SKU: 90243922680

Volvo Penta 21389074 Saildrive Bellows Kit - Complete Rubber Diaphragm Seal for 110S 120S 130S 150S MS25S

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Description

Volvo Penta 21389074 Saildrive Bellows Kit - Complete Rubber Diaphragm Seal for 110S 120S 130S 150S MS25SVolvo Penta 21389074 Saildrive Bellows Kit This saildrive bellows kit is a direct replacement for Volvo Penta 21389074, designed to create a watertight barrier between the saildrive unit and the hull. It is a critical component for preventing water intrusion and protecting the engine from potential damage. Engineered to accommodate engine movement and vibration, the assembly ensures a secure and durable seal. Manufactured from a marine grade EPDM NBR

Volvo Penta 21389074 Saildrive Bellows Kit

This saildrive bellows kit is a direct replacement for Volvo Penta 21389074, designed to create a watertight barrier between the saildrive unit and the hull. It is a critical component for preventing water intrusion and protecting the engine from potential damage. Engineered to accommodate engine movement and vibration, the assembly ensures a secure and durable seal.

Manufactured from a marine-grade EPDM/NBR rubber compound, this bellows is resistant to saltwater, fuel, oil, and temperature extremes ranging from -40°C to +120°C. It is designed to replace Volvo Penta part numbers 21389074, 872026, 854934, and 21112450.

  • Fits 110S, 120S, 130S, 150S, and MS25S series saildrives.
  • Engineered for a durability of over 500,000 flex cycles.
  • Kit includes all necessary gaskets, plates, and hardware for a complete installation.

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across brands.

Brand Part Number
Volvo Penta 21389074
Volvo Penta 872026
Volvo Penta 854934
Volvo Penta 21112450

Compatible Engine Models

Confirm your engine model/year in the table below.

Brand Model Series Rated HP Years Notes
Volvo Penta 110S Series 10-15 HP 1985-2010 Single-cylinder
Volvo Penta 120S Series 18-22 HP 1990-present All variants A-E
Volvo Penta 130S Series 25-30 HP 1995-present All variants
Volvo Penta 150S Series 35-40 HP 1995-2020 Three-cylinder
Volvo Penta MS25S Series 20-25 HP 1990-2015 All variants

Technical Specifications

Specification Value
Part Number 21389074
Gross Weight 1.5 kg (3.31 lbs)
Material Marine-grade EPDM/NBR rubber
Temperature Range -40°C to +120°C (-40°F to +248°F)
Pressure Rating 2.5 bar (36.3 psi)
Cycle Life 500,000+ flex cycles
Warranty 1 Year

Package Contents

  • Main rubber bellows assembly
  • Comprehensive gasket set
  • Cover plate and sealing components
  • Installation hardware
  • Detailed instructions

Installation Guide

Warning: Bellows failure can lead to rapid water intrusion. Replacement is a critical safety task. Professional installation is recommended, especially for those with limited mechanical experience.

  1. Preparation: Safely haul the vessel out of the water and secure it. Ensure the engine is properly supported before detaching the saildrive.
  2. Access: Clear the engine compartment to gain full access to the saildrive and bellows assembly.
  3. Disassembly: Carefully detach the saildrive unit from the hull and engine, following the manufacturer's specific procedures for your model.
  4. Removal: Remove the old bellows, clamp, and sealing components. Thoroughly clean the mounting surfaces on both the hull and the saildrive unit.
  5. Inspection: Inspect the saildrive unit for any signs of wear, corrosion, or damage before proceeding.
  6. Installation: Fit the new bellows, gaskets, and cover plate. Ensure all components are correctly aligned.
  7. Securing: Install and tighten all hardware to the manufacturer's specified torque values. This step is critical for a watertight seal.
  8. Reassembly: Reattach the saildrive unit to the engine and hull.
  9. Final Checks: Once the vessel is back in the water, immediately check for any signs of leaks around the new bellows. Monitor closely during the first few hours of operation.

Troubleshooting & FAQ

Q: How often should I replace my saildrive bellows?
A: It is recommended to replace the bellows every 7 years or 500 operating hours, whichever comes first. Regular visual inspection for cracks or wear is also advised.

Q: Can I install this myself?
A: Yes, if you have intermediate mechanical skills and the proper tools (socket set, torque wrench, engine support). However, due to the critical nature of this part, professional installation is recommended to ensure a safe and leak-proof result.

Q: What are the warning signs that my bellows needs immediate replacement?
A: Any water discovered in the engine compartment or bilge, visible cracks or perishing in the rubber, unusual vibration from the saildrive unit, or oil contamination on the bellows surface are all critical warning signs.

Q: What is the difference between an OEM part and thiskit?
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.
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 90243922680

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Nicholas Kiefer
Fort Morgan, US
★★★★★ 5
Amazingly great product!
Color: Grilled color
I’m not just saying this, ok, this is not hyperbole: this is THE best nylon bone for chewing that I have ever purchased. And you get TWO of them for relatively less expensive than most chew toys give you one! I have 2 golden retrievers, and if you know goldens, you know that they are some of the most relentless and powerful chewers around. So I can’t give them almost any toy other than rubber stuff or it will be destroyed in a period of time that doesn’t make it worth it. One of them even figured out how to destroy a supposedly indestructible toy made out of kevlar! She was able to get into it through the seam, which is not kevlar ha ha. Anyway, I digress; I never even considered nylon chews because they suck! Usually. Usually my dogs in the past have lost interest with them in less than a day. I took a chance on these mainly because of the novel shapes, the fact that they give you two, and the low price. Both my goldens LOVE these! Not just for one day, but going on weeks now! I don’t know if it’s the flavor or what, but I will see them gnawing on one of them at some point every day. And they CAN’T destroy them (I knew nylon was good for that, but it was the “who cares” attitude of my previous dogs toward nylon that kept me away). Both the “ribs” and “steak” (quite clever) are a bit worn on the edges now, but they look like they will be around for years. You can’t go wrong with this product (unless for some reason your dog does not like the flavor, but the flavor seems to be what draws my dogs to them). I highly recommend this (these) as the most cost-effective chew toy I’ve ever purchased.
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Reviewed in the United States on November 1, 2025
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Sue Roob
Fort Morgan, US
★★★★★ 4
Great for larger dogs
Color: Grilled color
I think they were heavy duty and durable, but they were too heavy for my dog. The seller was excellent though!
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Reviewed in the United States on May 31, 2026
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Rodney
Birmingham, US
★★★★★ 5
Dog chew toys
Color: Grilled color
Smaller than expected but dogs liked it.
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Reviewed in the United States on May 28, 2026
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Shulamit Saeger
Phoenix, US
★★★★★ 3
It ok but a bit small for my golden and I have to supervise him.
Color: Grilled color
I don't recommend. Too big for my small dog. Too small for my big dog. They have similar bones but these just seem odd. ** WELL actually after some time they both will chew on them, especially my golden. Do be careful watch the dog while chewing. My home health care aid thought they were real. they are holding up well.
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Reviewed in the United States on December 31, 2025
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Kati
San Leandro, US
★★★★★ 5
Finally a chew toy my aggressive chewer can’t destroy
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I’ve gone through countless “indestructible” dog toys that lasted maybe a day—sometimes only minutes. My dog is an aggressive chewer and treats most toys like a personal challenge. These Fuufome chew toys are the real deal. Right out of the box, you can tell they’re made from tough, high-quality nylon. My dog went to work on them immediately, and days later there’s barely any noticeable wear. No chunks missing, no sharp edges, and no mess on the floor. That alone puts these way above most toys I’ve tried. I also love that they actually keep my dog busy. Instead of getting bored and looking for something else to chew (like furniture), she’ll settle in and happily gnaw on these for a long time. It’s been great for mental stimulation and for redirecting destructive chewing. The fact that you get two durable toys in the pack is a bonus, and they’ve held up exactly as advertised. If you have a large breed or an aggressive chewer and you’re tired of wasting money on toys that don’t last, these are absolutely worth it. Highly recommend—this is one of the few chew toys that has truly lived up to the “indestructible” claim. 🐶💪
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Reviewed in the United States on January 2, 2026

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