Give your truck's DEF tank a clean chrome look with the Lifetime Nut Covers 0640-DEF Chrome Plastic DEF Tank Cap Cover. This universal-style cover easily snaps over the existing DEF cap to add a polished finish without replacing the original cap. It fits various Peterbilt, Kenworth, and Freightliner applications, including early-model Peterbilt 589 trucks.

This product is a cap cover ONLY, not a replacement DEF cap. It does not fit 2024 and newer Kenworth and Peterbilt models. For newer-style caps, use Lifetime Nut Covers part number 0642-DEF.

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Features:

• Part Number / SKU: 0640-DEF
• Brand: Lifetime Nut Covers
• Product Type: DEF Tank Cap Cover
• Universal-style application
• Chrome-plated plastic construction
• Easily snaps over existing DEF cap
• Fits various Peterbilt models
• Fits various Kenworth models
• Fits various Freightliner models
• Will fit early-model Peterbilt 589
• Sold Individually
• Quality American-Made Product
• Cap cover only — not a replacement cap
• Does NOT fit 2024 and newer Kenworth & Peterbilt models
• Newer-style cap uses P/N 0642-DEF

Important:
Check your existing DEF cap style and dimensions before ordering to confirm compatibility. This is a decorative cap cover only and does not replace the original DEF cap.