
Redback 4x4 Extreme Duty Twin Exhaust for Toyota Landcruiser
Redback ExhaustsRRP$3944.00Redback 4x4 Extreme Duty Twin Exhaust.
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Redback Performance Centre Muffler Assembly.2L 1HZ & 4.5L FZ (03/1998 - 10/2007) for Toyota.
Category: Mufflers and resonators


The Redback STR503 is a performance centre muffler assembly for the Toyota Landcruiser 105 Series wagon, listed for the 4.2L 1HZ and 4.5L FZ engines from 03/1998 to 10/2007. It's the mid-section silencer for the big solid-axle wagon.
This is the centre section of the exhaust supplied as an assembly with a muffler, sitting between the front pipe and the rear of the 105 wagon. It does a share of the silencing and sets a lot of the tone you hear in the cabin on a long touring drive. Coming as an assembly means it drops into the middle of the run as one piece rather than needing pipework built around a bare box.
It's listed for both the 4.2L 1HZ diesel and the 4.5L FZ petrol six in the 105 Series. Those are the two long-serving 105 engines, and exhaust routing can differ between drivetrains, so confirming which engine you have keeps the centre section matched. The supplier doesn't publish a bore figure for this assembly, so we confirm pipe size on the car.
It's listed to fit the Toyota Landcruiser 105 Series wagon with the 4.2L 1HZ or 4.5L FZ engine, built 03/1998–10/2007. Because that's a long run with two engines, confirm your exact engine, year and the rest of your pipework with the workshop before ordering.
Oak Flats Muffler Men supplies and fits this centre assembly in-house across the Illawarra. We cut it into your existing run, check it clears the chassis and crossmembers on the solid-axle wagon and set the hangers. Bring the Cruiser in and we'll confirm pipe size and fit before booking.
Stocked and fitted by Oak Flats Muffler Men, the Illawarra exhaust and 4x4 specialist in Oak Flats, NSW.
Oak Flats Muffler Men can check this part against supplier specs, part number, image, RRP and vehicle details for customers around Oak Flats, Shellharbour, Wollongong, Dapto, Albion Park, Kiama and the northern suburbs.
Send the vehicle make, model, year, engine, current issue, desired sound or performance goal, and clear photos of the existing exhaust where available.