ASV RT-120 DOC Rebuild

New England Supply House rebuilds the diesel oxidation catalyst (DOC) on the ASV RT-120 — send us your core and we’ll rebuild it with new internals, built to meet EPA emissions standards, for a fraction of OEM cost.

How the rebuild works

Core exchange is required — we rebuild your catalytic converter, so we need your core to complete the job.

Get a quote. Tell us your machine’s model, engine, and serial, and we’ll reply with a price.
Ship us your catalytic converter core (with tracking and insurance).
We rebuild it with new internals, built to meet EPA emissions standards.
We ship it back — usually within 3–5 business days of receiving your core.

Fits the ASV RT-120

The ASV RT-120 (Forestry) is a high-horsepower Posi-Track carrier used for mulching, powered by a Cummins QSF3.8 diesel with a diesel oxidation catalyst (DOC). Confirm your machine is a Tier 4 build (roughly 2014 and newer); pre-Tier 4 and the smallest sub-25 hp units have no rebuildable catalyst. Not sure what your machine has? Call 774-701-6374 with your engine model and serial and we’ll confirm before you ship.

Pricing: Off-road converter rebuilds are quoted per engine and converter — call 774-701-6374 for your price.

Why rebuild instead of buying new

	New OEM converter	NESH rebuild
Cost	Full dealer price	Save vs. OEM
Turnaround	Often weeks via a dealer	~3–5 business days after we get your core
Emissions	OEM	Built to meet EPA emissions standards
Backing	Manufacturer	Warranty against manufacturing defects

Get your quote

Get your quote → or call 774-701-6374