Best GM Genuine Parts Assemblies

Looking for the best GM Genuine Parts assemblies to keep your vehicle running smoothly? We’ve compiled a list of 10 top-quality assemblies designed for durability and dependable performance, ensuring your GM vehicle stays road-ready.

When it comes to keeping your GM vehicle in top shape, GM Genuine Parts are the smartest choice. They are built to fit perfectly and perform reliably. You can trust them to keep your car running smoothly.

These essential assemblies are designed for durability. They ensure your vehicle’s key systems work as they should.

Choosing GM Genuine Parts means choosing quality and peace of mind. You get long-lasting performance and dependable operation. Explore the best assemblies to ensure your GM vehicle stays road-ready.

List of Top 10 GM Genuine Parts Assemblies

Title	Best For	Price
GM Genuine Parts 178-1036 (19371361) Power Brake Booster Assembly	This GM Genuine Parts Power Brake Booster Assembly is perfect for vehicle owners who need to restore their car’s braking power. It’s designed for quick and easy installation, ensuring your vehicle is safe and reliable on the road.	View on Amazon (paid link)
GM Genuine Parts 84856654 Front Wheel Hub and Bearing Assembly with Wheel Speed Sensor	This GM Genuine Parts Front Wheel Hub and Bearing Assembly is perfect for GM vehicle owners who demand top-tier performance and reliability. It’s built to ensure your wheels turn smoothly and your ride stays stable, offering long-lasting durability and a perfect fit for your specific GM car.	View on Amazon (paid link)
GM Genuine Parts 84856655 Front Wheel Hub and Bearing Assembly with Wheel Speed Sensor	This GM Genuine Parts Front Wheel Hub and Bearing Assembly is perfect for anyone needing a reliable replacement for their GM vehicle. It’s designed for a perfect fit and long-lasting performance, making it ideal for drivers who value safety and quality.	View on Amazon (paid link)
GM Genuine Parts 15-11057 (12600172) Engine Coolant Thermostat Water Inlet Assembly	This GM Genuine Parts Engine Coolant Thermostat Water Inlet Assembly is perfect for anyone who needs to fix a leaking thermostat housing or stop their engine from overheating. It’s a reliable, GM-recommended replacement that fits just like the original part.	View on Amazon (paid link)
GM Genuine Parts 87863488 Front Half-Shaft Assembly	This GM Genuine Parts 87863488 Front Half-Shaft Assembly is perfect for drivers who want to keep their Chevrolet, Buick, GMC, or Cadillac running strong. It fits those who need a reliable part that works just like the original. If you want a part made by GM engineers with top quality and tested for your vehicle, this is the right choice.	View on Amazon (paid link)
GM Genuine Parts 15-11125 (12674639) Water Pump Outlet Assembly with Thermostat	GM vehicle owners needing to fix a leaking thermostat housing. This GM-recommended part matches the original for fit, quality, and performance.	View on Amazon (paid link)
GM Genuine Parts 85724972 Engine Oil Cooler Hose	This GM Genuine Parts 85724972 Engine Oil Cooler Hose is perfect for car owners who want to keep their engine cool and running smoothly. It fits Chevrolet, Buick, GMC, and Cadillac vehicles and is great for anyone who needs a reliable, high-quality part designed by GM engineers.	View on Amazon (paid link)
GM Genuine Parts 84621036 Front Driver Side Door Window Regulator	This GM Genuine Parts 84621036 Front Driver Side Door Window Regulator is perfect for GM vehicle owners who need a reliable, factory-quality replacement for their original part. It’s designed to fit and function just like the original, ensuring your car’s window operates smoothly and dependably.	View on Amazon (paid link)
GM Genuine Parts 12639087 Intake Manifold Assembly	This intake manifold assembly is perfect for GM vehicle owners who want a reliable replacement part. It’s made to fit your GM car just like the original, offering quality and durability you can trust.	View on Amazon (paid link)
GM Genuine Parts FW382 (13531686) Front Wheel Hub and Bearing Assembly	This GM Genuine Parts FW382 Front Wheel Hub and Bearing Assembly is perfect for car owners who want reliable and long-lasting parts. It fits GM vehicles exactly and helps your wheels turn smoothly and safely. If you care about strong performance and durability, this part is made just for you.	View on Amazon (paid link)

Detailed Reviews

Discover the best GM Genuine Parts Assemblies chosen for their quality, fit, and durability. Each part is carefully reviewed to ensure it meets high standards and delivers reliable performance. Trust this guide to help you find the perfect part for your GM vehicle with confidence.

1. GM Genuine Parts 178-1036 (19371361) Power Brake Booster Assembly

The GM Genuine Parts 178-1036 Power Brake Booster Assembly is designed to restore your brake power and performance. It helps keep your brakes working at their best. This part is a reliable replacement for worn-out brake boosters.

Installation is quick and easy. The master cylinder output rods are pre-adjusted. This saves you time and effort during installation.

This product is tested for reliable performance. It has an exclusive rust-prohibitive finish. This helps extend its life and ensure long-term durability.

Pros	Cons
Restores brake power, ensuring safe, reliable performance. Pre-adjusted rods mean quick, easy installation. Rust-prohibitive finish extends unit life. Tested for reliability, so you drive with confidence.	Price may be high for some buyers. No warranty details provided for long-term use. Compatibility limited to specific vehicle models.

Perfect For:

This GM Genuine Parts Power Brake Booster Assembly is perfect for vehicle owners who need to restore their car’s braking power. It’s designed for quick and easy installation, ensuring your vehicle is safe and reliable on the road.

Ready to Purchase?

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2. GM Genuine Parts 84856654 Front Wheel Hub and Bearing Assembly with Wheel Speed Sensor

Keep your GM vehicle running smoothly with the GM Genuine Parts 84856654 Front Wheel Hub and Bearing Assembly. This essential part supports your vehicle while letting your wheels spin freely. It’s designed for a perfect fit and top performance.

Experience superior handling and a smoother ride. This high-quality assembly ensures lasting durability and reliable function for your GM car.

Pros	Cons
Supports your vehicle with maximum lateral stiffness for better handling. GM-specific design ensures perfect fit and long-term performance. High-grade steel protects against damage from curbs and potholes. Thermal shock tested for reliable low-temperature performance.	Fits only GM vehicles — not universal for all cars. Installation may require professional help due to complexity. Higher price point compared to generic wheel hub assemblies.

Perfect For:

This GM Genuine Parts Front Wheel Hub and Bearing Assembly is perfect for GM vehicle owners who demand top-tier performance and reliability. It’s built to ensure your wheels turn smoothly and your ride stays stable, offering long-lasting durability and a perfect fit for your specific GM car.

Ready to Purchase?

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3. GM Genuine Parts 84856655 Front Wheel Hub and Bearing Assembly with Wheel Speed Sensor

This front wheel hub and bearing assembly supports the vehicle while letting the wheel spin. It offers maximum lateral stiffness for better ride and handling. The GM specific design ensures proper fit and function.

High quality manufacturing and high capacity ball or roller designs boost long-term durability. The certified high-grade steel resists damage from impacts like potholes.

It passes a strict thermal shock test for cold-weather reliability. Controlled dimensions help all wheel parts work smoothly together. You get dependable performance and smooth operation.

Pros	Cons
Strong support for smooth wheel rotation. High-quality build for long-lasting performance. Precise fit for GM vehicles. Protects bearings from damage and impact. Improved handling and driving stability.	Pricey compared to generic alternatives. Installation may require professional help. Limited compatibility with non-GM vehicles.

Perfect For:

This GM Genuine Parts Front Wheel Hub and Bearing Assembly is perfect for anyone needing a reliable replacement for their GM vehicle. It’s designed for a perfect fit and long-lasting performance, making it ideal for drivers who value safety and quality.

Ready to Purchase?

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4. GM Genuine Parts 15-11057 (12600172) Engine Coolant Thermostat Water Inlet Assembly

Fix leaks and stop overheating with this GM Genuine Parts assembly. It’s the perfect fit for your GM vehicle. Trust GM quality for lasting performance.

This part repairs thermostat housings and prevents engine damage. It’s made to GM standards, so it works just like the original.

Durable steel ensures long-lasting use. It’s GM-recommended, so you know it’s right for your car.

Pros	Cons
Fixes leaks in your engine thermostat housing quickly. Prevents overheating for a safer, smoother engine run. GM-approved part ensures reliable performance and fit. Durable steel construction for long-lasting engine protection. Easy replacement for your GM vehicle’s original part.	May not fit all GM models. Higher price than aftermarket options. Requires professional installation for best results.

Perfect For:

This GM Genuine Parts Engine Coolant Thermostat Water Inlet Assembly is perfect for anyone who needs to fix a leaking thermostat housing or stop their engine from overheating. It’s a reliable, GM-recommended replacement that fits just like the original part.

Ready to Purchase?

View Price on Amazon (paid link)

5. GM Genuine Parts 87863488 Front Half-Shaft Assembly

The GM Genuine Parts 87863488 Front Half-Shaft Assembly is built to keep your vehicle moving smoothly. It helps transfer torque from the transmission or differential directly to the wheels.

This part is made with high standards. It was tested by GM engineers. It fits Chevrolet, Buick, GMC, and Cadillac vehicles.

GM updates its parts often to use the latest materials. This means you get a strong, reliable product every time. Trust GM Genuine Parts to keep your ride safe.

Pros	Cons
Transfers power to your wheels. Engineered for your GM vehicle. Tested for top performance. Backed by General Motors quality. Latest technology integrated.	Limited to specific GM vehicles, not universal fit. Higher cost compared to aftermarket alternatives. No DIY-friendly installation, professional help may be needed.

Perfect For:

This GM Genuine Parts 87863488 Front Half-Shaft Assembly is perfect for drivers who want to keep their Chevrolet, Buick, GMC, or Cadillac running strong. It fits those who need a reliable part that works just like the original. If you want a part made by GM engineers with top quality and tested for your vehicle, this is the right choice.

Ready to Purchase?

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6. GM Genuine Parts 15-11125 (12674639) Water Pump Outlet Assembly with Thermostat

The GM Genuine Parts 15-11125 Water Pump Outlet Assembly with thermostat is a high-quality replacement part. It is designed to fix leaking thermostat housings in GM vehicles.

This part is GM-recommended, ensuring it matches your vehicle’s original factory component. It offers the quality, reliability, and durability of GM OE parts. It is built to GM OE specifications for perfect fit, form, and function.

Installing this part will restore your vehicle’s cooling system. It ensures proper performance and long-lasting reliability. Trust GM Genuine Parts for a secure fit and high quality.

Pros	Cons
Fixes thermostat housing leaks effectively GM-recommended part ensures proper fit Matches OE durability and reliability Built to OE standards for perfect fit Trusted by mechanics for quality	Higher price than some aftermarket alternatives May require professional installation for best results Limited to GM vehicle models only

Perfect For:

GM vehicle owners needing to fix a leaking thermostat housing. This GM-recommended part matches the original for fit, quality, and performance.

Ready to Purchase?

View Price on Amazon (paid link)

7. GM Genuine Parts 85724972 Engine Oil Cooler Hose

Keep your engine running cool with the GM Genuine Parts 85724972 Engine Oil Cooler Hose. This vital part helps maintain optimal engine temperatures. It’s built to handle the heat of oil transfer and the flexibility of engine movement.

Engineered by GM, this hose is specifically designed for your Chevrolet, Buick, GMC, or Cadillac. It’s rigorously tested to ensure top performance and durability. You can trust GM Genuine Parts for quality and reliability.

This hose is a direct fit for your vehicle. Get peace of mind with genuine GM quality.

Pros	Cons
Keeps engine oil at the right temperature for smooth runs Built to handle hot oil without breaking down Flexes with engine movement for long-lasting use Made by GM engineers for your Chevrolet, Buick, GMC, or Cadillac Tested and backed by General Motors for trusted quality	Price may be higher than non-GM alternatives Limited fit only for specific GM vehicles Replacement may require professional installation

Perfect For:

This GM Genuine Parts 85724972 Engine Oil Cooler Hose is perfect for car owners who want to keep their engine cool and running smoothly. It fits Chevrolet, Buick, GMC, and Cadillac vehicles and is great for anyone who needs a reliable, high-quality part designed by GM engineers.

Ready to Purchase?

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8. GM Genuine Parts 84621036 Front Driver Side Door Window Regulator

This GM Genuine Part replaces your front driver side window regulator. It matches the original for fit and function. Durable design ensures long-term use.

Made to GM OE specifications, it guarantees reliable performance. For setup, consult a GM Dealer or ACDelco Service Center.

Trusted replacement for smooth window operation. Backed by GM’s quality and engineering standards.

Pros	Cons
Direct GM replacement for your car. Reliable GM quality you can trust. Fits and works like the original. Guaranteed GM performance and durability.	May require professional installation. Check compatibility for your specific GM model.

Perfect For:

This GM Genuine Parts 84621036 Front Driver Side Door Window Regulator is perfect for GM vehicle owners who need a reliable, factory-quality replacement for their original part. It’s designed to fit and function just like the original, ensuring your car’s window operates smoothly and dependably.

Ready to Purchase?

View Price on Amazon (paid link)

9. GM Genuine Parts 12639087 Intake Manifold Assembly

The GM Genuine Parts 12639087 Intake Manifold Assembly fits perfectly on many GM vehicles. It comes in thermoplastic, aluminum, and cast iron options. Each type is made for a specific use.

This part is always updated and improved. It includes the latest technical service bulletins. You get the best design every time.

It matches your car’s original factory part exactly. You can trust its quality and durability. This part is made to GM’s exact standards.

Pros	Cons
GM-recommended part for perfect fit and function. Enhanced designs with latest updates for better performance. Durable materials like thermoplastic and aluminum for longevity. Manufactured to GM standards for quality and reliability.	Limited to GM vehicles, not universal. Higher cost compared to aftermarket options. Complex installation may require professional help.

Perfect For:

This intake manifold assembly is perfect for GM vehicle owners who want a reliable replacement part. It’s made to fit your GM car just like the original, offering quality and durability you can trust.

Ready to Purchase?

View Price on Amazon (paid link)

10. GM Genuine Parts FW382 (13531686) Front Wheel Hub and Bearing Assembly

The GM Genuine Parts FW382 Front Wheel Hub and Bearing Assembly is designed to support your vehicle while allowing the wheel to rotate smoothly. It provides maximum lateral stiffness, improving ride quality and driving dynamics. This assembly is specifically designed for GM vehicles, ensuring a proper fit.

The high-quality manufacturing process ensures consistency and long-term performance. It features high-capacity ball or roller designs, creating a longer rotating fatigue life. The bearing steel is certified high-grade, ensuring smaller non-metallic inclusions for better durability.

This product is designed to protect the bearing from damage caused by impacts. It also passes a thermal shock test for improved low-temperature performance.

Pros	Cons
Supports your vehicle while letting wheels spin smoothly. Strong and stiff for better ride and handling. Made precisely to fit GM vehicles perfectly. Built tough to last long and resist damage. Tested for cold to work well in all weather.	May require specialized tools for installation. Specific GM fit means limited compatibility with other brands. Higher upfront cost for genuine OEM quality.

Perfect For:

This GM Genuine Parts FW382 Front Wheel Hub and Bearing Assembly is perfect for car owners who want reliable and long-lasting parts. It fits GM vehicles exactly and helps your wheels turn smoothly and safely. If you care about strong performance and durability, this part is made just for you.

Ready to Purchase?

View Price on Amazon (paid link)

Buying Guide

Keeping your GM vehicle in top shape is easy with GM Genuine Parts. They fit perfectly and work reliably. You get peace of mind knowing your car runs smoothly.

Buying the best GM Genuine Parts assemblies means making smart choices. Here are the key factors to consider:

Fit and Compatibility: Always choose parts made specifically for your GM vehicle model. This ensures a perfect fit and smooth installation. Genuine parts match your car’s original design exactly.
Durability: Look for assemblies built to last. GM Genuine Parts use high-quality materials and finishes that resist rust and wear. Durable parts save you money by reducing replacements.
Performance: Select parts tested for reliable operation. Assemblies like brake boosters and wheel hubs are designed to maintain your vehicle’s safety and handling. Trust parts that meet GM’s strict standards.
Ease of Installation: Some parts come pre-adjusted or ready to install, saving you time and effort. This is especially helpful for assemblies like brake boosters with pre-set rods.
Manufacturer Standards: Choose parts made to GM Original Equipment (OE) specifications. This guarantees the part’s form, fit, and function match the factory component exactly.
Warranty and Support: Genuine GM parts often come with warranties and dealer support. This adds confidence and protection for your investment.
Application Range: Check if the part fits multiple GM brands like Chevrolet, Buick, GMC, or Cadillac. This can be useful if you own more than one GM vehicle.
Testing and Quality Control: Parts that pass thermal shock tests and impact resistance checks ensure reliability in all conditions. This is important for assemblies exposed to harsh environments.
Material Quality: Certified high-grade steel and durable thermoplastics improve part longevity. High-quality materials resist damage from road impacts and temperature changes.

Choosing GM Genuine Parts assemblies means you get the best for your vehicle. They keep your car road-ready with trusted quality and lasting performance.