Yanmar gasket for 3HM-series exhaust manifold – 121550-13521

Yanmar gasket 121550-13521 is an original exhaust manifold gasket for various Yanmar marine diesel engines. This gasket provides a gas-tight seal between the cylinder head and the exhaust manifold, so that hot exhaust gases are safely discharged through the exhaust system. A worn, damaged or reused gasket can cause exhaust leakage, soot formation, loss of power and unsafe situations in the engine compartment. Replacement during disassembly or maintenance helps keep the exhaust system properly sealed and reliable.

Main features and benefits:

Gasket for exhaust manifold: For sealing between the cylinder head and manifold.
Gas-tight seal: Helps prevent leakage of hot exhaust gases.
For Yanmar HM series: Suitable for 3HM, 3HMF, 3HM35, 3HM35C and 3HM35F, among others.
Important during maintenance: Recommended when disassembling or replacing the exhaust manifold.
Prevents exhaust leakage: Reduces the risk of soot formation, odour and unsafe exhaust gas leakage.
Resistant to high temperatures: Suitable for installation points with heavy thermal load.
For marine and industrial applications: Used on various Yanmar diesel engines.
Original Yanmar part: Ensures correct fit and reliable sealing.