Holden Commodore VT VX VY VZ V8 Pacemaker High Flow Cats CAT5361-300L/R

Pacemaker CAT5361-300L/R High Flow Catalytic Converters are designed to suit Pacemaker PH5361 headers on selected Holden Commodore VT, VX, VU, VY and VZ V8 applications using a 3" performance exhaust system.

CAT5361-300L/R features a 3" (76mm) inlet and 3" (76mm) outlet with a 100-cell metallic substrate, providing a high-flow catalytic converter solution for PH5361 installations using a 3" downstream exhaust.

The supplied product information specifies a concave inlet design intended to increase effective inlet surface area and improve exhaust gas distribution across the catalytic converter substrate.

IMPORTANT – CAT5361-300L/R is the 3" exhaust-system version. For a 2½" exhaust system, use Pacemaker CAT5361-100L/R.

Please check availability and current lead time before ordering.

Key Features

• Designed to suit Pacemaker PH5361 headers
• Selected Holden Commodore VT-VZ V8 applications
• 3" (76mm) inlet
• 3" (76mm) outlet
• 100-cell metallic substrate
• High-flow performance design
• Concave inlet design for improved exhaust gas distribution
• Left and right catalytic converter assemblies
• Designed for connection to a 3" performance exhaust system

Construction

Pacemaker CAT5361-300L/R uses a 100-cell metallic catalytic converter substrate designed for high-flow performance exhaust applications.

The 3" inlet and 3" outlet provide a full 76mm connection through the catalytic converter assembly for use with compatible PH5361 header and 3" exhaust configurations.

The supplied product information specifies a concave inlet designed to distribute exhaust gas across the catalytic converter substrate.

Vehicle Fitment

• Make: Holden / HSV
• Models: Commodore / Ute / applicable Statesman, Caprice and HSV variants
• Series: VT / VX / VU / VY / VZ and corresponding WH / WK / WL applications
• Engine: Selected LS-series V8 applications
• Header Application: Pacemaker PH5361
• Exhaust Connection: 3" performance exhaust system

Important: Fitment is determined by the Pacemaker header and exhaust configuration rather than vehicle model alone. Confirm the exact header part number and downstream exhaust size before ordering.

Catalytic Converter Specifications

• Part Number: CAT5361-300L / CAT5361-300R
• Brand: Pacemaker
• Position: Left and Right
• Inlet: 3" (76mm)
• Outlet: 3" (76mm)
• Substrate: Metallic
• Cell Density: 100 CPI
• Application: High Flow Performance

CAT5361-300 vs CAT5361-100

Pacemaker offers two high-flow catalytic converter configurations for PH5361 depending on the diameter of the downstream exhaust system.

CAT5361-300L/R: Designed for a 3" exhaust system.

CAT5361-100L/R: Designed for a 2½" exhaust system.

Both configurations are intended for PH5361 header installations, but the correct catalytic converter should be selected to match the diameter of the downstream exhaust system.

Fitment Notes

PH5361: CAT5361-300L/R is designed for Pacemaker PH5361 headers when connecting to an appropriate 3" performance exhaust system.

PH5362: Do not assume CAT5361-300L/R is a direct-fit catalytic converter for PH5362. PH5362 uses a larger 90mm (3½") collector outlet. Please contact Best Mufflers if catalytic converters are required for a PH5362 installation.

3" Exhaust: Use CAT5361-300L/R when the downstream exhaust system requires a 3" connection.

2½" Exhaust: For a 2½" downstream exhaust system, use CAT5361-100L/R.

Many VT-VZ V8 vehicles have modified headers, catalytic converters and exhaust systems. Always confirm the existing exhaust configuration before ordering.

Professional installation is recommended.

What's Included

• 1 x Pacemaker CAT5361-300L left-side catalytic converter assembly
• 1 x Pacemaker CAT5361-300R right-side catalytic converter assembly

Gaskets, bolts and other installation components should not be assumed to be included unless specifically confirmed with the current kit before ordering.

Recommended With

• Pacemaker PH5361 headers
• Compatible 3" performance exhaust system
• DAPG106 gasket where applicable
• GMG063-76 gasket where applicable

Why High Flow Catalytic Converters Matter

A catalytic converter is an important part of the vehicle's emissions system but also presents resistance to exhaust gas flow. In a performance application, sufficient converter flow capacity is important when higher-flowing headers and exhaust systems are fitted.

The 100-cell metallic substrate used in CAT5361-300L/R provides a high-flow configuration for performance exhaust applications, while the 3" inlet and 3" outlet maintain a 76mm connection through the catalytic converter assembly.

Installation Tips

Before installation, confirm the vehicle is fitted with Pacemaker PH5361 headers and that the downstream exhaust system requires a 3" connection.

Inspect oxygen sensors, wiring, exhaust mounts, flanges and sealing surfaces before installation.

If replacing catalytic converters following a previous converter failure, identify and correct the underlying cause before installing the replacements. Engine misfire, excessive fuel, oil consumption or excessive exhaust temperature can damage a catalytic converter.

Professional installation is recommended.

Warranty & Compliance

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

Catalytic converters and exhaust modifications must comply with applicable Australian state or territory emissions, noise and vehicle modification requirements.

All oxygen sensors and other emissions-control equipment required for the vehicle must remain correctly installed and operational.

FAQ

What headers do CAT5361-300L/R catalytic converters suit?
CAT5361-300L/R is designed to suit Pacemaker PH5361 headers with an appropriate 3" downstream exhaust configuration.

What size are CAT5361-300L/R?
They have a 3" (76mm) inlet and 3" (76mm) outlet.

Are these 100-cell catalytic converters?
Yes. The supplied specification identifies CAT5361-300L/R as using a 100-cell metallic substrate.

What is the difference between CAT5361-300 and CAT5361-100?
CAT5361-300L/R is for a 3" exhaust configuration, while CAT5361-100L/R is for a 2½" exhaust configuration.

Do these catalytic converters suit PH5362?
PH5362 uses a larger 90mm (3½") collector outlet, so CAT5361-300L/R should not be assumed to connect directly to PH5362. Please contact Best Mufflers to confirm the required catalytic converter arrangement.

Are both catalytic converters included?
Yes. This listing is for the matched pair consisting of CAT5361-300L left and CAT5361-300R right.

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

For phone orders, advice, or part enquiries – contact us: