Aftermarket Exhaust Bellows Kit for OMC Volvo Penta 3852741 3863450

Vendor: JLM Marine
Availability: In Stock
Product Type: Bellow
$38.50
$38.50
Subtotal: $38.50

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Aftermarket Exhaust Bellows Kit for OMC Volvo Penta 3852741 3863450 - JLM Marine Boat Parts Limited

Aftermarket Exhaust Bellows Kit for OMC Volvo Penta 3852741 3863450

$38.50

Aftermarket Exhaust Bellows Kit for OMC Volvo Penta 3852741 3863450

$38.50

Aftermarket Exhaust Bellows Kit for OMC Volvo Penta Marine Engines

This is anexhaust bellows kit for OMC and Volvo Penta stern drive engines, serving as a direct replacement for part numbers 3852741 and 3863450. This two-piece kit provides the essential sealing components for reliable operation, protecting the engine from water intrusion and exhaust system failures.

Manufactured from a EPDM rubber compound, these bellows offer exceptional resistance to marine environmental conditions, including saltwater, ozone, and extreme temperatures. Each component is produced in an ISO9002 certified facility and undergoes rigorous testing to ensure dimensional accuracy and material integrity, meeting or exceeding OEM specifications.

  • Kit Contains: Two exhaust bellows and stainless steel clamps.
  • Function: Seals the exhaust passage between the transom and the stern drive.
  • Compatibility: Fits a wide range of OMC and Volvo Penta engines from 1986-1993 and beyond.

Part Number Cross-Reference

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

Manufacturer Part Numbers
OMC Original 3852741, 0778066, 0778067, 0911741, 0913591, 0913592, 3852742
Volvo Penta Original 3863450, 3852741, 3852742
Sierra Marine 18-2780, 18-2781, 18-2780-1
GLM Marine 89222, 89230
Mallory Marine MAL9-72800, 9-72800
Orbitrade 19450, ORB19450
CEF 500539, CEF500539

Compatible Engine Models

Confirm your engine model/year in the table below.

OMC / Johnson / Evinrude Applications (1986-1993)

Engine Model Years
2.3L 1989-1991
4.3L V6 1987-1989
5.0L All Years
5.7L 1989-1991
5.8L All Years

Volvo Penta Applications

Gasoline Engines (1986-1991)

Engine Model/Series Notes
2.3L 1987-1988
2.5L All years
3.0L All variants including GLP-C, GLP-D, GLP-J, GXi-J, GXiC-J
4.3L All variants including GXi-225-R, GXi-FF, OSi-F, OSi-GF, OSi-J
5.0L All variants including GXi-270-R, GXiE series, OSi series
5.7L All variants including Gi-300, GiE-300, GXiE, OSi-300, OSXi series
5.8L FL, FS variants
7.4L All variants
8.1L All variants including Gi-FF, GXi-DF, GXiE, OSi series

Diesel Engines

Engine Model/Series
D3-130A-A, D3-140A-D/E/F, D3-160A-A
D3-170A-D/E/F, D3-200A series
D3-220A-E/F

Technical Specifications

Length 129mm (5.08 inches)
Inner Diameter 86-91mm (3.39-3.58 inches)
Outer Diameter 102-106mm (4.02-4.17 inches)
Material EPDM rubber compound
Temperature Range -40°F to +250°F (-40°C to +121°C)
Pressure Rating 15 PSI continuous operation
Certification ISO9002
Gross Weight 910g
Package Dimensions 23cm x 15cm x 13cm
Product Volume 4485 cm³

Package Contents

  • This is a combined kit containing two different bellows: 1x Part Number 3852741 and 1x Part Number 3863450.
  • 4x Stainless steel mounting clamps
  • Installation hardware
  • Detailed installation instructions sheet
  • Technical support access information

Installation Guide

  1. Preparation: Remove the stern drive unit from the transom assembly to access the bellows mounting locations.
  2. Surface Cleaning: Thoroughly clean both mounting surfaces on the stern drive and transom. Remove all old adhesive, sealant, and any corrosion or marine growth.
  3. Inspect Surfaces: Check the cleaned surfaces for any damage, deep scratches, or irregularities that could prevent a proper seal.
  4. Apply Adhesive: Apply a thin, even layer of marine-grade bellows adhesive to both mounting surfaces.
  5. Position Bellows: Use a bellows expander tool to stretch the new bellows and carefully slide them into position. Ensure they are properly seated without any folds or twists.
  6. Secure Clamps: Position the stainless steel clamps over the bellows ends and tighten them securely with a 5/16" nut driver. Ensure even pressure and do not overtighten.
  7. Final Check: Verify the bellows are correctly aligned and the clamps are torqued to specification before reinstalling the stern drive.

Troubleshooting & FAQ

How do I know if my exhaust bellows are failing?
Common symptoms include water intrusion in the bilge (a critical failure), excessive exhaust noise when the drive is trimmed up, or visible signs of deterioration like surface cracks, delamination, or swelling of the rubber.

How often should I replace the exhaust bellows?
Regular inspection is recommended annually. Replacement is advised every 2-5 years, depending on operating conditions such as saltwater exposure, hours of use, and whether the boat is stored with the stern drive in the up or down position.

What can I do to make the bellows last longer?
Avoid storing the boat with the stern drive in the fully raised position for extended periods, as this puts constant stress on the rubber. Also, ensure your engine's cooling system is properly maintained to prevent overheating, which can accelerate rubber deterioration.

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.

We can ship to virtually any address in the world with free shipping available for most regions.

For our typical US and Canadian customers , our shipping timeframes are as follows:

  • Amazon FBA: orders will be delivered within 1-5 business days after placing the order (during certain special periods such as major promotions, Christmas, etc., the delivery time of Amazon FBA may be affected).
  • US warehouse shipment: orders will be delivered within 5 days after placing the order.
  • China warehouse shipment: orders will be delivered about 12 days after placing the order.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

Founded in 2002, JLM Marine has established itself as a dedicated manufacturer of high-quality marine parts, based in China. Our commitment to excellence in manufacturing has earned us the trust of top marine brands globally.

As a direct supplier, we bypass intermediaries, which allows us to offer competitive prices without compromising on quality. This approach not only supports cost-efficiency but also ensures that our customers receive the best value directly from the source.

We are excited to expand our reach through retail channels, bringing our expertise and commitment to quality directly to boat owners and enthusiasts worldwide.

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