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The FC1349AD from Cleveland Tank is a 3.00-inch diesel fuel cap machined from lightweight, corrosion-resistant aluminum, built to resist leaks, cracks, and contamination over years of service. It has a female thread design at 8 threads per inch (8 TPI), non-locking and non-vented, for diesel fuel systems specifying a standard 3.00-inch, 8 TPI female-thread cap. Weighing 1.0 lb at 3.0 x 3.0 x 2.0 inches, it installs as a direct-fit replacement without any modification to the tank opening — a simple, no-hardware swap for a cracked, corroded, or missing OE cap.
The FC01015VNT from Cleveland Tank is a vented, non-locking diesel fuel cap built for fuel systems that rely on the cap itself — not a separate equalizer line — to let air into the tank as fuel is drawn down. It has a 4.00-inch diameter and female threads at 8 threads per inch (8 TPI), machined from lightweight, corrosion-resistant aluminum. Fitting a non-vented cap on this type of system risks vacuum lock, so the FC01015VNT is specced to avoid that while keeping the tank sealed against leaks and contamination. It weighs 1.0 lb at 4.0 x 4.0 x 2.0 inches and installs as a direct-fit replacement for diesel fuel tanks specifying a 4.00-inch, 8 TPI vented cap.
The FC-C-92 from Cleveland Tank is a 4.00-inch diesel fuel cap with a male thread design, for fuel tank necks that take a male-threaded cap rather than the female-threaded style used on most of Cleveland Tank’s other caps. It has 8 threads per inch (8 TPI) and is machined from lightweight, corrosion-resistant aluminum, non-locking and non-vented. Weighing 1.0 lb at 3.0 x 3.0 x 2.0 inches, the FC-C-92 is a direct-fit replacement for diesel fuel systems specifying a 4.00-inch, male 8 TPI thread cap — confirm your tank’s thread gender before ordering, since male and female caps aren’t interchangeable.
The Zinga Industries FB1006000D0 hydraulic filler breather protects reservoirs with a durable aluminum cap and 10-micron foam filter. It features a lockable design, built-in dipstick and comes with (6) self-tapping screws for quick installation. Designed without a pressure relief valve, this breather ensures unrestricted venting while providing reliable contamination control for demanding hydraulic applications.