The Briggs & Stratton 391086S crankshaft seal is an essential genuine spare part for proper sealing and protection of the engine. It is compatible with Briggs & Stratton engines in the series 21R6, 21R8, 31R7, 31R8, 31R9, and 40N8, ensuring an excellent fit.

The use of a crankshaft seal helps prevent oil leaks and protects mechanical parts from wear. Manufactured according to high-quality standards, it offers resistance to heat and wear.

• Genuine Briggs & Stratton spare part
• Compatibility with models: 1924, 1964, 1974, 19G4, 19H2, 19L2, 2013, 2014, 2023, 2024, 2034, 2064, 20A1, 20A4, 20B4, 20C1, 20C4, 20D4, 20E1, 20E2, 20E3, 20E4, 20F4, 20G4, 20H1, 20L1, 20L2, 20M1, 20M2, 20M3, 2434, 2504, 2564, 2574, 4224, 1947, 1957, 1967, 2107, 2108, 2127, 2128, 2129, 2147, 2149, 2157, 2158, 2178, 2199, 21B7, 21B8, 21B9, 21R5, 21R6, 21R7, 21R8, 280H, 280J, 281H, 282H, 2837, 283H, 2847, 284H, 285H, 2867, 286H, 2877, 28AH, 28BH, 28CH, 28N7, 28P7, 28Q7, 28S7, 3117, 33M9, 33R7, 4015, 4025, 4036, 4045, 4055, 4057, 4065, 4066, 4067, 4075, 4076, 4077, 40F7, 40N8, 40N7, 40R5, 40R6, 40R7, 40R8, 40S7, 40S8, 40U7, 40U8, 4415, 4416, 4455, 4456, 4458, 44J6, 44L7, 44M7, 44N6, 44N7, 44N8, 44P7, 44R6, 44S6, 44S7, 44S8, 44S9, 44U5, 44U6, 44U7, 44U8, 4607, 4617, 4627, 4637, 49M7, 49M8, 49S7, 49S8
• Old codes: 298423, 391086, 391086S, 690926, 31950