AP Exhaust 770811 Catalytic Converter

Direct-Fit California Catalytic Converter

AP Exhaust 770811 is a direct-fit catalytic converter for select California-emissions applications. It is built to OE dimensions for proper fitment and uses AP Emissions Technologies’ ARISTO substrate chemistry to support efficient catalyst loading and converter performance.

Compatible with Cadillac DTS, Buick LeSabre, Buick Park Avenue, Cadillac DeVille, Pontiac Bonneville, and Oldsmobile Aurora applications listed below.

Key Features

• Direct-fit catalytic converter for California emissions applications
• OE-style dimensions for accurate fitment
• ARISTO substrate chemistry for efficient catalyst loading
• Manufactured with automated workstations and spinner welding equipment
• Built on high-speed production lines for consistent construction
• Part number: 770811

Fitment Details

• Fits 2011 Cadillac DTS, N/A — Direct Fit - California; Use with OE Pipe, Includes Resonator; EO Number: D-798-10
• Fits 2010 Cadillac DTS, N/A — Direct Fit - California; Use with OE Pipe, Includes Resonator; EO Number: D-798-10
• Fits 2009 Cadillac DTS, N/A — Direct Fit - California; Use with OE Pipe, Includes Resonator; EO Number: D-798-10
• Fits 2008 Cadillac DTS, N/A — Direct Fit - California; Use with OE Pipe, Includes Resonator; EO Number: D-798-10
• Fits 2007 Cadillac DTS, N/A — Direct Fit - California; Use with OE Pipe, Includes Resonator; EO Number: D-798-10
• Fits 2006 Cadillac DTS, N/A — Direct Fit - California; Use with OE Pipe, Includes Resonator; EO Number: D-798-10
• Fits 2005 Buick LeSabre, N/A — Direct Fit - California; Use with OE Pipe, Includes Resonator; EO Number: D-798-10
• Fits 2005 Buick Park Avenue, N/A — Direct Fit - California; Use with OE Pipe, Includes Resonator; EO Number: D-798-10
• Fits 2005 Cadillac DeVille, N/A — Direct Fit - California; Use with OE Pipe, Includes Resonator; EO Number: D-798-10
• Fits 2005 Pontiac Bonneville, N/A — Direct Fit - California; Use with OE Pipe, Includes Resonator; EO Number: D-798-10
• Fits 2004 Buick LeSabre, N/A — Direct Fit - California; Use with OE Pipe, Includes Resonator; EO Number: D-798-10
• Fits 2004 Buick Park Avenue, N/A — Direct Fit - California; Use with OE Pipe, Includes Resonator; EO Number: D-798-10
• Fits 2004 Cadillac DeVille, N/A — Direct Fit - California; Use with OE Pipe, Includes Resonator; EO Number: D-798-10
• Fits 2004 Pontiac Bonneville, N/A — Direct Fit - California; Use with OE Pipe, Includes Resonator; EO Number: D-798-10
• Fits 2003 Buick LeSabre, N/A — Direct Fit - California; Use with OE Pipe, Includes Resonator; EO Number: D-798-10
• Fits 2003 Buick Park Avenue, N/A — Direct Fit - California; Use with OE Pipe, Includes Resonator; EO Number: D-798-10
• Fits 2003 Cadillac DeVille, N/A — Direct Fit - California; Use with OE Pipe, Includes Resonator; EO Number: D-798-10
• Fits 2003 Oldsmobile Aurora, N/A — Direct Fit - California; Use with OE Pipe, Includes Resonator; EO Number: D-798-10
• Fits 2003 Pontiac Bonneville, N/A — Direct Fit - California; Use with OE Pipe, Includes Resonator; EO Number: D-798-10
• Fits 2002 Buick LeSabre, N/A — Direct Fit - California; Use with OE Pipe, Includes Resonator; EO Number: D-798-10
• Fits 2002 Buick Park Avenue, N/A — Direct Fit - California; Use with OE Pipe, Includes Resonator; EO Number: D-798-10
• Fits 2002 Cadillac DeVille, N/A — Direct Fit - California; Use with OE Pipe, Includes Resonator; EO Number: D-798-10
• Fits 2002 Oldsmobile Aurora, N/A — Direct Fit - California; Use with OE Pipe, Includes Resonator; EO Number: D-798-10
• Fits 2002 Pontiac Bonneville, N/A — Direct Fit - California; Use with OE Pipe, Includes Resonator; EO Number: D-798-10
• Fits 2001 Buick LeSabre, N/A — Direct Fit - California; Use with OE Pipe, Includes Resonator; EO Number: D-798-10
• Fits 2001 Buick Park Avenue, N/A — Direct Fit - California; Use with OE Pipe, Includes Resonator; EO Number: D-798-10
• Fits 2001 Cadillac DeVille, N/A — Direct Fit - California; Use with OE Pipe, Includes Resonator; EO Number: D-798-10
• Fits 2001 Oldsmobile Aurora, N/A — Direct Fit - California; Use with OE Pipe, Includes Resonator; EO Number: D-798-10
• Fits 2001 Pontiac Bonneville, N/A — Direct Fit - California; Use with OE Pipe, Includes Resonator; EO Number: D-798-10
• Fits 2000 Buick LeSabre, N/A — Direct Fit - California; Use with OE Pipe, Includes Resonator; EO Number: D-798-10
• Fits 2000 Buick Park Avenue, N/A — Direct Fit - California; Use with OE Pipe, Includes Resonator; EO Number: D-798-10
• Fits 2000 Cadillac DeVille, N/A — Direct Fit - California; Use with OE Pipe, Includes Resonator; EO Number: D-798-10
• Fits 2000 Pontiac Bonneville, N/A — Direct Fit - California; Use with OE Pipe, Includes Resonator; EO Number: D-798-10

Common Replacement Uses

• Check engine light related to catalyst efficiency
• Failed emissions inspection on California-emissions vehicles
• Restricted exhaust flow from a worn catalytic converter
• Replacement for a damaged or aging OE converter assembly
• Restoring proper exhaust after converter substrate deterioration

Installation Notes

Use with the OE pipe as specified in the fitment notes, and verify the EO number D-798-10 before installation. This AP Exhaust 770811 application includes a resonator per the listed fitment notes. Confirm the vehicle year, make, model, and California emissions configuration before ordering.

Quality Assurance

AP Emissions Technologies uses proprietary substrate chemistry and automated manufacturing processes to build converters to exact OE dimensions and fitment. The result is consistent construction for the listed California-emissions applications.