Pacemaker Catalytic Converters CAT4018-100LR – Ford Falcon BA BF 5.4L Boss V8

Pacemaker CAT4018-100LR high-flow catalytic converters are designed for Ford Falcon BA and BF models fitted with the 5.4L Boss V8 when using Pacemaker PH4008 or PH4018 headers. Supplied as a left and right pair, these direct-fit catalytic converters provide the correct connection between the Pacemaker headers and exhaust system.

Each converter features a high-flow 100 CPI metallic substrate with 3.0" (76mm) inlet and 2.50" outlet . The low-cell-density metallic design provides increased exhaust gas flow capacity for performance applications while retaining catalytic converter functionality.

Key Features

• Designed specifically to fit Pacemaker PH4009 headers
• Supplied as a left and right catalytic converter pair
• High-flow 100 CPI metallic substrates
• 3.0" (76mm) inlet
• 2.5" (63mm) outlet
• Direct-fit design for compatible Pacemaker header applications
• Under-car mounting position
• Gaskets included
• Designed for high-performance street applications

Vehicle Fitment

• Make: Ford
• Model: Falcon BA / BF
• Engine: 5.4L Boss V8
• Header Compatibility: Pacemaker headers PH4009
• Position: Under car – left and right

Specifications

• Part Number: CAT4009LR
• Quantity: 2 – left and right pair
• Substrate: Metallic
• Cell Density: 100 CPI
• Inlet Diameter: 3.0" (76mm)
• Outlet Diameter: 2.5" (63mm)
• Fitment: Direct fit to compatible Pacemaker headers

What Does 100 CPI Mean?

CPI means Cells Per Square Inch and refers to the density of the catalytic converter substrate. A 100 CPI metallic substrate has larger gas passages than a conventional higher-cell-density substrate, helping reduce exhaust restriction and increase exhaust flow capacity. This makes 100 CPI metallic converters particularly suitable for performance exhaust applications.

Fitment Notes

• Designed to fit PH4009 Pacemaker headers.
• Confirm the Pacemaker header part number fitted to the vehicle before ordering.
• These converters are intended as part of the compatible Pacemaker header and exhaust configuration and should not be assumed to directly replace the original factory catalytic converters.
• Check all exhaust flanges, oxygen sensor wiring and surrounding components for adequate clearance during installation.
• Verify emissions and registration compliance in your state.
• Professional installation is recommended.

What’s Included

• 1 x Pacemaker left-hand high-flow catalytic converter
• 1 x Pacemaker right-hand high-flow catalytic converter
• Required exhaust connection gaskets

Recommended With

• Pacemaker PH4009 Headers – Ford Falcon BA/BF XR8 & GT 5.4L 4V Boss V8
• Matching performance exhaust system – available separately

Why Good Exhaust Flow Matters

• 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.

Important – Catalytic Converter Failure

Catalytic converters are designed to operate within a specific temperature and air/fuel range. Engine misfires, excessively rich fuel mixtures, oil consumption, coolant entering the combustion chamber, poor-quality fuel and engine overheating can damage or prematurely destroy a catalytic converter. If replacing a failed converter, the cause of the original failure should be diagnosed and rectified before the new catalytic converters are installed.

Warranty & Compliance

• Warranty applies according to Pacemaker's current manufacturer terms and conditions.
• Warranty does not normally cover catalytic converter failure caused by an underlying engine, ignition, fuel or contamination problem.
• Verify emissions and registration compliance in your state before installation.

Frequently Asked Questions

What headers do CAT4009-100LR catalytic converters fit?
They are designed to fit Pacemaker PH4009 headers on compatible Ford Falcon BA/BF 5.4L Boss V8 applications.

Does CAT4009-100LR include both catalytic converters?
Yes. CAT4009-100LR are supplied as a left and right pair.

What size are the inlet and outlet pipes?
The catalytic converters use 3.00" (76mm) inlet and 2.5" (63mm) outlet connections.

What type of substrate is used?
These catalytic converters use a high-flow 100 CPI metallic substrate designed to provide excellent exhaust gas flow for performance applications.

Are gaskets included?
Yes. Exhaust connection gaskets are included with the catalytic converter assemblies.

Why do catalytic converters fail?
Premature failure can be caused by engine misfires, an excessively rich fuel mixture, oil burning, coolant contamination, overheating and other engine faults. The cause of the original failure should always be diagnosed before installing replacement catalytic converters.

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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