DORMAN 576-627 Fuel Tank Lock Ring Seal 885484539594

( Brand: Dorman ), ( Manufacturer Part Number: 576-627 ), ( Part Type: Fuel Ring Seal Tank Lock ), ( Manufacturer Warranty: 1 Year ), ( California Prop 65 Warning: This Product Contains Chemicals Known To The State Of California To Cause Cancer And Birth Defects Or Other Reproductive Harm. ), ( Genuine Oem: 3c3z9002ga, 5c3z9002ga, 6c3z9002c, 6c3z9002g, 6c3z ), ( UPC: 885484539594 ), ( Item Length: 33.5 In ), ( Item Width: 33 In )

Review DORMAN Oe Solutions Fuel Tank Lock Ring And Seal

The **Dorman 576-627 Fuel Tank Lock Ring Seal** is a high-quality, precision-engineered replacement part designed to ensure a secure and leak-proof seal between the fuel tank and its associated components, such as the fuel pump or sender unit. Crafted from durable, fuel-resistant materials, this lock ring seal is engineered to withstand the harsh conditions of automotive fuel systems, including exposure to gasoline vapors, temperature fluctuations, and mechanical stress. Its unique design features a tight, interference-fit construction that prevents loosening over time, reducing the risk of fuel leaks, vapor emissions, or contamination that could compromise engine performance or trigger check engine lights. Ideal for a wide range of applications, including late-model General Motors vehicles, this seal is built to meet or exceed OEM specifications, ensuring compatibility with fuel tanks equipped with standard lock ring mounting systems. Whether used in replacement or maintenance scenarios, the Dorman 576-627 provides a reliable barrier against fuel seepage while maintaining structural integrity under repeated pressure cycles. Its straightforward installation requiring only basic tools makes it a practical choice for both professional mechanics and DIY enthusiasts seeking a long-lasting solution for fuel system integrity.

### **Pros and Cons of buying a Dorman 576-627 Fuel Tank Lock Ring Seal**

The Dorman 576-627 fuel tank lock ring seal is a widely recognized aftermarket part designed to replace the original lock ring and seal on fuel tanks, particularly in applications like GM vehicles with the 576-627 fuel tank assembly.

1. **Compatibility and Fitment** Dorman is a trusted brand known for producing high-quality, direct-fit replacement parts. This seal is specifically engineered to match the dimensions and mounting points of the original equipment manufacturer (OEM) lock ring and seal, reducing the risk of installation issues.

2. **Reliability and Durability** Dorman parts are manufactured to meet or exceed OEM standards, ensuring long-lasting performance. The seal is designed to maintain a tight, leak-proof fit, preventing fuel leaks and vapor loss, which is critical for both safety and fuel efficiency.

3. **Ease of Installation** The part is straightforward to install, especially for those with basic mechanical skills. It typically requires only standard tools (like a lock ring pliers or a socket set) and does not require specialized equipment. The clear labeling and design make it easier to identify the correct orientation during installation.

4. **Cost-Effective Solution** Compared to purchasing an entire new fuel tank, this seal is a fraction of the cost. It provides a practical way to address issues like a leaking or damaged lock ring without a full tank replacement, saving both time and money.

5. **Widespread Availability** Dorman parts are widely stocked by auto parts retailers, both online and in physical stores. This makes it easy to purchase without long wait times or shipping delays.

6. **Prevents Fuel Contamination** A failing lock ring seal can allow moisture, dirt, or debris to enter the fuel system, contaminating the fuel and potentially damaging the fuel pump or injectors. Replacing the seal helps maintain a clean fuel environment.

7. **Safety Improvement** Fuel leaks pose a fire hazard. A properly sealed lock ring reduces the risk of fuel spills, making the vehicle safer to operate.

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While the Dorman 576-627 fuel tank lock ring seal is generally reliable, there are a few potential drawbacks to consider before purchasing.

1. **Potential for Counterfeit Parts** Like many aftermarket parts, there is a risk of purchasing a counterfeit or low-quality imitation, especially if buying from untrusted sellers. Counterfeit parts may not fit correctly, leak, or fail prematurely. Always verify the seller s reputation and purchase from authorized retailers or well-known online marketplaces.

2. **Installation Challenges for Inexperienced DIYers** Although the installation is relatively simple, improper handling of the lock ring (e.g., overtightening or misalignment) can damage the seal or the fuel tank flange. This may require professional assistance if the installer lacks experience with fuel system components.

3. **Limited Lifespan Compared to OEM** While Dorman parts are high-quality, they may not last as long as an OEM seal in extreme conditions (e.g., high mileage, aggressive driving, or exposure to harsh chemicals). Over time, the rubber or elastomer material can degrade due to fuel additives, heat, or UV exposure.

4. **Compatibility Variations** While Dorman parts are designed to fit specific applications, there can be slight variations in fuel tank designs between vehicle models or years. Double-checking the fitment against your exact vehicle (including year, make, and model) is essential to avoid purchasing the wrong part.

5. **Fuel Tank Condition Matters** If the fuel tank itself is corroded, dented, or otherwise damaged, replacing just the lock ring seal may not be sufficient. A compromised tank could still leak at other points, rendering the seal replacement ineffective. A thorough inspection of the tank is recommended before installation.

6. **Potential for Over-Tightening** The lock ring must be tightened securely to create a seal, but overtightening can strip the threads or damage the tank flange. Using the correct tool and following the manufacturer s torque specifications is crucial.

7. **Limited Warranty** Dorman offers warranties on their parts, but the coverage may be limited compared to OEM parts. If the seal fails prematurely due to a manufacturing defect, the warranty may not cover labor costs, adding to the expense if professional installation is required.

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The Dorman 576-627 fuel tank lock ring seal is a practical and cost-effective solution for replacing a worn or damaged lock ring on compatible fuel tanks. Its compatibility, reliability, and ease of installation make it a strong choice for DIYers and professionals alike. However, potential buyers should be mindful of the risks associated with counterfeit parts, installation errors, and the underlying condition of the fuel tank. By purchasing from a reputable source, carefully following installation instructions, and ensuring the fuel tank is in good condition, the seal can provide a durable and leak-free solution for years.

If you are experiencing a fuel leak or suspect a failing lock ring seal on a vehicle that uses the 576-627 fuel tank assembly (e.g., certain GM vehicles), purchasing the Dorman 576-627 lock ring seal is a reasonable and cost-effective option. Here s how to proceed:

1. **Verify Fitment** Confirm that this part is compatible with your exact vehicle model and year. Check the vehicle s service manual or consult with a parts specialist if unsure.

2. **Purchase from a Trusted Source** Buy the part from an authorized Dorman distributor, a well-known auto parts retailer (such as AutoZone, O Reilly Auto Parts, or RockAuto), or a reputable online marketplace (e.g., Amazon, eBay with seller ratings, or the manufacturer s website). Avoid purchasing from unknown sellers to minimize the risk of counterfeit parts.

3. **Inspect the Fuel Tank** Before installation, inspect the fuel tank for signs of corrosion, dents, or other damage. If the tank is compromised, consider replacing it entirely rather than just the seal.

4. **Follow Installation Instructions Carefully** Use the correct tools (e.g., lock ring pliers or a socket set) and follow the manufacturer s guidelines for installation. Avoid overtightening the lock ring, as this can damage the seal or the tank flange.

5. **Test for Leaks** After installation, monitor the vehicle for any signs of fuel leaks. If a leak persists, recheck the installation or consider professional assistance.

6. **Consider Professional Installation if Needed** If you are unsure about handling the fuel system or the lock ring, consult a mechanic to ensure proper installation and avoid potential safety hazards.

Overall, the Dorman 576-627 lock ring seal is a solid choice for addressing fuel tank seal issues, provided you take precautions to ensure quality and proper installation.

Details:

part #: 576627 prices

• $645.33-$1309.63

specifications fueltanksysteme:

• brand: Dorman
• mpn: 576-627
• part type: Fuel Ring Seal Tank Lock
• manufacturer warranty: 1 Year
• california prop 65 warning: This Product Contains Chemicals Known To The State Of California To Cause Cancer And Birth Defects Or Other Reproductive Harm.
• genuine oem: 3c3z9002ga, 5c3z9002ga, 6c3z9002c, 6c3z9002g, 6c3z
• upc: 885484539594
• item length: 33.5 In
• item width: 33 In

shipping fueltanksysteme:

• class: Economy, Standard, Expedited, One-day
• cost: $0.00
• type: Fixed
• service: Economy, Standard, Expedited, Overnight
• transit: 3-6 Days

seller fueltanksysteme:

• rating: 99.4%
• city: Colmar, Pennsylvania
• # reviews: 129828

returns fueltanksysteme:

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

payments fueltanksysteme:

• credit card: Visa
• other
• wallet: Apple-pay

offer fueltanksysteme:

• sold: 0
• quantity: 2
• availability: In Stock
• started: February 1, 2026
• options: Ship-to-home

general fueltanksysteme:

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

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