The Redback Extreme Duty Exhaust for 79 Series Double Cab (2012–2016) with auxiliary fuel tank is a 3″ turbo‑back system engineered for Landcruiser owners who have installed a long‑range / auxiliary fuel tank ahead of the rear differential. Built from durable 409 stainless‑steel tubing and manufactured in Australia, the exhaust features heavy‑duty 4‑bolt, 10 mm flange plates, extreme‑duty hanger brackets, pressed fire‑ring gaskets, and a removable ¼″ NPT plug boss for optional EGT sensor installation. The exhaust system accommodates either a 5" round straight‑through resonator for a balanced sound or a muffler‑delete (pipe‑only) configuration for maximal flow and more aggressive exhaust tone. The tube, flanges, and hangers are coated with premium heat‑proof paint to resist corrosion, heat, and the stresses of off‑road or heavy‑duty use. Designed specifically for vehicles without DPF but equipped with an auxiliary fuel tank, this kit ensures correct exhaust routing and clearance while maintaining exhaust performance and reliability. Approximate installation time is ~2.5 hours, and the system is backed by Redback’s 10‑year warranty.