Exhaust Bellows Kit – Fits Volvo Penta AQ/DP Sterndrive Engines (Replaces 876631, 876294)

$56.70

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Product Details

This marine Exhaust Bellows Kit – Fits Volvo Penta AQ/DP Sterndrive Engines is an essential replacement component designed for sterndrive models in the Volvo Penta AQ and DP series. The kit provides the necessary parts to maintain the integrity of your engine's exhaust system, prevent water from entering the engine, and ensure reliable performance.

This kit serves as a direct replacement for Volvo Penta part numbers 876631 and 876294, as well as Sierra equivalents 18-2758 and 18-2744.

Engineered for direct, clamp-on installation.
Constructed from heavy-duty, marine-grade rubber for durability.
Includes essential components like bellows and stainless steel clamps for a complete service.

Part Number Matrix

Use this matrix to confirm equivalent references across OEM and aftermarket.

Brand	Part Number	Notes
Volvo Penta	876631	Exhaust Bellows
Volvo Penta	876294	Drive Bellows Kit
Sierra	18-2758	Exhaust Bellows
Sierra	18-2744	Drive Bellows Kit

Engine & Model Compatibility

Confirm your engine model/year in the table below.

For Volvo Penta: This kit is designed for a wide range of sterndrive models. Please verify your specific model is listed.

Brand	Model	OEM Part No.	Notes
Volvo Penta	200	876631, 876294	For sterndrive models
Volvo Penta	250	876631, 876294	For sterndrive models
Volvo Penta	270, 270T	876631, 876294	For sterndrive models
Volvo Penta	275, 275A	876631, 876294	For sterndrive models
Volvo Penta	280, 280DP, 280PT, 280T	876631, 876294	For sterndrive models
Volvo Penta	285A	876631, 876294	For sterndrive models
Volvo Penta	290, 290A, 290DP, 290DPA	876631, 876294	For sterndrive models
Volvo Penta	DP-A, DP-A1, DP-A2	876631, 876294	Sterndrive units
Volvo Penta	DP-B, DP-B1	876631, 876294	Sterndrive units
Volvo Penta	DP-C, DP-C1	876631, 876294	Sterndrive units
Volvo Penta	DP-D, DP-D1	876631, 876294	Sterndrive units
Volvo Penta	DP-E	876631, 876294	Sterndrive units
Volvo Penta	DP-G	876631, 876294	Sterndrive units
Volvo Penta	DPH, DPX	876631, 876294	Sterndrive units
Volvo Penta	SP-A, SP-A1, SP-A2	876631, 876294	Sterndrive units
Volvo Penta	SP-C, SP-C1	876631, 876294	Sterndrive units
Volvo Penta	SP-E	876631, 876294	Sterndrive units

Technical Specs

Product Type: Exhaust Bellows Kit
Installation: Direct replacement
Connection: Clamp-on
Housing Material: Rubber (heavy-duty marine grade)
Housing Color: Black
Dimensions: Exhaust Bellows: 4" ID (small end), 5" ID (large end) [approximate]
Fitting Type: Clamp-on with stainless steel clamps
Other Technical Attributes: Includes exhaust bellows with flaps

What’s in the Box

Package contents may vary slightly between aftermarket manufacturers. A complete kit typically includes:

1 x Exhaust Bellows with Flaps (Replaces 876631/876633)
1 x Drive Bellows Kit with Stainless Steel Clamps (Replaces 876294)
1 x Water Hose Kit with Stainless Steel Clamp (Replaces 875822) [Note: Included in some, but not all, kits]

Installation Notes

Professional installation is recommended. The following are general, model-agnostic steps:

Disconnect the boat's battery and ensure the engine is off and cool. Place the sterndrive in the fully tilted "up" position for access.
Carefully remove the old bellows by loosening and removing the retaining clamps. You may need to cut the old bellows for easier removal.
Thoroughly clean the mounting surfaces on the transom housing and the sterndrive. Remove any old sealant, rubber residue, or corrosion.
Fit the new bellows into position. Ensure they are seated correctly and not twisted or pinched.
Secure the new bellows with the provided stainless steel clamps. Tighten the clamps firmly to create a watertight seal, but do not overtighten.
Double-check that all components are secure. Lower the sterndrive and test the installation in the water, carefully checking for any leaks around the bellows.

Troubleshooting & FAQ

How do I know if this bellows kit will fit my engine?

The best way to ensure fitment is to check your model against the compatibility table provided on this page. Also, cross-reference the OEM part numbers (876631, 876294) with your engine's service manual or existing parts.

What are the signs my exhaust bellows need replacement?

Common signs of failure include visible cracks, splits, or perishing of the rubber. You may also notice excessive exhaust noise, or more critically, water entering the bilge, which indicates a leak.

How often should I inspect or replace my sterndrive bellows?

Bellows should be inspected at least annually as part of your regular maintenance schedule. Replacement intervals vary based on usage (freshwater vs. saltwater) and storage conditions, but a general guideline is every 3-5 years, or immediately if any damage is found.

What is the purpose of the internal flaps in the exhaust bellows?

The internal flaps act as one-way valves. They allow exhaust gases to exit while preventing water from flowing back up into the engine, especially when the boat is coming off plane or in reverse.

Can I reuse my old clamps?

It is strongly recommended to use the new stainless steel clamps included with the kit. Old clamps may have corrosion, fatigue, or stripped threads that prevent a proper seal, leading to catastrophic leaks.

Is this a kit for both the U-joint/drive bellows and the exhaust bellows?

Yes, this comprehensive kit includes both the drive bellows (replaces 876294) and the exhaust bellows (replaces 876631) for a complete service.

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.

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