Equipment dependability and uptime are the key factors in the long‐ term profitability of your
commercial vehicle, equipment or fleet. As a result, DuraFit™ replacement diesel particulate filters
(DPFs) and diesel oxidation catalysts (DOCs) are designed to install quickly and provide exceptional
service life in your equipment.


Designed to Fit.

DuraFit replacement units ease installation and get your equipment back to work quickly. Each DuraFit unit is specifically designed to fit your application – ensuring an exact replacement for your OEM unit. Each DuraFit unit comes complete with required gaskets ‐ eliminating potential delays from errors with separate or multiple part numbers.

Built to Last.

Your equipment uptime and reliability is our primary concern. That's why replacement DPF and DOC units from DuraFit offer enhancements over many OEM units that help improve durability and extend service life.

We also put DuraFit units through some of the most stringent testing and verification processes – ensuring they meet or exceed OEM performance requirements and will continue to provide exceptional longevity in your heavy‐duty diesel equipment.

Although premium DuraFit replacement units may cost slightly more up front, they can produce longterm savings. Wen compared with the cost of lost productivity or repeated replacements due to premature failure, paying a little more for the enhancements inside DuraFit units is low‐cost insurance that pays dividends in the long‐term productivity of your equipment.

Click here to find a DuraFit DPF or DOC for your application.

DuraFit - Another chapter in more than 90 years
of ap emissions experience.

Since 1927, AP Emissions has been a leader in exhaust and emission products – designing, testing and manufacturing to stringent standards. Like our other products, the new DuraFit™ brand of replacement heavy-duty DPFs and DOCs and DieselTech™ replacement diesel exhaust parts fits with that same commitment to performance, durability and quality for our customers.

Click here to learn more about AP Emissions.

Designed to fit. Built to last. DuraFit™ - OEM Replacement Emission Technologies