Grumman AA1A & AA1B Exhaust System Itemized Parts List
| Item | Part # | Description | Condition |
|---|---|---|---|
| 01 | A099001-137 | MUFFLER | NEW PMA |
| 02 | A099001-102 | RISER - STRAIGHT - 4.5" OVERALL LENGTH | NEW PMA |
| 03 | A0750161-25 | CLAMP - RISER - 1.75" - HALF - ORDER 2 FOR SET | NEW PMA |
| 04 | 503005-504 | SHELL - CARB HEAT - INBOARD | N/A |
| 05 | 503005-1 | SHELL - CARB HEAT - OUTBOARD - NO HOLES | N/A |
3" tailpipe with 6 straps
Check for loose muffler baffles by sticking a broom handle up the tailpipe to see if the baffles are attached to the muffler.
Lycoming O-235