• BMW M3/M4 Chargecooler
  • BMW M3/M4 Chargecooler

BMW M3/M4 Chargecooler

£1,481.87
£1,753.30
£1,481.87
Shipping calculated at checkout.

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 

Click here to find out about information and care for your
Forge Motorsport cooling product.

What are the delivery methods and charges for UK, Europe and Rest of World (ROW)?


Regal Autosport uses a variety of shipping services to give the best combination of value, service and speed to our customers. This will vary on location, value of the time and size to name a few.


Regal Autosport may drop-ship directly from the manufacturer to the customer if the product is a non-stock item and this provides the best value and service. If this is the case, the delivery method may be different.


Shipping is calculated automatically at the checkout, depending on your location and the products ordered. On occasion, the shipping price may be incorrect due to your location or the product being oversized in dimension or weight. Whilst we try to be as accurate as possible with our shipping prices, from time to time they might be inaccurate. We will not know until we process your order if this is the case, we will contact you if this is the case and provide you with the option of cancelling or payment of the difference.


Due to the value of the products sold we only deliver to the verified address of any payment method OR any address if paid for by bank transfer. Thanks to scammers, we simply do not take the risk and any order which does not have a verified address will be cancelled.


Any customer with an order which has been damaged in transit must notify Regal Autosport immediately and within 14 calendar days of shipping. If this is not done, the shipping insurance cannot be used, and you will not be compensated. 


United Kingdom Mainland


Within the United Kingdom Mainland, we use DPD Local. This service is a next working day service. For orders which are in-stock and make the 2PM same-day shipping cut-off, they will be delivered the following working day. A working day is Monday - Friday only.


Tracking is automatically sent to your email address or mobile address or both once the order has been processed for shipping. You will then typically receive a 1-hour delivery window on the day.


United Kingdom Non-Mainland 

Within the United Kingdom Non-Mainland, we use DPD Local. This service is a next working day or 2 working day service. For orders which are in-stock and make the 2PM same-day shipping cut-off, they will be delivered the following working day or the second working day. A working day is Monday - Friday only. 


Europe 

For Europe, we use DHL. Your delivery location will determine the transit time. Orders in-stock and placed before 2PM will ship the same working day. A working day is Monday - Friday only. 


Tracking is automatically sent to your email address or mobile address or both once the order has been processed for shipping. You will then be able to track your order and see an estimated delivery date. 


Tracking is automatically sent to your email address or mobile address or both once the order has been processed for shipping. You will then typically receive a 1-hour delivery window on the day. 


Rest of World (ROW) & Oversize 


For ROW and oversize items, we typically use DHL Express. Your delivery location will determine the transit time. Orders in-stock and placed before 2 PM will ship the same working day. A working day is Monday - Friday only. 


Tracking is manually sent to your email address once your order has been processed for shipping. You will then be able to track your order and see an estimated delivery date. 


Please note: The above is a general guide to how we plan to ship your order. From time to time this may change and we may decide to ship with other couriers.