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DEF Cap & Filler Neck Kit
Kenworth®

The DEF Cap & Filler Neck Kit provides a complete solution for the proper filling and sealing of your Kenworth's Diesel Exhaust Fluid system. This kit includes a durable filler neck and a secure cap designed to prevent leaks and contamination. Crafted from high-quality materials, it ensures long-lasting performance under demanding conditions. Easy to install, this kit helps maintain your vehicle’s emission compliance and prevents DEF spillage, which can cause environmental harm. Ideal for repairs or upgrades, the kit guarantees a tight seal and reliable operation. Source One Parts Center is your trusted source for genuine OEM parts, offering the best quality and service for Kenworth trucks.