Aluminum Fuel cap 3" - 8 NPSL Non-vented Fits MACK GU/ CXU613/ CX612 VOLVO VLN 630/670
DWT - Dependable Wear Technology
This is a 3‑inch, 8‑thread NPSL non‑vented aluminum fuel cap for Mack GU/CXU613/CX612 and Volvo VNL 630/670 diesel saddle tanks. Fits 3‑inch NPSL fuel filler necks on Mack GU series, CXU613/CX612, and Volvo VNL 630/670 models with non‑vented cap requirements. Non‑vented design works with tanks that have separate venting, providing thermal relief up to 190°F while meeting DOT fuel safety standards. Aluminum body ensures durability and resistance to diesel fuel, road salt, and environmental corrosion.
