SKU: 14085666648

Improved Racing BMW Oil Cooler Thermostat 180F For N20, N54, N55, S55 Engine

Sale price$193.95 Regular price$215.50
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Description

Improved Racing BMW Oil Cooler Thermostat 180F For N20, N54, N55, S55 EnginePrecise Oil Temperature Control for Your BMW Upgrade your BMW N20, N26, N51, N52, N53, N54, N55, and S55 engine's oil temperature control with Improved Racing's high performance oil cooler adapter. Designed to address flaws in the factory's restrictive oil cooler adapter and faulty internal flow control valve, this upgrade ensures precise oil temperature control. Improved Racing's thermostat provides quick engine warmup, prevents overcooling, and

Precise Oil Temperature Control for Your BMW

Upgrade your BMW N20, N26, N51, N52, N53, N54, N55, and S55 engine's oil temperature control with Improved Racing's high-performance oil cooler adapter.

Designed to address flaws in the factory's restrictive oil cooler adapter and faulty internal flow control valve, this upgrade ensures precise oil temperature control.

Improved Racing's thermostat provides quick engine warmup, prevents overcooling, and delivers full oil cooling capacity on demand. Trusted by professional race teams around the globe, Improved Racing's thermostats have proven highly reliable, are backed by a lifetime manufacturers warranty, and are made in the USA.

Option to Use the Factory Oil Cooler and Lines

The optional factory oil line adapter allows you to use the factory oil cooler lines for a simple, plug-and-play installation. For maximum performance, the factory oil cooler and lines may be replaced with an aftermarket cooler and AN lines using the AN adapter fittings (-10AN line size is recommended).


Please note that some applications, such as most BMW SUV's, use a water-to-oil heat exchangers. These applications require plugging the coolant supply and return ports, as well as adding an external air-to-oil cooler and lines (factory or aftermarket). Please note the EBW-100 adapter cannot be used without an oil cooler.

Vehicle Fitment

Designed for a direct fit to any BMW engine equipped with oil filter housing part number 11428683206 or 11428642289 (circled in blue in the diagram below). The application is extremely large and covers most BMW cars and SUV's across all series!

You may view our complete application list, including chassis and engine code, in the EBW-100 Complete Application Reference file found in the documentation section at the bottom of this page.

Compatible with all applications equipped with the following BMW engines:

  • BMW N20 engines
  • BMW N26 engines
  • BMW N51 engines
  • BMW N52 engines
  • BMW N53 engines
  • BMW N54 engines
  • BMW N55 engines
  • BMW S55 engines

Determining Your Application

Some applications require adding an external oil cooler. To determine your specific application, refer to the diagram below.

  1. Direct-fit applications (green circle): If your vehicle is equipped with the oil cooler manifold circled in green, you can replace it with the EBW-100 and sometimes use the optional factory line adapter to retain the factory oil cooler (see additional notes on variants below). You may also replace your oil cooler and/or lines with aftermarket AN lines to improve performance with any of the three variants below.
    1. Variants: There are three variants of the factory thermostat housing:
      1. The first variant has factory lines exiting the bottom of the factory housing, and uses an M8 screw inserted from the bottom. The EBW-100 is a direct bolt on for this application using the factory lines with the optional factory oil line adapter (EBW-100-98).
      2. The second common variant has factory lines exiting the bottom, but uses an M6 screw that is inserted from the top to retain the factory lines. To use the factory lines on this variant, the M6 hole in the center of the factory line flange must be drilled out to clear the provided M8 screw. If using aftermaket lines, the EBW-100 will work without any modifications.
      3. The third common variant has factory lines exiting the top of the factory housing. The EBW-100 cannot be used with factory lines in this case. You must use aftermarket AN lines. Improved Racing is developing a new adapter for this application, which will be available soon.

  2. Applications requiring the addition of an oil cooler (red circle): If your vehicle is equipped with the water-to-oil cool circled in red, you will need to perform these additional modifications:
    1. Cap off the coolant feed and return ports at the source.
    2. Install an OEM BMW air-to-oil cooler and lines, or install an aftermarket air-to-oil cooler and aftermarket AN lines.
      Warning: A cooler must always be equipped. Do not cap off the inlet and outlet ports of the EBW-100. This will result in the complete blockage of oil flow to your engine!

Temperature Rating Specifications

 

Part Number Typ. Stabilization Temp Activation Temp Full Flow Temp
EBW-100-T4 180°F (82.2°C) 180°F (82.2°C) 203ºF (95ºC)


Specifications

Port Size
  • 10AN O-ring boss inlet and outlet ports.
Construction
  • CNC-machined from 6061-T6 aluminum and MilSpec Type II anodized.
Parts Included
  • EBW-100 thermostatic oil cooler adapter
  • Replacement OEM-style rubber gasket
  • Mounting Hardware
Country of Manufacture
  • United States of America
Warranty
  • Lifetime warranty
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 14085666648

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4.3 ★★★★★
Based on 9 reviews
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Product Reviews
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Verified Purchase
Eddie Johnson
Lake Worth, US
★★★★★ 5
Best bicycle tire sealant I’ve used! Top tier!
Size: 8oz MTB Tire Sealant Kit
I’ve used most of the known brands and Tireject rises to the top of the market!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 11, 2024
D
Verified Purchase
don
Waukegan, US
★★★★★ 5
Works well!
Style: 16 oz
This stuff works well. I've only ever used it after my tires had been punctured and ran flat... I haven't had a flat this wouldn't seal... 3 uses so far all 3 have fixed flats and been many miles put on since the repairs. I start with as little as possible and if it doesn't seal I just add more, I think I've managed to use far less than recommended and successfully sealed punctures. I've only used it on fat tire e-bike tires. I'm pretty comfortable with the seal and I have no plans to replace the tubes, which saves me a fair amount of trouble. I will update if it springs any leaks without new punctures. It's very easy to use and actually pretty clean especially compared to automotive type tire repair foams. The first repair I used it for was a brand new bike that just wouldn't hold air in the rear, totally unsure what caused it to keep losing air but 2 or 3 small doses of slime fixed it. The most recent slime repair, I had a wobbly bike ride which felt weird and I couldn't figure out why but a few hours after I had returned home both tires were totally flat. They both had a handful or more of some really heavy duty thorns stuck in the tire that likely barely punctured the tubes but the rear tire also had a roofing nail in it. I did not think the slime was going to fill that one, it was a pretty heavy leak once I removed the nail, but Slime did seal it and I've since ridden the bike twice and in the same rough conditions I normally would still holding strong at higher pressure than I normally ride, have yet to drop back down since refilling but I am hoping and expecting it won't be a problem. Two thumbs up. I always keep a small tube in my bike bag and I am confident if I ever need it while I'm out and about it will be useful.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 17, 2026
A
Verified Purchase
Artie
Waukegan, US
★★★★★ 5
Who can live without slime great stuff and a good price. 👍
Style: 32 oz
If anyone has an outdoor anything that takes air. You should never be caught without this stuff. It seals your tires on almost anything and it lasts longer than you would expect. It’s easy to use and easy to clean up after using it. It will work well for anything that is supposed to hold air. Great product.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 11, 2026
M
Verified Purchase
Mudd
Birmingham, US
★★★★★ 5
Title: Reliable, Easy-to-Use, and Worth Every Penny
Style: 32 oz
I’ve been using Slime tire sealant for my fat tire e-bike, and I can say with confidence that this product delivers exactly what it promises. The application is simple, the results are consistent, and the peace of mind it provides is invaluable. For anyone who rides regularly — whether for commuting, recreation, or deliveries — this is a product that pays for itself many times over. The first thing I appreciate about Slime is how easy it is to install. The bottle is well-designed, the instructions are clear, and the process takes just a few minutes. You simply deflate the tire, remove the valve core, squeeze in the recommended amount, reinstall the valve core, inflate, and spin the wheel to distribute the sealant evenly. No special tools, no mess, and no guesswork — just a straightforward, user-friendly process. Performance-wise, Slime does exactly what it’s supposed to do: seal punctures quickly and effectively. I’ve had nails, thorns, and sharp debris puncture my tires while riding, and in every case where the leak was within the tread area, Slime sealed it instantly. There’s something incredibly reassuring about hearing that faint hiss of air for a second, then watching it stop as the sealant does its job. It’s a real-time reminder that this product is actively protecting you from being stranded. What sets Slime apart from other sealants I’ve tried is its durability. Once applied, it stays active inside the tube for months, ready to respond to new punctures as they happen. It doesn’t dry out quickly, it doesn’t clump up, and it doesn’t cause balance issues with the tires. For someone who rides almost daily, that reliability is a huge plus. Another thing I respect about this product is that it’s non-toxic and environmentally friendly. If a bit of sealant escapes during a repair, I don’t have to worry about it harming the environment. It’s also water-soluble, making cleanup easy if I ever need to replace a tube or tire. That attention to safety and sustainability shows that the company isn’t just making a great product — they’re doing it responsibly. The value for the price is excellent. One bottle goes a long way, and when you factor in the cost of replacing tubes, paying for roadside repairs, or even the inconvenience of being late because of a flat, Slime is an investment in both savings and peace of mind. For delivery riders like me, it’s especially valuable — every flat avoided means another day of work uninterrupted. In short, Slime is one of those rare products that I can recommend without hesitation. It’s easy to use, effective, long-lasting, and backed by a company that clearly understands the needs of cyclists and e-bike riders. It has already saved me from countless headaches, and I plan to keep a bottle on hand at all times. If you ride regularly and haven’t tried it yet, you’re taking an unnecessary risk — this is one of the best preventative tools you can add to your maintenance kit. Verdict: Five stars for performance, ease of use, and overall value. Slime is a must-have for any serious rider who values reliability and wants to keep rolling no matter what’s on the road.
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Reviewed in the United States on August 11, 2025
D
Verified Purchase
Dina Stewart
San Leandro, US
★★★★★ 4
Slime is good, pump is a disaster
Style: 1 gal, Style: 1 gal
The only reason I am giving this a 4 star(not zero) rating is the slime itself. The actual pump on the 1 gallon canister is awful. It makes so much mess, so I do not know whether I pumped the slime into the tubes or it all just spilled out of the base of the pump. The bottles worked great, but this time I needed to use more slime for a bunch of tires. What a slimy mess that was. Very poor pump design. Only after I spilled who knows how much of the slime, I finally washed it and was able to see the problem. The cap at the base of the pump got unscrewed and let all the slime lose. I screwed it back up and this should fix the mess next time I use it. Just a heads if someone encounters the same issue.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 22, 2026

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