Part #: 2557

One Stop Solutions 2557 Radiator

⚙️ 19 vehicles fit this part
🔍
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$105.21Free Shipping
🚚Free ShippingNo Cost to Continental U.S.
🔄Free Returns*Wrong fit? No cost
🛡️60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
🔥
✅ In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Audi, S4, A4, RS4, and A4 Quattro
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

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.

BrandOne Stop Solutions
Part Number2557
Cap IncludedNO
Core Height24 13/16
Core MaterialPA
Core Row Quantity1
Core Thickness1
Core Thickness26
Core Width16 1/16
Down Flow Or Cross Flow TypeCROSSFLOW
Engine Oil Cooler IncludedNO
Engine Oil Cooler TypeNONE
Inlet Diameter1 1/4
Inlet Header Length16 11/16
Inlet Header Width1 13/16
Outlet Diameter1 1/4
Outlet Header Length16 11/16
Outlet Header Width1 13/16
Tank MaterialPLASTIC
Transmission Oil Cooler IncludedNO
Transmission Oil Cooler TypeNONE

This part fits 19 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2009AudiS44.2LV8N/A
2008AudiA41.8LL4N/Awo/EOC
2008AudiRS44.2LV8N/A
2008AudiS44.2LV8N/A
2007AudiA41.8LL4N/Awo/EOC
2007AudiRS44.2LV8N/A
2007AudiS44.2LV8N/A
2006AudiA41.8LL4N/Awo/EOC
2006AudiS44.2LV8N/A
2005AudiA41.8LL4N/Awo/EOC
2005AudiA4 Quattro1.8LL4N/Awo/EOC
2005AudiS44.2LV8N/A
2004AudiA41.8LL4N/Awo/EOC
2004AudiA4 Quattro1.8LL4N/Awo/EOC
2004AudiS44.2LV8N/A
2003AudiA41.8LL4N/Awo/EOC
2003AudiA4 Quattro1.8LL4N/Awo/EOC
2002AudiA41.8LL4N/A
2002AudiA4 Quattro1.8LL4N/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:

5053980125568E0121251ABAU3010135CU2557

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.