BMR B58 Billet Coolant Reservoir

You asked, we delivered. Here is our latest innovative release for the B58 / S58 platform!

Lead time is currently 5 days to ship.

The Black Market Race B58 Coolant Reservoir solves multiple problems with the OEM system, including preventing coolant from overflowing onto the front tire causing loss of control. This issue was first brought to our attention by the drivers and builders of the fastest BMW's in the world. We knew we had a solution!

Each reservoir includes a 2 Bar radiator cap, with an overflow line. Optionally kits can include an overflow tank to be located in the trunk. 

Our B58 Coolant reservoirs also include an 1/8th NPT pressure reference port which can be used in combination with most tuning software's to integrate coolant pressure based safeties (Eg head starts to lift, coolant pressure spikes, safety triggers limp mode) 

Our reservoirs are cut out of solid chunks of 6061 aluminum and assembled together with high temp chemical and steam resistant O rings, we pressure test each reservoir to 150psi to guarantee ZERO leaks. 

These reservoirs are 100% Plug and play with OEM coolant lines on the B58 TU (2020+)

What's included:

• X1 Billet Aluminum Coolant Reservoir
• X1 Coolant Level Sensor
• Coolant Level sensor pigtail
• Mounting Brackets
• OEM Coolant Hose adaptor
• 10ft of 1/4 Push connect hose
• Push connect fittings for overflow routing
• Optional Motiv Pressure sensor
• Optional Coolant Overflow Tank with breather filter and fasteners
• Overflow Tank Drain Valve

FITMENT

(G Chassis)

• G42 M240
• G20 M340
• G22 M440
• A90 / A91 Supra

Replacement for BMW 17138610652

The items installed or applied to vehicles are intended strictly for off-road use only and track vehicles. These modifications may not comply with emissions, safety, or environmental regulations required for public road use under Environmental Regulatory Agency (ERA) laws. It is the sole responsibility of the vehicle owner or operator to ensure adherence to all applicable local, state, and federal regulations. Use on public roads may result in legal penalties or vehicle impoundment. Always verify compliance with local authorities before installation.

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.

If you're unsure whether a part will fit your vehicle, feel free to contact us here with your inquiry. Our helpful sales team will reach out to confirm if it's the right match for you.

We offer a flat-rate shipping fee across the continental United States. This excludes Alaska, Hawaii, and U.S. territories. For international orders, additional shipping costs will apply. Please contact us for a quote if you are outside the continental U.S.

Also, feel free to also contact us at ColoradoN5X@Gmail.Com for any other questions.

Not all items are covered by warranty. Items including warranty, will clearly state that there is warranty within the product description. Most of these items will be a standard 1-year warranty against manufacture defects. You, the customer, will be responsible for shipping and handling. We will fix/replace that item with a product that is in working condition if you meet the warranty criteria. Please note that you will be allowed ONLY 1 claim within the year for that product. ColoradoN5X is not responsible for any damage caused during the installation of our products.