/live/media/G6/G6_1204050_Ang.jpg)
GMB 120-4050 Engine Water Pump
| Brand | GMB 120-4050 |
|---|---|
| Pulley Included | Yes |
| Mounting Hardware Included | 1 o-ring |
| Hub Height | 3.93 |
| Impeller Material | Plastic |
| Impeller Rotation | Reverse |
| Includes Back Housing | No |
| Water Pump Drive Type | Serpentine belt |
| Gaskets Included | Yes |
| Hub Diameter (in) | 3.23 |
| Instructions Included | Yes |
| Material | Cast iron |
| Pulley Type | Serpentine belt |
| Fits | Ram · 14 vehicles |
OE-spec replacement. Manufactured to meet or exceed OEM specifications.
Cast iron construction. Delivers durable, dependable cooling system performance.
Complete installation kit. Includes pulley, gasket, and O-ring for a smoother install.
Cross-references 68445352AA and 68569196AA for the same application. See all 2.
Engine Water Pump for Ram Heavy Duty Cooling
This GMB engine water pump is manufactured to meet or exceed OEM specifications for dependable cooling performance. Built for Ram 2500 and Ram 3500 applications, GMB 120-4050 supports proper coolant circulation in demanding truck use.
Key Features
- Fits 2019-2025 Ram 2500 and 2019-2025 Ram 3500
- Serpentine belt drive type with matching serpentine belt pulley
- Reverse impeller rotation for the specified cooling system design
- Cast iron housing for durable service
- Plastic impeller for efficient coolant movement
- Pulley included for direct replacement setup
- Gaskets included and 1 O-ring mounting hardware included
- Instructions included for installation reference
- Part number 120-4050 for easy identification
Detailed Description
GMB 120-4050 is an engine water pump engineered for Ram 2500 and Ram 3500 trucks from 2019 through 2025. It uses a serpentine belt drive, reverse impeller rotation, and a cast iron body with a plastic impeller to match the original cooling system layout. The included pulley, gaskets, and instructions support a straightforward replacement process, while the hub dimensions and OE-level construction help maintain proper belt alignment and coolant flow. This part cross-references Mopar 68445352AA and 68569196AA for the same application.
Common Cooling System Issues It Can Address
- Coolant leaks from a worn pump seal or housing
- Overheating caused by reduced coolant circulation
- Belt noise or drive issues related to a failing pump pulley assembly
- Temperature fluctuations in Ram 2500 and Ram 3500 cooling systems
- Service replacement for a worn original water pump
Installation Notes and Tips
Verify reverse rotation, pulley style, and hub dimensions before installation. Replace the included gasket and O-ring during service, and inspect the serpentine belt, tensioner, and cooling hoses for wear while the system is open. Proper coolant fill and air bleeding are important after installation on Ram 2500 and Ram 3500 applications. Confirm fitment by model year and engine configuration before ordering GMB 120-4050.
Quality Assurance
GMB manufactures this water pump to meet or exceed OEM specifications, making it a direct-fit replacement option for the listed Ram truck applications.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2025 | Ram | 2500 | 6.7L | L6 | N/A | — |
| 2025 | Ram | 3500 | 6.7L | L6 | N/A | — |
| 2024 | Ram | 2500 | 6.7L | L6 | N/A | — |
| 2024 | Ram | 3500 | 6.7L | L6 | N/A | — |
| 2023 | Ram | 2500 | 6.7L | L6 | N/A | — |
| 2023 | Ram | 3500 | 6.7L | L6 | N/A | — |
| 2022 | Ram | 2500 | 6.7L | L6 | N/A | — |
| 2022 | Ram | 3500 | 6.7L | L6 | N/A | — |
| 2021 | Ram | 2500 | 6.7L | L6 | N/A | — |
| 2021 | Ram | 3500 | 6.7L | L6 | N/A | — |
| 2020 | Ram | 2500 | 6.7L | L6 | N/A | — |
| 2020 | Ram | 3500 | 6.7L | L6 | N/A | — |
| 2019 | Ram | 2500 | 6.7L | L6 | N/A | — |
| 2019 | Ram | 3500 | 6.7L | L6 | N/A | — |
| No rows match your filter. | ||||||