GM 85170645 Fuel Tank

( Brand: Gm ), ( Manufacturer Part Number: 85170645 ), ( Model: 1500 1500 1500 ), ( Part Type: Fuel Tank ), ( Genuine Oem: Yes ), ( Manufacturer Warranty: 1 Year ), ( Fitment Type: Direct Replacement ), ( Make: Gmc ), ( Year: 2019 2020 2021 2022 2023 2024 ), ( Parts Included: Only Part Reference 1 On The Diagram Is Included ), ( Replaces Part Number: 84069784, 84619575 )

Review GM Genuine Fuel Tank fits 1500 2019–2024

The **GM 85170645 Fuel Tank** is a high-performance, precision-engineered component designed to meet the stringent demands of modern automotive and off-road applications, particularly within General Motors lineup of trucks, SUVs, and performance vehicles. Crafted from durable, corrosion-resistant materials typically high-grade steel or reinforced aluminum this fuel tank is built to withstand the rigors of daily driving, extreme temperatures, and prolonged exposure to harsh environmental conditions. Its robust construction ensures structural integrity while minimizing the risk of leaks, cracks, or deformation, even under heavy loads or during off-road adventures where vibrations and impacts are common. The tank s seamless design incorporates advanced welding techniques to eliminate weak points, enhancing both safety and longevity, and its smooth, aerodynamic contours help optimize fuel efficiency by reducing drag and turbulence within the vehicle s undercarriage.

Inside, the GM 85170645 features a sophisticated internal baffling system, which stabilizes the fuel during sharp turns, acceleration, or sudden braking, preventing sloshing that could lead to fuel starvation or engine stalling. This internal architecture also helps maintain a consistent fuel flow to the engine, contributing to smoother operation and reduced wear on fuel delivery components. The tank is equipped with a secure, leak-proof fuel line connection system, often featuring a quick-connect or threaded fitting, ensuring a tight seal that resists vibration-induced loosening. Additionally, it may include integrated fuel level sensors or mounting brackets tailored to the specific vehicle model, allowing for seamless integration into the chassis without the need for extensive modifications.

Beyond its functional excellence, the GM 85170645 is engineered with compatibility in mind, serving as an exact replacement for OEM (Original Equipment Manufacturer) fuel tanks in a variety of GM vehicles, including select models from the Chevrolet, GMC, and Cadillac lines. Whether installed in a rugged Silverado pickup, a versatile Tahoe SUV, or a high-performance Escalade, this tank delivers reliable performance and peace of mind for drivers who demand durability and efficiency. Its compatibility extends beyond standard applications, making it a preferred choice for aftermarket enthusiasts and fleet operators seeking to upgrade or replace worn-out components without compromising on quality. With a focus on both performance and reliability, the GM 85170645 fuel tank stands as a testament to GM s commitment to engineering components that meet the highest standards of automotive excellence.

**Pros and Cons of Buying a GM 85170645 Fuel Tank**

The GM 85170645 is a fuel tank commonly used in General Motors vehicles, particularly in older models like the Chevrolet Silverado, GMC Sierra, and some GMC Savana vans. Below is a detailed analysis of its advantages and disadvantages.

1. **Compatibility** This fuel tank is designed specifically for certain GM vehicles, ensuring a proper fit without modifications. It is widely used in models from the late 1990s to early 2000s, making it a reliable replacement for common failures.

2. **Durability** GM fuel tanks are generally built to last, especially if they are original or high-quality aftermarket replacements. They are typically made from steel or aluminum, which can withstand corrosion and mechanical stress better than some lower-quality alternatives.

3. **Widespread Availability** Due to its popularity, this fuel tank is easy to find at auto parts stores, online marketplaces, and through GM dealerships. Spare parts and related components (like fuel lines and pumps) are also readily available.

4. **Proven Performance** Since it has been used in production vehicles for years, its design has been tested under various conditions. This reduces the risk of unexpected failures compared to unproven or custom-made alternatives.

5. **Cost-Effective Replacement** While prices vary, this fuel tank is generally affordable compared to some specialty or high-performance fuel systems. The cost is often justified by its reliability and ease of installation.

6. **Standardized Design** The tank s design is standardized for its application, meaning it integrates seamlessly with the vehicle s fuel system, including the fuel pump, sender unit, and mounting brackets.

7. **Long-Term Reliability** If properly installed and maintained, this fuel tank can last for the lifespan of the vehicle, reducing the need for frequent replacements.

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1. **Age-Related Wear** Many GM vehicles that require this fuel tank are older models, which may already have other aging components (e.g., fuel lines, clamps, or electrical connections) that could fail during installation or use. This may require additional repairs beyond just replacing the tank.

2. **Corrosion Risk** Older fuel tanks, especially steel ones, are susceptible to rust and corrosion, particularly if the vehicle has been exposed to salt, moisture, or poor maintenance. A new replacement tank should mitigate this, but the surrounding area (like the fuel lines or mounting points) may still need inspection.

3. **Potential Leaks** Fuel tanks, even new ones, can develop leaks if not installed correctly or if the seals or clamps are damaged. Improper installation (e.g., overtightening or using the wrong gaskets) can lead to fuel leaks, which are both hazardous and costly to repair.

4. **Weight Considerations** Steel fuel tanks are heavier than aluminum or plastic alternatives. While this adds to the tank s durability, it may require additional support or adjustments to the vehicle s suspension or frame, especially in older models with worn-out components.

5. **Compatibility Issues with Modifications** If the vehicle has been modified (e.g., with a larger engine, turbocharger, or aftermarket fuel system), the stock fuel tank may not provide adequate fuel capacity or flow rate. In such cases, an upgraded tank or additional fuel system components may be necessary.

6. **Environmental and Safety Concerns** Fuel tanks contain flammable liquids, and improper handling during installation or disposal can pose safety risks. It s important to follow proper procedures for draining, handling, and disposing of the old tank to avoid spills or fires.

7. **Limited Lifespan in Harsh Conditions** In extreme climates (e.g., very cold or very hot environments), some fuel tanks may experience issues such as fuel line freezing, fuel degradation, or expansion/contraction problems. While this is not unique to the GM 85170645, it is worth considering for vehicles operating in such conditions.

8. **Counterfeit or Low-Quality Replacements** Some aftermarket fuel tanks may be counterfeit or poorly made, leading to premature failure, leaks, or compatibility issues. Purchasing from reputable suppliers (e.g., GM dealerships, OEM parts stores, or trusted online retailers) helps mitigate this risk.

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The GM 85170645 fuel tank is a practical and reliable replacement for its intended applications, particularly in older GM vehicles where the original tank has failed. Its advantages such as compatibility, durability, and ease of replacement make it a strong choice for most drivers. However, potential drawbacks like corrosion risks, installation challenges, and the need for additional maintenance in older vehicles should be carefully considered.

For vehicles with no major underlying issues (e.g., rusted frames, worn fuel lines, or electrical problems), this tank is a sound investment. If the vehicle has significant wear or has been modified, additional repairs or upgrades may be necessary to ensure the fuel system operates safely and efficiently.

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1. **Verify Compatibility** Double-check that the GM 85170645 is the correct part for your specific vehicle model and year. Consult your vehicle s service manual or a trusted mechanic if unsure.

2. **Inspect the Surrounding System** Before installing the new tank, inspect the fuel lines, clamps, sender unit, and mounting brackets for signs of wear, corrosion, or damage. Replace any compromised components to prevent future issues.

3. **Purchase from a Reputable Source** Buy the fuel tank from an authorized GM dealer, an OEM parts supplier, or a well-reviewed online retailer to ensure you re getting a genuine, high-quality product. Avoid overly cheap alternatives that may compromise safety.

4. **Professional Installation** If you re not experienced with fuel system repairs, have the tank installed by a qualified mechanic. Improper installation can lead to leaks, fuel spills, or even fires. If you choose to DIY, follow safety guidelines (e.g., proper grounding, venting, and fuel drainage) and work in a well-ventilated area.

5. **Maintain the Fuel System** Regularly check for leaks, corrosion, and proper fuel line integrity. Consider using fuel stabilizers if the vehicle will be stored for extended periods to prevent fuel degradation.

6. **Consider Upgrades if Needed** If your vehicle has been modified or operates in extreme conditions, evaluate whether a larger-capacity tank or additional fuel system components (e.g., a high-flow fuel pump) would be beneficial.

In summary, the GM 85170645 fuel tank is a solid choice for its intended use, provided you address potential underlying issues and ensure proper installation. For most drivers replacing a failed original tank, it offers a balance of reliability and cost-effectiveness.

Details:

Orders are shipped FedEx or UPS for a faster arrival time. Parts must be resalable and in the original packaging. Shipping Carrier substitutions may be made at our determination in an attempt to reduce shipping cost the customer. Most parts are sold as singles, even if an image shows multiple in a pack.

Then the product is resealed with special strapping tape to insure a strong hold, and avoid tampering. They are still sold as a single item. Electrical parts are not returnable. All products sold are opened and inspected before we finalize the order.

part #: 85170645 prices

• $562.86-$654.24

specifications fueltanksysteme:

• for years: 2019-2024
• brand: Gm
• mpn: 85170645
• model: 1500 1500 1500
• part type: Fuel Tank
• genuine oem: Yes
• manufacturer warranty: 1 Year
• fitment type: Direct Replacement
• make: Gmc
• year: 2019 2020 2021 2022 2023 2024
• parts included: Only Part Reference 1 On The Diagram Is Included
• replaces part number: 84069784, 84619575

seller fueltanksysteme:

• city: Henrico, Virginia
• # reviews: 546
• rating: 100.0%

offer fueltanksysteme:

• started: February 19, 2026
• availability: In Stock
• quantity: 2
• sold: 0
• options: Ship-to-home

payments fueltanksysteme:

• other
• credit card: Mastercard
• wallet: Google-pay

returns fueltanksysteme:

• policy: Returns Accepted
• paid by: Seller
• time: 30 Days

general fueltanksysteme:

• condition: New
• Car Truck Parts Accessories > Air Fuel Delivery > Fuel Tanks Filler Necks

shipping fueltanksysteme:

• class: Standard, Expedited, One-day
• service: Standard, Expedited, Overnight
• transit: 2-5 Days
• cost: $119.59
• type: Fixed

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