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CSF BMW G-Chassis B58/B48/B46 High-Performance Heat Exchanger
CSF BMW G-Chassis B58/B48/B46 High-Performance Heat Exchanger
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CSF BMW G-Chassis B58/B48/B46 High-Performance Heat Exchanger



CSF BMW G-Chassis B58/B48/B46 High-Performance Heat Exchanger

G-Series High-Performance Heat Exchanger (CSF #8154)

  • Significantly Reduces Intake Air Temperature (IAT) for Maximum Performance (with Faster Heat Soak Recovery)
  • Improves Air Flow to the Rest of the Cooling System for Both Lower Engine Water and Engine Oil Temperatures
  • 2-Row, 42mm Ultra High Performance Core
  • 6.5mm Tall Multi-Louvered Fin with CSF’s Exclusive B-Tube Technology
  • CNC Machined Mounting Brackets and OEM Style “Quick Connect” Inlet/Outlet
  • 100% All Aluminum TIG-Welded Construction
  • Includes Rock Guard & Transmission Oil Cooler Mounting Kit (Industry Exclusive)
  • “Drop-in” Fit
  • 2-Year Limited Warranty
  • 1-Hour “Mirror Finish” Hand Polish
  • Tested and Proven by CSF’s Global Network of R&D Partners, Including Leading Time Attack Teams, Tuners, and Turbo Kit Manufacturers
  • Fits:
    • 2020+ Toyota Supra (A90/A91)
    • & 2018+ BMW Models:
      • G29 Z4 20i, 30i & M40i
      • G20 3-Series (320i, 330i, 330iX, M340i, M340iX)
      • G21 3-Series Touring (330i, 330iX, M340iX)

OEM#: 16400-WAA03 & 17118666811

Fitment Guide

Year Model Sub-Model Chassis Code Engine Code
18-20 320i Sedan G20 B48D
18-20 320i Sedan G20 B46D
18-20 320i 1.6 Sedan G20 B48
18-20 330e Sedan G20 B48X
18-20 330i(X) Sedan G20 B48D
18-20 330i(X) Sedan G20 B46D
18-20 M340i(X) Sedan G20 B58D
18-20 330i(X) Touring G21 B48D
18-20 M340iX Touring G21 B58D
18-20 Z4 20i Roadster G29 B48D
18-20 Z4 20i Roadster G29 B46D
18-20 Z4 30i Roadster G29 B48D
18-20 Z4 30i Roadster G29 B46D
18-20 Z4 M40i Roadster G29 B58C
18-20 Z4 M40i Roadster G29 B58D
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We are typically very quick and have a 24-48 hour turnaround time. Transit time depends on your order and which warehouse we are shipping from, but typical transit times are between 5-7 business days from one side of the US to the other.

Majority of the items we offer do ship free to the lower contiguous 48 states. States that require plane or boat to reach (such as Hawaii, Alaska, Puerto Rico, etc) do NOT qualify for free shipping. Please contact us to inquire about international shipping costs. During checkout, you will know which items ship free and which have shipping costs associated with them. In general, larger/heavier items will have additional shipping costs (body kits, wheels/rims, etc)

Even though everything can be shipped internationally, sometimes the cost is simply just too high and doesn't make sense to do so. We're here to make sure you have a great shopping experience, so if you have a product(s) you want to inquire about, please contact us at

Yes, we do price match reputable competitors in the marketplace. If you find a product cheaper elsewhere, please email us the (1) link of the product from our website and (2) the link to the competitor site. We will make an assessment on our end if we are able to price match or not and respond to you via email.

Typically you have 14 days to return a product you purchase when you change your mind. Damaged and improperly installed products are NOT eligible for returns. Shipping fees may be assessed and not refunded based on criteria as well as restocking fees. Please see our FAQ page for more details.

Unfortunate Kies Motorsports no longer does customer installs (with the exception of crank hubs - we still do thos inhouse). Our HQ is solely reserved for filming, office space, and shipping/receiving.

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