$595.00 USD
$595.00 USD












The MMX Performance BMW N54 / N55 Low Temperature Oil Thermostat is a highly effective upgrade designed to improve oil temperature control and maintain optimal engine lubrication under demanding conditions. By regulating oil temperatures within the ideal 90°C to 110°C range, this thermostat helps ensure consistent performance and long-term engine reliability.
As power levels increase or driving becomes more aggressive, oil temperatures can rise beyond optimal limits. Elevated oil temperatures reduce the oil’s ability to properly lubricate critical engine components, increasing wear over time. The MMX low temperature thermostat addresses this issue directly by opening earlier than the factory unit, allowing oil to circulate and cool more efficiently.
This upgrade is particularly beneficial for vehicles that are tuned, driven hard on the street, or used on track. It provides a cost-effective alternative to full oil cooling system upgrades while still delivering meaningful improvements in thermal management.
Each thermostat is precision machined from T6061 aircraft-grade aluminum and finished in MMX’s signature dark anthracite anodized coating. This ensures durability, corrosion resistance, and a clean OEM+ appearance within the engine bay.
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$595.00 USD
$595.00 USD
This product can expose you to chemicals such as lead and lead compounds, which are known to the State of California to cause cancer or birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.
For a complete list of chemicals known to cause harm, visit https://www.p65warnings.ca.gov/chemicals.
Under the federal Clean Air Act (42 U.S.C. §7522(a)(3)), it is illegal to manufacture, sell, install, or use any part that defeats or alters a motor vehicle’s emission control system for use on public roads. Unless a product has received an Executive Order (EO) from the California Air Resources Board (CARB), it is not legal for use or installation on any pollution-controlled vehicle driven on public highways.
Some states have CARB-equivalent or independent emissions laws. Customers are responsible for verifying local regulations before purchasing or installing emissions-related products.
All performance, racing, or competition parts sold by this company are intended solely for off-road, closed-course, or competition use on vehicles that are never registered or used on public highways.
Kies Motorsports, LLC sells and markets these products for lawful use only. We do not condone or authorize the use of emission-control defeat devices or any modification that violates the Clean Air Act or state regulations.