SKU: 33710414589

Mosselman Oil Thermostat BMW S55

$186.53 $207.25
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Ships within 48 hours · Estimated delivery Sep 2 - Sep 7

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Description

Mosselman Oil Thermostat BMW S55Note: The Oil Thermostat Installation kit prevents the thermostat from leaking and is highly recommended when installing the Mosselman Oil Thermostat. The kit includes 2 x O ring for the oil hose and 1x rubber oil filter housing gasket. We highly advise you to add it to your order. The BMW N55 and S55 engines are no strangers to oil cooling problems, thats why we recommend installing the Mosselman Oil Thermostat. Instead of opening at 105C (220F), the

Note: The Oil Thermostat Installation kit prevents the thermostat from leaking and is highly recommended when installing the Mosselman Oil Thermostat. The kit includes 2 x O-ring for the oil hose and 1x rubber oil filter housing gasket. We highly advise you to add it to your order. 

The BMW N55 and S55 engines are no strangers to oil cooling problems, that’s why we recommend installing the Mosselman Oil Thermostat. Instead of opening at 105°C (220°F), the Mosselman Oil Thermostat opens at 85°C (185°F) which results in an operational oil temperature 20°C (68°F) lower than OEM. *Exact temperatures can differ slightly depending on the engine type.

Installing the Mosselman Oil Thermostat ensures a cooler oil temperature which will result in more stable performance, but above all this improves the reliability of the engine. A highly recommended upgrade for the N55, and S55 engines, especially when they’re tuned.

The Thermostat is plug-and-play and made out of a solid block of high-grade aluminum at our own facility. It is equipped with a real thermostat, not an always open solution. The oil will still reach the operating temperature at the same time as a stock thermostat.

Finish the look of your Mosselman Oil Thermostat with the optional Titanium Bolt Installation Set. GR5 Titanium, M8x25.

  • 20°C Lower Than Stock
    Operating temperature 20°C lower than stock.
     
  • Real Thermostat
    Equipped with a real thermostat, not an always open solution. (for use in hot and cold climates)
     
  • Rock Solid Housing
    Made out of a solid block of high-grade aluminum.
     
  • Quick Installation
    Takes only 30 minutes to install.

*please note: Colored thermostat are treated as custom orders because of their low volume and are non-refundable. 

Compatibility Mosselman Oil Thermostat S55 Type Engine
BMW 335i Active Hybrid F30 N55
BMW M2 Competition F87 S55
BMW M3 F8x S55
BMW M3 Competition F80 S55
BMW M3 CS F80 S55
BMW M4 F8x S55
BMW M4 Competition F82 S55
BMW M4 CS F82 S55
BMW M4 GTS F82

S55
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: 33710414589

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4.3 ★★★★★
Based on 28 reviews
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Verified Purchase
Alyssa Romano
Natrona Heights, US
★★★★★ 5
Great set of pillows!!!
Size: Standard (Pack of 2), Style: Soft, Configuration: Pillow
I ordered this set of two down alternative pillows to replace some older pillows, and I’m honestly really impressed with the quality. Right out of the package, the pillows fluffed up nicely and felt soft yet supportive. They have that plush feel you want without being too flat or too firm, which makes them comfortable in multiple sleeping positions. I’ve been sleeping on these for a bit now and they’ve held their shape well throughout the night. They provide good neck support while still feeling cozy, and I don’t wake up with soreness or stiffness. What I like most is how breathable they feel compared to some other pillows I’ve tried. They stay comfortable without overheating, and the down alternative fill makes them a great option for anyone with allergies. Overall, this set is an excellent value for the price. If you’re looking for soft, supportive pillows that feel comfortable and well made, I would definitely recommend these.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 10, 2026
G
Verified Purchase
Gary
Port Orchard, US
★★★★★ 4
Great, soft, high-quality pillows, but too thick for me
Size: Standard (Pack of 2), Style: Soft, Configuration: Pillow
This will be a brief review of my pillow journey. I tried a few of the most popular pillows, like MyPillow, Amazon Basics, bamboo/shredded foam, memory pillows, but my most common complaint about them were that they were all just too high and firm for me. I am a restless sleeper and alternate between back, side, and stomach sleeping, and I strongly preferred the stomach sleeper/flat pillows with a polyester fiber/down alternative filling. Here's a ranking of my 4 top pillows: Eversnug Adjustable Layer Pillows - (#1) These were THE pillow for me. I had never heard of these pillows or the company, but I really like being able to adjust my pillow. These pillows came with 2 small, 2 medium, and 2 large pillows and 2 twin zippable pillow pouches. All of them were polyester fiber filled and somewhat flat and soft, but not lumpy. The pillows may not come the exact same sizes, but they are close enough for me. These are the pillows I ultimately decided to stick with, despite being slightly more expensive than the others at $50 for a set of 2 pillows. Nappler Bamboo Shredded Memory Foam Pillow - (#2) Before I found the Eversnug pillows, I was trying the adjustable bamboo shredded memory foam ones. These were my go-to whenever I was testing pillows I didn't like very much. The only downside to these pillows is that if you don't add enough filling, you could feel the edges of the shredded foam. Also, the "bamboo" cover was way too warm and the inner zipper would get too easily caught. Amazon Basics Down Alternative Pillow - (#3) I don't think I've ever been disappointed by an Amazon Basics product yet. These pillows were soft, amazing pillows, but they were 1-2 inches too thick/firm for me. MyPillow - (#4) Despite all the hype around these, they were too lumpy and 1 inch too thick for me. Like I said previously, I ended up going with the Eversnug Adjustable pillows, which I absolutely adore. A tiny bonus is that you can take the pillows you don't use and rest them on your sides or between your knees for some extra cushioning.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 12, 2023
Y
Verified Purchase
Yi Xuan
Lake Worth, US
★★★★★ 5
Good price and pretty comfortable
Size: Standard (Pack of 2), Style: Soft, Configuration: Pillow
These down alternative pillows are incredibly soft and comfortable, especially for stomach and back sleepers. The soft density gives just the right amount of support without feeling too firm or too flat. I’ve been sleeping much better since switching to these pillows, and they stay fluffy throughout the night. I also love that they’re hypoallergenic, so there’s no irritation or overheating while sleeping. The standard size fits perfectly in my pillowcases, and the white color looks clean and fresh. Getting a 2-pack at this quality is a great value. Highly recommend for anyone looking for cozy, hotel-style pillows at an affordable price!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 11, 2026
M
Verified Purchase
Michelle H
Draper, US
★★★★★ 5
Comfortable Pillows
Size: Standard (Pack of 2), Style: Soft, Configuration: Pillow
These pillows have a nice soft feel and are so comfortable. They’re supportive without being too firm, so my neck feels comfortable throughout the night. They’re lightweight, fluffy, and easy to adjust for different sleeping positions. The material feels smooth and well-made, and the pillows hold their shape better than I expected for the price. They use some alternative fill instead of real feathers which is good for people with allergies.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 30, 2026
C
Verified Purchase
Cassie
Waukegan, US
★★★★★ 3
Mid range quality
Size: Standard (Pack of 2), Style: Soft, Configuration: Pillow
They work for kids who aren’t picky. Size fit twin bedding well. Look nice and clean. Quality is mediocre. It wasn’t filled very much even after giving time for it to breathe and fluff. Kind of lumpy and lopsided.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 28, 2026

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