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2005 GMC ENVOY Cooling & Heating

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ACDelco Mechanical Water Pumps

ACDelco mechanical pumps are ideal replacement components for many vehicles on the road today. They're manufactured to meet and exceed OE specifications for fit and performance. The pumps are available in many styles, materials, and other options. Order the model recommended for your application. Features and benefits include: * Available for practically all GM vehicles as well as a wide range of non-GM vehicles * Completely pressure-tested for reliable, leak-free performance * Coated seals support seal longevity and durability * Heat-treated shaft assemblies and impellers provide superior strength and durability * High-quality bearings are permanently sealed and lubricated for greater durability and long life * Uniform wall sections and smooth coolant-flow cavities for efficient operation * Cast iron, aluminum, or steel design, depending on vehicle

4.71 out of 5 stars ( 452 )

$47.99

$160.99

Mishimoto Performance Radiators

Mishimoto performance radiators are designed and engineered to maximize cooling efficiency, boost engine functions, and, most of all, protect your engine from overheating. Many stock radiators can't handle the additional heat that comes higher horsepower levels. So, swap out your stock radiator for an all-aluminum Mishimoto. Key features and benefits of Mishimoto performance radiators include: * Available for universal and exact fit applications (no cutting or modifications required) * All-aluminum construction for optimal heat dissipation, improved strength, and reliability * Increased cooling capacity due to their massive core size * 100 percent brazed aluminum core for minimal distortion, low stress, and clean joints * Available in various sizes with 2-row or 3-row cores * TIG-welded for clean, strong welds and increased durability * Magnetic drain plugs capture metallic debris or fragments * Included high-pressure 1.3 bar cap raises the coolant boiling point for greater safety and efficiency * Automatic transmission and accessory coolers included where applicable

4.41 out of 5 stars ( 318 )

$655.99

On Sale

Mr. Gasket Water Necks

Mr. Gasket offers replacement water necks in a variety of styles, materials, finishes, sizes, and angles. Water necks help to hold the vehicle's thermostat in place as it opens and closes—to regulate the flow of coolant through your engine. The opening in the water neck created by the thermostat allows coolant to flow from the radiator back to the engine. Order the model recommended for your vehicle.

3.74 out of 5 stars ( 117 )

$49.95


$27.09

$63.05

On Sale

Mr. Gasket LS Thermostats

Mr. Gasket offers these high-quality thermostats for GM LS series automobile and light truck engines that utilize a separate thermostat and water neck. They're available in 160 and 180 degree temperatures to suit your engine application.

4.12 out of 5 stars ( 25 )

$36.74


$33.07

FlowKooler Hi-Flow Mechanical Water Pumps

FlowKooler Hi-Flow mechanical water pumps resolve low-speed heating problems by doubling flow rates at low rpm and idle. CNC precision-machined impellers feature larger diameters, increased vane count, tighter clearances, shrouding, and porting. These unique design features help drop engine temperatures by up to 30 degrees, increase the block pressure to prevent hot spots on cylinder walls, and stop the formation of steam pockets in the block, all while delaying the onset of cavitation at higher rpm. FlowKooler Hi-Flow mechanical water pump impellers are protected from electrolysis and corrosion with a military-grade Type II Class II anodized surface coating.

4.47 out of 5 stars ( 755 )

$248.99

Four Seasons Fan Mount Pull Tie Kits

Four Seasons fan mount pull tie kits allow for the easy installation of your fan. These black nylon ties secure your fan and include holders and pads to protect your radiator. Mount your fan right with Four Seasons fan mount pull tie kits.

4.73 out of 5 stars ( 52 )

$2.99

Maradyne Jetstreme Electric Fans

Maradyne Jetstreme electric fans feature a low-profile design to allow for turbo or supercharger installations. They use a sealed motor tested in accordance with DIN EN 60529 and are dust and waterproof to IP68. The fans utilize an S-blade design for quieter operation and have a rubber seal that eliminates vibration contact and increases airflow. Maradyne Jetstreme electric fans have all glass-filled nylon construction for maximum durability.

4.89 out of 5 stars ( 18 )

$357.80

$468.88

Summit Racing™ Thermostats

Summit Racing offers replacement thermostats for thousands of vehicles. They're offered in a variety of styles, materials, flow rates, temperature ratings, and more. A reliable thermostat is essential to your cooling system and overall performance—kicking in precisely when your engine needs it. Order the model best suited for your application.

4.28 out of 5 stars ( 361 )

$49.99

GMB OE Replacement Water Pumps

GMB OE replacement water pumps are precision-built and balanced to meet or exceed original equipment specifications. They're assembled with heavy-duty steel bearings—and are lubricated and sealed for life. Order the model designed for your vehicle application. All GMB water pumps are factory-tested for quality and include the following features: * High-flow design for long-lasting, efficient cooling * Designed for OE fit and performance * Precision-ground shaft and hub accept OE fan clutches perfectly * OE-quality forged housing is specially formed to ensure maximum coolant flow * Pressed-on impeller increases water flow * Unique no-sealant-required gasket makes installation fast and easy * Unitized seal protects bearings for long life and leak-free performance * Factory-sealed, precision-ground, one-piece bearing assembly

4.35 out of 5 stars ( 531 )

$40.99

$101.99

Lingenfelter Performance Engineering Thermostats

Lingenfelter Performance Engineering offers premium-quality thermostats for several applications. They're all direct drop-ins with no modifications needed and each includes the rubber seal. Reduce coolant temperature, produce more horsepower, and improve performance with Lingenfelter Performance Engineering thermostats.

3.93 out of 5 stars ( 142 )

$28.45

MotoRad Thermostats with Seal

MotoRad offers thermostats with gasket seal for a wide range of car and truck applications from the 1990s and up. They feature high-grade stainless steel and copper construction, and are 100 percent tested and calibrated for consistent, precise response to your cooling system needs. The thermostats provide an OE design for worry-free direct-fit replacement; they meet or exceed factory standards. Order the model (and opening temperature rating) recommended for your vehicle.

3.67 out of 5 stars ( 12 )

$19.99

PRW High Performance Mechanical Water Pumps

PRW High Performance mechanical water pumps are engineered to deliver increased water flow faster. These super velocity pumps significantly improve cooling for all street, high performance, and racing applications. The low pressure-injected, A356 aluminum alloy pump bodies are complemented by a precision, high-flow cast iron impeller design. Pressure-balanced water passages equalize flow and minimize engine hot spots at any speed. PRW High Performance mechanical water pumps are excellent alternatives for not only racers, but also trucks, towing, and motorhome applications. Order the model recommended for your specific vehicle and engine size. Features, items, and specs: * 35 gpm at 4,000 rpm with minimal cavitation and proportional increased flow rates at 5,000+ rpm * Aircraft industry tolerances * Heavy-duty 0.75 in. diameter steel shafts * Billet steel hubs and shielded-seal roller ball bearings * Back plate O-ring sealed for most applications * System Basis Chip (SBC) applications include adjustable hardware

4.06 out of 5 stars ( 31 )

$219.77

$284.27

Dorman Climate Control Modules

Dorman climate control modules feature temperature controls that match original equipment fit and function. They've been designed as factory reproductions with easy plug-and-play installation—no programming required. These economical panels are available for various locations, such as in-dash, front, and rear auxiliary. Order the climate control module designed for your specific vehicle application.

4.37 out of 5 stars ( 27 )

$196.99

$217.99

Derale Stacked Plate Engine Oil Coolers

Designed for high performance racing or driving applications, these Derale Performance stacked plate engine oil coolers offer maximum heat extraction. They are designed to keep the oil in the correct temperature range and extend the life of the engine.

Not Yet Reviewed

$245.41

Summit Bucks

ACDelco GM Genuine Parts Engine Coolant Thermostats

ACDelco GM Genuine Parts engine coolant thermostats monitor the flow of coolant through your vehicle's engine and radiator. Built to the exact specification of your original component, these are the only GM-recommended replacements. Do not settle for anything less than the best; choose ACDelco GM Genuine Parts.

4.46 out of 5 stars ( 37 )

$24.99

Hayden Electric Fans

As a primary cooling source, Hayden Automotive electric fans slightly increase horsepower and fuel economy when replacing fan clutches and fan assemblies. These thin fans are manufactured with reversible blades for pusher and puller operation. Hayden uses high-quality, long-life electric motors to ensure performance and durability. They come available in 10, 12, 14, and 16 in. diameters.

4.58 out of 5 stars ( 12 )

$72.99

$75.99

Hayden Fluid Coolers

Hayden Automotive offers fluid coolers in a variety of sizes and materials. These units help to extend the life of your vehicle by lowering operating temperatures. Coolers are available for many types of fluids, including transmission, hydraulic, and power steering; as well as engine coolant, diesel fluid, and engine and differential oil. Order the universal or vehicle-specific model needed for your application.

4.43 out of 5 stars ( 170 )

$28.99

$150.99

On Sale

Earl's Performance Adjustable Coolant Crossover Tubes

Earl's Performance adjustable coolant crossover tubes simplify the plumbing of a remote mounted electric water pump by eliminating Ts, Ys, and extra hose ends. The design of these special crossover tubes allows for adjustable length—and for use as a coolant inlet or outlet on your engine. They're constructed from billet aluminum with a black anodized finish.

5.0 out of 5 stars ( 1 )

$318.95


$175.95

Hayden Super Duty Electric Fans

Hayden Automotive is proud to introduce a new performance series of electric fans to their current offering—Super Duty electric fans. These high-quality electric fans are perfect for performance enthusiasts and off-roaders who want upgraded cooling performance. With four fan sizes available in your choice of either a pusher or puller design, there's a Hayden Super Duty electric fan that'll fit your performance cooling needs. Super Duty electric fan features: * Premium quality Italian design and manufactured construction * Available in both pusher or puller designs, in a choice of 9 in., 12 in., 14 in. and 16 in. diameters (please specify model when placing your order) * Compatible with all Hayden fan controllers * IP68 waterproof and dust proof rating * Straight blade design for maximum airflow performance * Includes mounting hardware for ease of installation

Not Yet Reviewed

$99.99

$118.99

Maradyne Pacesetter Medium-Profile Electric Fans

Maradyne Pacesetter medium-profile electric fans deliver economic efficiency for most any vehicle. Whether your vehicle is high performance or a daily driver, these S-blade designed fans will meet your needs. They are reversible, quiet, and feature glass-filled nylon construction with non-vented, medium-duty motors. They are available in a choice of diameters and each includes 90 degree mounting feet and a pigtail connector. Maradyne Pacesetter medium-profile electric fans offer a perfect fit for many projects and wallets.

5.0 out of 5 stars ( 2 )

$84.03

ICT Billet Water Pump Spacer Kits

ICT Billet water pump spacer kits are available in several thicknesses for LS Series engines. They can be used to install truck-style accessories (power steering, alternator, A/C compressor, etc.) while using factory LS3 or LS1 water pumps. Made from aerospace-grade billet aluminum, they feature a natural aluminum finish and include bolts, a steam port plug in one of the spacers, and reusable O-ring seals.

4.73 out of 5 stars ( 15 )

$115.99

Derale Stacked Plate Fluid Coolers

Derale stacked plate fluid coolers have more surface area than tube and fin coolers, giving you more efficient heat extraction. The units feature embossed turbulator plates and durable, brazed aluminum construction. They are equipped with AN male ports and are also available with an OEM-spec, high-temperature oil hose with swedged hose ends. Derale Performance coolers have pre-drilled mounting brackets and include hardware where noted.

4.65 out of 5 stars ( 112 )

$168.55

Four Seasons Power Steering Oil Cooler Installation Kits

Power steering oil coolers remove destructive heat generated within the power steering systems of your high performance vehicles. And that's where Four Seasons power steering oil cooler installation kits come into play. These kits are designed to prolong the life of your system's pump, hoses, and seals, and include an oil hose and all necessary hardware for the installation.

4.85 out of 5 stars ( 13 )

$30.99

Mr. Gasket Water Pump Bolt Sets for GM LS Engine

Upgrade your GM LS engine with a set of Mr. Gasket water pump bolt sets. The stainless steel fasteners look great and come with small diameter stainless AN washers, ideal for replacing missing or worn OEM fasteners. They feature a hex head head and include the thermostat bolts and washers.

4.75 out of 5 stars ( 4 )

$34.70

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