Wildcat Headers WILD289 – Holden Jackaroo / Isuzu 3.5L V6 1998–2007

Wildcat Headers WILD289 are designed to suit Holden Jackaroo / Isuzu vehicles fitted with the 3.5L V6 6VE1 engine from 1998 to 2007. These Australian-made extractors are built as a direct-fit performance upgrade, helping improve exhaust gas flow over restrictive factory manifolds. For owners wanting better drivability, improved throttle response, and a stronger exhaust note, WILD289 offers a practical and proven street-performance solution.

Featuring a tuned length design with 1.75" primary pipes and 2.25" outlets, these headers are well suited to standard and mildly modified engines. On a 3.5L four-stroke V6 at 4,000 rpm, the engine processes around 6,930 litres of intake air per minute. Once exhaust gas expansion is considered, the system may be moving approximately 11,780 litres per minute, so improving exhaust efficiency can help reduce backpressure and support better cylinder scavenging.

These headers are ideal for replacing worn or cracked factory manifolds while also delivering the benefits of a freer-flowing exhaust path. The result is typically better engine response, improved torque characteristics in the usable rev range, and a cleaner path for the rest of the exhaust system. Base pipe not included.

Features

• Australian made Wildcat Headers
• Direct-fit application for Holden Jackaroo / Isuzu 3.5L V6 6VE1
• Tuned length design for street performance use
• 1.75" primary pipes
• 2.25" outlet size
• Improves exhaust flow, drivability, and throttle response
• Great replacement for ageing factory exhaust manifolds

Vehicle Fitment

Holden Jackaroo / Isuzu
Engine: 3.5L V6 6VE1
Years: 1998–2007

Important Notes

• Gaskets required: RBG267
• Base pipe not included
• Lubricate threads with WD40 or similar during removal and installation
• Verify emissions and registration compliance in your state

Recommended With

• RBG267 gasket set
• Matching base pipe / exhaust connection
• Fresh mounting hardware for easier installation

Frequently Asked Questions

Q: Will these fit all Holden Jackaroo / Isuzu 3.5L V6 models from 1998 to 2007?
A: They are designed for Jackaroo / Isuzu applications fitted with the 3.5L V6 6VE1 engine in that model range. Check your engine code and existing exhaust layout before ordering.

Q: Are these headers tuned length or tri-y?
A: WILD289 uses a tuned length design intended for street performance applications.

Q: Are secondary pipes used in this design?
A: No, this header listing shows a single primary-to-outlet layout with no secondary pipe section specified.

Q: Is this a direct-fit item?
A: Yes, these are listed as a direct-fit header set for the stated application, though the base pipe is not included.

Q: Will these fit Left Hand Drive Isuzu models ?
A: Unsure if left side header will clear steering shaft 

Q: Why upgrade to headers on the 6VE1 engine?
A: Headers can help the 3.5L V6 breathe more efficiently by improving exhaust flow, reducing restriction, and supporting better throttle response and usable torque.

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