2003 Chevy Trailblazer Performance Engine Cooling

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    • (0 reviews)
      # 86889707
      Chevy Trailblazer EXT 5.3L 2003, Direct Fit Radiator and Electric Fan by Flex-a-Lite®. The all-aluminum radiator core is fully hand welded to the Flex-a-fit patented sidetank technology. The 'T' channels offer greater heat...
      Makes for efficient heat transferPatented Flex-a-fit sidetank design
      $1,279.95
    • (0 reviews)
      # 86889706
      Chevy Trailblazer EXT 5.3L 2003, Direct Fit Radiator by Flex-a-Lite®. The all-aluminum radiator core is fully hand welded to the Flex-a-fit patented sidetank technology. The 'T' channels offer greater heat dissipation and provide...
      Makes for efficient heat transferPatented Flex-a-fit sidetank design
      $689.95
    • (0 reviews)
      # 86904720
      Chevy Trailblazer 2003, Direct Fit Dual Electric Fan by Flex-a-Lite®. Replace your old belt-driven fan with this highly efficient device and get all possible advantages it is sure to provide! A few extra horses, additional torque,...
      Maximizes horsepower and torqueOptimizes gas mileage
      $519.95 - $619.95
    • (0 reviews)
      # 91093693
      Chevy Trailblazer EXT 5.3L 2003, Jetstreme II™ Low Profile Primary Electric Fan by Maradyne®. Diameter: 16". Watt Motor: 160W. Type: 2600cfm. Current Drow: 24.8 Amp. With S-Blade. Reversible rotation. 26" Width x 15" Height....
      Low profile allows for turbo applicationsReversible design for pusher or puller applications
      $288.34 - $349.99
    • (0 reviews)
      # 86889636
      Chevy Trailblazer LS / LT / LTZ / North Face 2003, Trimline Direct Fit Reversible Electric Fan by Flex-a-Lite®. 16". 2215 CFM. The Trimline electric fans can be used as a primary fan or an auxiliary fan. They are economical fans...
      2000 RPM2215 CFM of airflow
      $107.11
    • (1 review)
      # 23619349
      Chevy Trailblazer 2003, Rapid-Cool™ Reversible Fan Kit by Hayden®. This product can be used for either primary or add-on cooling. The Hayden Rapid-Cool fan features a thin, aerodynamic profile and reversible push/pull blades. The...
      Reversible push/pull operationThin, aerodynamic profile for applications with limited space
      $61.30 - $66.72
    • (0 reviews)
      # 144991349
      Chevy Trailblazer EXT 5.3L 2003, Aluminum Hi-Performance Water Pump by PRW®. Designed utilizing the latest technology, this product by PRW Industries features premium quality and will perform better than advertised. Perfect for...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $242.55 - $341.55
    • (0 reviews)
      # 92677718
      Chevy Trailblazer EXT 5.3L 2003, Aluminum Hi-Performance Water Pump Kit by PRW®. Designed utilizing the latest technology, this product by PRW Industries features premium quality and will perform better than advertised. Perfect for...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $359.55 - $440.55
    • (0 reviews)
      # 84279815
      Chevy Trailblazer EXT V8 2003, Straight-Up Coolant Thermostat Housing by Proform®. Type: Straight. With Hardware. Finish: Chrome Plated. Material: High-Quality Aluminum. O-Ring Style. Sold Each. If you are looking to enhance your...
      Carefully designed to improve the performance of your vehicleCrafted from first-rate materials
      $15.32
    • (0 reviews)
      # 56762232
      Chevy Trailblazer V8 2003, Aluminum 1" Thick Water Neck Spacer by Brodix®.
      $46.68
    • (0 reviews)
      # 102202841
      Chevy Trailblazer / Trailblazer EXT 2003, Thermocap™ Radiator Cap by Mr. Gasket®. OEM Replacement. With Thermometer Built In. 16 PSI. Keeping your engine cool is pretty important, so Mr. Gasket has a full line of cooling system...
      Brilliant triple-chrome platingPrevent boilovers
      $30.57 - $35.38
    • (0 reviews)
      # 95441966
      Chevy Trailblazer EXT 5.3L Chevrolet Engine with Small Block 2003, Water Pump Bolt Kit by ARP®. Finish: Black. Material: 8740 Chrome Moly. Quantity: Kit. Package Type: Skin. We have an assortment of premium quality stainless steel...
      Designed to unlock more performance out of your vehicleDeliver a reasonable balance of strength and durability
      $32.64 - $33.35
    • (0 reviews)
      # 84997951
      Chevy Trailblazer EXT V8 2003, Water Outlet Restrictor Kit by Moroso®. With this quality part backed by a great price, you can enjoy your vehicle so much more than you thought was possible. This Moroso part is specifically...
      Restricting coolant flow leaving the engine lets you control the amount of heat absorbed by the coolantRed, gold, and blue anodized aluminum restrictor plates are mounted under the water outlet on the intake manifold
      $9.32
    • (0 reviews)
      # 95441910
      Chevy Trailblazer EXT 5.3L Chevrolet Engine with Small Block 2003, Thermostat Housing Bolt Kit by ARP®. UHL: 20mm. Thread Size: M8. Quantity: Kit. Package Type: Skin. Nobody likes water leaks. And here’s ARP’s contribution to...
      Designed to unlock more performance out of your vehicleDeliver a reasonable balance of strength and durability
      $8.84 - $10.82
    • (0 reviews)
      # 95441935
      Chevy Trailblazer EXT 5.3L Chevrolet Engine with Small Block 2003, Water Pump and Thermostat Housing Bolt Kit by ARP®. Finish: Polished. Material: Stainless Steel. Quantity: Kit. Package Type: Skin. We have an assortment of premium...
      Designed to unlock more performance out of your vehicleDeliver a reasonable balance of strength and durability
      $43.64 - $47.69
    • (0 reviews)
      # 129193526
      Universal Direct Fit Standard Profile Crossflow Radiator by Flex-a-Lite®. The all-aluminum radiator core is fully hand welded to the Flex-a-fit patented sidetank technology. The 'T' channels offer greater heat dissipation and...
      Makes for efficient heat transferPatented Flex-a-fit sidetank design
      $899.95
    • (0 reviews)
      # 129193569
      Universal Standard Profile Crossflow Radiator by Flex-a-Lite®. The all-aluminum radiator core is fully hand welded to the Flex-a-fit patented sidetank technology. The 'T' channels offer greater heat dissipation and provide an...
      Makes for efficient heat transferPatented Flex-a-fit sidetank design
      $599.95 - $779.95
    • (0 reviews)
      # 129193571
      Universal Standard Profile Downflow Radiator by Flex-a-Lite®. The all-aluminum radiator core is fully hand welded to the Flex-a-fit patented sidetank technology. The 'T' channels offer greater heat dissipation and provide an...
      Makes for efficient heat transferPatented Flex-a-fit sidetank design
      $639.95 - $919.95
    • (0 reviews)
      # 129193563
      Universal Slim Profile Crossflow Radiator by Flex-a-Lite®. The all-aluminum radiator core is fully hand welded to the Flex-a-fit patented sidetank technology. The 'T' channels offer greater heat dissipation and provide an extremely...
      Makes for efficient heat transferPatented Flex-a-fit sidetank design
      $529.95 - $949.95
    • (0 reviews)
      # 104586008
      Universal Custom Radiator Kit by Northern Radiator®. Kit Is Sold As An Unfinished Product. Standard Northern Warranties Do Not Apply.
      $218.08 - $369.22
    • (0 reviews)
      # mpn1939883139
      Universal Sprint Car Radiator, 20-1/2" x 16-1/4" x 2-1/4" by Northern Radiator®. All Aluminum Sprint Car Radiator. Machined Billet Aluminum Filler Neck. Dual Pass Radiator For 305, 360 & 410 Class Engines. 1 Row Of True 42Mm (1...
      $264.42
    • (0 reviews)
      # 95630333
      Circle Track Single Pass Radiator by Be Cool®. The Hard Core Circle Track radiator series is a short line of radiators that feature an extra durable, dual 1" core for maximum cooling and extended durability. They feature wide...
      High quality at an affordable priceBuilt to match your exact requirements
      $279.99
    • (0 reviews)
      # 144925149
      Chevy Trailblazer 2003, Aluminum Racing Radiator by Big End Performance®. Aluminum Racing Radiator are 100% Aluminum furnace-brazed welded construction. No gaskets, seals or epoxy to leak.
      High quality at an affordable priceExpertly made from premium materials
      $202.49 - $281.24
    • (0 reviews)
      # 144925238
      Chevy Trailblazer 2003, Pro-Flow Racing Radiator by Big End Performance®. 100% aluminum welded construction, for the budget racer. Cross flow design with a dual 1" tube and 2-1/4" thick core. Stamped & aluminum furnace welded...
      High quality at an affordable priceExpertly made from premium materials
      $175.49
    • (0 reviews)
      # mpn1523561559
      Universal Auxiliary Electric Fan by Flex-a-Lite®. Keep your engine cool and free up some extra horsepower and torque. The fan makes quicker cool downs, extended water pump life, improved A/C performance, and increased gas mileage.
      Can be used as a primary or an auxiliary fanReversible design allows for use in pusher or puller applications
      $569.95
    • (0 reviews)
      # 129193527
      Universal Dual Electric Fan System by Flex-a-Lite®. Replace your old belt-driven fan with this highly efficient device and get all possible advantages it is sure to provide! A few extra horses, additional torque, and better gas...
      2029 CFM of airflow15 AMP draw
      $329.95 - $419.95
    • (0 reviews)
      # 129193556
      Universal Lo-Profile S-Blade Electric Fan by Flex-a-Lite®. Keep your engine cool and free up some extra horsepower and torque. The fan makes quicker cool downs, extended water pump life, improved A/C performance, and increased gas...
      12-1/8" Fan Diameter1250 CFM of airflow
      $174.95 - $329.95
    • (0 reviews)
      # mpn1711343
      Universal Black Magic Electric Fan by Flex-a-Lite®. 15". Without Control. Keep your engine cool and free up some extra horsepower and torque. The fan makes quicker cool downs, extended water pump life, improved A/C performance, and...
      3000 CFM of airflow19.5 AMP draw
      $264.95
    • (0 reviews)
      # 129193524
      Universal Black Magic Electric Fan by Flex-a-Lite®. Keep your engine cool and free up some extra horsepower and torque. The fan makes quicker cool downs, extended water pump life, improved A/C performance, and increased gas mileage.
      3300 CFM of airflow18 AMP draw
      $270.83 - $349.95
    • (0 reviews)
      # mpn1721315
      Universal Electra-Fan II Electric Fan by Flex-a-Lite®. Keep your engine cool and free up some extra horsepower and torque. The fan makes quicker cool downs, extended water pump life, improved A/C performance, and increased gas...
      2000 RPM1950 CFM of airflow
      $201.68
    • (0 reviews)
      # 129193528
      Universal Electric Fan with Aluminum Shroud by Flex-a-Lite®. This one-of-a-kind device will help you with the engine that is running hot. The fan makes for smooth engine operation and improves the overall performance of your...
      Maximizes horsepower and torqueOptimizes gas mileage
      $189.95 - $259.95
    • (0 reviews)
      # mpn1711337
      Universal LoBoy Electric Fan by Flex-a-Lite®. Pusher. Keep your engine cool and free up some extra horsepower and torque. The fan makes quicker cool downs, extended water pump life, improved A/C performance, and increased gas...
      16" Fan Diameter2500 CFM of airflow
      $159.95
    • (0 reviews)
      # 129193562
      Universal Single Reversible Electric Fan by Flex-a-Lite®. The Trimline electric fans can be used as a primary fan or an auxiliary fan. They are economical fans that free up wasted horsepower and increase gas mileage when used as a...
      2220 RPM1585 CFM of airflow
      $129.95 - $179.95
    • (0 reviews)
      # 129193580
      Universal Trimline Reversible Electric Fan by Flex-a-Lite®. The Trimline electric fans can be used as a primary fan or an auxiliary fan. They are economical fans that free up wasted horsepower and increase gas mileage when used as...
      2500 RPM340 CFM of airflow
      $7.03 - $149.95
    • (0 reviews)
      # 91091532
      Universal Electric Fan by Maradyne®. This low-profile, unshrouded fan is suitable for mounting in front of your radiator or A/C condenser as a pusher fan, or inside the engine bay as a puller. Simply reverse the wire leads to...
      High-performance water- and dust-resistant sealed motorHarness not included
      $45.92 - $146.35
    • (0 reviews)
      # 66967848
      Universal Cooling Fan by BTP®. This BTP product helps your engine cooling system to ensure maximum performance of your vehicle by providing increased coolant flow preventing your four-wheel friend's engine from overheating. This...
      Engineered to prevent your vehicle's engine from overheatingMade from premium materials
      $23.94 - $42.30
    • (0 reviews)
      # 130084911
      Universal High Performance Electric Fan by Perma-Cool®. 1 Piece. Includes Mounting Brackets, Mounting Hardware. Blade made from Aluminum. Their electric fans are the most powerful electric fans available and are capable of moving...
      $164.98 - $189.98
    • (0 reviews)
      # 130084995
      Universal Standard Spiral Blade Electric Fan by Perma-Cool®. 1 Piece. Includes Mounting Brackets, Mounting Hardware. Their electric fans are the most powerful electric fans available and are capable of moving almost twice the...
      $56.98 - $84.98
    • (0 reviews)
      # 130085010
      Universal Standard Straight Blade Electric Fan by Perma-Cool®. 1 Piece. Includes Mounting Brackets, Mounting Hardware. Their electric fans are the most powerful electric fans available and are capable of moving almost twice the...
      $71.98 - $99.98
    • (0 reviews)
      # 144928798
      Universal Electric Fan by Big End Performance®. Replaces belt-driven fan or for use as an auxiliary cooling fan mounts in front or behind radiator.
      High quality at an affordable priceExpertly made from premium materials
      $49.78 - $75.07
    • (0 reviews)
      # 144915246
      Universal S-Blade Electric Fan by Big End Performance®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs...
      High quality at an affordable priceExpertly made from premium materials
      $72.83 - $100.79
    • (0 reviews)
      # 102257550
      Universal Officially Licensed GM Engine Cooling Fan by Proform®. With Nylon Tie Mounting Kit. High Performance Model. If you are looking to enhance your vehicle's performance, then this top-notch product is definitely what you...
      Officially Licensed GM ProductsCarefully designed to improve the performance of your vehicle
      $63.43 - $198.08
    • (0 reviews)
      # mpn470669219
      Universal 14'' Slim Electric Fan by Blackworks Racing®. BlackWorks Racing Slim Fans are designed to be much smaller than your factory fan while out performing it. These Slim Fans will give you a lot more clearance in your engine...
      $65.60
    • (0 reviews)
      # 109456343
      Universal Electric Fan by QuickCar Racing®. All products are engineered and tested to provide years of trouble free operation. Get this high-grade product and enjoy improved performance of your vehicle.
      $49.95 - $59.95
    • (0 reviews)
      # 129193517
      Universal 7-Blade Belt Driven Flex Fan by Flex-a-Lite®. 7-blade Flex Fans staggered blades reduce fan noise and move more air during high torque situations. The fan has been tested and proven both on and off the track to ensure...
      8000 RPMStandard rotation
      $71.97 - $76.77
    • (0 reviews)
      # 129193515
      Universal 1300 Series High Performance Belt Driven Fan by Flex-a-Lite®. The fan has been tested and proven both on and off the track to ensure that it fully meets your expectations. The part has features a rigid blade design and...
      10000 RPMStandard rotation
      $47.39 - $51.36
    • (0 reviews)
      # mpn1523561377
      Universal 1500 Series High Performance Belt Driven Fan by Flex-a-Lite®. 16". Gold Star. The fan has been tested and proven both on and off the track to ensure that it fully meets your expectations. The part has features a rigid...
      10000 RPMReverse rotation
      $62.14
    • (0 reviews)
      # 129193516
      Universal 4600 Series Aluminum Star Belt Driven Fan by Flex-a-Lite®. The fan has been tested and proven both on and off the track to ensure that it fully meets your expectations. The part has features a rigid blade design and...
      Rigid blade designReduced engine drag results
      $94.80 - $105.77
    • (0 reviews)
      # 129193520
      Universal Belt Driven Low Profile Flex Fan by Flex-a-Lite®. Low Profile Flex Fans have a less aggressive pitch blade design for tighter clearance applications. The fan has been tested and proven both on and off the track to ensure...
      8000 RPMRigid blade design
      $28.49
    • (0 reviews)
      # 129193521
      Universal Belt Driven Race Fan by Flex-a-Lite®. The fan has been tested and proven both on and off the track to ensure that it fully meets your expectations. The part has features a rigid blade design and performs almost silently...
      Rigid blade designReduced engine drag results
      $31.24 - $54.98
    • (0 reviews)
      # 130084829
      Universal Aluminum Flex Fan by Perma-Cool®. 1 Piece. Red Blades/Black Center. Turbo-Flex® Flex Fans pull additional air through the radiator at low rpms when the speed of the vehicle isn’t enough to cool the engine’s coolant...
      $34.98 - $51.98
    • (0 reviews)
      # 130084984
      Universal Stainless Steel Flex Fan by Perma-Cool®. 1 Piece. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your...
      $28.98
    • (0 reviews)
      # 130085034
      Universal Turbo Flex High Performance Flex Fan by Perma-Cool®. 1 Piece. Turbo-Flex® Flex Fans pull additional air through the radiator at low rpms when the speed of the vehicle isn’t enough to cool the engine’s coolant system....
      $41.98 - $58.98
    • (0 reviews)
      # 144929086
      Universal Flex Fan by Big End Performance®. Designed for use in limited clearance applications. Low pitch reduces drag on engine for hi performance and improved gas mileage. 8,000 RPM rating Universal bolt pattern, 5/8" pilot hole...
      High quality at an affordable priceExpertly made from premium materials
      $28.37
    • (0 reviews)
      # 144914570
      Universal Molded Nylon Fan by Big End Performance®. Lightweight nylon construction relieves stress from the water pump and bearings provides maximum cooling Ideal for race and performance when cost or weight is a concern. Universal...
      High quality at an affordable priceExpertly made from premium materials
      $19.02
    • (0 reviews)
      # 144915299
      Universal Semi-Flex Fan by Big End Performance®. Designed for use on hiperformance vehicles, or towing. Large blade allows more airflow through radiator 8,000 RPM rating. Flexible stainless steel blades with gray center hub. Fan...
      High quality at an affordable priceExpertly made from premium materials
      $38.73 - $40.28
    • (0 reviews)
      # 144915318
      Universal Serpentine Flex Fan by Big End Performance®. Reverse Rotation, serpentine belt applications. Designed for use on hi-performance vehicles, or towing 8,000 RPM rating. Flexible stainless steel blades with gray center hub....
      High quality at an affordable priceExpertly made from premium materials
      $38.73 - $40.28
    • (0 reviews)
      # mpn474702050
      Universal Electric Water Pump Remote Inline Mount by Big End Performance®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It...
      Aluminum housing, billet base,20 GPM flow rate, billet impeller
      $205.99
    • (0 reviews)
      # mpn358950173
      Chevy Trailblazer 2003, High-Flow Thermostat by Milodon®, 1 Piece. Thermostat made from Stainless Steel. 160 Degree. To assist the proper functioning of a high-performance cooling system, these Milodon thermostats are designed to...
      Flow Rating: High-flowGaskets Included: No
      $20.95
    • (0 reviews)
      # 129193568
      Universal Stainless Steel Overflow Tank Kit by Flex-a-Lite®. It is designed to be used with a Flex-a-fit radiator as well as any other radiator utilized by your vehicle. All the parts are made of top-grade aluminum and polished to...
      Direct bolt-on to your Flex-a-fit radiatorCompatible with other radiators
      $79.95




    Guides & Articles

    • Performance Engine Cooling
      Hot Under The Hood? Performance Cooling Fans Chase Away Excess Heat
      Auxiliary fans are great for providing a boost to your vehicle's original cooling system if you've encountered overheating conditions. For those who live in climates that see high temperature and humidity, excessively high coolant temperatures can be a major problem - one that will not go away if ignored. Aluminum engine blocks and cylinder heads found on most of today's cars are much more sensitive to overheating than traditional engine blocks made of iron. All it takes is one stretch of time with parts reaching excessively high temperatures to cause permanent metal warpage, leaks, and damage to a myriad of moving parts.
    • Performance Engine Cooling
      Auxiliary Oil Coolers Keep Engine Oil Temperature Under Control
      You may have seen Performance Engine Oil Coolers for sale on our website or elsewhere, and your first reaction may have been "who needs one of those? Not I." We can't say we blame you if your presumption is that either a) your engine is cooled by liquid antifreeze/coolant, so this thing can't be for you; or b) the word "performance" led you to conclude that hot-rodders are the primary target for these add-ons. In fact, if you tow a trailer, or tend to load up your SUV to the max, or drive at high speeds in very hot summer climes, you just might be the real target customer for an engine oil cooler. Allow us to provide some educational background on motor oil, and the critical roles (plural) it plays. Please read on!
    • Replacement Engine Cooling Parts
      Antifreeze Explained: What It Does And Why It's Needed
      "Antifreeze" is a chemical, primarily consisting of ethylene glycol, which when mixed with water serves to lower the freezing point and raise the boiling point of the mixture. Traditionally, the combination of antifreeze and water is known as "coolant". As opposed to air-cooled vehicles which rely on fan-driven air blowing over engine components, water-cooled engines use a radiator, water pump, thermostat, heater core, hoses, and passageways within the engine.
    • Replacement Engine Cooling Parts
      Servicing Your Vehicle's Cooling System
      Everyone knows that your vehicle's engine needs its oil and filter changed at regular intervals. Most folks also know that there are other items which need regular servicing and replacement, such as the air and fuel filters. But what about the cooling system? The fact is, a modern vehicle's cooling system does such a great job at preventing an engine from overheating that we all but ignore it. The reality is, all vehicle manufacturers have a recommended interval when the coolant should be replaced.

    Popular Products

    2003 Chevy Trailblazer Performance Engine Cooling Reviews

    Average rating:  3.5  3.5 - 1 review
    3.3 of 5
    Radiator Fan Shroud
    This product does not fit the 5.3 liter V-8 as it was suppose to. It will have to be returned.
    WPosted by William (Goreville, IL) /
    2006 Chevy Trailblazer
    Was this review helpful for you? Yes
    2003 Chevy Trailblazer Models
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