Genie Headers GEN090E – Holden EH HD HR HK HG HT HQ HJ HX HZ Six-Cylinder (Pre-EGR)

Genie GEN090E headers are built for early Holden six-cylinder engines across the EH, HD, HR, HK, HG, HT and HQ series. Featuring an interference-style design, these extractors provide improved exhaust scavenging, better throttle response and noticeable gains in low-to-mid range torque. Perfect for classic Holden street cars, restorations and cruiser builds.

Key Features

• Interference design for balanced street performance
• Australian-made Genie quality since 1966
• Mandrel-bent pipework for smooth exhaust flow
• Designed for non-EGR six-cylinder Holden engines
• Direct bolt-on fitment

Technical Specifications

• Primary Pipes: 38mm [1.50"]
• Secondary Pipes: 45mm [1.75"]
• Outlet Size: 57mm [2.25"]
• Material: Mild steel, mandrel bent
• Gasket: Contact us for availability

Engine Airflow (Verified)

On average, a Holden 202 draws ~3,360 L of air per minute and expels ~10,080 L per minute at 4000 rpm [@600 °C].
On average, a Holden 186 draws ~3,094 L of air per minute and expels ~9,282 L per minute at 4000 rpm [@600 °C].
On average, a Holden 179 draws ~2,975 L of air per minute and expels ~8,925 L per minute at 4000 rpm [@600 °C].
On average, a Holden 161 draws ~2,674 L of air per minute and expels ~8,022 L per minute at 4000 rpm [@600 °C].

Fitment Notes

• Will not fit Powerglide automatic
• Check availability before ordering (manufactured in batches)
• Suitable for pre-EGR Holden six-cylinder engines

Installation Tips

Lubricate bolts and threads with WD-40 or similar for easier removal and installation. Check engine mounts and steering clearance before tightening.

What’s Included

• 1 × Genie Headers GEN090E Extractor Set

Recommended With

• Gasket: See product code "DSF002" 

Customer Support

Need help choosing the correct Genie Headers? Contact us:

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87A Planthurst Road, Carlton NSW 2218, Australia
Exhaust Systems Since 1983