DORMAN 624-304 Lower Auto Trans Oil Cooler Hose 019495060604 924-304

( Brand: Dorman ), ( Manufacturer Part Number: 624-304 ), ( Part Type: Oil Tran Cooler Hose ), ( UPC: 019495060604 )

Review DORMAN Lower Auto Trans Oil Cooler Hose Assembly

The **Dorman 624-304 / 924-304 Lower Automatic Transmission Oil Cooler Hose** is a high-quality, direct-fit replacement part designed to restore optimal performance and reliability to automatic transmission systems in a wide range of vehicles. Engineered to meet or exceed OEM specifications, this hose is crafted from durable, heat-resistant rubber reinforced with high-strength fabric layers, ensuring it can withstand the extreme temperatures, pressure fluctuations, and constant stress inherent in transmission fluid circulation. Ideal for applications in vehicles equipped with transmission oil coolers such as those found in performance-oriented or high-mileage models this hose plays a critical role in maintaining proper fluid flow, preventing overheating, and extending the lifespan of both the transmission and the cooler itself. Its precise fitment ensures a secure connection to the transmission cooler lines, minimizing the risk of leaks or air pockets that could compromise hydraulic efficiency. Whether replacing a worn-out original equipment hose or addressing a failure in an aftermarket cooler setup, this Dorman part offers a dependable solution that balances durability with ease of installation, making it a trusted choice for mechanics and DIY enthusiasts alike.

### Pros and Cons of buying a Dorman 624-304 / 924-304 Lower Auto Trans Oil Cooler Hose

1. **Compatibility** This hose is designed specifically for GM vehicles with the 624 and 924 transmission models, ensuring a proper fit without modifications. It is commonly used in applications like the 6L80, 6L90, and 6L45 transmissions, which are found in trucks and SUVs from the late 1990s through the 2010s.

2. **Quality Construction** Dorman is a well-known brand in the aftermarket automotive parts industry, known for producing durable, high-quality components. The hose is typically made from reinforced rubber with metal or synthetic braided reinforcement, which helps prevent leaks and kinks.

3. **Easy Installation** The hose is designed to be a direct replacement for the OEM part, meaning it should fit without the need for additional tools or modifications. The clamps and fittings are usually compatible with standard tools, making it a straightforward DIY project.

4. **Cost-Effective Solution** Compared to OEM replacement parts, Dorman hoses are often significantly cheaper while maintaining reliability. This makes it an attractive option for budget-conscious buyers who still want a quality part.

5. **Widely Available** Dorman parts are stocked by most auto parts retailers, both online and in-store, ensuring easy access for purchase and replacement.

6. **Compatibility with Aftermarket Upgrades** If you ve modified your transmission or cooling system (e.g., added an external cooler or upgraded fluid cooler lines), this hose can integrate seamlessly with those upgrades.

---

1. **Potential Fitment Issues** While the part is designed for specific applications, there can be variations between different model years or minor trim differences. Always double-check your vehicle s specific transmission model and year to confirm compatibility before purchasing. Some owners report that the hose may not fit perfectly with certain aftermarket coolers or custom setups.

2. **Durability Concerns Over Time** Like any rubber hose, this part can degrade over time due to heat, oil exposure, or environmental factors (e.g., UV rays if installed near the engine bay). While Dorman hoses are generally durable, they may require replacement if they become brittle or cracked.

3. **Quality Variability** While Dorman is a reputable brand, there have been occasional reports of counterfeit or lower-quality parts entering the market, particularly on third-party websites. Purchasing from authorized dealers or trusted retailers can mitigate this risk.

4. **Limited Warranty** Dorman typically offers a limited warranty (often 12 months or 12,000 miles), which may not cover all potential failure modes, especially if the hose is damaged due to improper installation or external factors.

5. **Compatibility with Non-GM Vehicles** This part is **not** designed for non-GM vehicles. Attempting to use it on a Ford, Chrysler, or other brand s transmission could lead to leaks or damage.

6. **Potential for Leaks at Fittings** If the clamps or fittings are not tightened properly during installation, leaks can occur. This requires careful attention during installation to ensure a secure seal.

---

The Dorman 624-304 / 924-304 lower auto trans oil cooler hose is a solid, cost-effective choice for GM vehicles with compatible transmissions. It offers a balance of quality, ease of installation, and affordability, making it a practical option for both DIY enthusiasts and professional mechanics. However, it is essential to verify fitment for your specific vehicle and transmission model, as well as to ensure you are purchasing an authentic part from a trusted source.

If your transmission s oil cooler hose is leaking or worn, this Dorman part is a reliable replacement that can extend the life of your transmission cooling system. For vehicles with extensive modifications or non-GM transmissions, alternative parts may be necessary.

- **Buy it if:** You have a GM vehicle with a 624 or 924 transmission (e.g., 6L80, 6L90, 6L45) and need a direct replacement for the lower oil cooler hose. The part is widely available, easy to install, and offers good durability.

- **Avoid it if:** Your vehicle is not GM, or if you suspect the hose may not fit due to custom modifications. In such cases, consult a transmission specialist or check for alternative parts that match your specific setup.

- **Purchase from:** Authorized Dorman dealers, reputable online retailers (e.g., RockAuto, Amazon, or local auto parts stores), or trusted mechanics to avoid counterfeit parts.

- **Installation Tip:** Replace the hose during routine maintenance or when you notice leaks, and ensure all clamps are tightened properly to prevent future issues. Consider using a transmission fluid leak detector to check for hidden leaks after installation.

Details:

Free Shipping is for continental USA only. These items, although NEW, may contain shelf wear or imperfections due to the age of product. Dorman part number 624-304. Please refer to the products photograph for actual country of origin.

Country of Origin: origin is stated on product packaging. Shipping: Free Shipping is for contingent USA only.

part #: 624304 prices

• $37.99-$56.92

specifications ocoosys:

• brand: Dorman
• mpn: 624-304
• part type: Oil Tran Cooler Hose
• upc: 019495060604

shipping ocoosys:

• transit: 4-8 Days
• service: USPS Priority Mail
• type: Fixed
• class: Expedited
• carrier: USPS
• cost: $0.00

returns ocoosys:

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

payments ocoosys:

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

seller ocoosys:

• # reviews: 271414
• city: Houston, Texas
• rating: 99.7%

general ocoosys:

• condition: New other see details
• Car Truck Parts Accessories > Engine Cooling Components > Other Engine Cooling Components

offer ocoosys:

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

Dorman 624-304 Is Similar To:

• 46059 Dorman Help Fab Auto Parts Product Listing 037495460590 (33.6% similar) ...(April 11th, 2019)
• 46061 Dorman Help Fab Auto Parts Product Listing 037495460613 (33.6% similar) ...(April 11th, 2019)
• 620-135 Dorman Oe Solutions New Ford Focus Engine Cooling Fan Assembly (46.3% similar) focus or for a quick response. If you live outside of the USA please research and verify it fits your vehicle before purchasing. 1 lbs x w H31. If you wish to purchase multiple items please. We combine shipping on the same item...(October 28th, 2018)
• 620-147 Dorman Oe Solutions New Ford Focus Engine Cooling Fan Assembly (46.3% similar) If you wish to purchase multiple items please. 5 lbs x w H33. If you live outside of the USA please research and verify it fits your vehicle before purchasing. We combine shipping on the same item. Or for a quick response...(October 30th, 2018)
• 620-333 Dorman Oe Solutions New Engine Cooling Fan Assembly For Mitsubishi (44.9% similar) We combine shipping on the same item. If you live outside of the USA please research and verify it fits your vehicle before purchasing. If you wish to purchase multiple items please. Or for a quick response. 9 lbs x w H31. L4 gas fie 2000 CC, dual fan ASSEMBLY2002MITSUBISHI lancer...(October 24th, 2018)
• 620-593 Dorman Oe Solutions Engine Cooling Fan Assembly For Toyota Avalon (45.3% similar) If you wish to purchase multiple items please. If you live outside of the USA please research and verify it fits your vehicle before purchasing. Or for a quick response. We combine shipping on the same item...(October 25th, 2018)
• 601-015 Dorman Products Inverter Cooler Water Pump Fits Toyota 037495111065 (33.1% similar) You won't be disappointed. Our team of certified car quest counter pros are Best in the biz...(May 9th, 2020)
• 601-324 Dorman Radiator Shutter Assembly Fits Jeep Cherokee Fast 889245202987 (29.8% similar) This assembly features a factory-style connector for a plug-and-play installation. 1 radiator shutter assembly with motor. New condition...(January 19th, 2022)
• 601-321 Dorman Products Radiator Shutter Assembly Fits Ford Fusion 889245184382 (35% similar) Our team of certified car quest counter pros are Best in the biz. So forget the rest and try Best! new condition...(February 8th, 2022)
• Radiator Shutter Assembly Fits 2015-2017 Chrysler 200 Dorman Oe Solutions (21.9% similar) This assembly features a factory-style connector for a plug-and-play installation. Radiator shutter assembly. 1 radiator shutter assembly with motor. New condition...(June 30th, 2022)
• Radiator Drain Plug Dorman Auto Grade 490-232.1 (28.8% similar) This part is sold as a part number only. Information like which side a part fits left or right and specific vehicle attributes transmission, AWD/RWD, and other vehicle exclusions are included for your information in this left column. New condition...(July 2nd, 2022)