Best Exhaust for Toyota Landcruiser 75 Series (1HZ, 1HDT & 2H)

By Outback Exhausts | Australian-Made Performance Exhaust Systems

The Toyota Landcruiser 75 Series is one of Australia's most enduring working 4WDs. Whether it's a Ute hauling gear across a station, a Troop Carrier doing school runs in the outback or a well loved tourer clocking up kilometers on the blacktop and dirt the 75 Series has earned its place as a genuine Australian icon.

If you're looking to get more out of yours better fuel economy, more torque or just a system that isn't 30 years old and held together with hope this guide covers everything you need to know about exhaust upgrades for the 75 Series.

What engine does the Toyota Landcruiser 75 Series have?

The 75 Series ran from 1984 to 2002 in Australia and came with several engine options depending on the year:

• 4.0L 2H diesel (1984–1989) — Available with a factory CT26 turbo and a DTS Turbo upgrade.
• 4.2L 1HZ diesel (1990–2002) — the naturally aspirated workhorse that replaced the 2H; one of the most popular diesel engines Toyota ever made
• 4.2L 1HDT diesel (1990–2002) — the factory turbocharged version of the 1HZ fitted to higher spec models
• DTS turbo upgrade — a popular aftermarket conversion fitted to both 4.0L 2H and 4.2L 1HZ diesel engines replacing the factory turbo

Each engine has different exhaust requirements so matching the right system to your setup is important.

75 Series Exhaust Systems from Outback Exhausts — At a Glance

Exhaust System	Engine Fit	Tube Size	Best For	Key Benefit
Extractor (Header)	4.2L 1HZ (N/A, 1990–2002)	2.5"	1HZ owners wanting the single biggest performance gain	Dramatically improves exhaust scavenging more torque, better economy, cooler running
Manifold-Back Exhaust	4.2L 1HZ (N/A, 1990–2002)	2.5"	1HZ owners wanting full free flowing system without an extractor	Complete front to back upgrade, mandrel bent for reduced backpressure
Engine Pipe Back Exhaust	4.2L 1HZ (N/A, 1990–2002)	2.5"	Budget conscious 1HZ owners wanting meaningful flow improvement	Cost effective upgrade starting from the engine pipe better flow than factory
Exhaust with Extractor (Full System)	4.2L 1HZ (N/A, 1990–2002)	2.5"	1HZ owners wanting the complete performance upgrade	Extractor + full mandrel-bent system the definitive N/A 1HZ exhaust package
Turbo Back Exhaust	4.2L 1HZ / 1HDT Factory Turbo (1990–2002)	3"	Factory turbo 75 Series Ute & Troop Carrier owners	Removes the biggest restriction on the 1HDT significant power and response gains
Turbo Back Exhaust (DTS)	4.2L 1HZ DTS Turbo Upgrade (1990–2002)	3"	DTS converted 1HZ builds needing a matched larger turbo exhaust	Engineered to match DTS turbo airflow the definitive exhaust for a DTS 1HZ build
Turbo Back Exhaust — 2H CT26	4.0L 2H Factory Turbo CT26 (1984–1989)	3"	Factory turbo 2H owners in early 75 Series Utes & Troop Carriers	Complete turbo back system matched to the CT26 factory turbo setup
Turbo-Back Exhaust — 2H DTS	4.0L 2H DTS Turbo Upgrade (1984–1989)	3"	DTS converted 2H builds in early 75 Series vehicles	Full turbo back system matched to the larger DTS turbo output

 

Why upgrade the exhaust on a 75 Series Landcruiser?

The factory exhaust on a 75 Series was never designed for performance it was designed to be cost effective to produce and quiet enough to pass compliance. On a vehicle that's now 25 – 40 years old those systems are also well and truly past their use by date.

An Outback Exhausts upgrade delivers:

• Better fuel economy — less backpressure means the engine breathes easier and burns fuel more efficiently
• More torque and power — especially noticeable on turbo variants and DTS conversions
• Improved throttle response — the engine feels more alive particularly at low RPM where diesels do their best work
• Cooler running temperatures — better exhaust flow reduces heat soak in the engine bay
• Longer engine life — reduced backpressure lowers stress on turbo seals, exhaust valves and the engine overall

Outback Exhausts systems for the 1HZ naturally aspirated diesel (1990–2002)

The 1HZ is the engine most 75 Series owners are running. It's simple, tough and responds well to exhaust upgrades particularly extractors which make a noticeable difference on a naturally aspirated diesel.

Extractor (Header)

The single best upgrade you can do on a naturally aspirated 1HZ. Replaces the restrictive factory cast-iron manifold and dramatically improves exhaust scavenging more torque, better economy, cooler running.

Extractor — Toyota Landcruiser 75/79 Series 4.2L 1HZ Ute & Troop Carrier (1990–2007)

Manifold-Back Exhaust

A full free flowing exhaust from the manifold to the rear without the extractor. A solid upgrade for owners who want improved flow throughout the system.

Manifold-Back Exhaust — Toyota Landcruiser 75 Series 4.2L 1HZ (1990–2002)

Engine Pipe Back Exhaust

Starts from the engine pipe rather than the manifold a cost-effective option that still delivers meaningful flow improvements over the factory system.

Engine Pipe Back Exhaust — Toyota Landcruiser 75 Series 4.2L 1HZ (1990–2002)

Exhaust with Extractor (Full System)

The complete package extractor plus a full mandrel bent exhaust system. The most comprehensive upgrade available for the naturally aspirated 1HZ.

Exhaust with Extractor — Toyota Landcruiser 75 Series 4.2L 1HZ (1990–2002)

Outback Exhausts systems for the 1HDT factory turbo (1990–2002)

The 1HDT is a strong engine straight from the factory but the stock exhaust holds it back. A proper turbo back system and dump pipe upgrade will unlock what it's actually capable of.

Turbo Back Exhaust — 1HZ/1HDT

The complete turbo-back solution for factory turbo 75 Series Utes and Troop Carriers. Mandrel bent, free flowing and built to handle the demands of a turbocharged diesel.

Turbo-Back Exhaust — Toyota Landcruiser 75/78 Series Ute & Troop Carrier 4.2L 1HZ/1HDT (1990–2002)

Turbo-Back Exhaust (alt fitment) — Toyota Landcruiser 75/78 Series 4.2L (1990–2002)

Outback Exhausts systems for the 1HZ DTS turbo upgrade

The DTS turbo conversion is one of the most popular performance upgrades for 1HZ owners. A larger turbo means significantly more power and torque but your exhaust needs to flow to match it.

Turbo-Back Exhaust — 1HZ DTS Turbo

The full system for DTS converted 75 Series Utes and Troop Carriers. Matched to the larger turbo's output for maximum flow and performance.

Turbo-Back Exhaust — Toyota Landcruiser 75 Series 4.2L 1HZ DTS Turbo (1990–2002)

Outback Exhausts systems for the 2H diesel (1984–1989)

The earlier 2H powered 75 Series both naturally aspirated and factory turbo is still very much alive in the Australian 4WD community, particularly in the working vehicle space.

Turbo Back Exhaust — 2H Factory Turbo CT26

The complete turbo back system for factory turbo 2H powered 75 Series vehicles.

Turbo-Back Exhaust — Toyota Landcruiser 75 Series 4.0L 2H Factory Turbo CT26 (1984–89)

Turbo Back Exhaust — 2H DTS Turbo

The full turbo-back system for 2H DTS converted 75 Series Utes and Troop Carriers.

Turbo-Back Exhaust — Toyota Landcruiser 75 Series 4.0L 2H DTS Turbo (1984–89)

Why choose Outback Exhausts for your 75 Series?

We're not an importer. Every exhaust system we sell is designed and manufactured in Australia, built specifically for Australian conditions and Australian vehicles. That means:

• Correct fitment — engineered for right-hand drive Australian spec Utes and Troop Carriers
• ADR compliant — meets Australian Design Rules so you stay legal on the road and the track
• Quality materials — mandrel bent tubing, quality flanges and proper welds that last
• Local support — you're dealing with Australians who know these vehicles

We've built exhaust systems for 75 Series Landcruisers for years. We know the fitment differences between Utes and Troop Carriers the quirks of the 1HZ vs 1HDT and what actually works in the real world whether you're touring the Gibb River Road or working a station in the Kimberley.

Browse the full 75 Series exhaust range

Not sure which system suits your engine and body style? Browse our complete range.

Toyota Landcruiser 75 Series Exhaust Systems — Full Range

Frequently Asked Questions

What exhaust fits a Toyota Landcruiser 75 Series 1HZ?

The 1HZ suits an extractor, manifold back exhaust, engine pipe back exhaust or a full exhaust with extractor package. The extractor alone delivers the strongest gains on a naturally aspirated engine while the full system is the most complete upgrade.

What's the difference between the 1HZ and 1HDT in the 75 Series?

The 1HZ is naturally aspirated no turbo from the factory. The 1HDT is the turbocharged version of the same engine block producing more power and torque. Both engines share some exhaust components but turbo specific parts like the dump pipe are different.

Does a 75 Series 1HDT need a dump pipe upgrade?

Yes the factory dump pipe is a known restriction and is often cracked or corroded on vehicles of this age. Replacing it is one of the highest value upgrades you can do on a factory turbo 75 Series.

Is a DTS turbo upgrade worth it on a 75 Series 1HZ?

For owners who want a significant power and torque increase, yes the DTS conversion is a popular and well-proven upgrade. If you go down this path your exhaust system needs to match the larger turbo's output which is where our DTS specific dump pipes and turbo-back systems come in.

What's the difference between a manifold-back and a turbo-back exhaust?

A manifold back exhaust starts from the exhaust manifold and runs to the rear suited to naturally aspirated engines. A turbo-back exhaust starts from the turbo outlet (dump pipe) and runs to the rear only relevant for turbocharged engines (1HDT, DTS, or 2H turbo).

Are Outback Exhausts ADR compliant?

Yes. All our exhaust systems are designed to comply with Australian Design Rules, so they're road legal across Australia.

Does Outback exhausts make exhausts for both the Ute and Troop Carrier body styles?

Yes we have systems for both. Fitment can differ between body styles so check the product listing for your specific configuration or get in touch if you're unsure.

What's the benefit of an Australian made exhaust over an imported one?

Australian made exhausts are engineered for Australian spec vehicles, local conditions and ADR compliance. Imported systems are often built for left hand drive markets and may require modification to fit correctly.

Have a question about fitment or not sure which system suits your build? Browse our full 75 Series range or get in touch — we're happy to help.