- 71% increase in volume
- 42% increase of frontal area
- Increase in power of up to 20BHP
- Tested to 4BAR before despatch
- Ready for water/methanol injection if required
- Lifetime warranty

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.
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
Shipping Policy
Our Shipping Policy was last updated on 1st January 2025
Interpretation and Definitions
Interpretation
The words of which the initial letter is capitalized have meanings defined under the following conditions. The following definitions shall have the same meaning regardless of whether they appear in singular or in plural.
Definitions
For the purposes of this Disclaimer:
● "Company" (referred to as either "the Company", "We", "Us" or "Our" in this Disclaimer) refers to FAW Motorsport
● "Goods" refers to the items offered for sale on the Service.
● "Orders" means a request by You to purchase Goods from Us.
● "Service" refers to the Website.
● "Website" refers to FAW Motorsport, accessible from WWW.FAWMOTORSPORT.CO.UK
● "You" means the individual accessing the Service, or the company, or other legal entity on behalf of which such individual is accessing or using the Service, as applicable.
Thank you for visiting and shopping at FAW Motorsport. The following terms and conditions constitute our Shipping Policy.
Domestic Shipping Policy
SHIPMENT PROCESSING TIMES
All Orders are processed within 2-3 business days. Orders are not shipped or delivered on weekends or holidays. Special order products will be processed within 2-3 days delivery times will vary and collection may be required for larger items. Collection dates will be confirmed via email or telephone.
If We are experiencing a high volume of orders, shipments may be delayed by a few days. Please allow additional days in transit for delivery. If there will be a significant delay in shipment of Your Order, We will contact You via email or telephone.
SHIPPING RATES UK MAINLAND:
Standard: 3-4 business days £6.99
Express Delivery: 1-3 business days £8.99
Large item: 2-5 business days £15.43
Delivery delays can occasionally occur.
Please contact us for shipment outside of Mainland UK
SPECIAL ORDERS POLICY:
1. No Returns:
o Special orders are custom-made or customized to meet your specific requirements and, therefore, cannot be returned under any circumstances.
2. No Cancellations:
o Once a special order is placed, it enters our production process immediately. As a result, cancellations are not permitted. Please review your order carefully before finalizing the purchase.
3. Non-Refundable:
o Payments for special orders are non-refundable. This includes deposits and any other payments made towards the special order.
4. Customer Responsibility:
o It is the customer's responsibility to ensure all specifications and details are correct at the time of placing the order. Any errors or omissions in the order details cannot be amended once the order has been processed.
5. Acceptance of Terms:
o By placing a special order, you acknowledge and agree to the terms outlined in this policy. This ensures that you are fully aware of the non-returnable and non-cancellable nature of special orders.
Shipment confirmation & Order tracking
You will receive a Shipment Confirmation Email once Your Order has shipped containing your tracking number(s). The tracking number will be active within 24 hours.
Customs, Duties and Taxes
FAW Motorsport is not responsible for any customs and taxes applied to Your Order. All fees imposed during or after shipping are the responsibility of the customer (tariffs, taxes)
Damages
FAW Motorsport is not liable for any products damaged or lost during shipping. If You received Your Order damaged, please contact the shipment carrier to file a claim.
Please save all packaging materials and damaged goods before filing a claim.
Contact Us
If you have any questions about this Shipping Policy, You can contact Us:
● By sending us an email: info@FAWMotorsport.co.uk