Dynomax 55512 Exhaust Pipe

Dynomax 55512 Exhaust Pipe Overview

Dynomax 55512 is a specific-fit stainless steel exhaust pipe built for select Chevrolet Silverado 1500, Silverado 2500, GMC Sierra 1500, and Sierra 2500 applications. It uses mandrel bends and precision fixture checking to support a direct, accurate installation on Ultra Flo Welded System setups.

With a 4.000 in. inside diameter inlet, 3.000 in. outside diameter outlet, and 56.625 in. overall length, this exhaust pipe is built for performance-focused replacement work on 1999-2007 trucks. Dynomax 55512 is a practical choice when you need a stainless steel exhaust pipe for a Silverado or Sierra with the correct system configuration.

Key Features

• Part number: 55512
• Stainless steel construction
• Mandrel-bent pipe for consistent flow path
• Specific fit for select truck applications
• 4.000 in. inlet inside diameter
• 3.000 in. outlet outside diameter
• 56.625 in. overall length
• Natural finish
• 2-bolt welded flange with spherical flare inlet connection
• Performance grade, premium product class

Detailed Description

Dynomax 55512 is engineered as a replacement exhaust pipe for select Chevrolet Silverado 1500, Silverado 2500, GMC Sierra 1500, and Sierra 2500 models equipped with Ultra Flo Welded System configurations. The stainless steel construction supports durability, while the mandrel-bent design helps maintain a smooth internal path through the pipe. Precision bending and fixture checking are used to help ensure proper fitment during installation.

This part number 55512 is listed for 1999-2007 coverage, with fitment varying by model year, exhaust layout, and GVW configuration. It is a direct-fit exhaust pipe for Silverado and Sierra trucks that require a 4-inch inlet and 3-inch outlet connection in the specified system layout.

Vehicle Fitment

• Fits 2007 Chevrolet Silverado 1500 Classic, N/A, Ultra Flo Welded System; Under 8600 (lb) GVW; with Single Exhaust
• Fits 2007 Chevrolet Silverado 1500 Classic, N/A, Ultra Flo Welded System; Exits in Rear on Either Side of License Plate; Under 8600 (lb) GVW; with Dual Exhaust
• Fits 2007 GMC Sierra 1500 Classic, N/A, Ultra Flo Welded System; Under 8600 (lb) GVW; with Single Exhaust
• Fits 2007 GMC Sierra 1500 Classic, N/A, Ultra Flo Welded System; Exits in Rear on Either Side of License Plate; Under 8600 (lb) GVW; with Dual Exhaust
• Fits 1999-2006 Chevrolet Silverado 1500, N/A, Ultra Flo Welded System; Exits in Rear on Either Side of License Plate; Under 8600 (lb) GVW; with Dual Exhaust
• Fits 1999-2006 Chevrolet Silverado 1500, N/A, Ultra Flo Welded System; Under 8600 (lb) GVW; with Single Exhaust
• Fits 1999-2006 GMC Sierra 1500, N/A, Ultra Flo Welded System; Under 8600 (lb) GVW; with Single Exhaust
• Fits 1999-2006 GMC Sierra 1500, N/A, Ultra Flo Welded System; Exits in Rear on Either Side of License Plate; Under 8600 (lb) GVW; with Dual Exhaust
• Fits 1999-2000 Chevrolet Silverado 2500, N/A, Ultra Flo Welded System; Exits in Rear on Either Side of License Plate; Under 8600 (lb) GVW; with Dual Exhaust
• Fits 1999-2000 Chevrolet Silverado 2500, N/A, Ultra Flo Welded System; Under 8600 (lb) GVW; with Single Exhaust
• Fits 1999-2000 GMC Sierra 2500, N/A, Ultra Flo Welded System; Under 8600 (lb) GVW; with Single Exhaust
• Fits 1999-2000 GMC Sierra 2500, N/A, Ultra Flo Welded System; Exits in Rear on Either Side of License Plate; Under 8600 (lb) GVW; with Dual Exhaust

Common Replacement Uses

• Replacing a damaged or rusted exhaust pipe section
• Restoring proper exhaust routing on a Silverado or Sierra
• Repairing a leaking connection in an Ultra Flo Welded System
• Matching a 4-inch inlet to a 3-inch outlet exhaust layout
• Supporting a performance exhaust repair on compatible GM trucks

Installation Notes

Verify the vehicle’s exhaust configuration, GVW rating, and system type before ordering. This part uses a 2-bolt welded flange with spherical flare inlet connection and a pipe-style outlet connection, so alignment with the existing exhaust system is important. Confirm the truck is equipped with the listed Ultra Flo Welded System application before installation.

For search relevance, this Dynomax exhaust pipe is a fitment-specific replacement for Chevrolet Silverado 1500, GMC Sierra 1500, and related 1999-2007 truck applications. Part number 55512 should be matched to the exact year, model, and exhaust layout shown in the fitment table.

Quality Assurance

Dynomax backs this performance exhaust product with engineering-focused design and manufacturing controls, including precision bending and fixture checking for fit consistency. The stainless steel construction and premium product grade support dependable service in the specified applications.