The Yanmar 12900511100 exhaust valve is a genuine OEM component engineered for optimal performance in various Yanmar engines, including the 3TNV88, 4TNV88, 4TNV84T, 4TNV84, 3TNV84T, and 3TNV84 series. This critical engine part ensures proper exhaust gas flow and engine efficiency. With a length of 91.44 mm, a head diameter of 27.94 mm, and a stem diameter of 5.08 mm, this valve is manufactured to precise specifications. It is commonly found in agricultural and construction machinery that utilizes these Yanmar engines, including certain Case IH models.