replacement spark plug for these:
- Brisk 1326
- Brisk DR17YC
- NGK 6130
- NGK BCPR5ES
- NGK stk 6130
- Champion RC12YC
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