STILLEN 400638 Race Oil Cooler 600700004201

( Brand: Stillen ), ( Part Type: Oil Cooler ), ( Manufacturer Part Number: 400638 ), ( Product Type: Racing Engines Components ), ( UPC: 600700004201 ), ( California Prop 65 Warning: Cancer And Reproductive Harm. ), ( Fitment Type: Semi-universal ), ( Product Subtype: Racing Oil Coolers Components ), ( Product Details: Performance Engine Oil Cooler ), ( Department: Performance )

Review STILLEN Race Oil Cooler

The Stillen 400638 Race Oil Cooler is a high-performance accessory designed to keep engine oil temperatures in check during rigorous racing conditions. This cooler, engineered for enthusiasts seeking optimal engine protection and reliability, is constructed from heavy-duty materials to ensure durability and longevity.

The core of this oil cooler consists of a high-density aluminum radiator, which boasts an impressive cooling capacity. The fin density is meticulously optimized to maximize heat transfer, allowing the cooler to efficiently dissipate heat and maintain a stable oil temperature. The cooler's compact design ensures a perfect fit in most race vehicles, making it an excellent choice for both street and track applications.

The inlet and outlet ports on the Stillen 400638 Race Oil Cooler are CNC machined from billet aluminum, ensuring a precise fit and leak-free operation. The cooler also features an integrated oil filter, which is easily accessible for routine maintenance. This integrated design not only simplifies the installation process but also eliminates the need for an additional external oil filter housing.

To ensure seamless integration with various racing engines, the Stillen 400638 Race Oil Cooler comes with both AN6 and AN10 fittings, allowing for flexibility in hose and connection choices. Additionally, the cooler is compatible with most racing oil pumps, enabling a straightforward installation process.

In summary, the Stillen 400638 Race Oil Cooler is a top-tier cooling solution for race vehicles. Its high-density aluminum radiator, CNC machined ports, integrated oil filter, and versatile fitting options make it an ideal choice for those seeking reliable, efficient, and effective engine oil cooling.

The Stillen 400638 Race Oil Cooler is a popular aftermarket accessory for cars that require additional oil cooling. Here are some potential pros and cons of purchasing this product:

1. Enhanced Engine Protection: The oil cooler helps maintain optimal oil temperature, reducing the risk of engine damage, especially during high-performance driving or extended periods of heavy usage.

2. Improved Engine Efficiency: By keeping the oil temperature within an ideal range, the engine can operate more efficiently, resulting in better fuel economy and improved overall performance.

3. Cooler Operating Temperature: The race oil cooler is designed to provide better cooling than the stock oil cooler, ensuring the engine doesn't overheat, especially in high-performance driving conditions.

4. Customizable: This oil cooler kit comes with various options for size, configuration, and mounting location to cater to different vehicle applications.

5. High-Quality Construction: The Stillen 400638 Race Oil Cooler is made from high-strength materials, such as aluminum and brass, ensuring durability and longevity.

1. Cost: The Stillen 400638 Race Oil Cooler is a premium aftermarket product, and its price may be a deterrent for some buyers.

2. Installation Complexity: Installing an oil cooler can be a complex process, especially for those without experience in automotive repair or modification. It may require professional installation, which could add to the total cost.

3. Potential for Leaks: When installing an oil cooler, there is a risk of leaks, which could lead to costly repairs and potential engine damage. Proper installation and the use of quality seals and gaskets can help minimize this risk.

4. Increased Weight: The oil cooler and its associated hoses and fittings can add weight to the vehicle, which could negatively impact fuel economy and handling.

5. Maintenance: Regular maintenance, such as oil changes and cooler flushes, is essential to ensure the longevity and optimal performance of the oil cooler.

The Stillen 400638 Race Oil Cooler offers multiple benefits for vehicles, including enhanced engine protection, improved efficiency, and better cooling capabilities. However, it also comes with potential drawbacks, such as cost, installation complexity, and ongoing maintenance requirements. Ultimately, the decision to purchase this product depends on the individual's specific needs, budget, and technical abilities.

If you frequently engage in high-performance driving or extended periods of heavy usage and are willing to invest in a premium aftermarket product, the Stillen 400638 Race Oil Cooler could be a valuable addition to your vehicle. However, if you're on a tight budget, have limited experience with automotive modifications, or prefer a more straightforward solution, a stock oil cooler or a less expensive aftermarket alternative may be more suitable for your needs.

part # 400638 prices

• $375.00-$671.91

specifications motochilled:

• brand: Stillen
• part type: Oil Cooler
• manufacturer part number: 400638
• product type: Racing Engines Components
• upc: 600700004201
• california prop 65 warning: Cancer And Reproductive Harm.
• fitment type: Semi-universal
• product subtype: Racing Oil Coolers Components
• product details: Performance Engine Oil Cooler
• department: Performance

offer motochilled:

• availability: In Stock
• options: Ship-to-home
• sold: 0
• started: March 19, 2026
• quantity: 1

seller motochilled:

• # reviews: 8781
• rating: 99.4%

returns motochilled:

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

shipping motochilled:

• carrier: FedEx
• type: Fixed
• class: Standard
• transit: 20-30 Days
• cost: $28.00
• service: FedEx Ground / FedEx Home Delivery

payments motochilled:

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

general motochilled:

• Car Truck Parts Accessories > Engine Cooling Components > Engine Oil Coolers Lines
• condition: New

Stillen 400638 Is Similar To:

• Stillen 409347 Oil Cooler (80% similar) $585.95. (March 5th, 2026)