Focus RS MK3 Pro-Alloy Intercooler

Intercooler colour :
Pro Logo :

Even though we were one of the lucky few to get our hands on one of the first RS MK3's in the country, we decided to take our time with our new line of products and make them right. When fitting upgraded parts to a car hot off the production line, you'll be after the very best in quality, which is why (as always) we've designed our parts to fit to the same precision as the OEM part.  No chopping or grinding to your brand new car, a straight bolt on fitment, with comprehensive step by step fitting instructions included to make the job simple for the less experienced enthusiasts. 

The new all aluminium Intercooler features a large air scoop surrounding the core face to grab all the incoming air from the RS's front bumper, ramming it through the light weight tube and fin core. The end tanks are designed for maximum flow and strength, and are shaped to guide the air through the core with as little resistance as possible. Each end tank is individually hand crafted by our team of craftsmen, with precision TIG welding on the inside and outside of the tanks, helping to improve charge air flow through the internal surfaces, as well as making them ultra strong - a massive improvement over the weak, OE crimped on, plastic part.

Dimension differences

The overall size of the unit has grown drastically, the stats below show how much more core we've managed to slip in behind the front bumper.

Standard Intercooler vs. Pro Alloy Intercooler key details:


Standard Intercooler Core Details:

  • 1 off Intercooler @ 615 x 195mm

  • Single Row Core

  • 11 Live Tubes

  • External Tube size                = 80mm x 10mm

  • Internal Tube Size                = 79.6mm x 9.6mm


    Pro Alloy Intercooler Core Details:

  • 1 off Intercooler @ 680 x 220mm

  • Twin Row Core

  • 28 Live Tubes

  • External Tube size                = 50mm x 8mm

  • Internal Tube Size                = 49.2mm x 7.2mm


    Calculated External Surface Area & Internal Flow Comparison:

  • 24.9% Increase in external core surface area when the Pro Alloy Intercooler is compared to the standard Intercooler.


  • 23.8% Increase in internal flow area when the Pro Alloy Intercooler is compared to the standard Intercooler.

Results from testing

Over the last few months we've been gathering data to see how our new creation stacks up against the OEM unit. Controlled test on the Dyno as well on the road data logging. With a larger more efficient core and efficient end tank design the results are impressive. In parallel with our own testing we have also supplied a prototype kit to a well known Focus tuning specialist, to enable them to carry out some independent and impartial testing, comparing our new kit to some of the other well known brands. The graph below shows how the new kit stacks up against the competition. 

The above graph shows a 30% improvement in cooling efficiency when Pro Alloy kit is compared to the OEM intercooler and a 10% improvement when compared to the closest of the other aftermarket intercoolers tested.

The 'fit and forget' bolt on type of fitting also makes the installation easily reversible if the time comes you want to return back to standard. All our intercoolers are pressure tested underwater to insure they can handle the required boost pressures they up against once installed.  As with all our products, this is covered by our warranty policy to back up our confidence in our products. Again, as with all our products it is available with a choice of finishes - satin black or satin silver, with or without the PRO logo.

Parts coming soon

If you've seen any of to our social media pages lately you'll see our new aluminium header tank is well on its way with our boost pipe kit following along closely behind. Keep an eye out for updates on these soon.


Our policy lasts 14 days from the date of delivery. If 14 days have gone by since your purchase, unfortunately we can’t offer you a refund or exchange.

To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging and suitable for resale. Return postages costs are at the expense of the buyer and we recommend using a tracked and insured service.

All returns will be subject to a 10% restocking fee, outbound postage fees will also be deducted from the refunded amount. The handling fee is to cover costs incurred through processing credit card payments and postage and packaging costs.

Several types of goods are exempt from being returned.

Once a special, non-stock item has been processed we are unable to offer a refund.

To complete your return, please contact us as soon as possible.

Any items that return to us damaged or not 'as new' condition may be subject to a partial refund.


Refunds (if applicable)

Once your return is received and inspected, we will send you an email to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund.
If you are approved, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within a certain amount of days.

Sale and group buy items (if applicable)
Only regular priced items may be refunded, unfortunately sale and group buy items cannot be refunded.

Damaged or defective goods
If goods arrive damaged or incomplete Wayside Performance must be notified within 24hours of delivery.

If we have wrongly supplied parts we will at first try to supply the correct parts to you. If the correct products are not available we will reimburse the full purchase price if within 14 days. Wayside Performance is not responsible for any labour charges incurred during the fitment, or removal of suspected incorrect ordered or supplied parts.

Generally warranties are with the product manufacturer and not with Wayside Performance, therefore the product manufacturer should be the first point of contact. If you are unable to get in touch with the manufacturer please feel free to contact us and we will do all we can to assist.

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