Thermo King Oil Lubrication Adapter Assembly 558391
Official OEM Thermo King parts catalog entry for the Thermo King Adapter Assembly 558391, verified by PEAK Thermo King and West Texas Thermo King Texas, Utah, Wyoming, Washington, Oregon, serving all of the USA.
Built for Performance: The Thermo King Adapter Assembly 558391 supports reliable oil circulation within Thermo King refrigeration systems and ensures secure, leak-resistant connections in temperature-critical transport refrigeration applications. Designed for fleets that demand uptime and precision, this adapter assembly integrates with OEM lubrication pathways to preserve consistent temperature control in reefer trailer and refrigerated truck service.
Trusted Component: West Texas Thermo King lists this Adapter Assembly 558391 as an OEM-quality part for Thermo King refrigeration units. The assembly functions as an oil lubrication adapter and plug that supports proper oil return and flow, protecting compressors and cooling subsystems across demanding operations in Amarillo, Lubbock, Odessa, West Texas, and the Permian Basin.
Key Features & Customer Benefits
- OEM Compatibility – Matches Thermo King lubrication system interfaces to maintain secure, OEM-standard connections.
- Leak-Resistant Sealing – Ensures proper oil return and prevents oil loss that can compromise temperature control and reliability.
- Fleet Uptime Focus – Supports continuous operation of transport refrigeration units for predictable duty cycles and reduced downtime.
- Service-Ready Design – Simplifies replacement during scheduled maintenance to restore system efficiency quickly.
- Regional Support – Backed by certified technicians at West Texas Thermo King for fast service and parts availability across West Texas.
Product Details
| Part Number | 558391 |
| Product Name | Thermo King Adapter Assembly 558391 |
| Description | Oil lubrication system adapter and plug assembly for Thermo King refrigeration units |
| Compatibility | BKD, KD2, MD100, MD200, MD300, MD2 (Thermo King models) |
| Manufacturer | Thermo King (OEM specification) |
Efficiency & Sustainability
The Adapter Assembly 558391 supports efficient oil circulation that preserves compressor health and thermal regulation, contributing to fuel-efficient cooling and consistent temperature control across transport refrigeration applications. Integration with Thermo King systems supports compliance with modern fleet maintenance practices and pairs with control solutions such as Smart Reefer SR-4 and Diesel Direct Electric architectures where applicable.
Installation & Maintenance Tips
Install using OEM-recommended sealing components and torque values. Inspect the adapter and surrounding lubrication lines during scheduled maintenance intervals and verify oil return flow after service. Use genuine Thermo King replacement parts to ensure proper fit and system integrity.
Real-World Applications
This adapter assembly is ideal for reefer trailers and refrigerated trucks operating in long-haul and regional transport refrigeration roles. Use in maintenance bays and field service to restore proper oil flow in Thermo King refrigeration units and protect temperature-sensitive cargo. Available for installation and service in Amarillo, Lubbock, Odessa, and throughout West Texas.
Backed by Thermo King’s engineering and supported by certified technicians at West Texas Thermo King, this component delivers lasting performance and uptime assurance for fleet operations.
For product verification or service assistance, call (806) 376-5837.
For current warranty eligibility or OEM replacement coverage, please contact us for warranty information or contact the service department for confirmation.
Frequently Asked Questions
Q: Is this adapter assembly compatible with Thermo King MD300 units?
A: Yes. The Adapter Assembly 558391 lists compatibility with MD300 and select MD-series, BKD, and KD2 units for lubrication system connections.
Q: Can this part be installed during routine preventative maintenance?
A: Yes. Installation during scheduled service restores proper oil return and helps maintain consistent temperature control and compressor protection.
Q: Does use of this adapter assembly support fuel-efficient cooling operations?
A: Yes. By preserving proper lubrication and compressor function, the assembly supports efficient cooling and dependable temperature control in transport refrigeration systems.
Q: Where can fleets in West Texas receive installation service?
A: West Texas Thermo King provides installation and certified service across Amarillo, Lubbock, Odessa, and the Permian Basin.
Related Resources
Ask about fleet-wide parts programs through West Texas Thermo King.
Produced by a certified Thermo King dealership, West Texas Thermo King | a Division of PEAK Industrial. Servicing fleets across Amarillo, Lubbock, and Odessa.
Official OEM Thermo King parts catalog entry for the Thermo King Adapter Assembly 558391, verified by PEAK Thermo King and West Texas Thermo King Texas, Utah, Wyoming, Washington, Oregon, serving all of the USA.
Built for Performance: The Thermo King Adapter Assembly 558391 supports reliable oil circulation within Thermo King refrigeration systems and ensures secure, leak-resistant connections in temperature-critical transport refrigeration applications. Designed for fleets that demand uptime and precision, this adapter assembly integrates with OEM lubrication pathways to preserve consistent temperature control in reefer trailer and refrigerated truck service.
Trusted Component: West Texas Thermo King lists this Adapter Assembly 558391 as an OEM-quality part for Thermo King refrigeration units. The assembly functions as an oil lubrication adapter and plug that supports proper oil return and flow, protecting compressors and cooling subsystems across demanding operations in Amarillo, Lubbock, Odessa, West Texas, and the Permian Basin.
Key Features & Customer Benefits
- OEM Compatibility – Matches Thermo King lubrication system interfaces to maintain secure, OEM-standard connections.
- Leak-Resistant Sealing – Ensures proper oil return and prevents oil loss that can compromise temperature control and reliability.
- Fleet Uptime Focus – Supports continuous operation of transport refrigeration units for predictable duty cycles and reduced downtime.
- Service-Ready Design – Simplifies replacement during scheduled maintenance to restore system efficiency quickly.
- Regional Support – Backed by certified technicians at West Texas Thermo King for fast service and parts availability across West Texas.
Product Details
| Part Number | 558391 |
| Product Name | Thermo King Adapter Assembly 558391 |
| Description | Oil lubrication system adapter and plug assembly for Thermo King refrigeration units |
| Compatibility | BKD, KD2, MD100, MD200, MD300, MD2 (Thermo King models) |
| Manufacturer | Thermo King (OEM specification) |
Efficiency & Sustainability
The Adapter Assembly 558391 supports efficient oil circulation that preserves compressor health and thermal regulation, contributing to fuel-efficient cooling and consistent temperature control across transport refrigeration applications. Integration with Thermo King systems supports compliance with modern fleet maintenance practices and pairs with control solutions such as Smart Reefer SR-4 and Diesel Direct Electric architectures where applicable.
Installation & Maintenance Tips
Install using OEM-recommended sealing components and torque values. Inspect the adapter and surrounding lubrication lines during scheduled maintenance intervals and verify oil return flow after service. Use genuine Thermo King replacement parts to ensure proper fit and system integrity.
Real-World Applications
This adapter assembly is ideal for reefer trailers and refrigerated trucks operating in long-haul and regional transport refrigeration roles. Use in maintenance bays and field service to restore proper oil flow in Thermo King refrigeration units and protect temperature-sensitive cargo. Available for installation and service in Amarillo, Lubbock, Odessa, and throughout West Texas.
Backed by Thermo King’s engineering and supported by certified technicians at West Texas Thermo King, this component delivers lasting performance and uptime assurance for fleet operations.
For product verification or service assistance, call (806) 376-5837.
For current warranty eligibility or OEM replacement coverage, please contact us for warranty information or contact the service department for confirmation.
Frequently Asked Questions
Q: Is this adapter assembly compatible with Thermo King MD300 units?
A: Yes. The Adapter Assembly 558391 lists compatibility with MD300 and select MD-series, BKD, and KD2 units for lubrication system connections.
Q: Can this part be installed during routine preventative maintenance?
A: Yes. Installation during scheduled service restores proper oil return and helps maintain consistent temperature control and compressor protection.
Q: Does use of this adapter assembly support fuel-efficient cooling operations?
A: Yes. By preserving proper lubrication and compressor function, the assembly supports efficient cooling and dependable temperature control in transport refrigeration systems.
Q: Where can fleets in West Texas receive installation service?
A: West Texas Thermo King provides installation and certified service across Amarillo, Lubbock, Odessa, and the Permian Basin.
Related Resources
Ask about fleet-wide parts programs through West Texas Thermo King.
Produced by a certified Thermo King dealership, West Texas Thermo King | a Division of PEAK Industrial. Servicing fleets across Amarillo, Lubbock, and Odessa.