Product Details
Toyota Land Cruiser 79 4.5 V8 Double Cab LX D4D Viper Exhaust System – With Mid/Rear Mount Aftermarket Tank
Viper 76 mm Performance Exhaust System – Toyota Land Cruiser 79 Series 4.5 V8
Upgrade your Toyota Land Cruiser 79 Series 4.5 V8 D-4D Double Cab LX with a Viper Full 76 mm Performance Exhaust System, specifically suited to vehicles fitted with an aftermarket mid-mount or rear-mount long-range fuel tank.
This Viper system replaces the factory exhaust with a full 76 mm stainless-steel performance exhaust system from the turbo back, providing improved exhaust gas flow, enhanced sound and a performance-focused exhaust configuration for the 1VD V8 turbo-diesel engine.
This configuration is intended for Land Cruiser 79 owners who have already installed an aftermarket long-range fuel tank and require an exhaust system designed around the available space and exhaust routing. HJM Offroad lists dedicated Viper configurations for vehicles with Gerbers mid-mount and Northern Offroad / Gerbers rear-mount long-range tanks.
Key Features
- Viper Performance Exhaust System
- Designed for Toyota Land Cruiser 79 Series 4.5 V8 D-4D
- 1VD V8 turbo-diesel engine
- Double Cab LX application
- Full 76 mm exhaust system
- Stainless-steel construction
- Full system from turbo back
- Performance-focused exhaust design
- Improved exhaust gas flow
- Reduced exhaust restriction
- Enhanced exhaust sound
- Designed for vehicles with aftermarket long-range tanks
- Suitable for mid-mount and rear-mount tank configurations, subject to fitment confirmation
- Ideal for touring, towing, overlanding and off-road applications
Specifically Designed Around Your Long-Range Tank
Installing a long-range fuel tank (Brand Specific) changes the available space underneath the Land Cruiser and can affect the routing of the exhaust system.
For this reason, the correct Viper exhaust configuration must be selected according to the position and design of the aftermarket fuel tank.
Mid-Mount Long-Range Tank
This configuration is suitable for the relevant Gerbers mid-mount long-range tank application.
HJM Offroad lists the Viper full 76 mm system specifically for the Land Cruiser 79 4.5 V8 Double Cab LX with Gerbers mid-mount long-range tank.
Rear-Mount Long-Range Tank
A separate configuration is available for vehicles equipped with a Exel / Gerbers rear-mount long-range tank.
IMPORTANT: The exhaust configuration must match the actual fuel tank installed on the vehicle.
Different aftermarket tanks can have different mounting positions, shapes and clearances. Always specify the tank brand and mounting configuration when requesting a quotation.
Full 76 mm Stainless-Steel Exhaust
The Viper system is a full 76 mm stainless-steel replacement exhaust system from the turbo back.
The larger-diameter performance exhaust is designed to optimise exhaust gas flow and reduce unnecessary restriction through the exhaust system.
For the 4.5 V8 D-4D, this provides a performance-oriented upgrade that complements vehicles used for demanding applications such as towing, touring and overlanding.
Performance Benefits
A Viper performance exhaust is designed to improve exhaust gas flow and reduce back pressure.
Depending on the individual vehicle and its overall configuration, potential benefits include:
- Improved engine performance
- Improved exhaust flow
- Improved throttle response
- Reduced exhaust restriction
- Potentially improved fuel consumption
- Reduced exhaust gas temperatures on turbo vehicles
- Enhanced exhaust sound
Actual results will vary depending on the vehicle, engine condition, ECU calibration, existing modifications and complete exhaust configuration.
Improved V8 Sound
One of the biggest advantages of upgrading the factory exhaust is the change in exhaust note.
The Viper system gives the 4.5 V8 D-4D a deeper, more purposeful exhaust sound, enhancing the character of the V8 while creating a more aggressive presence on the road and off-road.
Ideal for Touring, Towing & Overlanding
The Land Cruiser 79 V8 is commonly built for demanding applications where reliability, usable performance and additional fuel range are important.
This exhaust system is particularly suited to vehicles used for:
- 4×4 Touring
- Overlanding
- Safari
- Towing
- Caravan Travel
- Long-Distance Travel
- Remote-Area Travel
- Off-Road Adventures
- Expedition Builds
- Performance Land Cruiser Builds
Combining a suitable long-range tank with the correct Viper exhaust configuration provides a practical solution for owners wanting increased fuel range without compromising the underbody exhaust arrangement.
This product is specifically intended for vehicles fitted with an aftermarket mid-mount or rear-mount long-range fuel tank.
When requesting a quotation or placing an order, please provide:
- Vehicle year
- Land Cruiser 79 Series 4.5 V8 D-4D
- Double Cab LX specification
- Long-range tank brand
- Mid-mount or rear-mount tank
- Tank model where known
- Existing exhaust configuration
- Existing downpipe, if aftermarket
- Any other modifications underneath the vehicle
Existing Aftermarket Exhaust
If your vehicle already has an aftermarket exhaust, downpipe or modified exhaust components fitted, please specify this in the order notes when requesting a quotation.
Existing aftermarket components may affect:
- Exhaust routing
- Mounting points
- Exhaust-to-tank clearance
- Required components
- Installation
- Final fitment
Do not assume compatibility with another-brand exhaust or modified exhaust system. Fitment must be confirmed before ordering.
IMPORTANT – Extra Tank & Underbody Modifications
If your vehicle has any of the following fitted, please advise us before ordering:
- Long-range fuel tank
- Auxiliary fuel tank
- Mid-mount fuel tank
- Rear-mount fuel tank
- Aftermarket exhaust
- Aftermarket downpipe
- Modified exhaust routing
- Underbody protection
- Other underbody accessories or modifications
These components may affect available clearance and exhaust routing.
Where required, HJM Offroad may request photographs of the underside of the vehicle and the existing tank/exhaust arrangement before confirming fitment.
The correct Viper configuration should be selected before installation based on the vehicle’s actual fuel-tank setup.
South African Specification Vehicles Only, unless otherwise confirmed in writing.
Vehicle specifications, model years and aftermarket equipment can differ between markets. Please provide the vehicle’s exact specification when requesting a quotation.
Actual performance, fuel-consumption, exhaust-temperature and sound improvements may vary between vehicles.
Image for illustrative purposes only. Vehicle and exhaust images may be used for display purposes and may not represent the exact vehicle specification, fuel-tank configuration or final installed exhaust system. Actual product appearance, configuration and fitment may vary.





