1966 GMC L3500 Engine Cooling Parts
Keep Your 1966 GMC L3500 in Top Shape with Quality Engine Cooling Parts
Whether you’re repairing or upgrading your Engine Cooling Part, using high-quality parts is key to keeping your 1966 GMC L3500 looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Radiator Caps, Water Pump Gaskets, and Engine Cooling Fan Controllers. Whether you’re replacing a damaged part or enhancing your truck’s style and protection, you’ll find exactly what you need to get the job done right.
Top-Rated Engine Cooling Parts from Trusted Brands
Looking for a reliable Engine Cooling Part? We’ve got you covered with options from brands you know and trust like Imperial. For example, Imperial Engine Cooling Parts start at just $23.99 with an average 4.1 star rating. With over 554 reviews and a solid 4 star average, you can shop with confidence knowing other GMC L3500 owners approve.
Competitive Prices and Extensive Inventory
The average price for a 1966 GMC L3500 Engine Cooling Part at Advance Auto Parts is around $48.92, with a range that starts at $5.49 and goes up to $99.99. With 11 options in stock from 4 trusted brands, finding the right fit is easy. Popular picks like Thermostatic Fan Control – Preset, Engine Coolant Temperature Sensor, and Thermocap Radiator Cap start at just $35.99 and offer a great balance of form and function.
Explore Related Parts
While you’re upgrading or replacing your Engine Cooling Part, don’t forget to check out other key components like Air Conditioning Parts and Blower Motor and Related Products. At Advance Auto Parts, we’re here to help you keep your 1966 GMC L3500 in peak condition, inside and out.
Find Your Specific 1966 GMC L3500 Engine Cooling Parts
Looking for the perfect Engine Cooling Part for your 1966 GMC L3500? You’re in the right place. Below, you’ll find links to various types of Engine Cooling Parts that fit your vehicle. At Advance Auto Parts, we offer only the highest quality OEM and aftermarket Engine Cooling Parts, ensuring durability and a precise fit for your GMC L3500. Whether you’re driving a 1966 model or another popular model year like
1965 and
1967, we’ve got you covered. Purchasing Engine Cooling Parts from Advance Auto Parts is a smart choice, giving you access to trusted brands and parts built to perform. Below, you’ll find links to various types of Engine Cooling Parts that fit your vehicle.
Essential 1966 GMC L3500 Engine Cooling Parts
Mr. Gasket – Water Outlet Gasket (Part No.740C)
from
$9.99
This is a high quality gasket that will seal that leaking water neck, and provide you with years of service. This gasket works well in all applications.
Product Features:
See More
Product Features:
- Made From Cellulose/Nitrile Composition
- Provides Excellent Sealing And Durability
- These Gaskets Are Die Cut For a Precision Fit
- Fits Small Block Chevy V8 Engines 1955-’90
- Fits Big Block Chevy V8 Engines 1965-’90
- Fits Small Block Chrysler 318/360 1979-’92
- Fits Small Block Chrysler 3.9L/5.2L/5.9L Magnum 1992-’03
Mr. Gasket – Water Outlet Gasket (Part No.740)
from
$6.99
Manufactured from a blend of nitrile rubber and fiber for excellent sealing and durability. Precision die cut for application.
Product Features:
See More
Product Features:
- This gasket is bulk packaged
- Made from Cellulose/Nitrile Composition
- Provides Excellent Sealing and Durability
- These Gaskets are Die Cut for a Precision Fit
- Fits Small Block Chevy V8 Engines 1955-’90
- Fits Big Block Chevy V8 Engines 1965-’90
- Fits Small Block Chrysler 318/360 1979-’92
- Fits Small Block Chysler 3.9L/5.2L/5.9L Magnum 1992-’03
Imperial – Thermostatic Fan Control – Preset (Part No.226206)
from
$46.99
Our products are engineered and tested to provide years of trouble free operation. Backed by over 50 years of mobile a/c experience, fix it once and fix it right with Imperial.
Product Features:
See More
Product Features:
- Preset thermostatic fan control
- 185 Deg. F preset
- For use with Imperial electric fans
- Probe installs into radiator fins
- Contains gaskets, O-rings, or seals to properly replace the product
- Brass construction for accurate temperature sensing
- Zinc coated terminal to resist corrosion
- Vehicle specific applications
Imperial – Adjustable Thermostatic Fan Control (Part No.226204)
from
$65.99
Adjustable Thermostatic Fan Control. 160-210°F; push-in probe. Controls the operating temperature of Imperial electric fans. Operates up to 2 fans.
Product Features:
See More
Product Features:
- Adjustable thermostatic fan control
- 160-210°F push-in probe
- For use with Imperial electric fans
- Probe installs into radiator fins
Imperial – Adjustable Thermostatic Fan Control (Part No.226203)
from
$23.99
Our products are engineered and tested to provide years of trouble free operation. Backed by over 50 years of mobile a/c experience, fix it once and fix it right with Imperial.
Product Features:
See More
Product Features:
- Economy adjustable thermostatic fan control
- Economy Model; 32-248 Deg. F
- For use with Imperial electric fans
- Probe installs into radiator fins
- Contains gaskets, O-rings, or seals to properly replace the product
- Brass construction for accurate temperature sensing
- Zinc coated terminal to resist corrosion
- Vehicle specific applications
Imperial – Thermostatic Fan Control – Adjustable (Part No.226208)
from
$69.99
Our products are engineered and tested to provide years of trouble free operation. Backed by over 50 years of mobile a/c experience, fix it once and fix it right with Imperial.
Product Features:
See More
Product Features:
- Adjustable thermostatic fan control
- 160 Deg. F – 210 Deg. F thread-in probe
- For use with Imperial electric fans
- Thread-in probe for installation in water jacket or radiator
- Contains gaskets, O-rings, or seals to properly replace the product
- Brass construction for accurate temperature sensing
- Zinc coated terminal to resist corrosion
- Vehicle specific applications
Imperial – Electric Fan, 14" Diameter (Part No.226114)
from
$99.99
Our products are engineered and tested to provide years of trouble free operation. Backed by over 50 years of mobile a/c experience, fix it once and fix it right with Imperial.
Product Features:
See More
Product Features:
- Motors built and tested to quality specifications
- 14 in. universal fit reversible fan
- 1250 CFM
- UNIVERSAL fan, NOT a direct OE replacement. Measure core and verify space.
- Motors built and tested to quality specifications
- 14 in. universal fit reversible fan
- 1250 CFM
- UNIVERSAL fan, NOT a direct OE replacement. Measure core and verify space.
Felpro – Engine Water Pump Gasket (Part No.12967)
from
$5.49
Fel-Pro® gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.
Product Features:
See More
Product Features:
- Meets or exceeds all original equipment specifications
- Application specific design
- Manufactured for the sealing repair environment
- Validated for fit, form, and function
- Quality that you can trust
ACDelco – Engine Coolant Temperature Sensor (Part No.G1852)
from
$35.99
ACDelco Professional Engine Coolant Temperature Sender is a high quality aftermarket replacement component for one or more of the following vehicle systems: ignition, and/or engine fuel management. This premium aftermarket sender is manufactured to meet or exceed your expectations for fit, form, and function.
Product Features:
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Product Features:
- Professional, premium aftermarket replacement
- Provides the performance and dependability you expect from ACDelco
- Manufactured to meet expectations for fit, form, and function
Mr. Gasket – Thermocap Radiator Cap (Part No.2476BK)
from
$55.99
The fastest, easiest way to know exactly when it’s safe to open your radiator cap. ThermoCap, with its built-in calibrated thermometer, indicates the coolant temperature.
Product Features:
See More
Product Features:
- Indicates coolant temperature
- Helps prevent coolant injuries
- Fahrenheit and centigrade readings
- Color-coded temperature ranges
- Integrated coolant reclamation valve
- Improves under-hood appearance
- Chromed crown with a colored trim ring
Mr. Gasket – Thermocap Radiator Cap (Part No.2471S)
from
$51.99
Knowing your coolant temperature can help to prevent burn injuries. Thermocap Cap, with its built-in calibrated thermometer, indicates the coolant temperature. This is useful information prior to cap removal. Never attempt to remove Thermocap Cap when the coolant temperature is very hot. The escaping hot coolant and steam may burn you. Reclamation valve works great with your coolant recovery system. Your radiator can reclaim coolant from your overflow bottle. Wide 30 degree to 270 degree F temperature range. Calibrated in centigrade and Fahrenheit. Color-coded temperature ranges.
Product Features:
See More
Product Features:
- Indicates Coolant Temperature
- Helps to Prevent Injuries from coolant or steam burns
- Integrated Coolant Reclamation Valve
- Improves Underhood Appearance
- Fahrenheit and centigrade readings
- Various valve pressures available
Popular 1966 GMC L3500 Engine Cooling Parts Categories
Most Popular Radiator Caps for 1966 GMC L3500s
Enhance your 1966 GMC L3500 with one of the 2 Radiator Caps we have in stock, starting at just $51.99.
Mr. Gasket – Thermocap Radiator Cap (Part No.2471S)
from
$51.99
Knowing your coolant temperature can help to prevent burn injuries. Thermocap Cap, with its built-in calibrated thermometer, indicates the coolant temperature. This is useful information prior to cap removal. Never attempt to remove Thermocap Cap when the coolant temperature is very hot. The escaping hot coolant and steam may burn you. Reclamation valve works great with your coolant recovery system. Your radiator can reclaim coolant from your overflow bottle. Wide 30 degree to 270 degree F temperature range. Calibrated in centigrade and Fahrenheit. Color-coded temperature ranges.
Product Features:
See More
Product Features:
- Indicates Coolant Temperature
- Helps to Prevent Injuries from coolant or steam burns
- Integrated Coolant Reclamation Valve
- Improves Underhood Appearance
- Fahrenheit and centigrade readings
- Various valve pressures available
Mr. Gasket – Thermocap Radiator Cap (Part No.2476BK)
from
$55.99
The fastest, easiest way to know exactly when it’s safe to open your radiator cap. ThermoCap, with its built-in calibrated thermometer, indicates the coolant temperature.
Product Features:
See More
Product Features:
- Indicates coolant temperature
- Helps prevent coolant injuries
- Fahrenheit and centigrade readings
- Color-coded temperature ranges
- Integrated coolant reclamation valve
- Improves under-hood appearance
- Chromed crown with a colored trim ring
Best-Selling 1966 GMC L3500 Water Pump Gasket
Upgrade your L3500 with our best-selling Water Pump Gasket.
Felpro – Engine Water Pump Gasket (Part No.12967)
from
$5.49
Fel-Pro® gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.
Product Features:
See More
Product Features:
- Meets or exceeds all original equipment specifications
- Application specific design
- Manufactured for the sealing repair environment
- Validated for fit, form, and function
- Quality that you can trust
Top-Quality Engine Cooling Fan Controllers for 1966 GMC L3500s
Choose a high-quality OEM or aftermarket Engine Cooling Fan Controller for GMC L3500s and enjoy top-notch performance from $23.99.
Imperial – Adjustable Thermostatic Fan Control (Part No.226203)
from
$23.99
Our products are engineered and tested to provide years of trouble free operation. Backed by over 50 years of mobile a/c experience, fix it once and fix it right with Imperial.
Product Features:
See More
Product Features:
- Economy adjustable thermostatic fan control
- Economy Model; 32-248 Deg. F
- For use with Imperial electric fans
- Probe installs into radiator fins
- Contains gaskets, O-rings, or seals to properly replace the product
- Brass construction for accurate temperature sensing
- Zinc coated terminal to resist corrosion
- Vehicle specific applications
Imperial – Adjustable Thermostatic Fan Control (Part No.226204)
from
$65.99
Adjustable Thermostatic Fan Control. 160-210°F; push-in probe. Controls the operating temperature of Imperial electric fans. Operates up to 2 fans.
Product Features:
See More
Product Features:
- Adjustable thermostatic fan control
- 160-210°F push-in probe
- For use with Imperial electric fans
- Probe installs into radiator fins
Imperial – Thermostatic Fan Control – Preset (Part No.226206)
from
$46.99
Our products are engineered and tested to provide years of trouble free operation. Backed by over 50 years of mobile a/c experience, fix it once and fix it right with Imperial.
Product Features:
See More
Product Features:
- Preset thermostatic fan control
- 185 Deg. F preset
- For use with Imperial electric fans
- Probe installs into radiator fins
- Contains gaskets, O-rings, or seals to properly replace the product
- Brass construction for accurate temperature sensing
- Zinc coated terminal to resist corrosion
- Vehicle specific applications
Imperial – Thermostatic Fan Control – Adjustable (Part No.226208)
from
$69.99
Our products are engineered and tested to provide years of trouble free operation. Backed by over 50 years of mobile a/c experience, fix it once and fix it right with Imperial.
Product Features:
See More
Product Features:
- Adjustable thermostatic fan control
- 160 Deg. F – 210 Deg. F thread-in probe
- For use with Imperial electric fans
- Thread-in probe for installation in water jacket or radiator
- Contains gaskets, O-rings, or seals to properly replace the product
- Brass construction for accurate temperature sensing
- Zinc coated terminal to resist corrosion
- Vehicle specific applications
Top Picks for 1966 GMC L3500 Thermostat and Water Outlet Gaskets
Invest in one of our 2 durable Thermostat and Water Outlet Gaskets for your 1966 GMC, knowing you’re getting trusted brands and expert craftsmanship.
Mr. Gasket – Water Outlet Gasket (Part No.740C)
from
$9.99
This is a high quality gasket that will seal that leaking water neck, and provide you with years of service. This gasket works well in all applications.
Product Features:
See More
Product Features:
- Made From Cellulose/Nitrile Composition
- Provides Excellent Sealing And Durability
- These Gaskets Are Die Cut For a Precision Fit
- Fits Small Block Chevy V8 Engines 1955-’90
- Fits Big Block Chevy V8 Engines 1965-’90
- Fits Small Block Chrysler 318/360 1979-’92
- Fits Small Block Chrysler 3.9L/5.2L/5.9L Magnum 1992-’03
Mr. Gasket – Water Outlet Gasket (Part No.740)
from
$6.99
Manufactured from a blend of nitrile rubber and fiber for excellent sealing and durability. Precision die cut for application.
Product Features:
See More
Product Features:
- This gasket is bulk packaged
- Made from Cellulose/Nitrile Composition
- Provides Excellent Sealing and Durability
- These Gaskets are Die Cut for a Precision Fit
- Fits Small Block Chevy V8 Engines 1955-’90
- Fits Big Block Chevy V8 Engines 1965-’90
- Fits Small Block Chrysler 318/360 1979-’92
- Fits Small Block Chysler 3.9L/5.2L/5.9L Magnum 1992-’03
Our Top-Rated Radiator Fan Motors for 1966 GMC L3500s
Make a smart move for your 1966 GMC L3500 with our Radiator Fan Motor for $99.99.
Imperial – Electric Fan, 14" Diameter (Part No.226114)
from
$99.99
Our products are engineered and tested to provide years of trouble free operation. Backed by over 50 years of mobile a/c experience, fix it once and fix it right with Imperial.
Product Features:
See More
Product Features:
- Motors built and tested to quality specifications
- 14 in. universal fit reversible fan
- 1250 CFM
- UNIVERSAL fan, NOT a direct OE replacement. Measure core and verify space.
- Motors built and tested to quality specifications
- 14 in. universal fit reversible fan
- 1250 CFM
- UNIVERSAL fan, NOT a direct OE replacement. Measure core and verify space.
Top-Rated Engine Cooling Part Brands For Your 1966 GMC L3500
When it comes to finding the perfect Engine Cooling Part for your 1966 GMC L3500, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 4 trusted brands. We carry the most popular Engine Cooling Part brands including Imperial, and more, all known for their exceptional customer ratings (average brand rating of 4.1 stars) and competitive prices, as low as $23.99. Purchasing a Engine Cooling Part from us here at Advance Auto Parts is a smart move for both you and your 1966 GMC L3500, providing peace of mind with parts that meet or exceed OEM standards.
Popular Imperial 1966 GMC L3500 Engine Cooling Parts
If you’re looking for a top-quality Engine Cooling Part for your 1966 GMC L3500, Advance Auto Parts has exactly what you need with our selection of Imperial Engine Cooling Parts. We have 1 Imperial Engine Cooling Parts in stock for this fitment, all known for their durability and precision fit. With prices starting at just $23.99, you’ll find the perfect Engine Cooling Part for your needs and budget. Imperial Engine Cooling Parts for the 1966 GMC L3500 come highly rated, with over 35 customer reviews and an impressive average rating of 4.1 stars. Choosing a Imperial Engine Cooling Part from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.
from
$23.99
(35)
Adjustable Thermostatic Fan Control
“good price, but does not come with knob to set temp”
FAQs for 1966 GMC L3500 Engine Cooling Parts
What are the best-selling Engine Cooling Parts for 1966 GMC L3500s?
Out of 11 Engine Cooling Parts that fit 1966 GMC L3500s, the following parts are the top sellers:
- Thermostatic Fan Control – Preset (3670008) – $46.99
- Engine Coolant Temperature Sensor (11872063) – $35.99
- Thermocap Radiator Cap (10648825) – $55.99
What’s the price range for 1966 GMC L3500 Engine Cooling Parts?
The prices of Engine Cooling Parts for the 1966 GMC L3500 range from $5.49 up to $99.99 for the most premium parts.
What is the average price of an Engine Cooling Part for a 1966 GMC L3500?
The average price for Engine Cooling Parts for the 1966 GMC L3500 is $48.92. Keep in mind the variety of part types within our Engine Cooling Part category, where you are likely to find a wide range of prices across a variety of parts and components.
What are the cheapest Engine Cooling Parts for my 1966 GMC L3500?
The cheapest 1966 GMC L3500 Engine Cooling Parts we carry are:
- Engine Water Pump Gasket (20680642) – $5.49
- Water Outlet Gasket (17360269) – $6.99
- Water Outlet Gasket (6120954) – $9.99
- Adjustable Thermostatic Fan Control (6016936) – $23.99
- Engine Coolant Temperature Sensor (11872063) – $35.99
Does Advance Auto Parts sell Engine Cooling Parts for any other 1966 GMC models?
Yes. We stock Engine Cooling Parts for 20 other popular 1966 GMC models. Some of the most popular are 1966 K15/K1500 Pickup Engine Cooling Parts, 1966 Suburban Engine Cooling Parts, 1966 G1000 Series Engine Cooling Parts, 1966 PB1000 Series Engine Cooling Parts, and 1966 I1500 Engine Cooling Parts.
What are the top-rated Engine Cooling Parts that fit the 1966 GMC L3500?
Based on 554 reviews by customers, our 1966 GMC L3500 Engine Cooling Parts have an average customer rating of 4 stars. These are the highest-rated categories of Engine Cooling Parts for the 1966 GMC L3500 and their top-rated products:
- Radiator Fan Motors
- Electric Fan, 14" Diameter (6014933) – $99.99
- Radiator Caps
- Thermocap Radiator Cap (6900022) – $51.99
- Thermostat and Water Outlet Gaskets
- Water Outlet Gasket (6120954) – $9.99
What types of Engine Cooling Parts do you sell for my 1966 GMC L3500?
As of 11/2/25, these are some of the most in-demand types of Engine Cooling Parts for a 1966 GMC L3500:
Can I get help with 1966 GMC L3500 Engine Cooling Part orders?
Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about GMC Engine Cooling Parts and more.
What is your return policy for GMC L3500 Engine Cooling Parts?
Advance Auto Parts keeps returns simple. For new GMC L3500 Engine Cooling Parts and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.