Exhaust Bellows Kit 3852696*2 for Volvo Penta OMC 4.3-8.2L

Upper Exhaust Bellows Kit for Volvo Penta & OMC Cobra Sterndrives

This upper exhaust bellows kit is anreplacement component for Volvo Penta and OMC Cobra sterndrive applications. It provides a flexible connection for the exhaust system, accommodating engine movement and vibration. This kit is a direct replacement for OEM part number 3852696 and its equivalents.

Engineered for the harsh marine environment, each bellows is made from a durable EPDM rubber compound and includes 316 stainless steel clamps for secure, corrosion-resistant installation. The design meets or exceeds original equipment manufacturer (OEM) specifications for fit and function, ensuring a reliable seal and proper exhaust routing.

• Fits a wide range of Volvo Penta (4.3L-8.2L) and OMC Cobra engines.
• Directly replaces OEM P/N: 3852696, Sierra 18-2779, GLM 89224, and Mallory 9-72802.
• Kit includes two bellows and four stainless steel clamps for a complete installation.

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

Package Contents

• 2 x Upper Exhaust Bellows (Replaces OEM P/N 3852696)
• 4 x Stainless Steel Clamps (316 Marine Grade)
• 1 x Installation Guide
• 1 x Warranty Registration Card

Installation Guide

1. Preparation: Ensure the engine is cool and disconnect the battery. Remove the engine cover to access the exhaust system.
2. Removal: Loosen the clamps on both ends of the old bellows. Carefully remove the bellows, supporting adjacent exhaust components to prevent strain.
3. Surface Cleaning: Clean all connection surfaces on the engine and exhaust components. Remove any old sealant, carbon deposits, or corrosion.
4. Installation: Position the new bellows with the correct orientation. Slide the new clamps into place before fully seating the bellows connections.
5. Tightening: Tighten the clamps evenly in an alternating pattern to the recommended torque specification of 15-20 ft-lbs (20-27 Nm) to ensure a secure seal without damaging the rubber.
6. Testing: Reconnect the battery. Perform a leak check and run the engine under controlled conditions, visually inspecting for proper alignment and any leaks.

Troubleshooting & FAQ

How often should I replace the exhaust bellows?
Inspect the bellows annually or every 100 hours. Replace them immediately if you see any signs of surface cracking, hardening or softening material, clamp slippage, or exhaust leaks. Proactive replacement every 5-7 years is recommended to prevent failure.

What are common installation mistakes to avoid?
The most frequent error is installing the bellows in the wrong orientation, which can restrict movement and cause premature failure. Also, ensure clamps are positioned correctly and not overtightened, which can damage the bellows.

How do I detect an exhaust leak?
Signs of a leak include the smell of exhaust fumes in the engine bay, visible exhaust vapor, or water entering the exhaust system. You can perform a visual inspection or a smoke test to pinpoint the exact location of a leak.

OEM vs. Aftermarket?
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.

How fast do you ship and how much does it cost?
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.

What is your warranty and return policy?
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.