Suzuki Sierra SJ413 SJ70 1985-1996 1.3L G13A G13BA Wildcat Exhaust Headers WILD005

Wildcat WILD005 headers (extractors) are designed for Suzuki Sierra SJ413 / SJ70 1.3L 4WD models from 1985-1996 fitted with the G13A or G13BA petrol engine.

WILD005 features a Tri-Y design developed for street performance applications, using 38mm primary pipes and 44mm secondary pipes to improve exhaust flow, torque, throttle response and engine performance.

IMPORTANT: WILD005 suits leaf-spring Sierra models only. It will not fit the later coil-spring SJ80. Use WILD712 for the coil-spring application.

Welding is required to connect WILD005 to the exhaust system.

Please check availability and current lead time before ordering.

Key Features

• Suits Suzuki Sierra SJ413 / SJ70 1.3L 4WD
• Suits G13A and G13BA petrol engines
• Tri-Y header design
• 38mm (1½") primary pipes
• 44mm (1¾") secondary pipes
• Designed for leaf-spring suspension models
• Welding required for exhaust connection
• Australian Made

Construction

Wildcat WILD005 headers feature a Tri-Y configuration using 38mm (1½") primary pipes and 44mm (1¾") secondary pipes.

Wildcat headers are manufactured in Australia by the same Australian manufacturer responsible for Genie headers.

Additional Options

For the later coil-spring Suzuki Sierra SJ80, use the appropriate Wildcat WILD712 header application.

Vehicle Fitment

• Make: Suzuki
• Model: Sierra
• Series: SJ413 / SJ70
• Year Range: 1985-1996
• Engine: 1.3L G13A / G13BA
• Fuel: Petrol
• Drive: 4WD
• Suspension: Leaf spring

Australian Model Note: Early 1.3L Sierra models were sold as the narrow-track SJ50/SJ413 with the 1324cc G13A, followed by the wide-track SJ70/SJ413 with the 1298cc G13-series engine. WILD005 covers the applicable leaf-spring 1.3L Sierra range. The later SJ80 changed to coil-spring suspension and requires WILD712.

Header Specifications

• Part Number: WILD005
• Design: Tri-Y
• Primary Pipes: 1½" (approximately 38mm)
• Secondary Pipes: 1¾" (approximately 44mm)
• Exhaust Connection: Welding required
• Manufacture: Australian Made

Fitment Notes

WILD005 will not fit the coil-spring Suzuki Sierra SJ80. The Wildcat application for the coil-spring model is WILD712.

Welding is required to connect WILD005 to the vehicle's exhaust system. Professional installation is recommended.

Because these vehicles are now several decades old and are commonly modified for off-road use, confirm the engine, suspension configuration, exhaust routing and available clearances before ordering.

What's Included

Wildcat WILD005 header assembly. Gaskets, fasteners and other installation components should not be assumed to be included unless specifically shown or stated with the product.

Recommended With

RBG005S – exhaust manifold/header gasket specified for the WILD005 application.

Why Good Headers & Exhaust Systems Matter

The 1.3L G13A/G13BA four-cylinder engine theoretically draws approximately 2,600 litres of intake air per minute at 4,000 rpm at 100% volumetric efficiency. Once combustion has taken place, the hot exhaust gases occupy substantially more volume as they travel through the exhaust system.

Using an illustrative exhaust temperature of approximately 600°C, this represents around 7,800 litres of exhaust gas per minute. A well-designed header and exhaust system helps manage this high gas flow efficiently, reducing restriction and improving exhaust scavenging, torque, throttle response and engine performance.

Installation Tips

Professional installation is recommended because welding is required to connect the headers to the exhaust system. Trial-fit the headers and check clearance around the chassis, steering, suspension and drivetrain before completing the exhaust connection.

Lubricate threaded fasteners with WD-40 or a similar penetrating lubricant before removal to assist with easier removal and installation. After installation and several heat cycles, inspect the system for exhaust leaks and recheck accessible fasteners where appropriate.

Warranty & Compliance

Installation should comply with applicable Australian state or territory requirements relating to exhaust noise and vehicle modifications.

FAQ

Is this product currently available?
Availability and lead times can vary. Please check availability and current lead time before ordering.

Does WILD005 suit the Suzuki Sierra SJ413?
Yes. WILD005 is designed for applicable leaf-spring SJ413 1.3L 4WD models fitted with the G13A or G13BA engine.

Does WILD005 suit the SJ70?
Yes. The SJ70 is included in the WILD005 1.3L leaf-spring Sierra application.

Will WILD005 fit the coil-spring Sierra?
No. WILD005 will not fit the coil-spring SJ80. Use Wildcat WILD712 for the coil-spring application.

Does the exhaust need modification?
Yes. The current Genie/Wildcat application information states that welding is required to connect WILD005 to the exhaust system.

What gasket suits WILD005?
The listed header gasket is RBG005S.

Can I pick up from the store?
Yes. Pick up is available but must be pre-arranged before collection.

How much is freight?
Freight varies depending on your delivery location and where stock is available. Please contact us for freight charges before ordering. Where possible, we can arrange dispatch from the nearest available product location to help reduce freight costs and delivery times.

Do you ship to the USA?
Yes. Best Mufflers regularly ships exhaust systems and exhaust parts to customers throughout the United States.

Please note that import duties, tariffs, taxes, and customs clearance fees are not included in the product or shipping price. Once your order is processed and the applicable charges are calculated, we will send you a secure payment link to finalise the import duties and tariff charges before dispatch.

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