ACDelco 19420233 Exhaust Manifold Kit with Three-Way Catalytic Converter

The ACDelco 19420233 is a GM Genuine Parts OEM Exhaust Manifold Kit with Integrated Three-Way Catalytic Converter, engineered as a direct factory replacement for 1.8L engines. This complete kit includes the exhaust manifold, three-way catalytic converter, brace, support, mounting bolts, and label — everything needed for a factory-correct installation.

As a GM Genuine Part, this assembly is designed, engineered, and tested to the same rigorous standards used in original vehicle production. The integrated three-way catalytic converter reduces harmful exhaust emissions including carbon monoxide (CO), unburned hydrocarbons (HC), and oxides of nitrogen (NOx), helping maintain compliance with emissions standards.

Key Features:

• Genuine OEM GM part — not an aftermarket substitute
• Integrated three-way catalytic converter for complete emissions control
• Complete kit includes manifold, brace, support, bolts, and label
• Designed for 1.8L non-PZEV engines, including flex fuel applications
• Backed by General Motors with manufacturer warranty
• Direct OEM replacement — no modifications required for installation
• Replaces GM part numbers: 25194986, 25197218, 55583480

This exhaust manifold and catalytic converter assembly restores factory exhaust flow and emissions performance. Before installation, mating surfaces on the cylinder head and exhaust pipe should be thoroughly cleaned and inspected to ensure a proper, leak-free seal.