CSF Universal Dual-Pass internal/external Oil Cooler - 22.0in L x 5.0in H x 2.25in W

The CSF Universal Dual-Pass internal/external Oil Cooler represents a significant advancement in high-performance oil cooling technology. Since its introduction in 2016 under the nickname "BOSS" Cooler, this product has established itself as a reliable and versatile solution favored by industry professionals and race teams alike. Unlike CSF’s typical focus on direct fit applications, this universal-style oil cooler is engineered to offer exceptional adaptability, allowing installation both internally and externally on virtually any vehicle.

Measuring 22.0 inches in length, 5.0 inches in height, and 2.25 inches in width, this oil cooler combines a compact footprint with robust construction. Its heavy-duty bar and plate design ensures maximum durability, particularly when mounted externally where exposure to environmental elements and debris is common. The cooler’s finish features a unique thermal rejection powder coating with a semi-gloss/matte black appearance, enhancing both its aesthetic appeal and thermal performance. The design is complemented by a throw-back logo that pays homage to classic styling, merging tradition with modern engineering.

At the core of the CSF Universal Oil Cooler is a dual-pass, turbulated 8-row core with a high-density multi-louvered fin pitch. This configuration optimizes heat dissipation, providing superior cooling efficiency under demanding conditions. The dual-pass design ensures that oil flows through the cooler twice, maximizing contact with the cooling surfaces and significantly reducing oil temperatures. This is critical for maintaining optimal engine performance and longevity, especially in high-stress environments such as racing or heavy-duty applications.

The cooler’s universal design also offers practical advantages in terms of installation flexibility. The inlet and outlet ports are -10 AN male connections, positioned to allow easy routing of oil lines. Unlike conventional plate-type or stacked oil coolers, which often require complex line routing due to port placement, the CSF cooler’s flip-able design permits inlet and outlet connections on either side. This flexibility facilitates installation in tight or unconventional spaces within the vehicle, such as front fascia, differential cooler areas, or side vents, without compromising airflow or accessibility.

One of the key benefits of this oil cooler is its ability to fit in locations with limited vertical surface area. The longer rectangular shape helps avoid stacking multiple coolers, which can restrict airflow and negatively impact the overall cooling system’s efficiency. Additionally, the robust construction and design allow the cooler to withstand high peak burst pressures and significant vibration, making it suitable for use in environments subject to heavy debris or mechanical stress.

Features

• Heavy duty bar/plate construction for durability & strength, ideal for external placement
• Dual-pass design for enhanced cooling efficiency
• Turbulated 8-row core with high density multi-louvered fin pitch for superior heat dissipation
• -10 AN Male inlet/outlet connections for flexible oil line routing
• Flip-able universal design allowing inlet/outlet on either side
• 2 M8 mounting bosses with steel helicoil inserts for secure installation
• Unique semi-gloss/matte black powder coat finish utilizing thermal rejecting powder
• Compact dimensions: 22.0 inches length x 5.0 inches height x 2.25 inches width

Applications

OEM Part Numbers

• *Universal

Warranty

Cooling Systems and Flexibles, Inc. (CSF) guarantees the quality and performance of its High-Performance Cooling Systems under normal use and service to the original purchaser of the vehicle in which the product was initially installed. This warranty reflects CSF’s commitment to reliability and customer satisfaction. For comprehensive warranty details, please visit our Warranty Page.

SKU# 8066 Warranty Term: 2 years

In summary, the CSF Universal Dual-Pass Oil Cooler is engineered to meet the rigorous demands of high-performance and restoration applications. Its innovative design, durable construction, and flexible installation options make it an ideal choice for professionals and enthusiasts seeking a dependable cooling solution. By maintaining optimal oil temperatures, this cooler helps preserve engine integrity, improve performance, and extend component life, thereby aligning with the highest standards of automotive engineering and business reliability.

Unless explicitly stated otherwise, all products sold by R44 Performance Limited are designated RACE ONLY and are solely for competition or off-road use limited to racing formally sanctioned by a recognized racing organization. Any other use, including recreational off-road use, may violate local, state, and Federal laws. R44 Performance Limited does not implicitly or explicitly confirm the legality of using any products it sells on public roads; that is entirely the responsibility of the consumer.

It is the responsibility of the customer to check with all federal, state local and environmental laws before ordering and installing a product. R44 Performance Limited is not responsible for any fees, fines or costs that a customer may incur as a result of failing to check with federal, state, local or environmental laws before ordering and installing a product.

We get a large number of custom orders and requests everyday, so as a result it is not always possible for us to keep every item in stock at all times in our warehouse. If you require the item urgently please contact our sales team here to check the stock before you make your purchase.

We totally understand if you're not certain a part will be compatible with your car, so we highly recommend contacting us here with your query. Our friendly sales team will then be in touch to confirm if this part is the correct part you are looking for.

All in stock products ship the same day if ordered before 2pm GMT

For out of stock items we will contact you with an estimated wait time if not otherwise specified above.

We offer worldwide shipping on all products. If upon receiving your product you wish to return; we offer a 30-day returns policy. For our in-depth returns information please follow the link. "R44 Returns Policy

All of our products come with a standard warranty of 1-3 years. This is dependant on the type of product however. For more details please see our warranty page here.