Ford Falcon FG XR8 GT 2008-2010 5.4L BOSS V8 Pacemaker Headers PH4019

Pacemaker PH4019 headers (extractors) are designed for Ford Falcon FG XR8 and FPV GT models fitted with the naturally aspirated 5.4L 4-valve BOSS Quad Cam V8 engine.

PH4019 uses Pacemaker's Tri-Y design with 44mm (1¾") primary pipes, 51mm (2") secondary pipes and 63mm (2½") outlets. The Tri-Y configuration is designed to improve exhaust-gas scavenging and flow while providing strong usable torque and throttle response for street and performance applications.

Please check availability and current lead time before ordering.

Key Features

• Designed for Ford Falcon FG XR8 and FPV GT 5.4L BOSS V8 applications
• Pacemaker Tri-Y design
• 44mm (1¾") primary pipes
• 51mm (2") secondary pipes
• 63mm (2½") outlets
• Mandrel-bent pipework
• Designed to improve exhaust flow and scavenging
• Designed to improve torque, throttle response and engine performance
• Australian manufactured Pacemaker performance headers

Construction

Pacemaker PH4019 headers use mandrel-bent pipework and a vehicle-specific Tri-Y configuration developed for the Ford Falcon FG 5.4L 4-valve BOSS V8 application.

The standard headers are supplied in Pacemaker's protective finish. Ceramic coating is also available separately for customers wanting additional heat management and corrosion protection.

Additional Options

• Ceramic Coating: Available separately – please contact us for current coating options, pricing and lead time
• Header Gaskets: Contact us to confirm the current gasket supplied or recommended for PH4019
• CAT4018-100: Matching Pacemaker high-flow catalytic converter pair available separately
• Matching performance exhaust system components – available separately
• Professional fitting service available – contact Best Mufflers to arrange installation

Vehicle Fitment

• Make: Ford
• Model: Falcon / FPV
• Series: FG
• Years: 2008-2010
• Models: XR8 / GT
• Engine: BOSS Quad Cam V8
• Engine Capacity: 5.4L
• Cylinder Heads: 4-Valve
• Aspiration: Naturally Aspirated
• Fuel: Petrol

Header Specifications

• Part Number: PH4019L/R
• Design: Tri-Y
• Primary Pipe: 44mm (1¾")
• Secondary Pipe: 51mm (2")
• Outlet: 63mm (2½")

Fitment Notes

• Designed for Ford Falcon FG XR8 and FPV GT models fitted with the naturally aspirated 5.4L 4-valve BOSS Quad Cam V8 engine.
• Not intended for the later supercharged 5.0L Coyote/BOSS engine application.
• Compatible with the applicable CAT4018-100 high-flow catalytic converter assemblies.
• Confirm engine and vehicle configuration before ordering where modifications or engine conversions have been carried out.
• Protect painted or ceramic-coated surfaces during trial fitting and installation.
• Check engine mounts before installation, as worn or collapsed mounts can alter engine position and header clearance.
• Check clearance around the starter motor, steering, transmission, wiring and surrounding components during installation.
• Clearance may vary where engine, steering, suspension or exhaust components have been modified.
• Ensure oxygen sensors, catalytic converters and other required emissions-control equipment are correctly retained.
• Professional installation is recommended.

What's Included

• Pacemaker PH4019L left-hand header assembly
• Pacemaker PH4019R right-hand header assembly

Gaskets, bolts, outlet flanges and other installation hardware should not be assumed included unless specifically confirmed with the current PH4019 package supplied.

Recommended With

• CAT4018-100: Pacemaker high-flow catalytic converter pair
• Correct header gaskets – contact us to confirm the current gasket requirement
• Matching performance exhaust system components

Why Good Headers & Exhaust Systems Matter

At 4,000 rpm, the 5.4L BOSS V8 theoretically draws approximately 10,800 litres of intake air per minute at 100% volumetric efficiency and expels around 32,400 litres of hot exhaust gas per minute at approximately 600°C.

Actual airflow varies with RPM, engine load, volumetric efficiency, intake restriction, camshaft specification and engine condition. These figures are theoretical values intended to illustrate the substantial volume of gas that must pass through the exhaust system at higher engine speeds.

A well-designed header and exhaust system helps manage this high gas flow efficiently, reducing restriction and improving exhaust scavenging, torque, throttle response and engine performance.

Installation Tips

• Apply penetrating lubricant to manifold studs, bolts and exhaust fasteners before removal.
• Remove all traces of the old manifold gaskets and inspect the cylinder-head sealing surfaces.
• Confirm the correct header gasket before installation.
• Trial-fit both header assemblies and check all clearances before fully tightening the mounting hardware.
• Protect painted or ceramic-coated surfaces during trial fitting and installation.
• Check clearance around the steering, engine mounts, transmission, starter motor, wiring and surrounding components.
• Ensure oxygen sensors, catalytic converters and other required emissions-control equipment are correctly retained.
• Keep oxygen-sensor wiring and other wiring clear of the headers and other hot exhaust components.
• Check all exhaust connections for leaks after installation.
• Inspect header mounting hardware after the initial heat cycles.

Warranty & Compliance

Pacemaker PH4019 headers are covered against manufacturing defects subject to Pacemaker's current warranty terms and conditions.

The vehicle's catalytic converters, oxygen sensors and other emissions-control equipment must remain correctly installed and operational where required. Check applicable state or territory requirements covering exhaust modifications, emissions, vehicle noise and roadworthiness.

FAQ

Which Ford Falcon does PH4019 suit?
PH4019 is designed for Ford Falcon FG XR8 and FPV GT models fitted with the naturally aspirated 5.4L 4-valve BOSS Quad Cam V8 engine.

What type of header is PH4019?
PH4019 is Pacemaker's Tri-Y header for the FG 5.4L BOSS V8 application.

What size are the PH4019 header pipes?
PH4019 uses 44mm (1¾") primary pipes, 51mm (2") secondary pipes and 63mm (2½") outlets.

What is the difference between PH4019 and PH4007?
Both suit the FG 5.4L 4-valve BOSS V8, but use different header configurations. PH4019 is a Tri-Y design with 44mm primaries, 51mm secondaries and 63mm outlets, while PH4007 is Pacemaker's TUNED design with 44mm primaries and 63mm outlets.

What is the difference between PH4019 and PH4009?
PH4019 is the Tri-Y configuration with 44mm primaries, 51mm secondaries and 63mm outlets. PH4009 is the larger TUNED Competition Header with 48mm (1⅞") primaries and 76mm (3") outlets.

Will PH4019 fit the later supercharged 5.0L FG XR8?
No. PH4019 is for the naturally aspirated 5.4L 4-valve BOSS V8. The later supercharged 5.0L application uses a different Pacemaker header.

Which header gaskets are recommended?
Please contact us to confirm the current gasket requirement for PH4019 before ordering.

Are high-flow catalytic converters available?
Yes. CAT4018-100 high-flow catalytic converter assemblies are available for the applicable PH4019 installation.

Can PH4019 headers be ceramic coated?
Yes. Ceramic coating is available as an optional upgrade. Please contact us for current coating options, pricing and lead time.

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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