Dorman 674-2020 Diesel Particulate Filter (DPF)

Dorman 674-2020 Diesel Particulate Filter Overview

The Dorman 674-2020 diesel particulate filter is a direct-fit replacement for specified diesel applications that require an OE-style DPF with flanged inlet and outlet connections. Built with a stainless steel body and silicon carbide substrate, it is engineered to match the original filter’s fit and function while supporting reliable exhaust aftertreatment performance.

Compatible With diesel exhaust systems that use a specific-fit DPF design, this part number is a practical replacement when servicing emissions components on vehicles such as Ford F-250 and Ford F-350 applications that call for Dorman 674-2020.

Key Features

• Specific-fit diesel particulate filter for matched OE-style replacement
• Flanged inlet and outlet connections for direct installation on the intended application
• Stainless steel body for durability in high-heat exhaust environments
• Silicon carbide substrate material for diesel particulate filtration
• Includes inlet and outlet gaskets for sealing at the connection points
• No sensor ports, matching applications that do not use integrated DPF sensor provisions

Detailed Product Description

Dorman 674-2020 is designed for diesel exhaust systems that require a replacement particulate filter with the same fit and function as the original unit. The filter measures 13.1 inches overall length, 19 inches body height, 17 inches body width, and uses 13.22-inch inlet and outlet outside diameters with 13.32-inch inside diameters. Its flanged inlet and outlet design supports a secure connection on the specified vehicle platform.

This DPF is built with a stainless steel housing and a silicon carbide substrate, combining structural durability with filtration material suited to diesel exhaust service. For buyers searching for a DPF replacement for Ford F-250 or Ford F-350 diesel applications, Dorman 674-2020 provides a direct-fit option that aligns with the original configuration. This part cross-references 20864127 and C0006-SA for the same application.

Common Issues This Part Addresses

• Cracked or damaged diesel particulate filter housing
• Restricted exhaust flow caused by a failing DPF
• Emissions system faults related to a worn particulate filter
• Exhaust leaks at the inlet or outlet flange connections
• Replacement needs after DPF contamination or internal substrate failure

Installation Notes and Tips

Verify the vehicle’s original DPF dimensions, flange style, and sensor-port configuration before installation. Because this is a specific-fit part, it should be matched to the exact diesel application listed for the vehicle. Inspect the mating surfaces, replace worn seals as needed, and confirm proper flange alignment during installation to help prevent exhaust leaks.

Quality Assurance

Dorman designs this diesel particulate filter to match the original filter’s fit and function on the specified vehicles. The stainless steel construction and silicon carbide substrate support dependable service in diesel exhaust applications, and the included gaskets provide the sealing components identified in the product contents.