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CSF 3781 OE Replacement Aluminum Crossflow Radiator

(2016-2021 Honda Civic)

Part of: CSF Radiator

Other options in this family: CSF 3662 CSF 3543 CSF 3866 CSF 3838 CSF 3544

Manufacturer

Part Number

3781
Sale Price

$88.57

In Stock (10+)

delivery box

Usually delivered within 2 days

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No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The CSF 3781 is a premium OE replacement radiator engineered to meet or exceed original equipment specifications for reliable engine cooling performance. This radiator features aluminum core and plastic tank construction with a crossflow design for optimal heat dissipation.

Construction Features:

  • OEM-specified plastic tank and aluminum core construction
  • Tanks made from virgin grade engineered plastic resins with glass-fill reinforcement for added strength and durability
  • Special grade EPDM rubber gaskets withstand extreme temperatures down to -120°F
  • Welded tubes or latest generation B-Tube design for enhanced coolant flow
  • High-performance multi-louvered fin design (OEM spec) maximizes cooling efficiency
  • Built-in transmission cooler with turbulator when applicable

Quality Assurance:

  • 100% leak tested at 150% of operating pressure before leaving factory
  • Individually tested through rigorous procedures including vibration-cycle, thermal-cycle, and burst pressure testing
  • Wind tunnel tested for optimal radiator core cooling efficiency
  • Salt spray tested for corrosion protection
  • Industry-leading packaging meets 10-foot drop test standard
  • Drop-in fit design requires no modifications for installation

Manufactured in ISO/TSO certified facilities, CSF radiators are precision-engineered to provide dependable cooling system performance and a direct OE fitment. With over 30 million cooling products sold worldwide in over 50 years, CSF has earned the reputation as "The Cooling Experts" in automotive thermal management.

Products specifications

Fits

2016-2021 Honda Civic

Inlet Length (In)

18 1/8

Outlet Length (In)

18 1/8

Box Length (In)

33

Hazardous Material

No

Inlet Width (in)

1 5/8

Outlet Width (in)

1 5/8

Box Weight (lbs)

11

Box Width (in)

21 3/8

Tech Note

O.E.M. Style Radiator

Box Height (in)

5 11/16

It was fast and smooth. Thank you Susan

Online shopping and ordering with Autoplicity.com was direct and easy. Delivery times were quick and prices were lower than many other sources. Overall, great experience.

Happy

I hope you're right about compatibility!!!!

good

Quick and easy

easy

The lowest price I could find online, as well as having a very fast shipping speed

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