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Brass Non-Locking
Diesel Fuel Cap –
4.25″ Diameter

FC1003

Additional information

Weight 1.0 lbs
Dimensions 4.25 × 4.25 × 2.0 in
Material

Diameter Nominal

4.25"
Male/Female

Threads Per Inch

Locking

Vented

No
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Description

The FC1003 is the locking counterpart to Cleveland Tank’s FC1002 — same 4.25-inch diameter, male 8 TPI thread, and brass construction, with an integrated lock added for fuel systems where theft and tampering are a concern. Two keys ship with every cap, so there’s already a backup if one gets lost.

The male thread means it fits into a female-threaded tank neck, and at 4.25 inches it’s sized larger than Cleveland Tank’s standard 3″ and 4″ caps, so confirm both the diameter and thread gender against your tank before ordering. Brass adds rigidity and durability beyond what a standard aluminum cap offers, and the cap is non-vented, built for fuel systems that equalize through a separate line rather than the cap itself.

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