The Briggs & Stratton 491055S is a conventional spark plug with nickel alloy electrodes. This spark plug is manufactured under Briggs & Stratton brend as a replacement part for small gasoline engines. This spark plug replaces old Briggs models: 491055, 805015, 72347GS, 72347.
The Briggs & Stratton 491055S spark plug has corrugated ribs, gasket seal type, a nickel alloy center and ground electrodes, a 16.0 mm (5/8 inches) hex size, and 0.9 mm (0.035 inches) spark plug gap.
General informational
| Specifications | |
| Spark plug model | Briggs & Stratton 491055S |
| Thread size | 14.0 mm (0.55 in) |
| Thread pitch | 1.25 mm (0.050 in) |
| Reach | 19.0 mm (0.75 in) |
| HEX size | 16.0 mm (0.629 in) |
| Seat type | Gasket |
| Resistor | Yes |
| Heat range | 12 |
| Torque specs | Cast Iron: 35-40 Nm (3.6-4.0 kg·m; 25.8-29.5 ft·lb) Aluminum: 25-29 Nm (2.5-3.0 kg·m; 18.4-21.6 ft·lb) |
| Gap | 0.9 mm (0.035 in) |
| Longevity | 32,000 km (20,000 miles) |
| Center electrode | |
| Material | Nickel |
| Type | Standard |
| Size | 2.5 mm (0.098 in) |
| Projection | Projected |
| Ground electrode | |
| Material | Nickel |
| Type | Standard |
| Quantity | 1 |
| Tip design | J Gap |
| Skirt | No |
Equivalents and alternatives
| Briggs & Stratton 491055S cross reference to | |
| Brisk | |
| DR17YC | |
| Champion | |
| 71, 71G, OE013, OE013T10, RC12YC, RC12YCT06, RC12YCW24 | |
| NGK | |
| 6130, BCPR5ES, stk 6130 | |
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