/live/media/C3/C3_3973_Fro.jpg)
CSF 3973 Drive Motor Inverter Cooler
| Brand | CSF 3973 |
|---|---|
| Core Thickness | 7/8 |
| Core Width | 4 1/4 |
| Core Material | Aluminum |
| Tank Material | No |
| Core Length | 24 7/16 |
| Inlet Diameter | 11/16 right |
| Outlet Diameter | 11/16 left |
| Down Flow Or Cross Flow Type | Cross flow |
| Box Height (in) | 2 15/16 |
| Box Length (in) | 32 13/16 |
| Box Weight (lbs) | 3 |
| Box Width (in) | 7 13/16 |
| Hazardous Material | No |
| Inlet Length (in) | 4 13/16 |
| Inlet Width (in) | 1 3/8 |
| No. Of Rows | 1 |
| Outlet Length (in) | 4 13/16 |
| Outlet Width (in) | 1 3/8 |
| Radiator Cap Supplied | No |
| Tech Note | O.e.m. style plastic tank & aluminum core. upgraded with higher p |
| Fits | Toyota · 8 vehicles |
OE-style design. Plastic tank and aluminum core construction with a stronger B-tube layout.
Cross-flow layout. Engineered for efficient cooling performance in a compact cooler.
CSF engineering. Wind-tunnel tested and built to high performance standards.
Cross-references BBB Industries 14000 and G9010-34010 for the same application. See all 2.
CSF 3973 Drive Motor Inverter Cooler
CSF 3973 is a drive motor inverter cooler built for select Toyota hybrid applications that need stable thermal control under load. It uses an OEM-style plastic tank and aluminum core layout, with an upgraded higher-performance B-tube design for improved cooling efficiency.
Compatible with 2022-2026 Toyota Tundra and 2023-2025 Toyota Sequoia, this CSF inverter cooler is engineered for direct-fit service on the listed applications. The compact cross-flow design and aluminum core construction support consistent heat transfer in demanding driving conditions.
Key Features
- Part number: CSF 3973
- Drive motor inverter cooler for select Toyota hybrid platforms
- OEM-style plastic tank and aluminum core construction
- Upgraded higher-performance B-tube design
- Cross-flow configuration
- Single-row core design
- Core dimensions: 24 7/16 in. length, 4 1/4 in. width, 7/8 in. thickness
- Inlet: 11/16 in. right; outlet: 11/16 in. left
Detailed Description
CSF 3973 is designed for thermal management in the inverter cooling circuit on select Toyota Tundra and Toyota Sequoia models. The aluminum core helps transfer heat efficiently, while the OEM-style tank layout supports proper fitment in the original cooling package. CSF’s manufacturing process is backed by ISO/TSO-certified factories and long-running radiator production experience, with products engineered and wind tunnel tested for cooling performance validation.
This part cross-references BBB Industries 14000 and G9010-34010 for the same application. For buyers searching for a Toyota Tundra inverter cooler, Toyota Sequoia inverter cooler, or CSF 3973 replacement cooler, this unit matches the listed vehicle coverage and cooling layout requirements.
What It Helps Address
- Inverter temperature rise during stop-and-go driving
- Reduced cooling efficiency from a worn or damaged cooler
- Leaks caused by aging plastic tank and core assemblies
- Fitment issues when replacing the original inverter cooler on listed Toyota models
- Thermal stress in hybrid drive system cooling circuits
Installation Notes and Tips
Verify inlet and outlet orientation before installation: inlet is 11/16 in. on the right and outlet is 11/16 in. on the left. Confirm the vehicle is one of the listed applications before ordering, and compare the original cooler’s dimensions and mounting layout to the CSF 3973 unit. This part is intended for 2022-2026 Toyota Tundra and 2023-2025 Toyota Sequoia applications shown in the fitment data.
Quality Assurance
CSF manufactures cooling components in ISO/TSO-certified facilities and validates designs through performance-focused testing. The brand has supplied radiators worldwide for more than 50 years and has produced over 30 million units across its product range.
| Year | Make | Model | Liters | Cylinders | Fuel Type | Notes |
|---|---|---|---|---|---|---|
| 2026 | Toyota | Tundra | 3.4L | V6 | FULL HYBRID EV-GAS (FHEV) | Upgraded with Higher Performance & Stronger B-Tube Design |
| 2025 | Toyota | Sequoia | 3.4L | V6 | FULL HYBRID EV-GAS (FHEV) | Upgraded with Higher Performance & Stronger B-Tube Design |
| 2025 | Toyota | Tundra | 3.4L | V6 | FULL HYBRID EV-GAS (FHEV) | Upgraded with Higher Performance & Stronger B-Tube Design |
| 2024 | Toyota | Sequoia | 3.4L | V6 | FULL HYBRID EV-GAS (FHEV) | Upgraded with Higher Performance & Stronger B-Tube Design |
| 2024 | Toyota | Tundra | 3.4L | V6 | FULL HYBRID EV-GAS (FHEV) | Upgraded with Higher Performance & Stronger B-Tube Design |
| 2023 | Toyota | Sequoia | 3.4L | V6 | FULL HYBRID EV-GAS (FHEV) | Upgraded with Higher Performance & Stronger B-Tube Design |
| 2023 | Toyota | Tundra | 3.4L | V6 | FULL HYBRID EV-GAS (FHEV) | Upgraded with Higher Performance & Stronger B-Tube Design |
| 2022 | Toyota | Tundra | 3.4L | V6 | FULL HYBRID EV-GAS (FHEV) | Upgraded with Higher Performance & Stronger B-Tube Design |
| No rows match your filter. | ||||||