100334VSI
Locking DEF Cap (40mm)
Kenworth

The Locking DEF Cap with a 40mm diameter is an essential component for sealing and securing the Diesel Exhaust Fluid (DEF) tank on Kenworth trucks. Designed to prevent contamination, spillage, and unauthorized access, this cap features a locking mechanism that ensures the DEF remains clean and uncontaminated during operation and storage. Constructed from durable, weather-resistant materials, it withstands harsh environmental conditions, including extreme temperatures and exposure to chemicals. Proper sealing of the DEF tank is crucial for maintaining emission standards and engine performance. Sourcing genuine OEM parts like this locking DEF cap from Source One Parts Center guarantees perfect fitment, reliable sealing, and long-lasting durability, helping you keep your Kenworth truck compliant and running efficiently.