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Every order ships free with tracking. Dispatch is usually within 1–2 working days and delivery within 3–8 working days.
Email us your order number within 30 days of delivery and we send the return steps the same working day. Refunds within 5 working days of receipt.
Send your registration or make, model and year to britishgarage.co.uk@gmail.com and we check the listing details against it before you order.
Calvana's 2-pack roof vent operator is a direct-fit replacement arm for Jensen and Heng's style vents that restores smooth, reliable crank operation.
If your RV or trailer roof vent has a stiff, stripped, or broken operator arm, this Calvana 2-pack offers an affordable way to get the vent working again without replacing the entire assembly. Each operator arm is built to the same dimensional standards as common Jensen and Heng's replacement parts, providing a snug fit for JRP1000RC and several Heng's models. The pair includes two 6-inch arms (crank handle not included) so you can replace both the worn part and keep a spare on hand for future maintenance.
Replacing a worn or damaged operator arm restores smooth opening and closing, improves airflow control, and reduces stress on the vent drive mechanism. The Calvana arm is machined to match OEM geometry so it engages the vent gear correctly and avoids slop or binding.
Calvana designed this operator to be compatible with multiple Jensen and Heng's vent models, including the JRP1000RC and commonly referenced HENG'S 501/1034 replacements. Verify the arm length and mounting hole pattern on your current operator before ordering to ensure compatibility.
Installation is straightforward for someone comfortable with basic hand tools and simple fastener removal. The arm replaces the worn operator by removing the retaining clip or screw, aligning the new arm, and securing it in place; most installs take 10–30 minutes per vent.
Calvana builds these operators from durable materials designed to resist bending and wear under typical roof vent loads and weather exposure. While not a sealed gearbox, the arm withstands everyday use and helps prolong the life of the vent mechanism when installed properly.
Who is this for? If you own an RV, camper, or trailer with a Jensen or compatible Heng's roof vent that opens with a crank arm, and the operator is bent, stripped, or loose, this Calvana 2-pack is a practical OEM-style replacement. It suits DIYers who want a reliable, cost-effective repair without replacing the whole vent assembly, fleets maintaining multiple vehicles, or anyone who prefers keeping a spare operator on hand for quick roadside fixes.
Q: Does this include the crank handle?
A: No. The Calvana operator 2-pack includes two 6-inch arms only; reuse your existing crank handle.
Q: Will it fit my JRP1000RC vent?
A: Yes. The arm is designed to be compatible with Jensen JRP1000RC and many Heng's replacement patterns; verify hole spacing first.
Delivery: free tracked delivery to every UK postcode on every order. Most orders are dispatched within 1–2 working days and arrive within 3–8 working days; you receive a tracking link by email as soon as it ships.
Returns: 30 days from delivery to return any unused item in its original packaging. Email us with your order number and we send the return instructions the same working day. Refunds go back to your original payment method within 5 working days of the item arriving with us.
Faulty or wrong item? Tell us within 30 days and we replace or refund it, including the return postage.
Seasonal UK driving advice and a heads-up when new stock lands. No spam, unsubscribe any time.
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