Bandit Intimidator 18XP Gas Catalytic Converter Rebuild
The Bandit Intimidator 18XP is one of the most popular professional hand-fed chippers in the industry. Gas-powered 18XP machines come with either a GM 5.7L V8 or Ford 6.2L V8, both fitted with a three-way catalytic converter for EPA compliance. Hard chipping service degrades these converters faster than most operators expect. New England Supply House rebuilds them through our core-exchange program.
Engine & Emissions System
| Engine | GM 5.7L V8 Gas (165 HP) or Ford 6.2L V8 Gas (165 HP) |
|---|---|
| Emissions Tier | EPA Tier 4 (gas) |
| Catalyst Type | Three-way catalytic converter (TWC) |
Why Catalytic Converters Fail on This Machine
Wood chippers run at wide-open throttle continuously — a duty cycle few engines sustain for hours at a stretch. That constant high-load operation drives exhaust temperatures well above the normal operating range, accelerating catalyst substrate degradation. PSI engines are GM Vortec-based with port fuel injection, and as valve seals wear over time they introduce small amounts of oil into the combustion chamber. Oil contamination is one of the fastest ways to destroy a three-way catalyst: the phosphorus and zinc additives in engine oil coat the precious-metal substrate and permanently reduce conversion efficiency. Once that happens, the only fix is a rebuild.
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.