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DEF Tank Locking Caps

As little as .169 ounces/5ml of diesel or other fluids in a DEF or AdBlue Reservoir can cost thousands of dollars in aggravating service repairs. Stops contamination and costly engine repairs. Prevents sabotage, theft, and/or cross contamination. Free spins when locked.

All Parts

1-2 of 2 Items
Part # Product # Description Type Cam Type Locking Venting Neck Diameter (in) Cap Depth
74100704 30002L HD Locking DEF CAP DEF Locking Cap Quick-On false Vented 1.57 mm 0.67 in
74100702 30001L HD Locking DEF CAP DEF Locking Cap Quick-On false Vented 2.36 mm 1 in
1-2 of 2 Items

Blue caps easily identify DEF tank filler neck, and are easily distinguished from other vehicle tanks. Features a locking mechanism to prevent theft, vandalism, or accidental incorrect fluid fills.