Description
Technical Overview & Product Details
In the high-temperature environment of the exhaust system, the cylinder outlet gasket is responsible for preventing the leakage of high-pressure, high-temperature exhaust gases into the engine room. Any failure of this seal leads to a loss of exhaust energy—reducing turbocharger efficiency—and creates a dangerous, noisy exhaust leak that can damage surrounding components.
The 146673-11602 is engineered to accommodate the thermal expansion of the cylinder head and the exhaust manifold flange, maintaining a gas-tight seal even under the severe vibration and heat cycles inherent in medium-speed marine diesel engines.
- Compatible Engine Type: Yanmar 6N18 (A)L-V series marine propulsion and auxiliary engines.
- Part Number / Designation: 146673-11602.
- Component Type: Exhaust Outlet Gasket (Cylinder head to manifold connection).
- Material: Multi-layer reinforced metal/graphite composite (designed for high-pressure exhaust sealing).
- Application: Between the cylinder head exhaust outlet and the exhaust manifold/pipe flange.
Key Features & Performance
- Thermal Shock Resistance: Constructed from advanced composite materials that do not become brittle or lose their sealing force despite extreme exhaust gas temperatures.
- High-Pressure Integrity: Designed to withstand the high-velocity, pulsating exhaust pressures typical of multi-cylinder diesel operation, preventing “blow-by” and erosion of the flange face.
- Thermal Expansion Compliance: The gasket architecture allows for the differential thermal expansion between the cylinder head and the exhaust manifold, preventing stress cracks in the mounting bolts.
- Corrosion Resistance: The material is specifically chosen to resist the corrosive acidic byproducts found in combustion gases, especially when operating on high-sulfur Heavy Fuel Oil (HFO).
Why Source from Heybeli Marine?
Exhaust system leaks are not only inefficient but also pose serious safety risks. Heybeli Marine provides:
- Strict OEM Interchangeability: Our 146673-11602 gaskets are manufactured to meet Yanmar’s exact specifications, ensuring perfect bolt-hole alignment and sealing contact area.
- Global Strategic Logistics: We maintain a ready-to-ship inventory, ensuring that your critical maintenance parts reach your vessel or shipyard globally with minimal delay.
- Quality Assurance: Every batch undergoes dimensional and pressure-sealing verification to ensure that you are receiving a component that will not fail under load.
- Comprehensive Maintenance Support: We supply this gasket as part of our wider exhaust system service kits, ensuring that you have all the necessary seals to complete a leak-free installation.
Technical Maintenance Note:
When installing the 146673-11602, it is mandatory that the mating surfaces on both the cylinder head and the exhaust manifold are perfectly clean, flat, and free of old gasket residue or pitting. Using a gasket scraper and fine abrasive cloth (cleaning thoroughly afterward) is essential. Apply an even, cross-pattern torque to the manifold mounting bolts according to the manufacturer’s specifications to ensure uniform gasket compression. Never reuse an exhaust gasket; once it has been compressed and heat-cycled, it will not form a reliable second seal.
