Heat Exchanger Seal Kit for Yanmar 3YM15 3YM20 3YM30 - Replaces 128990-44100
Heat Exchanger Seal Kit for Yanmar 3YM15 3YM20 3YM30 - Replaces 128990-44100
Heat Exchanger Seal Kit for Yanmar 3YM15 3YM20 3YM30 - Replaces 128990-44100
Heat Exchanger Seal Kit for Yanmar 3YM15 3YM20 3YM30 - Replaces 128990-44100
Heat Exchanger Seal Kit for Yanmar 3YM15 3YM20 3YM30 - Replaces 128990-44100
Heat Exchanger Seal Kit for Yanmar 3YM15 3YM20 3YM30 - Replaces 128990-44100
Heat Exchanger Seal Kit for Yanmar 3YM15 3YM20 3YM30 - Replaces 128990-44100
Heat Exchanger Seal Kit for Yanmar 3YM15 3YM20 3YM30 - Replaces 128990-44100

Heat Exchanger Seal Kit for Yanmar 3YM15 3YM20 3YM30 - Replaces 128990-44100

RM3YMWC

  • Dispatched in 2-3 days
  • 30 Day Return Policy
  • In stock, ready to ship
  • Backordered, shipping soon
Our stock levels are dynamic and can change frequently. If a product appears to be in stock, it may have already sold out. Please contact us if you have any questions about availability. Thank you for your understanding.

Regular price £43.20 Sale price£36.00 Save £7.20
/
Tax included.

Yanmar 3YM Series Seal Kit RM3YM-WC

Premium Heat Exchanger Service Solution

Maintenance of your marine engine's cooling system is critical to preventing overheating and ensuring long-term reliability. This heat exchanger seal kit is designed specifically for the Yanmar 3YM series, providing a comprehensive solution for servicing the fresh water cooler and exhaust manifold interface.

RELIABILITY: Engineered using high-temperature resistant elastomers and composite materials to meet or exceed original equipment standards.

Kit Contents

  • ✔ 4x Heat Exchanger O-Rings
  • ✔ 1x Exhaust Manifold Gasket
  • ✔ Precision-molded for leak-free seal
  • ✔ Resists salt water & coolant additives

Technical Specs

Part Number: RM3YM-WC
O-Ring Material: Heat-Stabilized Nitrile
Gasket Type: Composite Manifold Seal
Total Pieces: 5 Components

Compatibility / Fitment Guide

Engine Series Specific Models System
Yanmar 3YM 3YM15 Fresh Water Cooling
Yanmar 3YM 3YM20 Fresh Water Cooling
Yanmar 3YM 3YM30, 3YM30AE Fresh Water Cooling

OEM Cross Reference

Yanmar (O-Ring) 128990-44100 (x4)
Yanmar (Gasket) 119717-13110 (x1)
Recambios Marinos RM3YM-WC

Questions & Answers

Is this a genuine original part?

This is a premium quality aftermarket replacement part from Recambios Marinos, manufactured to meet or exceed original equipment (OE) standards for marine environments.

How do I know if it is compatible?

We recommend checking your engine model. This kit is specifically for the 3-cylinder 3YM series (15, 20, and 30hp versions). If your heat exchanger uses the 128990-44100 o-rings, this is the correct kit.

What components are included in this kit?

The kit includes a total of 5 items: four O-rings for the heat exchanger end caps and one main exhaust manifold gasket to ensure a complete service of the cooling interface.

Note: Please verify your engine model and part numbers against the references above before purchasing. Distributed by 4boats.co.uk.

For the products under £150 the shipping is £6.99.

Free delivery for most items over £150.

This site is protected by hCaptcha and the hCaptcha Privacy Policy and Terms of Service apply.


Recently viewed

Why choose us

Untitled_1080_x_1080_px_1 - 4Boats

QUALITY MARINE PARTS

We source dependable marine products from established suppliers and continually refine our range using customer feedback.

Untitled_1080_x_1080_px_2 - 4Boats

TRUSTED SUPPLIERS

We work with trusted marine suppliers and distribution partners to provide reliable parts, equipment and fulfilment.

Simple_Image_Play_Built_into_Routine_Cosmetics_TikTok_In-Feed_Ad_1080_x_1080_px_10 - 4Boats

PERSONAL SERVICE

Every order is checked by the 4Boats team. Contact us before ordering if you need help with part numbers, compatibility or availability.