Vendor : Mishimoto
Product Type : Coolant Reservoirs
Sku : MISMMRT-RAM-19N
Couldn't load pickup availability
The factory expansion tank on your 2019+ Ram 6.7L Cummins is a weak point in an otherwise durable cooling system. Made from plastic, the stock tank becomes brittle over time and is prone to cracking, discoloration, and internal degradation after thousands of heat cycles. Mishimoto's aluminum expansion tank is built to solve that problem before it starts. Its TIG-welded construction holds up under high temperatures and heavy use, while internal baffles prevent coolant starvation and reduce the risk of air pockets that can harm engine cooling.--To make installation simple, this expansion tank fits directly in place of the factory unit and does not require draining the entire cooling system. No specialty tools are needed, and all necessary provisions for factory sensors are included. That includes an OEM-style level sensor that allows the truck's stock low coolant warning system to function exactly as intended.--Beyond durability and ease of install, this expansion tank gives your engine bay a cleaner, more finished look. The Mishimoto expansion tank is available in either micro-wrinkle black or a natural finish, for easy customization through powder-coating, anodizing, or hydro-dipping. It replaces the aging plastic tank with something built to last and designed to look good doing it.--Like all of our products, this expansion tank is backed by the Mishimoto Lifetime Warranty.
Installation InstructionsThis Part Fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2019-2025 | Ram | 2500 | Big Horn |
| 2019-2025 | Ram | 2500 | Laramie |
| 2019-2021 | Ram | 2500 | Laramie Longhorn |
| 2019-2025 | Ram | 2500 | Limited |
| 2021-2025 | Ram | 2500 | Limited Longhorn |
| 2019-2025 | Ram | 2500 | Lone Star |
| 2023-2025 | Ram | 2500 | Rebel |
| 2024-2025 | Ram | 2500 | Special Service |
| 2019-2025 | Ram | 2500 | Tradesman |
| 2019-2025 | Ram | 3500 | Big Horn |
| 2019-2025 | Ram | 3500 | Laramie |
| 2019-2020 | Ram | 3500 | Laramie Longhorn |
| 2019-2025 | Ram | 3500 | Limited |
| 2021-2025 | Ram | 3500 | Limited Longhorn |
| 2019-2022 | Ram | 3500 | Lone Star |
| 2019-2024 | Ram | 3500 | SLT |
| 2024-2025 | Ram | 3500 | Special Service |
| 2019-2025 | Ram | 3500 | Tradesman |
We will be temporarily closed from Monday 10th August until Friday 21st August 2026 while we relocate to our new premises and carry out our annual stock take. Our website will remain open and you are welcome to place orders during this period. However, new orders placed between 11th and 21st August will not be processed or dispatched until we reopen. Please note: Any orders currently open and already in our system will continue to be processed as normal and will not be affected by the temporary closure. If you have an urgent order or require something that cannot wait until we reopen, please contact us via our website chat or email. We will do our best to assist wherever possible. Normal service will resume on Saturday 22nd August 2026. We apologise for any inconvenience this may cause and greatly appreciate your patience and continued support while we complete our relocation and annual stock take. Thank you for your understanding and continued support.
