• Direct replacement
  • Built to strict quality control specifications
  • Engineered for optimum heat-transfer performance and fit
  • 100% tested prior to leaving factory
  • Proper fittings for transmission lines (if needed)


Radiators may incur bent cooling fins or small imperfections during shipping or manufacturing. A few bent fins or small dents and scratches do not affect the fit or the function of the part. Neither our 60 Day satisfaction guarantee, nor the manufacturer's warranty, cover these types of insignificant damages.

Transmission Cooler Note:

Some radiators are designed to be used on both automatic and manual transmission applications. These radiator may have fittings for an automatic transmission fluid cooler. However these radiators can be used on manual transmission models without issue and require no additional parts or modifications.

Direct Fit Replacement

Core thickness equal to the OE part.  If radiator core is slightly thinner than the OEM, this can decrease overall performance and lifespan.

Premium Aluminum Core

Engineered for top performance.  Provides efficient cooling and heat-transfer.

100% Leak Tested

Built to strict quality control standards.

Part Details

Lifetime Warranty

This item is backed by a Limited Lifetime Warranty. In the event this item should fail due to manufacturing defects during intended use, we will exchange the part free of charge (excludes shipping charges) for the original purchaser.

    Before starting this repair, make sure that your engine is cool

  1. step : Removing the Bumper Cover (0:47)
    • Pry up the four clips atop the bumper with a flat blade screwdriver
    • Remove the 10mm bolt at the front of the wheel well on both sides
    • Pull the inner fender down and away from the bumper on both sides
    • Pry down the retaining clips underneath the bumper
    • Pull each side of the bumper cover out and pull the cover forward and off
  2. step : Removing the Battery (1:33)
    • Loosen the negative battery cable with a 10mm wrench
    • Loosen the positive battery cable with a 10mm wrench
    • Pull the clip from the mounting bolt
    • Remove the mounting bolts with a 10mm wrench
    • Remove the battery mount
    • Remove the battery cover
    • Lift the battery up and out
    • Remove the lower battery retainer
  3. step : Draining the Coolant (2:22)
    • Make sure the engine is cool
    • Place a drain pan beneath the coolant drain plug
    • Twist the coolant drain plug
    • Let the coolant drain
    • Remove the radiator cap
  4. step : Removing the Coolant Overflow Bottle (3:08)
    • Remove the 10mm bolt from the coolant overflow bottle
    • Lift the reservoir up and out, unclipping the hose as you go
    • Pry off the retaining clip from the lower hose
    • Twist and pull the hose off
  5. step : Removing the Radiator Cooling Fan (3:44)
    • Place a drip pan underneath the coolant hose
    • Remove the 10mm bolt from the ground wire
    • Loosen the coolant hose clamp with pliers
    • Remove the coolant hose
    • Remove the two 10mm bolts from the radiator fan assembly
    • Disconnect the coolant temperature sensor
    • Pull the radiator fan assembly up and out
    • Disconnect the fan assembly wiring harness
    • Pull the clamp off the lower radiator hose with pliers
    • Loosen the lower radiator hose
    • Pull the clamp off the transmission coolant hoses with pliers
    • Disconnect the transmission coolant lines
  6. step : Removing the A/C Cooling Fan (7:09)
    • Disconnect the fan wiring harness
    • Remove the two 10mm bolts mounting the top of the fan in place
    • Remove the two 10mm bolts holding the condenser
    • Remove the two 10mm bolts from the A/C bracket
    • Remove the four A/C brackets
    • Squeeze the teeth on the fan's hose clip and push it through the bracket
    • Pull the cooling fan up
    • Disconnect the fan wiring harness
    • Remove the cooling fan
  7. step : Removing the Radiator (8:44)
    • Squeeze the transmission hose clip with a pair of pliers and remove it from the lower bracket
    • Pull out the loosened hoses connected to the radiator
    • Pull the radiator up
    • Pull the transmission hoses through
    • Pull the radiator up and out
  8. step : Disassembling the Radiator (9:30)
    • Loosen the hose clamps with pliers
    • Pull the hoses off the radiator
    • Dump any excess fluid out of the radiator
    • Remove the cushions on the bottom of the radiator
  9. step : Preparing the New Radiator (10:52)
    • Insert the cushions into their slots at the bottom of the engine bay
    • Insert the olds hoses to the new radiator
    • Clamp the hoses into place with pliers
  10. step : Installing the New Radiator (11:36)
    • Seat the radiator into its cushions
    • Clip the transmission hose into place
    • Insert the shorter transmission hose to the passenger side
    • Insert the longer transmission hose to the driver side
    • Clamp the hoses into place
    • Insert the lower main radiator coolant hose into place
    • Clamp the main coolant hose clamp into place
    • Insert the upper radiator coolant hose into place
    • Tighten the upper radiator hose clamp
    • Reconnect the overflow hose
  11. step : Installing the A/C Cooling Fan (13:40)
    • Insert the cooling fan into place
    • Connect the cooling fan wiring harness
    • Re-clip the fan's hose
    • Tighten the 10mm mounting nuts to the top of the fan
    • Tighten the two 10mm bolts to the A/C bracket
    • Tighten the two 10mm bolts to the condenser
  12. step : Installing the Radiator Cooling Fan (15:37)
    • Insert the cooling fan down into place
    • Connect the fan wiring harness
    • Tighten the 10mm mounting bolts to the top of the fan
    • Reconnect the coolant temperature sensor
    • Insert the coolant hose into place
    • Tighten the coolant hose clamps
    • Tighten the 10mm ground bolt
  13. step : Reinstalling the Coolant Overflow Bottle (17:43)
    • Insert the hose into place
    • Tighten the hose clamp to the hose with a pair of pliers
    • Clip the hose to the bottle
    • Insert the coolant bottle into its slot
    • Tighten the 10mm bolt to the bottle
  14. step : Reinstalling the Battery (18:45)
    • Insert the lower battery retainer
    • Insert the battery into place
    • Replace the battery cover
    • Insert the battery mount into place
    • Reinstall the 10mm bolts
    • Connect the positive battery cable with a 10mm wrench
    • Connect the negative battery cable with a 10mm wrench
    • Replace the clip to the mounting bolt
  15. step : Reinstalling the Bumper Cover (19:25)
    • Insert the bumper cover into place, the top underneath the latch lever
    • Tighten the retaining clips atop the bumper
    • Reinstall the 10mm bolt at the front of the wheel well on both sides
    • Push the inner fender into place
    • Tighten the retaining clips underneath the bumper
  16. step : Refilling the Coolant (20:23)
    • Tighten the drain plug
    • Insert a funnel into the radiator opening
    • If you are reusing coolant, filter the coolant with a t-shirt
    • Replace the radiator cap

Tools needed for replacement:

    General Tools

  • Drain Pan
  • Funnel

  • Materials, Fluids, and Supplies

  • Rust Penetrant
  • Anti-Freeze

  • Pliers, Cutters & misc Wrenches

  • Channel-Lock Pliers
  • Needle nose pliers
  • Bent Nose Pliers

  • Ratchets & Related

  • Ratchet
  • Socket Extensions

  • Screwdrivers & Related

  • Phillips Head Screwdriver
  • Flat Blade Screwdriver

  • Sockets - Metric

  • 10mm Socket

  • Wrenches - Metric

  • 10mm Wrench

4.7 / 5.0
19 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Civic Radiator arrived damaged
My radiator arrived with the box opened on one end, sealed with tape instead of the metal staples. I removed it from the box, one of the ATF connection tubes on the radiator was bent so bad it was kinked. I tried to unkink it to the best of my ability. I called 1A and they send a new radiator, this one was ok. They also sent a shipper lablel send the first radiator back. It would of been best not to have a problem but, they have corrected the situation. Overall I'm pleased with the outcome !!!
June 27, 2018
2 months ago
perfect fit
Perfect Fit and excellent price, best price I could found and very happy with the delivery time of the part... Installation video was very helpful.
April 23, 2018
4 months ago
2005 Civic Radiator
My radiator I purchased arrived in two days as promised. The replacement was identical to my original radiator. The installation video was very helpful. I am very satisfied my experience with 1A Auto.
March 18, 2018
5 months ago
Perfect fit. Perfect install video on Utube from 1aauto
January 13, 2018
7 months ago
Civic radiator
Pretty good deal. Coils spread out a little, but didn't pay $360 for EO one. But the water openings weren't capped in box?
December 29, 2017
8 months ago
2001 Honda Civic radiator replacement
Part was perfect fit. Instructional video was on the mark. Although beside the bottom bumper push pins that have to be removed, there are also 2 screws on bottom corners of bumper that needed to be removed. 1 each corner.
December 10, 2017
8 months ago
Very good price, very good parts and very good service. We are so happy. We will come back.
November 13, 2017
9 months ago
Bad aluminum Trans fluid fittings
On the radiator that I received, the aluminum fittings for the transmission fluid hoses (at bottom of the radiator) were made of very thin material. After install and test drive, trans fluid was leaking badly from the fittings. I tightened the nut slightly on one side and the fitting failed completely. The flared material inside the nut was not substantial.
November 4, 2017
9 months ago
Fit great
Took about 3 hours, but the radiator fit just like the one it took out.
October 21, 2017
10 months ago
1A Auto... great. UPS, not so much
1A Auto help and service was exemplary. The only problem I had was UPS beat up the part in transit. Nonetheless 1A Auto shipped a new part (radiator) promptly and it is working well.
September 18, 2017
11 months ago
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 1 question Browse 1 question and 3 answers
Can this fit a 2004 honda civic ex?
Lliam on Jun 13, 2016
BEST ANSWER: This should fit 01-05 civics. Mine is a 01 civic EX and this was a exact fit

Vehicle Fit

  • 2001-2005 Honda Civic Radiator L4 1.7L

This part replaces:

  • Spectra Premium Industries CU2354
  • Partslink HO3010177
  • TYC 2354
Part #: 1ARAD00756

Order must be placed by 4pm ET

How-to Video:

(21:58 min)