A-B1843805-AI PISTON ASSEMBLY
A-B1843805-AI PISTON ASSEMBLY
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One New Aftermarket Replacement Piston Assembly Fits Briggs & Fits Stratton Vanguard V-Twin Engines
This standard-bore piston assembly is a direct replacement for the Fits Briggs & Fits Stratton (B&S) Vanguard 38 cubic inch V-Twin engine series. Featuring a 75.5mm bore diameter, it restores proper compression and smooth engine operation in Vanguard-powered outdoor power equipment including zero-turn mowers, riding mowers, and commercial turf equipment. Note: V-Twin engines require two piston assemblies -- one per cylinder.
Specifications
- Bore Diameter: 75.5mm (Standard)
- Engine Displacement: 38 cubic inches
- Configuration: V-Twin, Overhead Valve (OHV)
- Power Range: 20 HP, 23 HP, 25 HP, 28 HP, 30 HP
Compatible Models
Fits Briggs & Fits Stratton Vanguard 38 Cu. In. V-Twin Engine Series: 384445, 384447, 385442, 385445, 385447, 385777, 386442, 386447, 386777, 389445, 389447, 389575, 38E347
Verify your engine model, type, and code numbers before ordering to confirm fitment.
Replaces Part Number(s):
843805, A-B1843805-AI
New aftermarket replacement part - not remanufactured, not used.



