Nissan Patrol GQ Wagon 4.2L TD42 2.5" Exhaust System With Extractor 1987-1997

Premium 2.5" Exhaust System With Extractor for Nissan Patrol GQ Wagon 4.2L TD42 Naturally Aspirated

Transform your Nissan Patrol GQ Wagon 4.2L TD42 Naturally Aspirated with our premium 2.5" stainless steel exhaust system with extractor. Engineered and manufactured in Australia specifically for the 1987-1997 Patrol GQ Wagon with the 4.2L TD42 naturally aspirated 6-cylinder diesel engine, this complete exhaust delivers improved performance, enhanced sound, and exceptional durability for your iconic 4x4.

Key Features & Benefits

• Premium 409 Stainless Steel Construction (exhaust)- Superior corrosion resistance for Australian conditions
• Mild steel extractor
• 2.5" Mandrel Bent Tubing - Optimized diameter for the naturally aspirated TD42 engine
• Complete System With Extractor - Full replacement from extractor to rear for maximum performance gains
• Bolt-On Installation - Direct replacement
• Australian Engineered - Designed and manufactured locally for local conditions
• 5-Year Warranty on exhaust - Comprehensive coverage for peace of mind. (1 year warranty on the extractor)
• Improved Performance - Better throttle response, power delivery, and fuel efficiency
• Enhanced Sound - Deep, refined 6-cylinder diesel exhaust note without drone
• Catalytic Converter Included - Supports cleaner flow and smoother overall performance
• Muffler / Resonator Included - Optimized sound control for refined, comfortable tone
• Lightweight Design - Only 30kg for improved performance

Vehicle Compatibility

• Fits: Nissan Patrol GQ Wagon 4.2L TD42 6-Cylinder Naturally Aspirated Diesel (1987 - 1997)
• Engine: 4.2L TD42 6-Cylinder Naturally Aspirated Diesel
• Configuration: Complete system with extractor, catalytic converter and muffler / resonator
• Models: GQ Wagon variants with 4.2L TD42 naturally aspirated engine
• Note: Specifically designed for naturally aspirated TD42 engines (non-turbo)

Technical Specifications

• Material: 409 Grade Stainless Steel (exhaust), Mild steel extractor
• Pipe Diameter: 2.5 inch (63.5mm)
• Construction: Mandrel bent tubing, MIG welded
• Weight: 30kg
• System Type: Complete system with extractor, catalytic converter and muffler / resonator

What's Included

• Complete exhaust system with extractor
• High-flow catalytic converter
• Muffler / Resonator Included
• All Gaskets and hardware
• 5-year manufacturer warranty
  

Installation

This is a complete bolt-on replacement exhaust system designed for straightforward installation. Most customers with basic mechanical skills and tools can install this system in 2-3 hours. Professional installation is recommended for best results. No cutting or welding required - simply remove the factory exhaust and extractor, then bolt this system in place.

Performance Benefits

The 2.5" mandrel bent design is specifically sized for the Patrol GQ Wagon's 4.2L TD42 naturally aspirated 6-cylinder diesel engine, providing optimal exhaust flow and significantly reducing back pressure compared to the restrictive factory system. The included extractor maximizes exhaust scavenging for improved performance. You'll experience improved throttle response, better power delivery throughout the rev range, and enhanced fuel efficiency. The complete system maximizes performance gains, with noticeable improvements when towing, loaded, or tackling challenging off-road terrain. The high‑flow catalytic converter is engineered to boost performance while delivering a deep, refined 6‑cylinder diesel note that sets your vehicle apart.

Frequently Asked Questions

Will the outback exhaust improve performance on my Patrol GQ?

Yes, the outback exhaust 2.5" mandrel bent design with extractor reduces exhaust back pressure significantly, resulting in improved throttle response, better power delivery, and enhanced fuel efficiency. Most customers report noticeable improvements in drivability, especially when towing, loaded, or off-roading. The naturally aspirated 4.2L TD42 engine responds particularly well to the complete system with extractor.

How does the outback exhaust sound?

The outback exhaust produces a deep, refined tone that enhances the distinctive 6-cylinder diesel character. It's noticeably sportier than stock without being overly loud. You'll hear a satisfying growl under acceleration with minimal noise at cruise - perfect for daily driving, touring, and off-road adventures.

What's included in the 5-year warranty?

The Outback Exhaust 5-year warranty covers manufacturing defects, material failure, and weld integrity under normal use. It does not cover damage from accidents, improper installation, modifications, or extreme off-road abuse.

Do I need to tune my vehicle after installing the Outback exhaust?

No tune is required. The outback exhaust works perfectly with the factory setup and will provide noticeable improvements on its own. However, many Patrol owners choose to add other modifications later to maximize the performance benefits of improved exhaust flow.

How long does shipping take?

Most orders ship within 1-2 business days. Delivery times vary by location: metro areas typically receive orders within 3-5 business days, while regional areas may take 5-7 business days.

Do you ship internationally?

Yes, Outback Exhaust ships internationally to select countries. International shipping costs and delivery times vary by destination. Enter your country and postcode at checkout for accurate freight quotes. Please note that international customers are responsible for any customs duties, taxes, or import fees charged by their country. Contact us for specific international shipping enquiries.

Can I install the outback myself?

Yes, the outback exhaust is a bolt-on system designed for DIY installation. You'll need basic hand tools, jack stands or a hoist, and 2-3 hours. However, professional installation is recommended if you're not confident working under your vehicle.

What's the difference between this and a turbo exhaust?

The outback exhaust system is specifically designed for naturally aspirated (non-turbo) TD42 engines. It includes an extractor instead of a turbo manifold. If you have a turbocharged TD42, you'll need a different exhaust system designed for turbo applications. Please contact us if you're unsure which system you need.

Will the outback exhaust fit other Patrol models or body styles?

The outback exhaust system is specifically designed for the Nissan Patrol GQ Wagon (1987-1997) with the 4.2L TD42 naturally aspirated engine. It will not fit turbocharged TD42 models, other body styles like the Ute, or other Patrol generations like GU. Please contact us if you need an exhaust for a different Patrol model - we have specific systems for various Patrol configurations.

Does the outback exhaust improve fuel economy?

Yes, many customers report improved fuel efficiency after installing this exhaust, particularly during highway driving and when maintaining steady speeds. The reduced back pressure and improved exhaust scavenging from the extractor allow the engine to work more efficiently. However, actual fuel savings will vary based on driving style, load, and conditions.

Will the outback exhaust rust?

Our 409 stainless steel construction provides excellent corrosion resistance for Australian conditions. While 409 stainless may develop some surface discoloration over time (especially in coastal or high-humidity areas), it will not rust through like mild steel exhausts. This is why we can confidently offer a 5-year warranty.

Can I use the Outback exhaust for towing and off-roading?

Absolutely! The outback exhaust is ideal for towing and off-road applications. The improved exhaust flow and extractor design reduce back pressure, which helps the engine breathe better under load. Many Patrol owners specifically upgrade their exhaust to improve towing performance and off-road capability, and the naturally aspirated TD42 engine responds particularly well to this complete system.

What is an extractor and how does it help?

An extractor (also called headers) replaces the factory exhaust manifold with individual pipes for each cylinder that merge into a collector. This design improves exhaust scavenging, reduces back pressure, and helps the engine breathe more efficiently, resulting in better performance, especially for naturally aspirated engines like the TD42.

Ready to unleash your Patrol GQ's potential?

Order now and experience the Outback Exhausts difference. Australian made, backed by our 5-year warranty, and ready to ship Australia-wide and internationally.