Drive Bellows for Volvo Penta AQ, BB, MB and MD Series – Replaces 875827, 875512 and 804186

Product Details

This aftermarket drive bellows is designed for Volvo Penta stern-drive and out-drive applications. It is a replacement bellows for the u-joint and drive assembly on the compatible models listed below.

The product is associated with Sierra Marine reference 18-2755 and replaces the listed Volvo Penta references 875827, 875512, 804186 and 875827-8. Confirm the exact model and installation arrangement before ordering.

• Aftermarket rubber drive bellows for compatible Volvo Penta marine applications.
• Designed for installation between the compatible drive and transom assembly.
• Sold as one drive bellows; clamps, adhesive and other installation hardware are not confirmed as included.

Part Number Matrix

Use these references to compare the replacement with the part being removed. Reference numbers do not replace model and application verification.

Engine & Model Compatibility

The company fitment data identifies the following Volvo Penta engine and drive applications. Where a year, horsepower or cylinder count is provided, it is shown below; blank fields mean that detail was not specified in the source data.

Technical Specs

Product Type

Drive bellows

Application

Volvo Penta stern-drive and out-drive systems

Installation Location

U-joint and transom drive assembly

Product Configuration

Single replacement bellows

Aftermarket Reference

Sierra Marine 18-2755

Replacement References

Volvo Penta 875827, 875512, 804186 and 875827-8

What’s in the Box

• 1 x Drive bellows
• Clamps, adhesive and additional installation hardware are not confirmed as included.

Installation Notes

1. Switch off the engine and disconnect the battery according to the procedures in the service manual.
2. Remove the sterndrive or drive assembly as required by the official service procedure for your application.
3. Remove the existing bellows and inspect the drive, transom and mounting surfaces for corrosion, damage or contamination.
4. Clean the mounting surfaces thoroughly and verify that the replacement bellows matches the original profile and application.
5. Obtain the correct clamps, adhesive or other installation hardware if required; these items are not confirmed as part of this product.
6. Install the bellows without twisting or stretching it beyond the procedure specified in the service manual.
7. Secure the bellows using the correct hardware and tightening method for the drive model.
8. Reassemble the drive and inspect the installation for proper seating before returning the boat to service.
9. Because bellows installation can affect watertight integrity and drive protection, professional installation is recommended.

Troubleshooting & FAQ

Safety & Important Info

• Verify the exact engine model, year, drive configuration and original bellows before ordering.
• Do not rely on horsepower or a reference number alone to establish fitment.
• Installation requires the correct clamps and any other hardware specified by the service manual; these are not confirmed as included.
• Professional installation is recommended because an incorrectly installed bellows can allow water intrusion or damage to the drive assembly.
• This is an aftermarket replacement, not an OEM component.

About Sea Sierra

• Marine Replacement Parts — We supply replacement components for a range of marine engine and drive applications.
• Application-Focused Listings — Product pages provide available model and reference-number information to support compatibility checks.
• Customer Support — Contact support with the engine model, drive details and original part references when application assistance is needed.