Briggs & Stratton Cylinder Head Gasket - 271866S (5 Pack - 4125)

The Briggs & Stratton Cylinder Head Gasket – 271866S (5 Pack – 4125) is a bundle of genuine OEM sealing gaskets designed to seal the cylinder head to the engine block on select Briggs & Stratton petrol engines. Engineered to original equipment standards, these gaskets prevent leaks of combustion gases, oil and engine fluids — supporting optimal engine performance, efficient combustion and long service life across multiple rebuilds or engines.

Key Features

• Genuine OEM Gaskets – Made to Briggs & Stratton original specifications for accurate fit and dependable sealing performance.
• Precision Multi-Layer Design – Engineered to maintain a pressure-resistant seal under varying temperatures and combustion loads.
• Robust Construction – Built from materials designed to withstand heat, vibration and prolonged exposure to combustion by-products, oil and coolant.
• Bundle of 5 Gaskets – Ideal for multiple rebuilds, workshops or service inventories.
• Pack Reference 4125 – Convenient bundle identifier for confident ordering.

Product Details

• Product Type: Engine Cylinder Head Gasket / Seal (5 Pack)
• Part Reference: 271866S
• Pack Reference: 4125
• Compatibility: Selected Briggs & Stratton petrol engines requiring the 271866S head gasket
• Application: Provides combustion-tight sealing between the cylinder head and engine block
• Why Choose These Gaskets: Delivers reliable compression, prevents cross-contamination of fluids, and supports consistent engine performance when used as part of regular maintenance or rebuilds

Compatibility

• Typical Engines / Fitment: Briggs & Stratton vertical crankshaft and various small engine families where the 271866S gasket is the manufacturer-recommended part
• Typical Equipment Applications: Lawn mowers with compatible Briggs & Stratton engines; petrol-powered garden machinery such as tillers, cultivators, pressure washers and similar tools
• Fitment Tip: Cylinder head gasket compatibility depends on the engine’s model, combustion chamber design and cooling configuration — always check your engine’s model/tag or compare to your existing gasket before ordering