Exhaust Y-Pipe Kit for MerCruiser 4" Exhaust Tube & Water Shutter
Exhaust Y-Pipe Kit for MerCruiser 4" Exhaust Tube & Water Shutter is backordered and will ship as soon as it is back in stock.
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Exhaust Y-Pipe Kit for MerCruiser 4" Exhaust Tube & Water ...
Exhaust Y-Pipe Kit for MerCruiser 4" Exhaust Tube & Water Shutter is backordered and will ship as soon as it is back in stock.
GH MARINE / BELLOWS & RELATED PARTS
About this part
This exhaust Y-pipe service kit is for MerCruiser stern drive applications using 4-inch upper and lower exhaust tubes and exhaust water shutters referenced by OEM component numbers 32-14358T, 32-44348T, and 807166A1. The listed OEM numbers identify the individual exhaust components rather than a single complete-kit part number; confirm each component reference and your exhaust Y-pipe configuration before purchase.
Match the application
Match this kit by verifying the individual upper exhaust tube, lower exhaust tube, and water shutter part numbers installed on your exhaust Y-pipe assembly.
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MerCruiser Stern / Out Drive · Exhaust Y-Pipe Assembly
For servicing the 4-inch lower exhaust tube (32-14358T), 4-inch upper exhaust tube (32-44348T), and exhaust water shutter (807166A1) around an exhaust Y-pipe. Confirm the individual component numbers and exhaust configuration before ordering; do not assume a water shutter with a different suffix, such as 807166A3, is interchangeable.
Applies with the stated conditions
Numbers to compare
The numbers below identify individual exhaust tubes, water shutters, or component references associated with this Y-pipe service kit. They are not single-part-number equivalents for the entire kit.
| Primary component OEM references | 32-14358T (32-14358T*2), 32-44348T (32-44348T*2), 807166A1 (807166A1*2) |
|---|---|
| Lower exhaust tube (4-inch) OEM references | Mercury Mariner / MerCruiser Stern / Out Drive: 32-14358T, 32-14358, 31-14358001, 32-14358001, 3214358001, 14358001, 3214358T, 14358T |
| Upper exhaust tube (4-inch) OEM references | Mercury Mariner / MerCruiser Stern / Out Drive: 32-44348T, 32-44348, 31-44348001, 32-44348001, 3244348001, 44348001, 3244348T, 44348T |
| Exhaust water shutter OEM reference | Mercury Mariner / MerCruiser Stern / Out Drive: 807166A1 |
| Non-interchangeable suffix note | Mercury Mariner / MerCruiser Stern / Out Drive: 807166A3 (listed for comparison only; do not assume 807166A3 is interchangeable with 807166A1) |
| Sierra component references | 18-2732, 18-2732-9, 18-2746, 18-2748 |
| GLM component references | 89120, 89130, 89170, 89175 |
| Mallory component references | 9-42802, 9-72805, 9-72811 |
| OBR Red Rhino component references | MR-507, MR-510 |
| EMP component reference | 32-08306 |
Technical details
| Product type | Exhaust Y-pipe Kit |
|---|---|
| Brand | GH Marine |
| Service location | Exhaust Y-pipe upper and lower tube connections and water shutter position |
| Exhaust tube size | 4-inch upper exhaust tube (32-44348T) and 4-inch lower exhaust tube (32-14358T) |
| Water shutter reference | 807166A1 (do not assume other suffixes such as 807166A3 interchange) |
Supplied contents
- Exhaust Y-pipe Kit
Workshop sequence
General workshop guidance only; use the service procedure for your exact drive or engine configuration.
- Compare the removed upper exhaust tube, lower exhaust tube, and water shutter against component references 32-44348T, 32-14358T, and 807166A1 before assembly.
- Inspect the exhaust Y-pipe mounting necks, internal shutter mounting surfaces, and adjacent exhaust passages for corrosion, heat distortion, or debris from old shutter pieces.
- Seat the 807166A1 water shutters and position the 4-inch upper (32-44348T) and lower (32-14358T) exhaust tubes in their designated locations without twisting or kinking the hose walls.
- Secure the connections according to the service manual for your specific MerCruiser exhaust configuration.
Questions from the workshop
Can I use this kit if my exhaust Y-pipe uses the 807166A3 water shutter?
Do not assume 807166A3 is interchangeable with 807166A1. This kit is associated with water shutter reference 807166A1, so verify the exact suffix required by your Y-pipe design before ordering.
How do 32-14358T and 32-44348T differ in the exhaust path?
Both references apply to 4-inch exhaust tubes, where 32-14358T identifies the lower exhaust tube and 32-44348T identifies the upper exhaust tube. Each number represents an individual component rather than the complete kit.
About GH Marine
GH Marine focuses on bellows and related marine service parts. Compare the application details, reference numbers and supplied contents together to select the part for your repair.
Delivery information
Estimated delivery: 7–15 calendar days.
Help with your order
For application questions, have your drive or engine identification and required part number ready.
Payment & Security
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