Valve Stem Seal

The NRE31617 Valve Stem Seal is a precision-fit, aftermarket equivalent to OEM RE31617 designed for John Deere diesel engines, including models such as 3029D, 4039D, and 6068D PowerTech. Made from high-temperature Viton rubber and reinforced with metal bands, it ensures tight sealing around the valve stem to prevent oil leakage into the combustion chamber. Lightweight (~4.4 g), this seal is ideal for agricultural and industrial equipment maintenance and matches or exceeds OEM specifications.