Dynomax 54020 Exhaust H Pipe

Dynomax 54020 Exhaust H Pipe

Dynomax 54020 is a direct-fit exhaust H pipe built for specific GM truck applications from 1996-1999. It uses mandrel bends, a 3-bolt welded flange inlet, and a 2.5-inch dual outlet layout to support a precise exhaust connection on compatible Chevrolet and GMC full-size trucks.

Key Features

• Direct-fit exhaust H pipe for specific applications
• Mandrel-bent steel construction for consistent flow path
• Aluminized finish for added corrosion resistance
• 3-bolt welded flange inlet connection
• 2.5-inch outside diameter outlet
• 40-inch overall length
• Premium-grade exhaust component
• Interchange reference: X4502

Product Details

Dynomax 54020 is engineered as a specific-fit exhaust H pipe for 1996-1999 Chevrolet and GMC C1500, C2500, K1500, and K2500 models with dual exhaust. Fitment includes balance tube configurations, with 1998 applications noted for Federal Emission System coverage and 1999 C2500/K2500 applications listed for under 8500 lb GVW. The mandrel-bent steel construction helps maintain a smooth internal path, while the aluminized finish adds durability for everyday truck use. This part number, 54020, is a practical replacement for owners restoring or servicing a dual-exhaust system on a Chevrolet K1500 or GMC K2500.

What It Helps Address

• Damaged or rusted balance tube sections
• Exhaust leaks at the H-pipe connection
• Restricted exhaust flow from worn factory tubing
• Fitment issues from using a universal pipe in a specific application
• Replacement needs during dual-exhaust repair or restoration

Installation Notes

Verify year, make, model, emission system, GVW, and dual-exhaust configuration before installation. This part uses a 3-bolt welded flange inlet and a pipe outlet connection, so matching the existing exhaust layout is important for proper alignment. Because fitment varies by model year and configuration, confirm the vehicle application against the listed rows for Chevrolet and GMC C1500, C2500, K1500, and K2500 trucks. Part number 54020 should be matched to the correct exhaust routing before final assembly.

Quality Assurance

Dynomax manufactures this exhaust component with precision benders and fixture checking to help ensure accurate fitment. The brand is part of Tenneco’s performance exhaust lineup, with engineering resources focused on exhaust system applications for trucks and other vehicles.