OEM 4TNE94 4TNV94 Engine Valve Parts Yanmar Excavator Valve IN Valve EX | Tonkee®

OEM 4TNE94 4TNV94 Engine Valve Parts Yanmar Excavator Valve IN Valve EX | Tonkee®

4TNE94 4TNV94 Engine Valve Parts Yanmar Excavator Valve IN Valve EX | Tonkee®
Material: Just like the IN valve, the EX valve is also made from durable materials, typically stainless steel or heat-resistant alloys. This material selection ensures that the valve can withstand the high temperatures and pressures associated with the exhaust process.
Precision Design: The EX valve must be precision-engineered to fit the specific engine model accurately. It should open and close efficiently to facilitate the expulsion of exhaust gases while preventing leaks.
4TNE94 4TNV94 Engine, Valve Parts Yanmar Excavator Valve IN Valve EX | Tonkee®

The intake valve, often referred to as the IN valve, is a key component in the engine's air intake system.


It is responsible for allowing fresh air into the engine cylinders during the intake stroke, which is essential for the combustion process. The specifications for the IN valve are as follows:

Material: The IN valve is typically manufactured using high-quality materials such as stainless steel or heat-resistant alloys. These materials are chosen for their ability to withstand high temperatures and pressures within the engine.

Precision Design: The IN valve is meticulously designed to ensure a perfect fit within the engine. It must open and close with precision to allow the right amount of air to enter the combustion chamber.

Heat Resistance: Given that the IN valve operates in a high-temperature environment, it must be heat-resistant to avoid warping or failure. It can endure the extreme conditions associated with engine operation.

Efficient Airflow: The IN valve is designed to facilitate efficient airflow into the engine. This is crucial for achieving proper combustion, as a well-regulated air-fuel mixture ensures optimal engine performance.

Exhaust Valve (EX):
The exhaust valve, often referred to as the EX valve, is another vital component of the engine.


It plays a critical role in the exhaust stroke of the engine cycle, allowing the expulsion of exhaust gases from the combustion chamber. The specifications for the EX valve are as follows:

Material: Just like the IN valve, the EX valve is also made from durable materials, typically stainless steel or heat-resistant alloys. This material selection ensures that the valve can withstand the high temperatures and pressures associated with the exhaust process.

Precision Design: The EX valve must be precision-engineered to fit the specific engine model accurately. It should open and close efficiently to facilitate the expulsion of exhaust gases while preventing leaks.

Heat Resistance: The EX valve is subjected to extreme heat during the exhaust stroke. It must be highly heat-resistant to endure these conditions without warping or damage.

Efficient Exhaust: Proper exhaust is crucial for engine efficiency and emissions control. The EX valve is designed to allow the efficient expulsion of exhaust gases, contributing to reduced emissions and better engine performance.
Products 4TNE94 4TNV94 Engine Valve Parts Yanmar Excavator Valve IN Valve EX | Tonkee®
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