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Get affordable Hummer H3 radiators you deserve. In just 10 minutes, you could save up to 80% with PartsGeek. Save time and dollars on your next H3 auto radiators purchase. Over 12 Years of saving people money and providing great customer service. Check our low-cost options today. The average cost for radiator replacement is between $104.98 and $314.43

Hummer H3 Radiator Reviews
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Shop Hummer H3 Replacement Radiator

The Hummer H3 is a class act with a lot of performance coming out of the engine. With so many moving parts, it's natural for it to provide a lot of heat due to the friction of them moving together. As the engine heats, it's going to signal the radiator to cool it down. If there's something wrong with your radiator, your engine is going to overheat, causing unthinkable damage. Your radiator works by sending coolant around the engine block. It's a simple process, but when it breaks, you need to get it fixed immediately.

You can shop for the H3 radiator by Hummer you need at PartsGeek.com. Finding the part you need is easy and affordable, allowing you to fix your engine problems without the help of a local mechanic and their mark-up. Find the part you need, make the repair and save your engine.

We stock these Radiator brands for the Hummer H3: Action CrashCSFTYCSpectra PremiumAC DelcoAPIDIY Solutions

Radiator for Hummer H3 - Partsgeek

Select your H3 year

Review Fitment Notes
Showing 18 of 85 Results
Action Crash Radiator - for 2006 Hummer H3 - RAD2855 Click to Enlarge
4.8 Stars
Action Crash RAD2855
Radiator
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Part Number: RAD2855
Brand: Action Crash
Notes: RADIATOR; PLASTIC AND ALUMINUM
Detailed Notes: Plastic and Aluminum Construction
Product Remark: 3.5L; Automatic or Manual Transmission; Core Dim: 18-1/2 x 23-3/4 x 1-1/2; EOC: NO; TOC: YES
Quality: Premium - High quality new replacement part.
Condition: New
Shipping Options: Ground
List Price:
$384.38
Our Price: $104.98
View Details
This Part Fits:
Catalog: D
Vehicle Notes
2006 Hummer H3 RADIATOR; PLASTIC AND ALUMINUM
Action Crash Radiator - for 2007 Hummer H3 - RAD2855 Click to Enlarge
4.8 Stars
Action Crash RAD2855
Radiator
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Part Number: RAD2855
Brand: Action Crash
Notes: RADIATOR; PLASTIC AND ALUMINUM
Detailed Notes: Plastic and Aluminum Construction
Product Remark: 3.7L; Automatic or Manual Transmission; Core Dim: 18-1/2 x 23-3/4 x 1-1/2; EOC: NO; TOC: YES
Quality: Premium - High quality new replacement part.
Condition: New
Shipping Options: Ground
List Price:
$384.38
Our Price: $104.98
View Details
This Part Fits:
Catalog: D
Vehicle Notes
2007 Hummer H3 RADIATOR; PLASTIC AND ALUMINUM
CSF Radiator - for 2006 Hummer H3 - W0133-1906104 Click to Enlarge
Website Reviews
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Part Number: W0133-1906104
Brand: CSF
Notes: Aluminum Core
Product Remark: Plastic Tank
Condition: New
Shipping Options: Ground, Overnight, 2 Day
List Price:
$384.38
Our Price: $135.58
(34) In Stock
This Part Fits:
Catalog: A
Vehicle Transmission
2006 Hummer H3 Automatic
Action Crash Radiator - for 2008 Hummer H3 - RAD2855 Click to Enlarge
4.8 Stars
Action Crash RAD2855
Radiator
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Part Number: RAD2855
Brand: Action Crash
Notes: RADIATOR; PLASTIC AND ALUMINUM
Detailed Notes: Plastic and Aluminum Construction
Product Remark: 5.3L; Automatic or Manual Transmission; Core Dim: 18-1/2 x 23-3/4 x 1-1/2; EOC: NO; TOC: YES
Quality: Premium - High quality new replacement part.
Condition: New
Shipping Options: Ground
List Price:
$384.38
Our Price: $104.98
View Details
This Part Fits:
Catalog: D
Vehicle Notes
2008 Hummer H3 RADIATOR; PLASTIC AND ALUMINUM
CSF Radiator - for 2007 Hummer H3 - W0133-1906104 Click to Enlarge
Website Reviews
Loading Reviews...
Part Number: W0133-1906104
Brand: CSF
Notes: Aluminum Core
Product Remark: Plastic Tank
Condition: New
Shipping Options: Ground, Overnight, 2 Day
List Price:
$384.38
Our Price: $135.58
(34) In Stock
This Part Fits:
Catalog: A
Vehicle Transmission
2007 Hummer H3 Automatic
TYC Radiator - for 2006 Hummer H3 3.5L 5 Cyl - 2855 Click to Enlarge
4.8 Stars
TYC 2855
Radiator
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Part Number: 2855
Brand: TYC
Notes: Radiator
Condition: New
Shipping Options: Ground
$111.43
(12) In Stock
This Part Fits:
Catalog: B
Vehicle Engine Transmission
2006 Hummer H3 3.5L 5 Cyl Automatic
CSF Radiator - for 2007 Hummer H3 3.7L 5 Cyl - 3720 Click to Enlarge
5 Stars
CSF 3720
Radiator
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Part Number: 3720
Brand: CSF
Notes: 1 Row Plastic Tank Aluminum Core -- OE Style Design
  • Radiator Cap Not Included
  • Down Flow
  • 1 Row Plastic Tank Aluminum Core
  • OEM specified Plastic Tank-Aluminum Core Construction
  • Fins High Performance Multi-Louvered Design - OEM Spec
  • 100% leak tested before leaving factory at 150% of operating pressure
  • Industry Best Packaging - 10-Foot Drop Test Standard
  • Drop-in Fit
  • High Performance Transmission Cooler with special Built-in Turburlator, when applicable
  • All components are installed, torqued, & tested on Radiator during assembly
Condition: New
Tech Note: O.E.M. style Plastic tanks & Aluminum core;with quick-connect oil cooler fittings.
Tank: Plastic
Core Material: Aluminum
No. Of Rows: 1
Shipping Options: Ground
$109.43
(41) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2007 Hummer H3 3.7L 5 Cyl
CSF Radiator - for 2008 Hummer H3 5.3L V8 - W0133-1906104 Click to Enlarge
Website Reviews
Loading Reviews...
Part Number: W0133-1906104
Brand: CSF
Notes: Aluminum Core
Product Remark: Plastic Tank
Condition: New
Shipping Options: Ground, Overnight, 2 Day
List Price:
$384.38
Our Price: $135.58
(34) In Stock
This Part Fits:
Catalog: A
Vehicle Engine
2008 Hummer H3 5.3L V8
Spectra Premium Radiator - for 2007 Hummer H3 3.7L 5 Cyl - CU2855 Click to Enlarge
5 Stars
Spectra Premium CU2855
Radiator
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Part Number: CU2855
Brand: Spectra Premium
Notes: Radiator -- Radiator Cap Is Required
Condition: New
Shipping Options: Ground
$171.43
View Details
This Part Fits:
Catalog: B
Vehicle Engine
2007 Hummer H3 3.7L 5 Cyl
Spectra Premium Radiator - for 2006 Hummer H3 3.5L 5 Cyl - CU2855 Click to Enlarge
5 Stars
Spectra Premium CU2855
Radiator
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Part Number: CU2855
Brand: Spectra Premium
Notes: Radiator -- Radiator Cap Is Required
Condition: New
Shipping Options: Ground
$171.43
View Details
This Part Fits:
Catalog: B
Vehicle Engine
2006 Hummer H3 3.5L 5 Cyl
TYC Radiator - for 2007 Hummer H3 3.7L 5 Cyl - 2855 Click to Enlarge
4.8 Stars
TYC 2855
Radiator
Loading Reviews...
Part Number: 2855
Brand: TYC
Notes: Radiator
Condition: New
Shipping Options: Ground
$111.43
(12) In Stock
This Part Fits:
Catalog: B
Vehicle Engine Transmission
2007 Hummer H3 3.7L 5 Cyl Automatic
CSF Radiator - for 2008 Hummer H3 5.3L V8 - 3720 Click to Enlarge
5 Stars
CSF 3720
Radiator
Loading Reviews...
Part Number: 3720
Brand: CSF
Notes: 1 Row Plastic Tank Aluminum Core -- OE Style Design
  • Radiator Cap Not Included
  • Down Flow
  • 1 Row Plastic Tank Aluminum Core
  • OEM specified Plastic Tank-Aluminum Core Construction
  • Fins High Performance Multi-Louvered Design - OEM Spec
  • 100% leak tested before leaving factory at 150% of operating pressure
  • Industry Best Packaging - 10-Foot Drop Test Standard
  • Drop-in Fit
  • High Performance Transmission Cooler with special Built-in Turburlator, when applicable
  • All components are installed, torqued, & tested on Radiator during assembly
Condition: New
Tech Note: O.E.M. style Plastic tanks & Aluminum core;with quick-connect oil cooler fittings.
Tank: Plastic
Core Material: Aluminum
No. Of Rows: 1
Shipping Options: Ground
$109.43
(41) In Stock
This Part Fits:
Catalog: B
Vehicle Engine
2008 Hummer H3 5.3L V8
Action Crash Radiator - for 2009 Hummer H3 - RAD2855 Click to Enlarge
4.8 Stars
Action Crash RAD2855
Radiator
Loading Reviews...
Part Number: RAD2855
Brand: Action Crash
Notes: RADIATOR; PLASTIC AND ALUMINUM
Detailed Notes: Plastic and Aluminum Construction
Product Remark: 5.3L; Automatic or Manual Transmission; Core Dim: 18-1/2 x 23-3/4 x 1-1/2; EOC: NO; TOC: YES
Quality: Premium - High quality new replacement part.
Condition: New
Shipping Options: Ground
List Price:
$384.38
Our Price: $104.98
View Details
This Part Fits:
Catalog: D
Vehicle Notes
2009 Hummer H3 RADIATOR; PLASTIC AND ALUMINUM
AC Delco Radiator - for 2006 Hummer H3 4WD - 22000 Click to Enlarge
Website Reviews
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Part Number: 22000
Brand: AC Delco
Notes: Radiator -- New
Condition: New
Shipping Options: Ground
$314.43
(2) In Stock
This Part Fits:
Catalog: B
Vehicle Sub Model Transmission
2006 Hummer H3 4WD 4L60-E Automatic 4 Spd
TYC Radiator - for 2008 Hummer H3 5.3L V8 - 2855 Click to Enlarge
4.8 Stars
TYC 2855
Radiator
Loading Reviews...
Part Number: 2855
Brand: TYC
Notes: Radiator
Condition: New
Shipping Options: Ground
$111.43
(12) In Stock
This Part Fits:
Catalog: B
Vehicle Engine Transmission
2008 Hummer H3 5.3L V8 Automatic
API Radiator - for 2010 Hummer H3 3.7L 5 Cyl - 1605-427052 Click to Enlarge
Website Reviews
Loading Reviews...
Part Number: 96070-07332533
Brand: API
Notes: Radiator
Condition: New
Shipping Options: Ground
$135.98
View Details
This Part Fits:
Catalog: P
Vehicle Engine Transmission
2010 Hummer H3 3.7L 5 Cyl Manual
DIY Solutions Radiator - for 2010 Hummer H3 3.7L 5 Cyl - HVA01731 Click to Enlarge
Website Reviews
Loading Reviews...
Part Number: HVA01731
Brand: DIY Solutions
Notes: Radiator -- L5 3.7L
  • 100% Leak Tested - Built to strict quality control standards.
  • Direct Fit Replacement
  • Premium Aluminum Core
Condition: New
Shipping Options: Free Ground Shipping
$118.95
with FREE Shipping
(20) In Stock
This Part Fits:
Catalog: Q
Vehicle Engine
2010 Hummer H3 3.7L 5 Cyl
AC Delco Radiator - for 2010 Hummer H3 4WD - 21646 Click to Enlarge
5 Stars
AC Delco 21646
Radiator
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Part Number: 21646
Brand: AC Delco
Notes: GM Original Equipment -- New
  • Lightweight; the radiators have a positive heat transfer to weight ratio
  • Corrosion-resistant aluminum designed core helps optimize the radiators long lasting
  • GM-recommended replacement part for your GM vehicle's original factory component
  • Offering the quality, reliability, and durability of GM OE
  • Manufactured to GM OE specification for fit, form, and function
Condition: New
Shipping Options: Ground
$219.98
(2) In Stock
This Part Fits:
Catalog: N
Vehicle Sub Model Transmission
2010 Hummer H3 4WD AR5 Manual 5 Spd

Related Cooling System Parts

Research on Radiator for Hummer H3

The radiator's primary function is to cool the vehicle's engine. It is the sole system that prevents the engine from overheating and sustaining serious damage. By removing the heat from the engine coolant, the radiator is in continuous operation, and can degrade or fail for many reasons. The results are, of course, very noticeable. Your vehicle will overheat. Radiators are one of those automotive parts that can be easily replaced, but at a cost, but by purchasing parts from the right place, you can save substantially.

How an Automotive Radiator Works

As liquid circulates throughout an internal combustion engine, it becomes very hot. Liquid coolant is pumped through various channels that run through the engine system, and all of it eventually passes through the radiator. As it does, heat is transferred from the fluid in the tubes to the outside air, so the liquid cools. The engine is cooled too. Intake air, air conditioner refrigerant, motor oil, and automatic transmission fluid can be cooled in this way as well. If not, Hummer H3 radiator replacement is required.

Automobile radiators consist of a network of small tubes. A honeycomb of fins help to move the heat away, in a fast and efficient manner. These fins can become bent, which will make the radiator less able to do its job. The fluid is usually circulated by a centrifugal water pump. A thermostat controls the temperature; it is able to control how much liquid flows through the radiator.

Radiator Problems

In addition to bent fins and failed thermostats, radiators can develop coolant leaks. Cracks and corrosion can be the reason. Radiators can also fill with sludge, which can cause damage. Leaking coolant can diminish the amount of fluid in the engine system, causing it to overheat. A Hummer H3 radiator leak is a good reason to visit a mechanic and most likely have it replaced.

How Long Does It Take to Change a Radiator in a Car?

Hummer H3 radiator removal doesn't take a long time. You can have a new radiator and be back on the road in two hours. Installing the part is simple for a professional because it does not have moving parts and fits into a specific location in front of the engine, and behind the grille.

Price for Replacing a Hummer H3 Radiator

The Hummer H3 radiator replacement cost is in a similar range to other automotive parts you might service. For a 2008 model, parts and labor will range from $520 to $716. You'll get luckier if just a radiator fan motor is needed, which is under $200 to replace. For both upper and lower radiator hoses, it is generally under $300. Labor charges will always factor in, since a mechanic must do this work, but you can save on parts. PartsGeek.com offers all the auto parts and accessories you'll need for less, because we sell them exclusively online. There is no overhead of running a brick and mortar operation. You get essential parts that will save you cash and keep your vehicle running like new.

Radiators available for the following Hummer H3 years: 2010, 2009, 2008, 2007, 2006, 10, 09, 08, 07, 06. This part is also sometimes called Hummer H3 Auto Radiators. We stock radiator parts for most Hummer models including H2 and H3T.

Hummer H3 Radiator Reviews
5 of 5
Verified Customer
2/15/14 09:17 AM - USA

Product came fast and worked great so far! It's been in the hummer for 2 weeks and no leaks! - Radiator

- 2006 Hummer H3 Radiator
5 of 5
Verified Customer
5/13/14 11:02 AM - USA

The prices are in line with competitors. Good quality and good prices. - Macey

- 2009 Hummer H3 Radiator
5 of 5
Verified Customer
9/23/14 01:42 PM - USA

I ordered this product and NEVER fixed anything on a car besides oil changes. This fit perfectly and is perfect quality according to the mechanics who watched me install it. - Perfect

- 2006 Hummer H3 Radiator
5 of 5
Verified Customer
6/8/15 07:21 PM - USA

Unbelievable price... less then a 1/3 of any local parts store.

Perfect fit included all the brackets. - M.V

- 2006 Hummer H3 Radiator
5 of 5
Verified Customer
10/19/15 11:08 PM - USA

Got this radiator for my H3 and it was brand new no dents and it works perfect. I wish I knew about this website before, from now on I'll be getting everything I need for my vehicles thank you guys so much I really appreciate the outstanding work.... - Awesome!!!!

- 2006 Hummer H3 Radiator
4 of 5
Verified Customer
12/20/15 10:21 AM - USA

At first was not happy the radiator came damaged, I let them know emidiately and they resolved the problem, great would use again - Irv

- 2007 Hummer H3 Radiator