Case Compact Excavator DOC Rebuild
New England Supply House rebuilds the diesel oxidation catalyst (DOC) on Case compact excavators — 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 and place your order. Tell us your machine’s model, engine, and serial. We’ll reply with a price and set up your order.
- Get your converter to us. Choose drop-off or shipping — drop-off is by appointment at our Foxboro shop, or ship it to us from anywhere in the country with tracking and insurance. We’ll send instructions with your order. We rebuild your unit with new internals, built to meet EPA emissions standards.
- Back to work in 1–2 days (typically). Standard turnaround is 1–2 business days from receiving your core. Need it sooner? Ask about expedited service.
Which Case excavators have a rebuildable DOC
Tier 4 Case CX-series compact excavators in the roughly 26–75 hp band run diesels with a diesel oxidation catalyst (DOC), paired with a DPF on some models.
The sub-25 hp models have no aftertreatment. Not sure which you have? Call 774-701-6374 with your engine model and serial and we’ll confirm you have a rebuildable core 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 | ~1–2 business days after we get your core |
| Emissions | OEM | Built to meet EPA emissions standards |
| Backing | Manufacturer | Warranty against manufacturing defects |
Get your quote
Tell us your machine’s make, model, and engine and we’ll confirm we can rebuild the converter and give you a price.
Get your quote → or call 774-701-6374
We rebuild catalytic converters (diesel DOC and 3-way) for off-road equipment and wood chippers across all major engine brands. See our catalytic converter rebuild program.