Hurricane Headers HU074STM – Holden Gemini TX TC TD TE TG 1.6L 1.8L 1975–1985

Hurricane HU074STM exhaust headers (extractors) are designed for selected Holden Gemini TX, TC, TD, TE and TG models from 1975 to 1985 fitted with compatible 1.6L and 1.8L engines.

Manufactured in Australia using mandrel-bent pipework, HU074STM headers replace the restrictive factory exhaust manifold and are designed to improve exhaust gas flow, throttle response and engine performance.

The headers use 1.50" primary pipes feeding into a 2.00" collector outlet. Installation is a cut-and-weld application, allowing the header outlet to be connected to the vehicle's existing or upgraded exhaust system.

Key Features

• Australian made Hurricane performance headers
• Designed for selected Holden Gemini TX / TC / TD / TE / TG models
• Suitable for compatible 1.6L and 1.8L engines
• 1.50" primary pipes
• 2.00" collector outlet
• Mandrel-bent pipework for smooth exhaust gas flow
• Designed to improve exhaust flow, throttle response and engine performance
• Cut-and-weld installation

Vehicle Fitment

• Make: Holden
• Model: Gemini
• Series: TX / TC / TD / TE / TG
• Year Range: 1975–1985
• Engine Capacity: 1.6L / 1.8L – selected applications

Header Specifications

• Brand: Hurricane
• Part Number: HU074STM
• Primary Pipe Size: 1.50"
• Secondary Pipe Size: N/A
• Outlet Size: 2.00"
• Construction: Mandrel-bent pipework
• Installation: Cut & Weld
• Manufacture: Australian Made

Construction

Hurricane Headers use carefully formed pipework and collector designs to provide a smooth transition for exhaust gases entering the collector. Selected Hurricane header designs also incorporate merge-emulation technology to assist exhaust gas transition and scavenging through the collector.

Installation Information

HU074STM is a cut-and-weld application. The existing exhaust system will need to be cut and the header outlet professionally connected to the exhaust system. This also allows the installer to accommodate vehicles that have previously had their exhaust system modified or replaced.

Fitment Notes

What's Included

• 1 x Hurricane HU074STM header / extractor assembly
• Outlet connection components as supplied by Hurricane

Recommended With

• Suitable exhaust manifold/header gasket where required
• High-temperature exhaust gasket sealant
• 2.00" exhaust components where upgrading the downstream exhaust system
• Replacement manifold studs and nuts where required

Installation Tips

• Lubricate manifold studs, nuts and exhaust fasteners with WD-40 or a similar penetrating lubricant before removal.
• Remove all traces of the old manifold gasket before installing the headers.
• Inspect the cylinder-head sealing surface, studs and threads before installation.
• Use a suitable new gasket and high-temperature exhaust sealant where recommended.
• Complete the cut-and-weld exhaust connection only after checking header and exhaust alignment.
• Check clearance around steering, transmission, starter motor, suspension and bodywork before final tightening.
• Re-tighten the header/manifold bolts after approximately 500km to help maintain a reliable gasket seal.

Why Good Headers & Exhaust Systems Matter

A well-designed header and exhaust system reduces unnecessary restriction as exhaust gases leave the engine, helping improve cylinder scavenging, exhaust flow, throttle response and usable engine performance.

Warranty & Compliance

Frequently Asked Questions

Which Holden Gemini models does HU074STM suit?
HU074STM is designed for selected Holden Gemini TX, TC, TD, TE and TG models from 1975 to 1985 fitted with compatible 1.6L or 1.8L engines.

What size are the Hurricane HU074STM headers?
The headers use 1.50" primary pipes with a 2.00" collector outlet.

Does HU074STM bolt directly to the existing exhaust?
No. HU074STM is a cut-and-weld application. The collector outlet must be connected to the existing or upgraded exhaust system by cutting and welding.

Can these headers be used with a larger exhaust system?
Yes. The 2.00" collector outlet can be incorporated into a compatible upgraded exhaust system. Professional fabrication is recommended to ensure correct alignment and clearance.

Are these headers Australian made?
Yes. HU074STM Hurricane Headers are Australian made.

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.

Customer Support

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