Universal 2.5 Inch High Flow Catalytic Converter with O2 Sensor Port Stainless Steel Performance Cat

Universal 2.5 Inch High Flow Catalytic Converter features a durable 409L stainless steel housing, 400 CPSI honeycomb substrate, and built-in O2 sensor port.

Universal 2.5 Inch High Flow Catalytic Converter with O2 Sensor Port | Stainless Steel Performance Cat

High-Flow Exhaust Performance with Durable Stainless Steel Construction

Designed for automotive exhaust system replacement and retrofit applications, this Universal 2.5 Inch High Flow Catalytic Converter combines a durable 409L stainless steel housing with a 400 CPSI honeycomb substrate.

The 2.5-inch inlet and outlet provide a practical high-flow configuration for compatible exhaust systems. A built-in M18 × 1.5 O2 sensor port supports oxygen sensor installation and exhaust monitoring.

With ceramic or metallic honeycomb substrate options and compatibility with Euro 4, Euro 5, and OBDII requirements, this catalytic converter is suitable for automotive aftermarket suppliers, exhaust system distributors, repair shops, and vehicle retrofit projects.

1. Top Features Mechanics and Distributors Trust

High Flow Catalytic Converter Core with 400 CPSI Substrate

The internal 400 CPSI honeycomb substrate provides a large contact area between exhaust gases and the catalyst surface.

Its high-flow structure is designed to balance exhaust gas flow and emission treatment requirements, making it suitable for exhaust system replacement and upgrade applications.

Key advantages:

  • 400 CPSI high-flow design
  • Ceramic or metallic substrate options
  • Efficient exhaust gas contact
  • Suitable for retrofit and replacement applications

Durable 409L Stainless Steel Housing

The catalytic converter uses high-grade 409L stainless steel for the outer housing.

This material provides a practical combination of heat resistance, corrosion resistance, and structural durability for automotive exhaust applications.

The stainless steel construction also makes the unit suitable for long-term use in demanding exhaust environments.

Built-In O2 Sensor Port

The converter features an integrated:

M18 × 1.5 O2 Sensor Port

The pre-installed sensor port simplifies oxygen sensor integration with compatible exhaust systems.

It also helps suppliers provide a more complete replacement solution for applications that require an O2 sensor connection.

2.5-Inch Exhaust Connection

Both the inlet and outlet use a:

2.5 inch / 63.5 mm diameter

This configuration provides a straightforward option for compatible 2.5-inch exhaust systems.

Always confirm the vehicle exhaust dimensions and mounting configuration before installation.

2. Technical Specifications

ParameterDetail
Product NameExhaust Pipe Catalytic Converter
Product TypeEngine Exhaust System
Product CategoryHigh Flow Catalytic Converter
PositionFront
FitmentNon-Universal / Model Vehicle Application
Inlet Diameter2.5 inch / 63.5 mm
Outlet Diameter2.5 inch / 63.5 mm
Body MaterialHigh Grade 409L Stainless Steel
Substrate MaterialCeramic / Metallic Honeycomb
Cell Density400 CPSI High Flow
O2 Sensor PortBuilt-in M18 × 1.5 Thread
Emission StandardEuro 4 / Euro 5 / OBDII Compliant
OE Number1601787295547
ConditionNew
PurposeRetrofit / Upgrade
ApplicationAutomotive Exhaust System
Brand3waycatalyst
Warranty1 Year
Place of OriginShandong, China

3. Why Choose This High Flow Catalytic Converter?

Improved Exhaust Flow

The 400 CPSI honeycomb structure provides an efficient path for exhaust gases while maintaining a substantial catalyst surface area.

This makes the converter suitable for applications where exhaust flow and emission control both matter.

Reliable Stainless Steel Construction

The 409L stainless steel housing offers a durable solution for automotive exhaust systems.

It can handle the demanding conditions normally associated with exhaust components, including heat, vibration, and exposure to road environments.

Flexible Substrate Selection

The product supports both:

  • Ceramic honeycomb substrate
  • Metallic honeycomb substrate

Different substrate options allow buyers to select a configuration according to their vehicle application and project requirements.

Convenient O2 Sensor Integration

The built-in M18 × 1.5 sensor port provides a convenient connection point for compatible oxygen sensors.

This feature makes the product suitable for exhaust system retrofit and replacement projects where sensor integration is required.

4. Applications and Compatibility

Suitable Applications

This high flow catalytic converter can be used for compatible:

  • Diesel automotive exhaust systems
  • Exhaust replacement projects
  • Retrofit applications
  • Exhaust system upgrades
  • Automotive aftermarket repairs
  • Distributor and wholesale projects

Vehicle Compatibility

The supplied specification identifies the product as non-universal fitment and intended for model vehicle applications.

Before ordering, buyers should confirm:

  • Vehicle make and model
  • Engine configuration
  • OE number
  • Exhaust pipe diameter
  • Front-position requirements
  • O2 sensor location
  • Mounting configuration

5. Emission Control and Exhaust System Design

Euro 4 and Euro 5 Applications

The catalytic converter is specified as compatible with Euro 4 and Euro 5 emission requirements.

It is designed to work as part of a vehicle’s exhaust emission control system.

Actual emission performance depends on the vehicle, engine condition, fuel system, catalyst configuration, and installation conditions.

OBDII Compatibility

The product specification identifies the converter as OBDII compliant.

For replacement applications, buyers should verify the vehicle’s original emission system configuration and sensor requirements before installation.

6. Product Structure

409L Stainless Steel Shell

The outer shell provides structural protection for the internal catalyst substrate.

The 409L stainless steel construction offers a practical solution for automotive exhaust applications where thermal and environmental durability matter.

Honeycomb Catalyst Substrate

The internal honeycomb structure increases the available catalyst surface area.

Two substrate options are available:

Ceramic Honeycomb

  • Lightweight structure
  • Suitable for standard automotive applications
  • Cost-effective configuration

Metallic Honeycomb

  • High thermal conductivity
  • Strong mechanical structure
  • Suitable for applications requiring additional durability

7. Quality and Manufacturing

Fengxiang focuses on consistent manufacturing of automotive exhaust components for aftermarket and OEM-related applications.

Quality Control Focus

Production inspection can cover:

  • 409L stainless steel material
  • Housing dimensions
  • Weld quality
  • Inlet and outlet diameter
  • O2 sensor port dimensions
  • Honeycomb substrate
  • 400 CPSI cell density
  • Surface finish
  • Overall product condition

Each specification can be confirmed according to the requirements of the target vehicle application.

8. OEM, ODM and Customization Support

OEM Replacement

The listed OE number provides a reference for compatible replacement applications:

OE NO.: 1601787295547

Buyers should verify OE numbers against their vehicle information before placing an order.

Custom Exhaust Solutions

For distributors and automotive exhaust suppliers, Fengxiang can support customized requirements based on project specifications.

Potential customization areas include:

  • Product dimensions
  • Inlet and outlet diameter
  • Substrate type
  • Cell density
  • Sensor port configuration
  • Stainless steel material
  • Product labeling
  • Packaging

9. B2B Supply for Global Automotive Markets

This catalytic converter is suitable for customers purchasing automotive exhaust components in bulk.

Ideal Customers

  • Automotive parts distributors
  • Exhaust system wholesalers
  • Auto repair shops
  • Importers
  • Automotive aftermarket suppliers
  • Exhaust system manufacturers
  • Vehicle retrofit companies

Wholesale Advantages

Factory Supply

Direct manufacturing support for automotive exhaust system products.

Flexible Product Configuration

Ceramic and metallic substrate options are available.

OEM Reference Support

The OE number can help buyers identify compatible applications.

Global B2B Service

Suitable for international wholesale, distribution, and aftermarket projects.

10. Product Advantages at a Glance

FeatureProduct Advantage
2.5 Inch DiameterCompatible with suitable 2.5-inch exhaust systems
400 CPSIHigh-flow honeycomb structure
409L Stainless SteelDurable exhaust housing
O2 Sensor PortM18 × 1.5 integrated sensor connection
Ceramic / Metallic CoreFlexible substrate selection
Euro 4 / Euro 5Suitable for specified emission applications
OBDIIDesigned for compatible OBDII systems
Front PositionDesigned for front exhaust applications
Retrofit / UpgradeSuitable for replacement and upgrade projects
1-Year WarrantyProduct warranty support

11. Ordering and Fitment Information

Before purchasing, provide the following information to confirm compatibility:

Vehicle Information

  • Vehicle Make
  • Vehicle Model
  • Model Year
  • Engine Type
  • Fuel Type
  • OE Number

Exhaust Information

  • Inlet Diameter
  • Outlet Diameter
  • O2 Sensor Position
  • Mounting Location
  • Front or Rear Position

For this product, the listed specifications are:

  • Fuel Type: Diesel 
  • Position: Front 
  • Inlet/Outlet: 2.5 inch / 63.5 mm 
  •  O2 Sensor Port: M18 × 1.5

Confirming these details before purchase helps reduce fitment problems and unnecessary returns.

12. Why Choose 3waycatalyst?

Automotive Exhaust Manufacturing Experience

3waycatalyst focuses on automotive exhaust system products, including catalytic converters and related exhaust components.

Stable Material Selection

The product uses high-grade 409L stainless steel with ceramic or metallic honeycomb substrate options.

OEM & Aftermarket Support

The product supports replacement, retrofit, upgrade, and customized B2B applications.

Professional Technical Communication

Our team can help buyers confirm product specifications, fitment information, substrate options, and customization requirements before production.

Get a Quote for Your Catalytic Converter Project

Looking for a Universal 2.5 Inch High Flow Catalytic Converter with O2 Sensor Port for your aftermarket or wholesale business?

Contact 3waycatalyst for:

  • OEM replacement solutions
  • Bulk purchasing
  • Custom catalytic converter specifications
  • Ceramic or metallic substrate options
  • O2 sensor port customization
  • Wholesale pricing
  • Global shipping support

Send us your vehicle model, OE number, required quantity, and exhaust specifications to confirm the right configuration.

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