VAPOR ADAPTER

In heavy-duty truck applications, it serves as a connecting point that mates with vapor recovery elbows or couplings, allowing fuel vapors to be returned from the vehicle's tank back to the delivery source rather than escaping into the atmosphere. You might replace this if the poppet seal is worn, the body is cracked, or the threads are damaged, which can cause vapor leaks or failed emissions compliance tests. While this specific SKU corresponds to a 'vapor adapter' listed under fuel system components, verifying its exact fitment, brand, and technical specifications without additional manufacturer documentation is challenging, as the part number cross-references in supplier databases appear to link to an obscure NSN-listed item rather than a common commercial truck part.