yifengcatalyst.com

Direct Fit Catalytic Converter

Catalytic Converter Manufacturer

Direct-Fit Catalytic Converters Built Around Your Applications

Develop model-specific replacement converters from an OE sample, technical drawing, or verified vehicle reference. We support fitment sampling, repeat-order fixtures, catalyst configuration, private labeling, and multi-part-number B2B programs.

OE geometry matching

Sample approval before bulk

OEM / private label support

Bolt-On Installation

Flanges, pipe routing, brackets, and sensor ports positioned for the target application.

Reference-Based Fitment

OE samples and dimensioned drawings are preferred for the most reliable first sample.

Repeat-Order Fixtures

Dedicated assembly fixtures help hold approved geometry across production batches.

Program Supply

Suitable for one high-volume part number or a growing vehicle coverage program.

Catalytic Converter Manufacturer

More Than a Catalyst Core — A Complete Vehicle-Specific Assembly

A direct-fit converter must combine emissions functionality with application accuracy. The shell, pipes, flanges, brackets, sensor ports, and heat shields all need to work together as one installable part.

Application Geometry

Pipe angles, flange faces, hanger locations, and overall clearance are developed around the target vehicle reference.

Catalyst Configuration

Substrate material, cell density, coating system, and loading are selected according to the project specification.

Assembly Control

Fixture-based welding and in-process checks help keep approved dimensions repeatable in later batches.

Market-Ready Supply

Neutral packaging, private label cartons, part-number labels, and barcodes can be arranged for distribution programs.

Configurable Manufacturing Scope

Build the Converter Around Your Reference and Market Requirements

Each part number can be configured around your application reference, technical target, order volume, and distribution requirements.

01 / FITMENT

OE Geometry & Mounting

Developed from the best available reference data.

02 / CORE

Substrate Selection

Core construction selected for the application and technical target.

03 / CATALYST

Coating Configuration

Coating systems are reviewed against the engine and aftertreatment requirements.

04 / HOUSING

Shell, Pipe & Heat Shield

Material and construction follow the approved drawing or sample.

05 / VALIDATION

Sample & Fitment Approval

New part numbers move through a controlled sample-confirmation stage.

06 / BRAND

Labeling & Packaging

Supply presentation can be aligned with your distribution model.

Fitment Type
Vehicle-specific, direct-fit replacement assembly
Reference Priority
OE sample → dimensioned drawing → verified vehicle/OE reference
Shell / Pipe
Stainless steel grade and thickness confirmed by project
Sensor Boss
M18 × 1.5 is common; other threads reviewed as required
Substrate
Cordierite ceramic or Fe-Cr-Al metallic
Cell Density
400 / 600 CPSI are common; other specifications by review
Gaskets / Hardware
Available when included in the approved supply scope
Order Structure
Single part number or multi-part-number vehicle program
Application and compliance: Final emissions performance depends on the complete engine and aftertreatment system, catalyst specification, and validation method. Market-specific certification should be confirmed through the required vehicle or project testing.

Configurable Manufacturing Scope

From Vehicle Reference to Repeatable Production

Each new part number moves through reference review, engineering definition, sample development, fitment approval, and controlled production. Physical samples or complete drawings normally provide the most reliable starting point.

01

Reference Review

Share Year / Make / Model / Engine, OE number, photos, drawing, or an original sample. We assess feasibility and identify missing data.

02

Engineering Definition

Confirm fitment geometry, substrate, coating target, material, packaging, estimated quantity, and the target market.

03

Sample Development

A pre-production sample is manufactured for dimensional review and test fitting on the intended vehicle application.

04

Fitment Approval

You verify flange alignment, bracket position, sensor location, pipe routing, clearance, and installation. Revisions are made if required.

05

Fixture & Bulk Production

After approval, dedicated fixtures and production controls are used to reproduce the confirmed configuration.

Planning a coverage program? Start with priority applications and commercial volumes. Developing the highest-demand part numbers first usually creates a more manageable launch sequence.

Fitment and Production Control

Quality Checks Focused on the Details That Cause Installation Problems

Direct-fit failures are often caused by small geometric errors rather than the converter body itself. The inspection plan therefore needs to cover both catalytic construction and the complete assembly.

Critical Dimension Verification

Overall length, flange spacing, pipe angles, bracket positions, and sensor-boss locations are checked against the approved reference.

Welding and Assembly Inspection

Shell seams, cone joints, flange welds, brackets, and visible weld quality are reviewed during production.

Fixture Repeatability

Dedicated fixtures help hold the approved part geometry across repeat batches and different operators.

Sample-to-Bulk Release

Bulk production begins only after the sample configuration and any required revisions have been approved.

15,000 m² Manufacturing Base

Integrated capabilities for substrate production, catalyst coating, housing assembly, and export supply.

Flexible Program Structure

Start With One Priority Part Number or Build a Vehicle Coverage Range

The right approach depends on your market data, reference availability, and expected volume per application.

Focused Launch

Single Part Number Development

Best for a proven high-demand application, replacement project, or initial supplier qualification.

Focused Launch

Multi-Part-Number Vehicle Program

Best for importers, distributors, and aftermarket brands building a model-specific product range.

Prepare a Useful RFQ

Send the Details Needed for Fitment and Quotation Review

Include the details below so our engineering and sales teams can identify the correct application, development route, and quotation scope.

Three Ways to Start

Send the most complete reference currently available. Our team will review it and confirm any additional information needed for development and quotation.

01

Send an OE Sample

Preferred for direct measurement

02

Send a Dimensioned Drawing

Include all mounting points and angles

03

Send a Vehicle / OE Reference

Subject to reference availability and feasibility

Flexible Program Structure

Choose the Product Route That Fits Your Sales Model

FLEXIBLE FIT

Universal Catalytic Converter

A broad-application option for buyers who prefer fewer SKUs and accept installer cutting or welding.

FLEXIBLE FIT

Universal Catalytic Converter

A broad-application option for buyers who prefer fewer SKUs and accept installer cutting or welding.

FLEXIBLE FIT

Universal Catalytic Converter

A broad-application option for buyers who prefer fewer SKUs and accept installer cutting or welding.

Frequently Asked Questions

Direct-Fit Program Questions

Answers to common questions about reference requirements, fitment approval, order structure, accessories, compliance, and private-label supply.

Do you have a public vehicle application catalog?

We develop direct-fit projects around the buyer’s target applications and available reference data. Share the vehicle and OE information you need, and we will review feasibility. A physical OE sample or complete drawing normally provides the most reliable development basis.

Sometimes, but feasibility depends on the quality and availability of reference data. For accurate geometry and faster confirmation, an OE sample, dimensioned drawing, OE number, and clear installation photos are strongly recommended.

We manufacture a pre-production sample for the buyer to inspect and test fit on the intended vehicle. The buyer confirms flange alignment, bracket position, sensor location, pipe routing, clearance, and installation. Any required revisions are completed before the configuration is released for bulk production.

Yes, a program can contain multiple approved part numbers. Commercial feasibility depends on quantity per part number, reference availability, tooling requirements, and packaging complexity. These points are reviewed during quotation.

They can be included when specified in the approved supply scope. Because hardware requirements vary by application and market, confirm the gasket, bolts, clamps, and accessory list during quotation rather than assuming they are standard with every unit.

Compliance depends on the complete vehicle, catalyst specification, test method, documentation, and the rules of the target market. We can manufacture to an agreed technical target, but certification or legal compliance claims should only be made when supported by the required project-specific testing and approvals.

Yes. Neutral cartons, private label packaging, part-number labels, barcodes, and palletized export packing can be discussed. Packaging details are normally finalized after the product configuration and order structure are confirmed.

Start With the Best Reference Available

Send Your Vehicle List, OE Sample, or Drawing for Review

We will review fitment feasibility, required reference data, product configuration, sample development, and the commercial structure for your target applications.

Sample and bulk schedules are quoted after reference quality, tooling needs, and the number of part applications are reviewed.

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