Engine Overhaul Kit Compatible with Briggs & Stratton 30 Cubic Inch Standard Vanguard Engines includes Gaskets, 68 mm Pistons #843951, silver

This engine rebuild kit is designed for engines equipped with 68mm standard pistons built before code date 07122400. The kit provides all critical components needed to properly rebuild or refresh your engine, helping restore compression, performance, and reliability. The set includes two standard-size pistons with rings, a complete gasket set with seals, spark plugs, oil and fuel filters, and professional-grade engine assembly lube. Each component is selected to meet or exceed OEM replacement requirements for compatible Vanguard twin-cylinder engines. ⚠ IMPORTANT FITMENT NOTICE: The company used multiple piston sizes and ring thicknesses across Vanguard engine production. Always verify your Model, Type, and Code number before ordering to ensure correct fitment. This kit is intended only for engines built before date code 07122400 using 68mm standard pistons. The included assembly lube is specifically formulated for engine building and break-in. Its semi-synthetic formula contains zinc, moly, and high-pressure additives that help prevent dry starts, galling, scuffing, and premature wear during initial startup. Ideal for lawn equipment, generators, commercial mowers, and other Vanguard-powered applications, this kit is a dependable solution for mechanics, technicians, and serious DIY rebuilds.

• COMPLETE VANGUARD ENGINE SERVICE KIT – Includes (2) 68mm standard pistons with ring sets, full gasket set with seals, (2) NGK spark plugs, (2) oil filters, fuel filter, and 4oz engine assembly lube for a proper rebuild or tune-up.
• FITS MULTIPLE VANGUARD MODELS – Compatible with models 290442, 290446, 290447, 290772, 290777, 294440, 294442, 294446, 294447, 294772, 294775, 294776, 294777, 303707, 303772, 303775, 303776, 303777, 304447, 309440, 309447 built before date code 07122400.
• VERIFY BEFORE ORDERING – IMPORTANT – Company used different piston sizes and ring thicknesses on Vanguard engines. Always confirm your Model, Type, and Code number to ensure correct fitment.
• REPLACES OEM PART NUMBERS – Pistons with Rings : 843951(Standard, 68mm – before 07122400) Gasket Set: 841188, 808390, 847319, 842722, 808704 Oil Filter: 492932S Fuel Filter: 493629S Spark Plugs: NGK (replaces RC12YC)
• ENGINE ASSEMBLY LUBE INCLUDED – Professional-grade semi-synthetic assembly lube with zinc, moly, and high-pressure additives to protect bearings, cams, lifters, and valve train during break-in. Prevents dry starts, galling, scuffing, and seizing.