D&S is the only company in the U.S. rebuilding wood chipper catalytic converters. We also supply three-way catalytic mufflers for forklifts, diesel oxidation catalysts, particulate filters and DPF cleaning, SCR systems and silencers for off-road equipment, trucks and generators. Chipper rebuilds go in your original housing on a core exchange, back to you in 1–2 business days.
Everything on the exhaust side of a diesel, propane or gas engine. Chipper rebuilds order online at flat pricing; everything else is matched to your engine and quoted.
New catalyst in your original housing. Chippers at flat pricing, other equipment quoted.
Learn more →Direct-fit three-way catalytic mufflers and closed-loop kits for propane and gas engines.
Learn more →Rebuilt or new DOCs for off-road diesel equipment and generators.
Learn more →Air and thermal cleaning with a flow test, plus replacement filters for trucks and Tier 4 equipment.
Learn more →Selective catalytic reduction packages sized to generators and off-road engines.
Learn more →Generator silencers, catalytic silencers and direct-fit replacement mufflers.
Learn more →Gas and diesel, across every brand — we rebuild every wood chipper catalytic converter. Browse by brand below, or order the rebuild you need — gas or diesel — at newenglandsupplyhouse.com. Not sure it's a fit? Send a photo and we'll confirm.
Rebuilt converters for Bandit hand-fed and whole-tree units.
View Bandit rebuilds →Rebuilt converters for Morbark chippers, gas and diesel.
View Morbark rebuilds →Rebuilt converters for Vermeer brush and whole-tree chippers.
View Vermeer rebuilds →Rebuilt converters for J.P. Carlton Apache drum chippers.
View Carlton rebuilds →Any make, any model, gas or diesel — if your chipper has a catalytic converter, we rebuild it. Order your rebuild → Not sure it's a fit? Send a photo.
On chipper engines the cat loads up with carbon and chokes exhaust flow. Common tells:
Bogs under load, slow to recover.
Can't hold rated speed.
Fault light or Tier 4 derate.
Restricted exhaust, extra heat.
Order the catalytic converter rebuild you need — gas or diesel — at newenglandsupplyhouse.com.
Choose drop-off or shipping at checkout and we'll send instructions — drop-off is by appointment at our Foxboro shop, or ship it to us from anywhere in the country. We rebuild your unit with new internals.
Standard turnaround is 1–2 business days.
Sell D&S rebuilds to your customers at dealer pricing — 1–2 business days, backed by a warranty against manufacturing defects.
Become a dealer →Wood chipper catalytic converter rebuilds are $1,550 for gas machines and $1,750 for diesel — flat pricing, any make or model, core exchange required. A new OEM converter runs about $9,000. Other equipment is quoted per converter — send us the details. Catalytic mufflers, DOCs, DPF cleaning, SCR systems and silencers are quoted from the engine make and model — see all products.
Three steps: place your order at newenglandsupplyhouse.com (gas or diesel), choose drop-off or shipping at checkout and we'll send instructions, and you're back to work in 1–2 business days.
1–2 business days once we have your core.
Yes — it's a core exchange. At checkout, choose drop-off (by appointment at our Foxboro, MA shop) or shipping from anywhere in the country, and we'll send instructions. We rebuild your original housing and send it back.
Deleting usually causes more headaches than it solves — running without the converter can throw the engine out of spec, and on newer Tier 4 machines it often won't work anyway (the engine monitors the cat, so it can flag a fault or drop into a reduced-power derate). A rebuild gets your power back the right way for a fraction of OEM.
Backed by a warranty against manufacturing defects.
Order the catalytic converter rebuild — $1,550 gas / $1,750 diesel, any make or model, core exchange — and we'll send drop-off or shipping instructions at checkout. Other equipment? Call for a quote.
Order your rebuild ☎ 774-701-6374