Morbark Eeger Beever 1821 Gas Catalytic Converter Rebuild
New England Supply House is the only company in the U.S. rebuilding wood chipper catalytic converters.
The Morbark Eeger Beever 1821 is an 18-inch capacity brush chipper built for heavy commercial use. Gas-powered 1821 machines come with either a Ford 6.2L V8 or PSI 6.0L V8, both running a three-way catalytic converter. The demanding duty cycle of professional chipping accelerates catalyst wear significantly. New England Supply House rebuilds these through our core-exchange program.
Engine & Emissions System
| Engine | Ford 6.2L V8 Gas (165 HP) or PSI 6.0L V8 Gas (~165 HP) |
|---|---|
| Emissions Tier | EPA Tier 4 (gas) |
| Catalyst Type | Three-way catalytic converter (TWC) |
Why Catalytic Converters Fail on This Machine
The Ford 6.2L is a proven industrial engine, but wood chipping duty pushes it hard. Continuous wide-open-throttle operation generates sustained exhaust heat that degrades the catalyst substrate over thousands of operating hours. Like other port-injected V8s, the 6.2L can develop valve seal wear over time, introducing oil ash into the exhaust stream. Oil-contaminated three-way catalysts lose conversion efficiency progressively — performance drops and fault codes appear — and cannot be cleaned back to spec. A rebuild is the only reliable solution.
What’s Included in the Rebuild
- Full disassembly and inspection of the catalyst housing and substrate
- New catalyst substrate installed to OEM specifications
- Reassembly using your existing housing (core exchange — your housing returns to you)
- Performance verification before return shipping
- Warranty against manufacturing defects
How Core Exchange Works
- Call or submit the fitment check form — we confirm your machine’s engine and emissions configuration before you ship anything.
- Remove your catalytic converter and ship the core to us with tracking and insurance. Ship to: New England Supply House, 14 Pinto Way, Mansfield, MA 02048
- We rebuild and return your core within 3–5 business days.
Request a Fitment Check
Call 774-701-6374 or submit a fitment check request online. This is not a complete list of compatible configurations — call us if your specific engine build isn’t listed.