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One Stop Solutions 2557 Radiator
Reliable Radiator Replacement for Audi A4, S4, RS4 Models
The One Stop Solutions radiator part number 2557 is engineered to provide dependable cooling performance for Audi A4, A4 Quattro, RS4, and S4 vehicles. Designed as a direct replacement, this radiator ensures proper fitment and efficient heat dissipation to maintain optimal engine temperatures.
- Hassle free installation with drop-in fit, form, and function
- OE performance with engineering enhancements for improved cooling
- Premium grade core and tank materials for durability
- Crossflow design with 1 core row for effective heat exchange
- Tested multiple times during production for quality assurance
Technical Specifications and Features
This radiator features a core height of 24 13/16 inches, core width of 16 1/16 inches, and a core thickness of 1 inch, providing a robust cooling surface area. The core is constructed from PA material, while the tanks are made of durable plastic. Both inlet and outlet header lengths measure 16 11/16 inches with widths of 1 13/16 inches, supporting a 1 1/4 inch diameter for both inlet and outlet connections. The crossflow design enhances coolant flow efficiency, contributing to consistent engine temperature regulation.
Application and Common Issues Addressed
- Overheating due to radiator core damage or clogging
- Coolant leaks from cracked or worn plastic tanks
- Reduced cooling efficiency from corrosion or internal blockages
- Failure of original radiator causing engine temperature fluctuations
- Replacement needed after collision or mechanical damage
Installation Notes and Tips
Installation of the One Stop Solutions radiator 2557 is straightforward, designed as a direct replacement for Audi A4, A4 Quattro, RS4, and S4 models. Ensure all fittings and hardware are torqued to factory specifications. The radiator does not include a cap or transmission/engine oil coolers, so verify compatibility with your vehicle’s cooling system setup before installation.
Quality Assurance and Warranty
Each radiator undergoes up to three rounds of testing during production to ensure reliability and performance. Components such as tubes, fins, headers, and tanks are manufactured to meet or exceed OEM standards. While specific warranty details are not provided, One Stop Solutions emphasizes engineering enhancements to improve cooling efficiency and product longevity.
| Brand | One Stop Solutions |
| Part Number | 2557 |
| Cap Included | NO |
| Core Height | 24 13/16 |
| Core Material | PA |
| Core Row Quantity | 1 |
| Core Thickness | 1 |
| Core Thickness | 26 |
| Core Width | 16 1/16 |
| Down Flow Or Cross Flow Type | CROSSFLOW |
| Engine Oil Cooler Included | NO |
| Engine Oil Cooler Type | NONE |
| Inlet Diameter | 1 1/4 |
| Inlet Header Length | 16 11/16 |
| Inlet Header Width | 1 13/16 |
| Outlet Diameter | 1 1/4 |
| Outlet Header Length | 16 11/16 |
| Outlet Header Width | 1 13/16 |
| Tank Material | PLASTIC |
| Transmission Oil Cooler Included | NO |
| Transmission Oil Cooler Type | NONE |
This part fits 19 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2009 | Audi | S4 | 4.2L | V8 | N/A | |
| 2008 | Audi | A4 | 1.8L | L4 | N/A | wo/EOC |
| 2008 | Audi | RS4 | 4.2L | V8 | N/A | |
| 2008 | Audi | S4 | 4.2L | V8 | N/A | |
| 2007 | Audi | A4 | 1.8L | L4 | N/A | wo/EOC |
| 2007 | Audi | RS4 | 4.2L | V8 | N/A | |
| 2007 | Audi | S4 | 4.2L | V8 | N/A | |
| 2006 | Audi | A4 | 1.8L | L4 | N/A | wo/EOC |
| 2006 | Audi | S4 | 4.2L | V8 | N/A | |
| 2005 | Audi | A4 | 1.8L | L4 | N/A | wo/EOC |
| 2005 | Audi | A4 Quattro | 1.8L | L4 | N/A | wo/EOC |
| 2005 | Audi | S4 | 4.2L | V8 | N/A | |
| 2004 | Audi | A4 | 1.8L | L4 | N/A | wo/EOC |
| 2004 | Audi | A4 Quattro | 1.8L | L4 | N/A | wo/EOC |
| 2004 | Audi | S4 | 4.2L | V8 | N/A | |
| 2003 | Audi | A4 | 1.8L | L4 | N/A | wo/EOC |
| 2003 | Audi | A4 Quattro | 1.8L | L4 | N/A | wo/EOC |
| 2002 | Audi | A4 | 1.8L | L4 | N/A | |
| 2002 | Audi | A4 Quattro | 1.8L | L4 | N/A |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.