High-quality 2.5″ stainless steel exhaust system — manifold-back for Toyota LandCruiser 79 Series (4.2 L 1HZ NA, 1999–2007). Tough, mandrel-bent construction for improved flow, torque and reliability on tour or on the job.
This Australian-made 2.5″ manifold-back exhaust system suits the Toyota LandCruiser 79 Series single cab with the 4.2 L 1HZ naturally aspirated diesel engine (1999–2007). Outback Exhausts engineer the system from mandrel-bent 409 stainless steel to handle harsh Australian conditions and improve exhaust flow, throttle response and everyday drivability. Its free-flowing design allows the 1HZ engine to breathe more efficiently, which benefits vehicles used for touring, towing or carrying heavy loads.
Outback Exhausts manufacture this system as a direct bolt-on replacement for the factory exhaust. It mounts to the original chassis points, allowing installers to complete the job without welding. You can choose a large muffler for a quieter touring setup or a straight pipe for a more aggressive note. The kit includes all hardware needed for a secure and reliable fit.
Key Features
2.5″ mandrel-bent 409 stainless steel for strength and consistent flow
Australian-made construction for long-term durability
Manifold-back design that replaces the complete factory system
Bolt-on fitment using factory mounting locations
Choice of large muffler (quiet) or straight pipe (loud)
Improves throttle response and enhances exhaust tone
Outback Exhausts 5-year warranty
Specifications
Vehicle: Toyota LandCruiser 79 Series (single cab)
Engine: 4.2 L 1HZ naturally aspirated diesel
Year range: 1999–2007
Diameter: 2.5″ (approx. 63.5 mm)
Material: 409 stainless steel
Fitment: Bolt-on manifold-back system
Sound options: Large muffler or straight pipe
SKU: OE4422-S
What’s in the Box
Complete 2.5″ manifold-back exhaust assembly
Large muffler or straight pipe (based on your selection)
All clamps, brackets and required mounting hardware
Compatibility
This system suits Toyota LandCruiser 79 Series single cab models fitted with the 4.2 L 1HZ engine from 1999 to 2007. It aligns with the factory manifold and mounting points. Vehicles equipped with long-range tanks, large trays or extensive underbody accessories may need small clearance adjustments.
Delivery & Lead Times
Outback Exhausts ship all systems from Queensland. Freight carriers may pack your order in multiple cartons depending on weight and size limits. A commercial delivery address helps avoid residential or remote-area surcharges. International freight quotes are available upon request.
Professional Fitting Service
Sunshine Coast Diesel Tuning offers professional installation of all Outback Exhaust systems. Our team ensures correct alignment, secure mounting and reliable long-term performance. We can also recommend supporting upgrades for towing and touring setups.
