Upper Exhaust Bellow – Fits MerCruiser V6/V8 (Replaces 32-44348T, 32-44348001)
Upper Exhaust Bellow – Fits MerCruiser V6/V8 (Replaces 32-44348T, 32-44348001) is backordered and will ship as soon as it is back in stock.
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Worry-free returns
You may return most new, unopened items within 7 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
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Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Upper Exhaust Bellow – Fits MerCruiser V6/V8 (Replaces 32-44348T, 3...
Product Details
This Upper Exhaust Bellow connects the riser to the elbow on MerCruiser V6 and V8 engines with center-mounted risers. Designed for a precise fit, it is compatible with a wide range of engines from 4.3L to 8.2L, ensuring reliable performance for various model years.
It serves as a direct replacement for MerCruiser part numbers 32-44348T, 32-44348001, and 32-44348, as well as aftermarket equivalents from Sierra, GLM, and Mallory.
- Connects the exhaust riser to the Y-pipe elbow.
- Constructed from high-grade CR Rubber (Chloroprene) for durability.
- Includes the necessary stainless steel hose clamps for installation.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| MerCruiser | 32-44348T |
| MerCruiser | 32-44348001 |
| MerCruiser | 32-44348 |
| Sierra | 18-2748 |
| GLM | 89120 |
| Mallory | 9-72805 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| MerCruiser | 4.3L (GEN II) 2 BBL. GM | 4.3L | 4-Stroke | 1992–1993 | 32-44348T | Serial 0D714107-0F000877 |
| MerCruiser | 4.3LX GEN II 4 BBL. GM | 4.3L | 4-Stroke | 1992–1993 | 32-44348T | Serial 0D714370-0F001219 |
| MerCruiser | 4.3L (GEN +) | 4.3L | 4-Stroke | 1996–2001 | 32-44348T | 262 MAG (TBI) |
| MerCruiser | 4.3L EFI (GEN +) | 4.3L | 4-Stroke | 1996–2001 | 32-44348T | |
| MerCruiser | 4.3 LH (GEN +) | 4.3L | 4-Stroke | 1996–2001 | 32-44348T | |
| MerCruiser | 4.3LX (GEN +) | 4.3L | 4-Stroke | 1996–2001 | 32-44348T | |
| MerCruiser | GM 262 V6 | 4.3L | 4-Stroke | 1996–2001 | 32-44348T | |
| MerCruiser | 200 2 BBL. GM | 5.0L | 4-Stroke | 1987 | 32-44348T | Serial 0B525982-0B774444 |
| MerCruiser | 230 4 BBL. GM | 5.0L | 4-Stroke | 1987 | 32-44348T | Serial 0B525982-0B773739 |
| MerCruiser | 260 GM | 5.0L | 4-Stroke | 1987 | 32-44348T | Serial 0B525982-0B773304 |
| MerCruiser | 350 MAG ALPHA GM | 5.7L | 4-Stroke | 1987–1995 | 32-44348T | Serial 0B525982-0F600999 |
| MerCruiser | 5.0L 2 BBL. GM | 5.0L | 4-Stroke | 1988–1995 | 32-44348T | Serial 0B774445-0F600999 |
| MerCruiser | 5.0LX 4 BBL. GM | 5.0L | 4-Stroke | 1988–1995 | 32-44348T | Serial 0B773740-0F600999 |
| MerCruiser | 5.7L GM | 5.7L | 4-Stroke | 1988–1995 | 32-44348T | Serial 0B525982-0F600999 |
| MerCruiser | 7.4L BRAVO GM 454 | 7.4L | 4-Stroke | 1988–1991 | 32-44348T | Serial 0B771113-0D603117 |
| MerCruiser | 350 MAG (SKI) GM | 5.7L | 4-Stroke | 1991–1996 | 32-44348T | Serial 0D505450-0K040399 |
| MerCruiser | 7.4L BRAVO GEN. V GM | 7.4L | 4-Stroke | 1992–1996 | 32-44348T | Serial 0D603118-0F800699 |
| MerCruiser | 454 MAG. BRAVO GEN. V GM | 7.4L | 4-Stroke | 1992–1993 | 32-44348T | Serial 0D805069-0F304999 |
| MerCruiser | D4.2L/220 IDI VM 254 | 4.2L | Diesel | 1994–1998 | 32-44348T | Serial 0D554732-0M999999 |
| MerCruiser | 5.0L MPI | 5.0L | 4-Stroke | 1996–2003 | 32-44348T | GM305 CID |
| MerCruiser | 5.7L | 5.7L | 4-Stroke | 1996–2003 | 32-44348T | 350 MAG, GM350 CID |
| MerCruiser | 5.7LX | 5.7L | 4-Stroke | 1996–2003 | 32-44348T | |
| MerCruiser | 6.2L MPI V8 | 6.2L | 4-Stroke | 1996–2003 | 32-44348T | |
| MerCruiser | 7.4L | 7.4L | 4-Stroke | 1996–2003 | 32-44348T | 330, 340MIE, 370TRS, 454 EFI |
| MerCruiser | 7.4LX | 7.4L | 4-Stroke | 1996–2003 | 32-44348T | GM454 CID V8 |
| MerCruiser | 8.2L | 8.2L | 4-Stroke | 1996–2003 | 32-44348T | 502 EFI, 502 MAG, GM502 CID |
Technical Specs
- Product Type
- Upper Exhaust Bellow
- Installation
- Connects riser to elbow
- Inside Diameter
- 4 inches (101 mm)
- Connection
- Center-mounted risers with 4" exhaust systems
- Material
- CR Rubber (Chloroprene)
- Hardware Included
- Stainless steel hose clamps
- Manufacturing Standards
- ISO 9002 certified
- Warranty
- 1 Year (varies by retailer)
What’s in the Box
- 1 x Upper Exhaust Bellow
- 2 x Stainless Steel Hose Clamps
Installation Notes
- Disconnect the boat's battery for safety.
- Allow the engine and exhaust system to cool completely.
- Loosen and remove the hose clamps securing the old bellow.
- Carefully remove the old exhaust bellow. Note its orientation.
- Clean the mounting surfaces on the riser and elbow to ensure a good seal.
- Position the new bellow and slide it into place.
- Secure the new bellow with the provided stainless steel hose clamps.
- Tighten the clamps firmly but do not overtighten.
- reconnect the battery, run the engine, and check for any exhaust leaks.
Troubleshooting & FAQ
How do I confirm this bellow fits my specific engine?
Verify your engine model and year against the compatibility table provided. For absolute certainty, check the part number stamped on your existing bellow and compare it to the numbers in our Part Number Matrix.
What are the signs of a failing exhaust bellow?
Common signs include visible cracks or splits in the rubber, excessive exhaust fumes in the engine bay, or water leaking from the bellow connections. A damaged bellow can lead to serious engine damage if not replaced.
How often should this part be replaced?
Exhaust bellows are a regular maintenance item. We recommend inspecting them annually and replacing them every 3-5 years, or immediately if you notice any signs of wear, cracking, or damage.
Is it difficult to install this part myself?
For those with mechanical experience, the replacement is straightforward. However, access can be tight depending on the boat model. If you are not comfortable working on your engine's exhaust system, we recommend professional installation.
OEM vs. Aftermarket?
This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.
Shipping speed & cost?
We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.
Warranty & returns?
Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.
Safety & Important Info
- Verify images/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
- This is an aftermarket replacement, not an OEM component.
- Professional installation is recommended for safety and performance.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
- Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
- Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.
Payment & Security
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