PIPER 34-400 Seneca II & III Exhaust System Itemized Parts List
| Item | Part # | Description | Condition |
|---|---|---|---|
| 01 | 640964R-R | STACK ASSY – RH – 2 BOLT FLANGE | OVERHAUL |
| 02 | 640964-101 | TEE ASSY – CYL #1 – 2 BOLT FLANGE | OVERHAUL |
| 02 | 643861-101 | TEE ASSY – CYL #1 – 2 BOLT FLANGE | OVERHAUL |
| 03 | 640964-103 | TEE ASSY – CYL #3 – 2 BOLT FLANGE | OVERHAUL |
| 03 | 643861-103 | TEE ASSY – CYL #3 – 2 BOLT FLANGE | OVERHAUL |
| 04 | 640964-105 | ELBOW ASSY – CYL #5 – 2 BOLT FLANGE | OVERHAUL |
| 04 | 643861-105 | ELBOW ASSY – CYL #5 – 2 BOLT FLANGE | OVERHAUL |
| 05 | 640964L-R | STACK ASSY – LH – 2 BOLT FLANGE | OVERHAUL |
| 06 | 640964-102 | TEE ASSY – CYL #2 – 2 BOLT FLANGE | OVERHAUL |
| 06 | 643861-102 | TEE ASSY – CYL #2 – 2 BOLT FLANGE | OVERHAUL |
| 07 | 640964-104 | TEE ASSY – CYL #4 – 2 BOLT FLANGE | OVERHAUL |
| 07 | 643861-104 | TEE ASSY – CYL #4 – 2 BOLT FLANGE | OVERHAUL |
| 08 | 640964-106 | ELBOW ASSY – CYL #6 – 2 BOLT FLANGE | OVERHAUL |
| 09 | 643861-106 | ELBOW ASSY – CYL #6 – 2 BOLT FLANGE | OVERHAUL |
| 09 | 640964-107 | ELBOW – RH | OVERHAUL |
| 09 | 643861-117 | ELBOW – RH | OVERHAUL |
| 10 | 640964-108 | ELBOW – LH – TAB FORWARD | OVERHAUL |
| 10 | 643861-118 | ELBOW – LH – TAB AFT | OVERHAUL |
| 11 | 640964-109 | WYE ASSY | OVERHAUL |
| 12 | 643861-119 | BY PASS – WASTEGATE | OVERHAUL |
| 12 | K640-3 | BY PASS – WASTEGATE | N/A |
| 13 | 640964-110 | TAILPIPE | OVERHAUL |
| N/S | 970 | CYLINDER GASKET WITH HARDWARE | NEW |
Details
ORDER INDIVIDUAL PARTS NOT STACK ASSY NUMBERS
SENECA ll 1975 THRU 1981
SENECA lll 1981 THR 1993
SENECA Lv 1994 thru 1997