Briggs & Stratton Crankcase Gaskets
Prevent oil leaks with our range of crankcase gaskets for Briggs & Stratton engines. We stock engine crankcase gasket assemblies including sump gaskets, oil pan gaskets, and complete gasket kits with mounting bolts for small engine crankcase gasket applications. Our inventory features paper, composite, and metal gaskets in various thicknesses suitable for vertical and horizontal lawn mower engine crankcase gasket configurations. Whether you need individual Briggs & Stratton crankcase gasket components or complete kits with torque specifications, we hold genuine manufacturer Briggs & Stratton engine crankcase gasket parts in stock and sell worldwide for reliable oil-tight sealing.
Available Briggs & Stratton Crankcase Gaskets
Crankcase Gasket
846487
Briggs & Stratton
£30.10
In Stock
Engine Gasket Set
299577
Briggs & Stratton
£38.50
In Stock
Gasket Intake
272554S
Briggs & Stratton
£3.55
In Stock
Gasket Intake
270345S
Briggs & Stratton
£4.30
In Stock
Gasket Set Valve
796189
Briggs & Stratton
£58.80
In Stock
Gasket Intake
272199S
Briggs & Stratton
£4.05
In Stock
Gasket Air Cleaner
692087
Briggs & Stratton
£7.35
In Stock
Gasket Air Cleaner
272296
Briggs & Stratton
£3.45
In Stock
Gasket Float Bowl
694920
Briggs & Stratton
£8.50
In Stock
Gasket Crankcase
272124
Briggs & Stratton
£11.40
In Stock
Gasket Set
495992
Briggs & Stratton
£48.90
In Stock
Gasket Fuel Tank
272409S
Briggs & Stratton
£3.35
In Stock
Frequently Asked Questions
How do I know if my crankcase gasket is leaking oil?
Oil dripping from the bottom of the engine or pooling underneath the mower indicates a failed crankcase gasket. You'll notice oil consumption increasing—needing frequent top-ups between mowings. Oil may appear around the seam where the sump (oil pan) meets the engine block, often running down the sides. The leak typically worsens when the engine is hot and oil becomes thinner. Clean the area thoroughly, run the mower briefly, then check again—fresh oil reappearing confirms the gasket leak. Don't confuse this with crankshaft seal leaks, which appear around the shaft itself.
Is replacing a crankcase gasket difficult for a home mechanic?
It's moderately challenging but achievable with basic tools and mechanical aptitude. You'll need to remove the engine from the mower and flip it upside down to access the sump bolts. The trickiest parts are removing all old gasket material without damaging mating surfaces and carefully reinstalling the sump without damaging the crankshaft oil seal. Budget 3-5 hours for the complete job. You'll need socket sets, a torque wrench, gasket scraper, and degreaser. Follow torque specifications precisely—typically 200-300 inch-pounds in a criss-cross pattern—to prevent warping or future leaks.
Can I use sealant with crankcase gaskets or fit them dry?
Modern crankcase gaskets typically install dry without sealant when mating surfaces are perfectly clean and flat. Some mechanics use a thin film of gasket sealer to hold the gasket in position during assembly, preventing it from shifting. If surfaces are slightly warped or damaged, a light coating of RTV silicone designed for oil resistance may help, but proper surface preparation is better. Never use thick layers of sealant—excess can squeeze into the crankcase and block oil passages. Always follow manufacturer recommendations for your specific engine model.
Why does oil still leak after I've replaced the crankcase gasket?
Several issues cause persistent leaks despite new gaskets. Improper bolt torque is most common—over-tightening warps the sump whilst under-tightening leaves gaps. Ensure you torque bolts in the correct criss-cross sequence, not going around in a circle. Bits of old gasket left on mating surfaces prevent proper sealing. A warped sump or engine block from previous over-tightening won't seal flat even with new gaskets. Damaged crankshaft seals often leak simultaneously. Excessive crankcase pressure from a blown head gasket can force oil past even perfect gaskets.
Do crankcase gaskets come with new mounting bolts?
Complete crankcase gasket kits typically include new mounting bolts because old bolts stretch over time and won't achieve proper torque. The bolts are specifically engineered for the correct clamping force—reusing stretched bolts causes uneven pressure and leaks. If purchasing a gasket alone without bolts, inspect existing bolts carefully for corrosion, stripped threads, or elongation. Many manufacturers recommend replacing bolts whenever splitting the crankcase. The small additional cost of a complete kit with fresh bolts prevents having to repeat the entire job when old bolts fail.