In addition to the Forge Motorsport PolarCooler range, here we have the top mount replacement chargecooler and expansion tank for the BMW MSport S55 Engine.
The Chargecooler features an all aluminium construction which overcomes all the issues relating to plastic end tank splitting, failure at high boost and leaks between the core and end tanks with end tank seal failure. The end tanks are fabricated using high precision laser cut sheet metal panels which are TIG welded by hand for maximum strength and durability.
Designed and manufactured at Forge Motorsport HQ in Gloucestershire, England, we utilised our Solidworks CAD design system to assist in the creation, modification, CFD (Computational Fluid Dynamics) analysis and optimization of this innovative charge cooler. Three different core constructions were evaluated during the development process. The final design of a bar and plate core far outperformed the other two alternatives. In doing this, the Forge Motorsport development engineers have made a quadruple pass design, allowing the water to flow through four passes of the cooler which improves the cooling efficiency beyond any other products currently on the market.
Unique to the market, the Forge BMW M3/M4 S55 Chargecooler system (that also fits the M2 Competition F22 2018-) uses an expansion tank rather than a header tank like the OEM system. There is a filler cap located at the highest point on the Chargecooler allowing you to be sure that the charge is 100% full of coolant with no air pockets. This maximises the efficiency of the heat rejection of the coolant within the Chargecooler water jacket.
- Offering over 71% increase in volume and over 42% increase of frontal area.
- In hot climate testing, constant dyno runs showed significantly lower inlet temperatures compared with the stock system and an increase in power of up to 20BHP.
- As part of Forge Motorsport’s strict quality control process, each chargecooler unit is carefully inspected and pressure tested to 4BAR before despatch.
- Located on the outlet tank of the chargecooler there is also a 1/8 NPT port ready for water/methanol injection if required.
The existing OEM Chargecooler rubber mounts are used for this expansion tank and Chargecooler, isolating the system from the harsh vibrations of the engine. No trimming or cutting of the vehicle is required and all parts can be returned to standard if necessary.
In the box
1x Chargecooler unit
1x Expansion tank with sight glass
1x Expansion tank cap
1x Small radiator cap
1x Billet radiator cap cover
1x Billet blanking cap
1x 1/8 NPT Grub screw
7x M6x12mm Allen cap bolts
7x 6mm washers
1x M8x20mm Allen cap bolt
1x 8mm washer
1x M8 Nyloc nut
3x 8-16mm Hose clamps
1 x 8mm ID Vacuum hose x 170mm
1x 8mm ID Vacuum hose x 750mm
We have a 14-day return policy, which means you have 14 days after receiving your item to request a return.
To be eligible for a return, your item must be in the same condition that you received it, unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.
To start a return, you can contact us at firstname.lastname@example.org. If your return is accepted, we’ll send you a return shipping label, as well as instructions on how and where to send your package. Items sent back to us without first requesting a return will not be accepted.
You can always contact us for any return question at email@example.com.
Damages and issues
Please inspect your order upon reception and contact us immediately if the item is defective, damaged or if you receive the wrong item, so that we can evaluate the issue and make it right.
Exceptions / non-returnable items
Certain types of items cannot be returned, like perishable goods, custom products (such as special orders or personalised items). We also do not accept returns for hazardous materials, flammable liquids, or gases. Please get in touch if you have questions or concerns about your specific item.
Unfortunately, we cannot accept returns on sale items or gift cards.
The fastest way to ensure you get what you want is to return the item you have, and once the return is accepted, make a separate purchase for the new item. Please note that the customer is responsible for ensuring the correct part is ordered and fits the vehicle it purchased for.
We will notify you once we’ve received and inspected your return, and let you know if the refund was approved or not. If approved, you’ll be automatically refunded on your original payment method. Please note the Exceptions / non-returnable items section, which states there are no returns for perishable goods, custom products (such as special orders or personalised items). We also do not accept returns for hazardous materials, flammable liquids, or gases. Please remember it can take some time for your bank or credit card company to process and post the refund too. Some refunds may incur an admin/restocking fee.