Pacemaker Headers PH4008 – Ford Falcon BA BF XR8 & GT 5.4L 4V Boss V8 2002–2008

Pacemaker PH4008 headers (extractors) are performance tuned-length headers engineered for Ford Falcon BA and BF XR8 and GT models fitted with the 5.4L 4V Boss V8 engine from 2002–2008. Their tuned-length design and mandrel-bent pipework help improve exhaust gas flow and scavenging compared with restrictive factory exhaust manifolds.

Featuring 45mm primary pipes and 63mm flanged outlets, PH4008 headers provide increased exhaust flow capacity to help improve torque, sharpen throttle response and support overall engine performance. They are well suited to street performance vehicles, modified Boss V8 engines, track use and weekend cruisers.

Key Features

• Tuned-length design for improved exhaust flow, scavenging and performance
• Mandrel-bent 45mm primary pipes
• Large 63mm flanged outlets
• Mandrel-bent pipework maintains consistent internal diameter through bends
• Thick machined flanges for strength, durability and reliable sealing
• Smooth collectors designed to improve exhaust scavenging and gas flow
• Designed to improve torque, throttle response and overall engine performance

Vehicle Fitment

• Make: Ford
• Model: Falcon BA / BF
• Variants: XR8 / GT
• Years: 2002–2008
• Engine: 5.4L Boss V8
• Cylinder Heads: 4-Valve

Construction

• High-quality steel tubing for strength and long service life
• Mandrel-bent pipework for consistent exhaust flow
• Precision welded construction for strength and accurate fitment
• Pacemaker Blue heat-resistant finish rated to approximately 800°C
• Australian manufactured Pacemaker performance headers

Additional Options

• Ceramic Coating: See product code "PHC30" for improved heat management and corrosion resistance
• Header Gasket: See product code "DSF813"

Fitment Notes

• Designed for Ford Falcon BA and BF XR8 and GT models fitted with the 5.4L 4V Boss V8 from 2002–2008.
• Confirm engine configuration before ordering where the vehicle has been modified.
• Protect painted surfaces and wrap the headers during trial fitting to prevent damage to the coating.
• Check starter motor, steering, engine mounts, wiring and surrounding components for adequate clearance during installation.
• Clearance may vary where non-original engine mounts, steering components or other aftermarket parts have been fitted.
• Verify emissions and registration compliance in your state.
• Professional installation is recommended.

What’s Included

• 1 x Pacemaker PH4008L left-hand header assembly
• 1 x Pacemaker PH4008R right-hand header assembly
• 16 x header bolts
• Outlet flanges for connection to the exhaust system

Recommended With

• High-Flow Catalytic Converters: See product code "CAT4018"
• Header Gasket Set: See product code "DSF813"
• Matching performance exhaust system and intermediate pipes – available separately

Why Good Headers & Exhaust Systems Matter

• At 5,000 rpm, the 5.4L Boss V8 draws in approximately 13,500 litres of intake air per minute and expels around 40,500 litres of exhaust gas per minute at approximately 600°C.

Warranty & Compliance

• Backed by Pacemaker's 2-year manufacturer warranty
• Warranty applies according to Pacemaker's current manufacturer terms and conditions
• Verify emissions and registration compliance in your state.
• Installation should provide adequate clearance from wiring, hoses and other heat-sensitive components.

Frequently Asked Questions

Will PH4008 headers fit all BA and BF XR8 and GT models?
PH4008 headers are designed for Ford Falcon BA and BF XR8 and GT applications fitted with the 5.4L 4V Boss V8. If your vehicle has been modified or has had an engine conversion, confirm the configuration before ordering.

What size are the PH4008 header pipes?
PH4008 headers use 45mm mandrel-bent primary pipes with 63mm flanged outlets.

Do PH4008 headers improve performance?
The tuned-length design reduces exhaust restriction and improves scavenging, helping improve exhaust flow, usable torque and throttle response. Results will vary depending on the engine tune and other exhaust modifications.

Are header gaskets included?
The cylinder-head-to-header gaskets are not included unless specifically selected or stated otherwise. The recommended gasket set is DSF813.

Are high-flow catalytic converters available?
Yes. Pacemaker high-flow catalytic converters are available separately under product code CAT4018.

Can these headers be ceramic coated?
Yes. Ceramic coating is available separately under product code PHC30 for improved heat management, appearance and corrosion resistance.

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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