Radiator - 1ARAD00617

Warranty & Shipping
How-To & Tools
Product Reviews
Vehicle Fit

This replacement radiator is just what you need to get your GM mid size vehicle in working order again. This radiator feature these great qualities:

  • Has cooler for automatic transmission
  • Has cooler for engine oil (EOC)
  • 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)
  • Fits vehicles with 4.3L engine

This radiator makes a great replacement and has substantial cost savings over a dealer radiator.


Construction Note:

Due to new advances in radiator design and technology, this radiator may be constructed from materials that are different from your original. If so, the radiator will still fit and function properly but will be more efficient in cooling.


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.

Item Condition: New

Attention California Customers:

WARNING: Cancer and Reproductive Harm -

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.

  1. step : Disconnect the battery (1:45)
    • Use an 8 mm wrench to disconnect the negative battery terminal
  2. step : Remove the fan shroud (2:00)
    • Remove the seven 10 mm bolts using a socket, ratchet and extension.
    • Pull the shroud up and out.
  3. step : Install the new radiator (3:00)
    • Double check that everything connects the same way before installation.
    • Drain the radiator by placing a drain pain under the radiator drain.
    • Remove the skid plate by remove the six 15 mm bolts, remove them with a socket and ratchet.
    • Release the petcock to drain the radiator fluid.
    • Disconnect the radiator hoses and the oil cooler and transmission cooler lines.
    • Use an adjustable wrench and 19 mm socket and ratchet to do this.
  4. step : Install the new radiator (7:35)
    • Put the radiator into place
    • Connect all the lines and hoses
    • Do all this with your adjustable wrench and 19 mm socket and ratchet.
    • Fill with radiator fluid.
    • Turn the truck on and run it to check for leaks.
  5. step : Install the fan shroud and skid plate (10:30)
    • Bolt in the seven 10 mm bolts and six 15 mm bolts with your sockets, ratchet and extensions.

Tools needed for replacement:

    General Tools

  • Drain Pan

  • Pliers, Cutters & misc Wrenches

  • Needle nose pliers
  • Adjustable Wrench

  • Ratchets & Related

  • Socket Extensions
  • Ratchet

  • Screwdrivers & Related

  • Flat Blade Screwdriver

  • Sockets - Metric

  • 10mm Socket
  • 15mm Socket

  • Wrenches - Metric

  • 8mm Wrench

5.00/ 5.0
15 reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
it is what i ordered and it works
I have tried other radiators and they have always disappointed me. but your radiator was the best. It fits like a glove and it works yeah
January 22, 2017
very happy
The price was right. This shipping was quick. All the parts I needed to make the swap were there, except for the coolant obviosuly. Doesnt get much simpler.
February 12, 2017
Perfect for my S10
So far so good. Fit great, works great. No more leaks.
February 17, 2017
Radiator order
Needed a radiator. Called auto places in town. $120-$130. Also would have to order. Looked online and found one for $85 from1A Auto. Had it in three days. Excellent price and service. Had installed in hour. MY NEW AUTO PARTS STORE!!!!!!!!!
May 22, 2017
Everything is working great I will definitely be making more purchases from 1 a auto in the future
October 17, 2017
Fits perfectly
Fits perfectly, just as if it were made for my 2002 Blazer. Maybe because it was. Slid in with no problems, everything lined up. Even had new fittings. No leaks. The videos were clear and let you know even what tools your going to need, nice touch. Just wish whoever designes radiators would put the drain in the middle where you can actually get to it with big hands,and the fluid could flow into your catch bucket instead of on the frame splattering everywhere. Not the fault of 1AAUTO, just a pet pive of mine.
February 18, 2018
Perfect fit
ThIs radiator is just like the factory original. And it even came with new fittings. Very well worth the price. I have purchased from 1AAuto a few times before and will continue to do business with them. Great quality parts at very reasonable prices
April 14, 2018
Radiator for Chevrolet Blazer
Very happy with purchase of the new radiator. Well packaged and arrived in prefect condition. Fit exactly like the original OEM radiator. Will buy all my parts from now on from 1A Auto. Thank you.
May 11, 2018
it was just what I needed - exact OEM part - fast shipping - what more could you ask for
September 12, 2018
September 17, 2018
excellent product
perfect match to my leaky original, perfect fit. only difference was with the trans cooler fittings but the supplied adapters made that a non-issue.
September 27, 2018
It was a good radiator
It took several days longer than we thought to get our delivery but it was fine. Had no problems with the radiator. Took a few minutes to fiqure out the connections but everything was there.
October 3, 2018
Perfect website. Great oem parts.
I searched for 2 weeks for my radiator for my 96 Blazer. Major Auto Parts websites too much time to find and double the price. This website very easy to use direct what I was looking for thank you again and keep up the good work
October 10, 2018
Great quality
It seemed like this radiator is constructed better than the oem radiator that was in my 97 blazer... then again it had been in there for 21 years. It installed without any hickups and has been working great for a couple months now. I am extremely impressed with 1aautos products that I have purchased so far.
October 12, 2018
Works great!
My old radiator finally cracked and was leaking coolant and oil from the oil cooler. 1A auto had the best price on a new radiator and super fast shipping. I installed this radiator in my 2000 Chevy S10 4.3 liter in about an hour and so far it has been working great. All of the hoses and fittings fit perfectly with no issues. Thanks 1A auto.
December 30, 2018
Will this fit my car? Add a vehicle to make sure
Customer Q&A
Ask a question to 1A Auto customers who purchased the product
Will this radiator fit my 2003 Chevy blazer extreme?
Thomas B July 11, 2018
Yes, provided it has a 4.3L engine.
Christa R July 11, 2018
Year Make Model Description
1996-2004Chevy Blazer S10 Chevy Blazer S10 Radiator with Engine Oil Cooler
1996-2004Chevy S10 Pickup Chevy S10 Pickup Radiator with Engine Oil Cooler V6 4.3L
1998-2000GMC Envoy GMC Envoy Radiator with Engine Oil Cooler V6 4.3L
1996-2001GMC Jimmy S-15 GMC Jimmy S-15 Radiator with Engine Oil Cooler
1996-2004GMC S-15 Sonoma GMC S-15 Sonoma Radiator with Engine Oil Cooler V6 4.3L
1997-2000Isuzu Hombre Isuzu Hombre Radiator with Engine Oil Cooler V6 4.3L
1996-2001Oldsmobile Bravada Olds Bravada Radiator with Engine Oil Cooler
Part #: 1ARAD00617

Order must be placed by 4pm ET
Delivery options for:

Estimated Arrival Cost

Deliveries made to PO Boxes and FPO may take longer. See our Shipping & Delivery for more information.

Get it in: 2 - 4 Business Days

Want it sooner? Choose Next Day Air at Checkout

How-to Video:

(11:05 min)