Part #: 3703

CSF 3703 Radiator

1 Row Plastic Tank Aluminum Core
⚙️ 13 vehicles fit this part
🔍
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$100.67Free 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
📦1 Row Plastic Tank Aluminum Core
🚗Fitment: Toyota, RAV4
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Overview of CSF 1 Row Plastic Tank Aluminum Core Radiator

The CSF 1 Row Plastic Tank Aluminum Core Radiator (Part Number 3703) is designed specifically for Toyota RAV4 models. This radiator features a durable aluminum core combined with OE-style plastic tanks, providing reliable cooling performance for your vehicle.

  • Core Thickness: 7/8 inch
  • Core Width: 15 7/8 inches
  • Core Length: 26 3/8 inches
  • Aluminum core with plastic tanks
  • Cross flow design for efficient heat dissipation
  • Inlet and outlet diameter: 1 1/2 inches (left inlet, right outlet)
  • Single core row configuration
  • Cap not included

Detailed Product Description

This radiator from CSF’s 1 Row Plastic Tank Aluminum Core line combines a lightweight aluminum core with plastic tanks that match original equipment manufacturer (OEM) specifications. The cross flow design enhances coolant flow across the core, improving heat exchange efficiency. With a core thickness of 7/8 inch and a single core row, this radiator balances cooling capacity with compact size, making it suitable for the Toyota RAV4’s engine bay. The inlet and outlet diameters are both 1 1/2 inches, positioned on the left and right sides respectively, ensuring compatibility with factory hose connections.

Applications and Common Issues Addressed

  • Replacement for leaking or cracked radiators in Toyota RAV4 vehicles
  • Resolves overheating caused by clogged or damaged radiator cores
  • Restores proper coolant flow with OEM-style plastic tanks and aluminum core
  • Addresses coolant leaks from worn or damaged inlet/outlet connections
  • Improves engine cooling efficiency in older or high-mileage RAV4 models

Installation Notes and Tips

  • Ensure compatibility with Toyota RAV4 model year before installation
  • Inspect and replace radiator hoses if worn or damaged during installation
  • Use proper coolant type recommended by Toyota for optimal performance
  • Verify inlet and outlet hose connections match the 1 1/2 inch diameter specifications
  • Bleed the cooling system after installation to remove air pockets

Quality Assurance and Warranty

The CSF 1 Row Plastic Tank Aluminum Core Radiator (Part Number 3703) is manufactured to meet OEM standards, ensuring reliable fit and function for Toyota RAV4 vehicles. The radiator is constructed with corrosion-resistant aluminum and durable plastic tanks to provide long service life. While a cap is not included, the radiator core and tanks are designed for direct replacement. Warranty details should be confirmed with the distributor or manufacturer.

BrandCSF
Part Number3703
Position1 Row Plastic Tank Aluminum Core
Box Height (in)4 7/8
Box Length (in)32 7/16
Box Weight (lbs)9
Box Width (in)19 3/16
Cap IncludedNo
Core Length26 3/8
Core MaterialAluminum
Core Thickness7/8
Core Width15 7/8
Down Flow Or Cross Flow TypeCross Flow
Hazardous MaterialNo
Inlet Diameter1 1/2 Left
Inlet Length (in)16 9/16
Inlet Width (in)1 3/8
Outlet Diameter1 1/2 Right
Outlet Length (in)16 9/16
Outlet Width (in)1 3/8
Radiator Core Row Quantity1
Tank MaterialPlastic
Tech NoteO.E.M. style Plastic tanks & Aluminum core.

This part fits 13 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2018ToyotaRAV42.5LL4N/AJapan Built; 1 Row Plastic Tank Aluminum Core
2017ToyotaRAV42.5LL4N/AJapan Built; 1 Row Plastic Tank Aluminum Core
2016ToyotaRAV42.5LL4N/AJapan Built; 1 Row Plastic Tank Aluminum Core
2015ToyotaRAV42.5LL4N/Aw/o Towing Pkg; 1 Row Plastic Tank Aluminum Core
2014ToyotaRAV42.5LL4N/Aw/o Towing Pkg; 1 Row Plastic Tank Aluminum Core
2013ToyotaRAV42.5LL4N/Aw/o Towing Pkg; 1 Row Plastic Tank Aluminum Core
2012ToyotaRAV42.5LL4N/A1 Row Plastic Tank Aluminum Core
2011ToyotaRAV42.5LL4N/A1 Row Plastic Tank Aluminum Core
2010ToyotaRAV42.5LL4N/A1 Row Plastic Tank Aluminum Core
2009ToyotaRAV42.5LL4N/A1 Row Plastic Tank Aluminum Core
2008ToyotaRAV42.4LL4N/A1 Row Plastic Tank Aluminum Core
2007ToyotaRAV42.4LL4N/A1 Row Plastic Tank Aluminum Core
2006ToyotaRAV42.4LL4N/A1 Row Plastic Tank Aluminum Core

* 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:

1338316400 - 2857016400-0V030221-311628918012891CU2891CU2892CU2893TO3010304TO3010341

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