Professional Marine Bellows Kit 876294 & 876631 - Complete U-Joint & Exhaust Set for Volvo Penta AQ/DP/SP/DPX Series (200-500HP)

Professional Marine Bellows Kit 876294 & 876631 - Complete U-Joint & Exhaust Set for Volvo Penta

This is a completebellows replacement kit for a wide range of Volvo Penta sterndrive engines, including the AQ, DP, SP, and DPX series. The kit provides a direct replacement for both the U-joint drive bellows (OEM 876294, 875826) and the exhaust bellows (OEM 876631, 875848-4), ensuring comprehensive service for the sterndrive system.

Both bellows are manufactured from a high-grade marine neoprene rubber compound designed to resist degradation from fuel, oil, and saltwater. The characteristic accordion-style folds allow for necessary flexibility while maintaining watertight integrity. The kit includes the necessary 316 stainless steel clamps for secure, corrosion-resistant installation.

• Complete System: Includes both U-Joint and Exhaust bellows for a full replacement.
• Verified Compatibility: Fits over 100 Volvo Penta engine models across multiple series.
• Professional Grade: Meets or exceeds all OEM specifications and is manufactured in an ISO9002 certified facility.

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM andbrands.

Compatible Engine Models

Confirm your engine model/year in the table below.

Technical Specifications

Material Engineering Excellence: The bellows are manufactured using a specialized molding process that creates the characteristic accordion-style folds necessary for flexibility while maintaining watertight integrity. The marine-grade neoprene compound resists degradation from fuel, oil, and saltwater exposure, ensuring years of reliable service even in the harshest marine environments.

Package Contents

• 1x U-Joint Drive Bellows (Replaces 876294/875826)
• 1x Exhaust Bellows (Replaces 876631/875848-4)
• 4x Marine-Grade 316 Stainless Steel Clamps
• 1x Professional Installation Guide
• 1x Maintenance Schedule Recommendations

Installation Guide

Professional installation is strongly recommended due to the complexity of sterndrive removal and the precision required for proper bellows alignment and sealing.

Required Tools and Materials

• Sterndrive Alignment Tool (Volvo Penta Special Tool)
• Calibrated Torque Wrench
• Marine-Grade Sealant (e.g., Perfect Seal)
• Basic Hand Tools (Wrenches, Screwdrivers)
• Safety Equipment (Gloves, Eye Protection)

Installation Overview

1. Preparation: Drain the sterndrive gear oil completely. Disconnect the boat's battery and all electrical connections to the sterndrive.
2. Disassembly: Remove the propeller and trim tab assemblies. Disconnect shift and throttle cables from the drive unit.
3. Sterndrive Removal: Remove the main sterndrive mounting bolts. Carefully extract the sterndrive unit from the transom shield using proper lifting equipment.
4. Bellows Replacement: Remove the old bellows and their clamps. Thoroughly clean all mounting surfaces on the sterndrive and transom shield.
5. Sealant Application: Apply a thin, even layer of marine-grade sealant to the bellows mounting surfaces before installing the new parts.
6. New Bellows Installation: Install the new U-joint and exhaust bellows, ensuring correct orientation. Crucially, the small pinhole in the exhaust bellows must face downward to allow for water drainage.
7. Clamping: Secure the new bellows with the provided stainless steel clamps. Use a torque wrench to tighten all clamps to the specified 25-30 Nm (18-22 ft-lbs).
8. Reassembly: Reinstall the sterndrive, using an alignment tool to ensure it is perfectly aligned with the engine coupler. Misalignment can cause premature bellows failure.
9. Finalization: Reconnect all cables and electrical connections. Refill the sterndrive with fresh gear oil and perform a leak check before returning the vessel to service.

Troubleshooting & FAQ

Q: How do I confirm this kit will fit my engine?
A: This kit is designed for a broad range of Volvo Penta sterndrives made from 1975 to the present. Please review the 'Compatible Engine Models' table on this page and cross-reference your engine's series and model number to ensure a match.

Q: How often should I replace my sterndrive bellows?
A: Volvo Penta recommends inspection at least annually and replacement every 500 operating hours or 5 years, whichever comes first. For boats used in saltwater, this interval should be shortened to every 2-3 years due to the harsher environment.

Q: What are the warning signs of a failing bellows?
A: Immediate replacement is required if you see visible cracks or tears in the rubber, find water in your engine compartment, or notice that your gear oil has a milky appearance, which indicates water contamination. Unusual noises or changes in handling can also be signs of a compromised bellows.

Q: How is this professional kit different from cheaper alternatives?
A: Our kit uses a marine-grade neoprene compound with UV stabilizers and provides 316 stainless steel clamps for superior corrosion resistance. Unlike some budget alternatives, our components undergo strict quality control and are precision-molded to ensure a perfect fit that meets or exceeds OEM specifications.

Q: OEM vs. Aftermarket?
A: This listing is anreplacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.

Q: How fast do you ship and how much does it cost?
A: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.

Q: What is your warranty and return policy?
A: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.

Important Notes

• Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
• This product is anreplacement part and is not an OEM component.
• Professional installation is recommended to ensure safety and optimal performance.

Why Choose JLM MARINE?

• Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
• Fast Global Shipping: Free delivery worldwide in 5–15 days.
• Direct from Manufacturer: Competitive pricing without compromising quality.