Pacemaker Headers PH5039 – Holden Commodore VS 3.8L V6 Ecotec

Pacemaker Headers PH5039 are designed for selected Holden Commodore VS 3.8L V6 Ecotec applications and offer a substantial improvement over the factory exhaust manifolds. With Pacemaker’s proven tuned-length design, these headers are built to improve exhaust scavenging, reduce backpressure, and help deliver stronger low-to-mid range torque with improved throttle response.

Whether you are replacing tired factory manifolds or upgrading a street-driven VS Commodore, PH5039 headers are a quality Australian-made option. Their mandrel-bent 1.50" primary pipes and 2.00" outlets are sized to suit the flow demands of the 3.8L Ecotec V6 while maintaining good drivability and performance.

Features

• Tuned-length 3-into-1 design
• Built for street performance applications
• 1.50" primary pipes
• No secondary pipes
• 2.00" outlets
• Australian made Pacemaker quality
• Mandrel-bent tube construction
• Optional ceramic coating available under PHC60

Fitment Notes

• Suits selected Holden Commodore VS 3.8L V6 Ecotec models
• Fits manual transmission models with build date up to 07/1996
• For Getrag 5-speed models built after 07/1996, the original Y-branch will require modification
• Will fit vehicles with variable ratio power steering
• Will not fit automatic Series 3 Utes
• Will not fit Statesman models with full-circle bell housing
• Please confirm vehicle build date, transmission type, and underbody configuration before ordering
• For vehicles manufactured from 1986 onward: Verify emissions and registration compliance in your state

What’s Included

• 1 x Pacemaker header set PH5039
• Flanges welded to header outlets
• Installation hardware only if supplied by Pacemaker at time of packaging
• Gaskets not included unless otherwise stated – gasket set available separately as DSF083

Recommended With

• DSF083 gasket set
• PHC60 ceramic coating option
• Suitable exhaust modifications where required for post-07/1996 Getrag manual applications

Installation Tips

To help avoid scratching the headers or engine bay during installation, wrap the headers in cling wrap before lowering them into position. Apply several layers for protection, trim around the mounting flanges, loosely install a few bolts, then remove the remaining wrap before final tightening.

What is the difference between Headers and Extractors?

In Australia, performance exhaust manifolds were traditionally called extractors, while in the United States they were more commonly called headers. Today, both terms are widely used to describe tuned exhaust manifolds designed to improve exhaust flow and engine performance.

Frequently Asked Questions

Q: Do these headers fit all VS Commodore V6 models?
A: No. Fitment depends on build date, transmission type, and vehicle configuration. Please check the fitment notes carefully, especially for post-07/1996 Getrag manual vehicles, automatic Series 3 Utes, and Statesman models with full-circle bell housing.

Q: Are gaskets included?
A: Gaskets are available separately as DSF083. Unless otherwise stated by the manufacturer, they should be purchased separately.

Q: Can these be ceramic coated?
A: Yes. Ceramic coating is available under PHC60.

Q: Will these improve performance on a stock 3.8L Ecotec?
A: Yes. Replacing the factory manifolds with tuned headers can improve exhaust flow, throttle response, and mid-range torque, particularly when matched with a free-flowing exhaust system.

Q: Do I need to modify the exhaust system?
A: Some applications may require exhaust modification, particularly Getrag 5-speed vehicles built after 07/1996, where the original Y-branch needs modification.

Customer Support

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