left side exhaust for 1948 c170 ( o300)
Moderators: GAHorn, Karl Towle, Bruce Fenstermacher
Forum rules
Guests and forum participants are welcome to view posts in this area but one must be TIC170A member to post an ad here - -Why Join the TIC170A - - How to Join the TIC170A
Guests and forum participants are welcome to view posts in this area but one must be TIC170A member to post an ad here - -Why Join the TIC170A - - How to Join the TIC170A
- jordy@jordy.com
- Posts: 8
- Joined: Sun Feb 09, 2025 1:46 pm
left side exhaust for 1948 c170 ( o300)
I need a left side exhaust for my 48' c170 with o300 engine. if anyone has any leads I would appreciate it...
1948 C170 N3948V
- n2582d
- Posts: 3013
- Joined: Mon Apr 29, 2002 4:58 am
Re: left side exhaust for 1948 c170 ( o300)
Jordy,
I see that you're relatively new to the forum. The consensus here seems to be that nobody is repairing the original "pancake-style" muffler and owners have been forced to install mufflers from the later models. See this discussion. Unfortunately, you must replace them both at one time; you can't have a pancake-style on the right and a new style Hanlon-Wilson on the left side. I do see that Preferred Air Parts has one NOS right side pancake muffler in stock (p/n 0550290-1) - probably the last new one in existence. I don't know if one could do a mufflerectomy to make that work for the left side. My guess is that it would be cheaper to just do the conversion to the later style using AK70A51-1 as approved data for the alteration.
I see that you're relatively new to the forum. The consensus here seems to be that nobody is repairing the original "pancake-style" muffler and owners have been forced to install mufflers from the later models. See this discussion. Unfortunately, you must replace them both at one time; you can't have a pancake-style on the right and a new style Hanlon-Wilson on the left side. I do see that Preferred Air Parts has one NOS right side pancake muffler in stock (p/n 0550290-1) - probably the last new one in existence. I don't know if one could do a mufflerectomy to make that work for the left side. My guess is that it would be cheaper to just do the conversion to the later style using AK70A51-1 as approved data for the alteration.
Gary
- jordy@jordy.com
- Posts: 8
- Joined: Sun Feb 09, 2025 1:46 pm
Re: left side exhaust for 1948 c170 ( o300)
Hi Gary, Thanks so much for the response. My c170 does already have the "new style exhaust". they are in relatively good shape except for the front elbow on the left side is a little thin and I am afraid it might fail at an un opportune time.
1948 C170 N3948V
- GAHorn
- Posts: 21295
- Joined: Fri Apr 12, 2002 8:45 pm
Re: left side exhaust for 1948 c170 ( o300)
IF your exhaust has already been modified to the later HW exhaustI then it might be useful to know that AWI, Inc has been one of our supporters for years. I suggest you contact them and ask for Charlie Felds.
'53 B-model N146YS SN:25713
50th Anniversary of Flight Model. Winner-Best Original 170B, 100th Anniversary of Flight Convention.
An originality nut (mostly) for the right reasons.
50th Anniversary of Flight Model. Winner-Best Original 170B, 100th Anniversary of Flight Convention.
An originality nut (mostly) for the right reasons.

- jordy@jordy.com
- Posts: 8
- Joined: Sun Feb 09, 2025 1:46 pm
Cessna® is a registered trademark of Textron Aviation, Inc. The International Cessna® 170 Association is an independent owners/operators association dedicated to C170 aircraft and early O-300-powered C172s. We are not affiliated with Cessna® or Textron Aviation, Inc. in any way.