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Old 07-26-2010, 06:03 PM   #1
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Question Muffler for 2002 36 MDDS

We're in Rapid City and have a hole in the muffler. Need a new one but no one can seem to locate a replacement. Anyone have any leads and any facility in the upper midwest to have service done on an Alpine?


Barbara & David O'Keeffe
Figment II (Alpine 2002 36 MDDS)
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Old 07-26-2010, 06:49 PM   #2
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There's several threads on this forum identifying diesel mufflers.

I used the following web site to locate a diesel exhaust system dealer in Rapid City:


It identifies Butler Machinery at 3601 Deadwood Ave N, Rapid City, SD 57702-9675. Hopefully, they have a muffler that will work.

Bob Bowers (Surprise, AZ)
2003 Alpine Coach 40' FDTS
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Old 07-27-2010, 03:03 PM   #3
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The muffler is Nelson NEL 86542M. The number is stamped on the underside of the muffler if you want to double check. This can be ordered from Ryder Fleet Products ( their part number is S48 31566) but it is a special and can take up to 4 weeks to obtain.
John and Mary Knight
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Old 07-28-2010, 01:40 AM   #4
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You can use an aftermarket muffler like I did. I had a 4” Aero Muffler installed on my Alpine. This also increased my turbo boost by 1½ psi. Slightly more noise when I am standing next to the exhaust but I can not tell the difference while inside the coach. Many RV service centers will be able to get this muffler within a day.

Dave Fernandez
2001, 38ft FDDS, 350 ISC, Tow 2004 Yukon
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Old 08-05-2010, 04:17 PM   #5
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Well, we got it fixed. The muffler is actually a Fleetguard part - #86542M (Fleetguard Exhaust) as are the hangers, connectors, C strap, etc. Dave had talked to Andy at Cummins in Yakima who took the measurements and found the part number for us, and then had us call Cummins in Sioux Falls (where we were headed) who ordered the parts and got it in today.

Couldn't see any part numbers on the original - they were probably located where the holes were!

Barbara & David O'Keeffe
Figment II (Alpine 2002 36 MDDS)
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Old 08-06-2010, 04:43 AM   #6
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Nelson was the OEM supplier for these mufflers and they were made at Nelson's Black River Falls plant in WI. Nelson was bought by Fleetguard a few years back and the name changed but the part number remained the same.

Ryder sold me a new Nelson muffler for my Alpine 2 years ago for $150.00.

Bob (Squidly Down Under) & Peg - 2013 Ford Focus pushing a 2011 Phoenix Cruiser 2552S
"In God we trust" to preserve our country and bring our Troops safely home.
Carry on, regardless..................
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