Ford Falcon XR XT XW XY 351 Windsor V8 Pacemaker Headers PH4035

Pacemaker PH4035 headers (extractors) are designed for Ford Falcon XR, XT, XW and XY models fitted with the 351 Windsor V8. PH4035 uses Pacemaker's TRI-Y design with 41mm (1⅝") primary pipes, 51mm (2") secondary pipes and 57mm (2¼") outlets.

The TRI-Y configuration is designed to provide efficient exhaust gas flow and scavenging across a broad engine speed range, making PH4035 well suited to classic Falcon street cars, restorations and performance applications where improved torque, throttle response and engine performance are required.

IMPORTANT – PH4035 will not fit GT40/GT40P-style cylinder heads as fitted to the AU II 302 Windsor due to the different spark-plug angle.

Not sure which headers to use for your Windsor engine? Read our Ford Windsor header guide here.

Please check availability and current lead time before ordering.

Key Features

• Designed for Ford Falcon XR, XT, XW and XY 351 Windsor V8 applications
• Pacemaker TRI-Y design
• 41mm (1⅝") primary pipes
• 51mm (2") secondary pipes
• 57mm (2¼") outlets
• Manual and automatic transmission compatible
• Power steering compatible
• Air conditioning compatible
• Designed to improve exhaust flow, torque, throttle response and engine performance

Construction

Pacemaker PH4035 headers use performance-oriented tubular construction with a TRI-Y configuration specifically designed for Ford Falcon 351 Windsor V8 applications.

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

Additional Options

• Ceramic Coating: Available separately – please contact us for current coating options, pricing and lead time
• DSF3: Recommended exhaust manifold/header gaskets – available separately
• Matching exhaust system components – available separately

Vehicle Fitment

• Make: Ford
• Model: Falcon
• Series: XR / XT / XW / XY
• Years: 1966-1972
• Engine: 351 Windsor V8
• Transmission: Manual / Automatic
• Power Steering: Yes
• Air Conditioning: Yes

Header Specifications

• Part Number: PH4035L/R
• Design: TRI-Y
• Primary Pipe: 41mm (1⅝")
• Secondary Pipe: 51mm (2")
• Outlet: 57mm (2¼")
• Power Steering: Yes
• Air Conditioning: Yes
• Oxygen Sensor: N/A
• EGR: N/A
• Recommended Gasket: DSF3
• Approximate Fitting Time: 3 hours

Fitment Notes

• Designed for Ford Falcon XR, XT, XW and XY models fitted with the 351 Windsor V8.
• Will not fit GT40/GT40P-style cylinder heads as fitted to the AU II 302 Windsor due to the different spark-plug angle.
• Suits manual and automatic transmission applications.
• Column-change automatic applications require linkage modification.
• Power steering compatible.
• Air conditioning compatible.
• Confirm engine, cylinder-head, transmission, engine-mount and steering configuration before ordering where the vehicle has been modified.
• Protect painted or ceramic-coated surfaces during trial fitting and installation.
• Check clearance around the steering, starter motor, engine mounts, transmission, spark plugs and surrounding components before fully tightening the headers.
• Professional installation is recommended.

What's Included

• Pacemaker PH4035L left-hand header assembly
• Pacemaker PH4035R right-hand header assembly

Gaskets, bolts and other installation hardware should not be assumed included unless specifically confirmed with the current PH4035 package supplied.

Recommended With

• DSF3: Exhaust manifold/header gaskets
• Suitable downstream exhaust connections to match the header outlets

Why Good Headers & Exhaust Systems Matter

At 4,000 rpm, a 351ci (5.8L) Windsor V8 theoretically draws approximately 11,600 litres of intake air per minute at 100% volumetric efficiency and expels around 34,800 litres of hot exhaust gas per minute at approximately 600°C.

Actual airflow varies with RPM, engine load, volumetric efficiency, 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

• Confirm the engine and cylinder-head combination before installation.
• Apply penetrating lubricant to existing exhaust fasteners before removal.
• Remove all traces of the old manifold gaskets and inspect the cylinder-head sealing surfaces.
• Fit new DSF3 exhaust manifold/header gaskets.
• Trial-fit both header assemblies and check all clearances before fully tightening the mounting hardware.
• Check clearance around the steering, starter motor, engine mounts, transmission, spark plugs and plug leads.
• Protect painted or ceramic-coated surfaces during trial fitting and installation.
• Check all exhaust connections for leaks after installation.
• Inspect header mounting hardware after the initial heat cycles.

Warranty & Compliance

Pacemaker PH4035 headers are covered against manufacturing defects subject to Pacemaker's current warranty terms and conditions.

Any modified engine or exhaust installation must comply with applicable state or territory requirements covering vehicle modifications, exhaust noise and roadworthiness.

FAQ

Which Ford Falcons do PH4035 headers suit?
This listing is for Ford Falcon XR, XT, XW and XY models fitted with the 351 Windsor V8.

What design are PH4035 headers?
Pacemaker specifies PH4035 as a TRI-Y design.

What size are the PH4035 header pipes?
PH4035 uses 41mm (1⅝") primary pipes, 51mm (2") secondary pipes and 57mm (2¼") outlets.

Will PH4035 fit GT40 or GT40P cylinder heads?
No. Pacemaker states that PH4035 will not fit the GT40-style cylinder heads fitted to the AU II 302 Windsor due to the different spark-plug angle.

Do PH4035 headers suit manual and automatic transmissions?
Yes. Pacemaker specifies PH4035 for both manual and automatic transmission applications.

Will PH4035 fit a column-change automatic?
Yes, but the column automatic linkage requires modification.

Do PH4035 headers suit power steering?
Yes. Pacemaker specifies PH4035 as power-steering compatible.

Do PH4035 headers suit air conditioning?
Yes. Pacemaker currently specifies PH4035 as air-conditioning compatible.

Which header gaskets are recommended?
Pacemaker currently specifies DSF3 exhaust manifold/header gaskets for PH4035.

Can PH4035 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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