ER Sports Series Oil Cooler (N54/N55)

Enhance the performance and durability of your N54 or N55 engine with the ER Sports Series Oil Cooler. Designed to address the high oil temperatures produced by these engines, our oil cooler effectively reduces oil breakdown, leading to improved longevity for your vehicle. With its large 9"x8"x2" (11"x8"x2" with end tanks) dimensions, our oil cooler offers over 350% more capacity than the factory stock oil cooler, providing superior cooling capabilities.

Crafted with quality and reliability in mind, our oil cooler features a robust construction and is available in two finishes: a sleek silver finish or Type III Hard Black Anodizing for a stealthy appearance. The hard anodizing not only enhances the durability of the intercooler fins but also protects them against damage from road debris such as rocks.

The ER Sports Oil Cooler comes equipped with steel braided lines, ensuring secure and efficient oil flow. Additionally, we offer the option of Carbon Fiber or Aluminum Shrouding, which effectively directs airflow through the oil coolers, further enhancing their cooling efficiency.

Installation is a breeze with our comprehensive kit, as it includes all the necessary hardware for a seamless installation process. Say goodbye to the hassle of searching for additional components!

Rest assured, our ER Sports Series Oil Cooler has been rigorously tested and developed under harsh racing conditions on our 135i Race Car, ensuring its performance and reliability in demanding environments. We are confident in the quality of our product, which is why we offer a limited lifetime warranty.

Compatible with the 1 series (including 1M) and 3 series featuring the N54 engine, our oil cooler is a perfect upgrade for enthusiasts seeking improved engine performance and longevity. Don't compromise on quality and protect your engine with the ER Sports Series Oil Cooler. Place your order now and experience the difference it can make for your car!

Sport Oil Cooler in Type III Hard Anodize Black Finish

• Reduces the high oil temperatures that the N54 and N55 engine produces which helps reduce oil breakdown, improving the longevity of your car!
• Large 9"x8"x2" (11"x8"x2" with end tanks) Oil Coolers.  Factory stock oil cooler 8.75"x4.75"x1"
• Over  larger capacity than the factory oil cooler!!!350%
• Sports Oil Cooler has a total of 144 cubic inches of core!  Factory oil cooler has 41 cubic inches.
• Available with no finish (silver) or Type III Hard Black Anodizing (for stealth). Hard anodizing helps improve durability of intercooler fins against damage from road debris (rocks).
• Enclosed box with venting louvers - protects oil coolers from road debris without sacrificing airflow!
• High Quality Goodrich AN Fittings in Black Anodize - NO China made fittings used here.
• Steel braided lines
• Optional Carbon Fiber or Aluminum Shrouding to direct airflow through the oil coolers for improved efficiency.
• Includes all hardware needed to install.  No need to go hunting for hardware to finish the installation.
• Developed under the harsh racing conditions on our 135i Race Car.
• Limited Lifetime Warranty.

 This product is compatible with the 1 series (1M included), and 3 series with N54 engine.

Shown with Optional Aluminum Shroud Kit

Shown with Optional Aluminum Shroud Kit

It's well known that the N54 and N55 engines runs very hot.  Turbos that build a lot of heat and a small radiator play into why this engine runs so hot.  A quick look at your gauge cluster on your dash after a few minutes of "spirited" driving, you'll notice oil temperatures over 250 degrees.  Considering that most cars don't even exceed 230 degrees tells you quite a bit.  As oil temperatures get too high, thermal degradation occurs.  This is when the oil starts to lose viscosity due to heat and start to break down and becomes more susceptible to "shearing" or oil breakdown. An internal combustion engine like the N54/N55 engine, imparts high shear forces on the motor oil, which is sandwiched between two rotating or sliding forces under load and heat.  "Shearing" is when the molecular structure is essentially torn apart by these mechanical shear forces.  Lower your operating oil temperature will greatly reduce this.  Thus your motor oil is in better shape to protect the bearings in your car's engine, thus improving longevity.

The 135i/335i comes from the factory with a small oil cooler with a core size of 8.75"x4.75"x1" (222mmx121mmx26mm) which comes out to 41 cubic inches of core.  The Sports Series Oil Cooler system features a large 11"x8"x2" (280mmx203mmx51mm) oil cooler with a core size of 9"x8"x2" (229mmx203mmx51mm).  The Sports Series Oil Cooler comes out to 144 cubic inches  of core which is 3.5 times larger than the factory unit each! 

The Sports Series Oil Cooler mounts to its own box enclosure.  Louvers on the backside of the box enclosure ensures airflow through the oil cooler while protecting the oil cooler from road debris, especially debris kicked up from the front tires.  During initial testing, our box enclosure had a big window (open hole) in the back for airflow.  However, throughout the race season, it took so much abuse from rocks, tire and other debris kicked up from the front tires that we had to replace the oil coolers on our Time Attack 135i.  Thus, instead of a big hole for airflow to flow through, we used louvers instead to protect the back side of the oil cooler.  This effectively solved the issue without any affect on performance.  Oil temperatures as well as oil temperature deltas stayed the same. 

Louvered Box Enclosure (Front View)

Louvered Box Enclosure (Back View)

Everything needed to install is included with the kits.  No low quality, cheap fittings and lines made overseas used here.  High quality Goodrich anodized black AN fittings and steel braided lines are used throughout the kit.  

Oil Filter Housing Adapter for AN Lines

Type III Hard Anodize Black Finish:

The oil coolers come standard with no finish (silver color).  Just like our intercoolers, we're now offering them with the Type III Hard Anodize Black for guys who want the stealthy look.  With the Type III Hard Anodized finish, it is very hard to tell there is an aftermarket oil cooler on the car. Another added benefit of the Type III Hard Anodizing is that it makes the oil cooler fins harder and stronger, which makes it less prone to getting bent/damaged from road debris like rocks etc... We opted for the Type III Hard Anodizing over the Type II color anodizing which is only asthetics for this purpose only (even though it cost us considerably more to anodize Type III than Type II). We started using the Type III Hard Anodized Black finish on our rally car customer's FMICs years ago.  Rally cars go through tremendous amounts of abuse and it was quite common to take hits on the intercooler from debris on the course.  In fact after 1 event, we would often see a large portion of the intercooler fins bent (killing efficiency) and fixing them after each event was quite tedious.  After the Type III Hard Anodizing, we notice a big difference as there was considerably less damage.  Even after hits and even accidents, the FMIC could take more abuse than before.  Testing has shown no noticeable ill-effect from the Type III Hard Anodizing on performance (regular spray paint etc... has shown ill-effects on performance).  Eventually, we started utilizing the same Type III Hard Anodize Black on our street cars and FMIC applications.  It's only natural we would offer the same finish for our oil coolers.

Kit Options:

Genuine BMW Parts for late model oil filter housing conversion.