Cummins 5.9L B Series Aftercooler Service Kit (B) Oring Kit MRC4025341-13B
Big Burjo's Marine offers the Cummins 5.9L B Series Aftercooler Service Kit (B) O-Ring Kit, model MRC4025341-13B, a non-OEM replacement part from Mr Cool (USA) designed for marine cooling systems. This O-Ring service kit is used on the aftercooler assembly and is supplied under the Marine Energy Systems line for reliable heat exchangers & coolers, delivering an essential marine parts solution for boat parts maintenance. Designed to fit Cummins 5.9L B Series applications, it helps seal the aftercooler and maintain optimal cooling performance on your vessel.
Free delivery Australia-wide on orders over $350. Delivery to every marina, port, coastal town in Australia, including Manly Harbour, Townsville Marina, and Rose Bay Marina, ensuring you can service your engine wherever you are. We ship across the country to support Aussie boaters from coastline to coastline.
Details
Full specifications, features and technical details for this product are listed in the description above. Need help checking compatibility with your vessel, caravan or 4x4? Contact our Gold Coast team on 0416 180 996 or sales@bigburjos.com and we'll confirm fitment before you order.
Shipping & Returns
Shipping (Australia-wide): Orders over $350 AUD ship free. Orders under $350 have a $15 AUD flat-rate delivery fee. Standard delivery takes 3–11 business days depending on your location; express options (1–3 business days) are available at checkout. Orders are dispatched within 1–2 business days.
Returns: We offer a 30-day return policy. Items must be unused and in original packaging. Contact us at sales@bigburjos.com or 0416 180 996 to start a return. See our full Shipping Policy and Refund Policy for details, including your rights under Australian Consumer Law.