Israel is developing domestically produced external fuel tanks to extend the range and endurance of its F-35I "Adir" stealth fighter jets [1, 2].
The modification allows the Israeli Air Force to operate its most advanced aircraft over longer distances without relying on frequent refueling. This capability is critical for conducting long-range missions amid the ongoing conflict with Iran and its regional proxies [2, 4].
Elbit Systems was awarded a contract in 2024 to produce the tanks [2, 5]. The value of the contract is approximately $34 million, which is roughly 100 million NIS [2]. These external tanks are designed to push the operational range of the aircraft beyond 1,200 miles [3].
While the F-35 is designed for stealth, external tanks typically increase the radar cross-section of an aircraft. However, the domestic development of these tanks suggests a strategic priority for endurance and reach over absolute stealth for specific mission profiles [1, 2].
This range boost coincides with a broader expansion of Israel's stealth capabilities. The Israeli Air Force plans to begin receiving an additional squadron of 25 stealth fighters starting in 2028 [5].
The integration of these tanks by Elbit Systems ensures that the Israeli Air Force can maintain a high level of operational flexibility. By producing the components domestically, Israel reduces its dependence on foreign suppliers for critical modifications to its fleet [1, 2].
“The range extension exceeds 1,200 miles”
The shift toward external fuel tanks indicates that Israel is prioritizing 'reach' and 'loiter time' to project power deeper into enemy territory, specifically targeting Iranian interests. By augmenting the F-35I's range and expanding the fleet size by 2028, Israel is signaling a long-term strategic pivot toward sustained, long-distance aerial dominance in the region.
