Part #: 3128

CSF 3128 Radiator

1 Row Plastic Tank Aluminum Core
⚙️ 4 vehicles fit this part
🔍
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$118.03Free 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: Mitsubishi, Lancer
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Overview of CSF 3128 Radiator for Mitsubishi Lancer

The CSF 3128 radiator is designed specifically for Mitsubishi Lancer models, providing reliable engine cooling with a durable construction. Featuring a 1 row plastic tank aluminum core, this radiator balances efficient heat dissipation with corrosion resistance.

  • Core thickness: 7/8 inch
  • Core width: 27 1/16 inches
  • Core length: 14 3/4 inches
  • Aluminum core material with plastic tanks
  • Down flow design for optimized coolant circulation
  • Inlet and outlet diameter: 1 3/8 inches
  • Compatible with Mitsubishi Lancer vehicles
  • Part number: 3128

Detailed Product Features and Specifications

This CSF radiator (part number 3128) features a single-row aluminum core measuring 7/8 inch thick, 27 1/16 inches wide, and 14 3/4 inches long. The aluminum core ensures effective heat transfer while the OE-style plastic tanks provide durability and resistance to corrosion. The radiator uses a down flow design, which directs coolant from the top to the bottom, enhancing cooling efficiency in the Mitsubishi Lancer. Both the inlet and outlet have a diameter of 1 3/8 inches, with the inlet positioned at the center and the outlet on the left side, matching factory specifications for a direct replacement.

About the 1 Row Plastic Tank Aluminum Core Product Line

The CSF 1 Row Plastic Tank Aluminum Core line combines lightweight aluminum cores with OE-style plastic tanks to deliver a balance of performance and durability. This product line is engineered to meet original equipment specifications, making it suitable for vehicles like the Mitsubishi Lancer that require precise fitment and reliable cooling under normal driving conditions.

Common Applications and Problem Solving

  • Replacement for leaking or damaged radiators in Mitsubishi Lancer models
  • Resolves overheating issues caused by inefficient or clogged cores
  • Addresses coolant flow problems due to cracked or warped tanks
  • Improves engine temperature regulation for consistent performance
  • Suitable for restoring factory cooling system functionality

Installation Notes and Tips

When installing the CSF 3128 radiator, ensure the inlet and outlet hose connections match the 1 3/8 inch diameter specifications. The down flow design requires proper orientation to maintain coolant flow direction. Verify that mounting points align with the Mitsubishi Lancer chassis for a secure fit. This radiator does not include a cap, so reuse the existing cap or purchase a compatible CSF cap number 4503 if needed.

Quality Assurance and Warranty

CSF radiators are manufactured to meet OEM standards, using high-quality aluminum cores and durable plastic tanks. This radiator is free of hazardous materials and designed for long-term reliability. While specific warranty details are not provided, CSF products typically adhere to industry quality controls to ensure consistent performance in Mitsubishi Lancer vehicles.

BrandCSF
Part Number3128
Position1 Row Plastic Tank Aluminum Core
Core Thickness7/8
Core Width27 1/16
Core MaterialAluminum
Tank MaterialPlastic
Core Length14 3/4
Inlet Diameter1 3/8 centre
Outlet Diameter1 3/8 left
Down Flow Or Cross Flow TypeDown flow
Radiator Core Row Quantity1
Cap IncludedNo
Box Height (in)5 4/16
Box Length (in)29 11/16
Box Weight (lbs)10
Box Width (in)21 9/16
Csf Cap Number4503
Hazardous MaterialNo
Inlet Length (in)27 13/16
Inlet Width (in)1 5/8
Oil Cooler (in)11 13/16 (high-effeciency concentric type)
Outlet Length (in)27 13/16
Outlet Width (in)1 5/8
Tech NoteO.e.m. style plastic tanks & aluminum core.

This part fits 4 vehicles. Search below:

YearMakeModelSubmodelLitersCylindersPositionNotes
2005MitsubishiLancerRalliart2.4LL4N/AOE style design with Mini 16 psi cap.; 1 Row Plastic Tank Aluminum Core
2004MitsubishiLancerRalliart2.4LL4N/AOE style design with Mini 16 psi cap.; 1 Row Plastic Tank Aluminum Core
2004MitsubishiLancerSportback2.4LL4N/AOE style design with Mini 16 psi cap.; 1 Row Plastic Tank Aluminum Core
2004MitsubishiLancerSportback Ralliart2.4LL4N/AOE style design with Mini 16 psi cap.; 1 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:

2970CU2970MI3010203MI3010204MN 153153MN 156101MN 156102

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