A loose RV propane cylinder is a retention-hardware problem, not just a missing lock. The cylinder pan, threaded centre rod, top hold-down bar and fasteners perform different jobs. This illustrated identification guide shows how those components relate, explains the JR Products parts family, and helps you distinguish a replacement tank base from an anti-theft lock or freestanding stabilizer.
Identify each part of a dual-cylinder mounting setup
On many travel-trailer-style dual-cylinder mounts, the pan supports the cylinders while a centre threaded rod, top bar and retaining hardware keep the cylinders secured. Optional locks are separate from the structural hold-down system.
Retention hardware
Other nearby parts
JR Products cylinder mounting part numbers
JR Products identifies separate components for a dual-cylinder installation. Its 07-30485 pan is polar white, while the 07-31535 dual-tank pan is black. The parts-reference family also includes notched bar 07-30475, threaded rod 07-30515 for 20-lb cylinder applications, threaded rod 07-30525 for 30-lb applications, and wing nut 07-30535.
| MPN | Component | How to identify it |
|---|---|---|
| 07-30485 | Dual-cylinder base, white | Compare tray layout and original platform dimensions |
| 07-31535 | Dual-cylinder base, black | Same general purpose, different manufacturer part number and colour |
| 07-30475 | Notched hold-down bar | Bar notch and contact points against existing cylinders and rod |
| 07-30515 | 20-lb-application threaded rod | Manufacturer calls out 1/2-inch thread; confirm rod length and mounting |
| 07-30525 | 30-lb-application threaded rod | Manufacturer calls out 1/2-inch thread; confirm rod length and mounting |
| 07-30535 | Galvanized wing nut | Verify the thread and existing retainer arrangement |
The rods, bar and wing nut are listed here as manufacturer reference parts, not as currently available UsedRVParts product cards. Product cards below represent only actual catalog items.
Find a lock that fits the centre threaded rod
For a compatible keyed lock, TorkLift A7701 is designed around a 3/8-inch centre rod, while A7702 is for a 1/2-inch rod. The Camco 40590 includes separate top plates for both sizes and a combination padlock. The AP Products 013-705 instead uses a keyed locking-hardware arrangement whose physical fit needs to be checked against the existing retention rack.
Measure the exposed rod rather than estimating from the cylinder's 20-lb or 30-lb capacity. A tank lock discourages removal but does not make an insecure or damaged tank mount roadworthy. The cylinder retention hardware must function correctly even without the optional anti-theft lock.
Compare existing catalog parts and their photographs
The following are real UsedRVParts product listings, including replacement parts that may be new rather than removed from another RV. Open a listing for its condition, availability and fit details. Viewing and pickup, where available, are by appointment in Kelowna.
Manufacturer parts reference
JR Products lists its tray, centre rods, crossbar and fastening parts in the LP tank-parts reference. TorkLift explains the A7701/A7702 rod-size difference in the Fortress GasLock product documentation. Follow the vehicle and product installation manuals for structural mounting and safe propane-cylinder retention.