Converter type
Heavy Truck Diesel catalytic converters
Heavy truck diesel units are the DOC, DPF and SCR sections off Peterbilt, Kenworth, Freightliner, Volvo, Mack and International trucks, identified by the engine or truck maker's part number (for example a PACCAR EPN starting A029), and each is priced by that number.
We pay for this type
$49 to $1,418
Diesel category. Updated October 1, 2026. Final price on inspection.
Get a quote for yoursHow to find the code
The code is stamped into the shell or a welded plate, usually near a flange. Wipe the surface and photograph it straight on in daylight. If two sections are welded together, photograph both.