1990 345 GenSet muffler

[RBonney]

I was wondering if anyone knows a replacement muffler part number. I was replacing a exhaust manifold, cap rotor and plugs, wires and decided to turn the gen on to run the air . As I started it it stalled and I pushed the start button while it was cycling down and it back fired so hard it blew the round end off the muffler. Of course we have a road trip planned next week. So one more thing on my list lol. Today's plan is master cylinder and all new calipers and rubber hoses. Thanks

[Paul and Tam]

I bought our replacement muffler in 2014 on eBay from anyrvparts. It was listed as "Genuine Onan Generator Muffler 155-1258 " with free shipping. I found two priced just over $70 with a quick search in eBay.

Good Luck.

[RBonney]

Thanks for the numbers the parts are on the way. I called Onan in Elkhart and what great service and pricing. Should be here today.

[RBonney]

Back up and running. Here are the part numbers. The 2540 number is a new exhaust manifold adapter. The only used part is exhaust pipe coming out of new muffler. I had to supply my own clamps. My original support piece from the motor to my muffler was broke off the motor so I added my own support after the back muffler clamp.