Protect and customize your DEF tank with the Lifetime Nut Covers 0643-DEF Diesel Exhaust Fluid Cap Cover. Designed for 2024 and newer Peterbilt and Kenworth models, this chrome-plated ABS cover snaps directly over the existing DEF cap for a secure, no-tools installation. The precision-cut tether slot maintains full tether functionality while adding a clean chrome finish to your truck. Made in the USA and built to resist road grime, UV exposure, and diesel fumes.

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Features:

• Part Number / SKU: 0643-DEF
• Brand: Lifetime Nut Covers
• Product Type: Diesel Exhaust Fluid (DEF) Cap Cover
• Application: 2024 and newer Peterbilt & Kenworth
• Fits Peterbilt 579 / 567 (2024+)
• Fits Kenworth T680 Next Gen / W990 (2024+)
• Designed for OEM-style DEF caps with attached tethers
• Chrome-Plated ABS Construction
• Precision Tether Cut-Out
• Snaps over existing DEF cap
• No adhesives, drilling, or special tools required
• Resistant to diesel fumes, road grime, and UV exposure
• Made in the USA
• Adds a polished chrome finish to the DEF cap area

Important:
Verify your truck year, model, and OEM-style DEF cap with attached tether before ordering. Fitment is intended for the listed 2024+ Peterbilt and Kenworth applications.