From the factory, you can expect your Mercedes-Benz M157 / M278 / M133 engine to produce a high level of boost pressure (27.5psi as tested). This in turn, creates extremely high charged air temperatures prior to entering the stock liquid cooled heat exchanger (intercooler). Although adequate under normal driving conditions, the stock heat exchanger responsible for cooling this boosted air underperforms when your MB is driven aggressively, in warmer climates or when subjected to extended operation.
Whether you are running stock or upgraded components on your Mercedes-Benz turbocharged engine, the Alpha Performance Mercedes-Benz M157 / M278 / M133 Heat Exchanger Upgrade offers much greater efficiency – providing consistently cooler boost temperatures while combating heat soak issues. Beneficial throughout everyday driving, this level of cooling is even more crucial to consistent performance on a road course or dragstrip.
An upgrade to the factory heat exchanger in both overall size and efficiency, ours offers better cooling of the intercooler system fluid. Being 38% larger than stock our heat exchanger core provides additional liquid capacity for greater heat dissipation. This allows the system to maintain lower fluid temperatures throughout extended periods of high throttle operation. To improve flow and reduce pressure drop, our engineering team went a step further by tapering the inlet and outlet for smoother flow. All of this will result in cooler intake air charges and maximum power!
With normal hand tools, the Heat Exchanger Upgrade installs within 1.5 hours. Simply remove the wheel, inner fender liner and the factory heat exchanger. The new unit swaps right in using factory hardware without any cutting or modifications to your car.
Please Note: Replaces factory part number A 099 500 32 03
NOT CARB-APPROVED. ILLEGAL TO USE OR INSTALL IN CALIFORNIA. IF YOU LIVE IN CA, WE CANNOT SHIP YOU THIS ITEM AND YOU WILL BE CHARGED A 10% CANCELLATION FEE IF YOU ORDER. PLEASE LOOK FOR OTHER PRODUCTS WITH CARB APPROVAL.
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
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