German engineering for the North American RV industry
Keyed alike with the vehicle

Lockable filler caps for fresh water or diesel

Diesel-resistant, drinking-water suitable and prepared for STS, Zadi, FF-2 and HSC cylinders.

Filler Caps
Filler Necks & Caps

Filler Caps

The STS filler cap fits all common filler necks and can be keyed alike with every other lock on the vehicle.

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