1 years
China
Certification: ISO9001 factory production; CE documents available upon request
Real Product Photos: Cylinder head gasket full view, sealing surface close‑up, Yamaha 40HP outboard mounting reference picture
This robust aftermarket cylinder head gasket serves as a trustworthy drop‑in replacement for Yamaha 40HP outboard motors. It works as a cross‑match for OEM part numbers 6F5‑11181‑A0, 6F5‑11181‑A1, 6F5‑11181‑A2, 6F5‑11181‑00 and 6F5‑11181‑01.
It is built from multi‑layer composite sealing material that holds up well against high temperatures. This head gasket features solid pressure tolerance, good heat stability and superior anti‑corrosion properties.
It can handle intense combustion pressure, repeated temperature shifts and damp, salt‑laden marine environments, so it keeps consistent sealing capability over time.
Fitted between the cylinder head and engine block, this gasket forms a tight seal for combustion chambers and cooling water passages. Thanks to its secure sealing effect, it stops compression loss, cooling‑water seepage, gas blow‑by and cross‑mixing between coolant and combustion gas.
In turn, it maintains steady cylinder compression to support smooth engine running.
This gasket is produced to meet rigid OEM specifications, so it perfectly matches the original contour, port layout and thickness. It fixes frequent top‑end issues. These include gasket blow‑out, water intrusion inside cylinders, compression drop, engine over‑heating and power reduction, all of which stem from worn, burnt or broken original‑equipment head gaskets.
Every key dimension meets OEM standards for straightforward direct installation. Make sure you remove all leftover gasket residue prior to fitting. Follow the proper torque sequence in gradual steps, because uneven bolt tension will bring about early gasket failure.
Replace your cracked or leaky stock cylinder head gasket with this aftermarket unit. It will bring back reliable cylinder‑head sealing performance for your Yamaha outboard motor. Keep up with routine marine maintenance work. These simple measures cut down compression‑failure hazards and help maintain solid motor performance while out on the water.
For Yamaha Outboard part number: 6F5-11181-A0-00, 6F5-11181-A1/A2, 6F5-11181-00/01
For Yamaha Outboard Enduro 40HP 2-stroke engines
Cylinder Head Gasket