BMW 430i Heat Exchanger - Dinan - High Performance - '17-'20. A bolt-on upgrade for F32/F33/F36 430i models that boosts cooling capacity for spirited driving and track use.

Dinan replaces the thin factory core with a 48mm unit (vs. 27mm OEM) and unique L-shaped end tanks, increasing thermal mass and delivering 78% more heat-transfer surface area. The gains help curb heat soak and stabilize IATs under repeated WOT pulls. In testing, average intake temps dropped 8°F with peaks up to 15°F over 15 successive runs. Installation hardware is included, with xDrive-specific transmission oil cooler brackets. Minor trimming of the plastic core-stack shroud may be required, especially on vehicles with the optional OEM hot-climate exchanger; see the installation guide.

Features

• 48mm Dinan core vs. 27mm stock
• 78% more cooling surface area and volume
• 100% TIG welded and pressure tested
• Reduces tendency to heat soak/limp mode
• L-shaped end tanks increase thermal mass
• Avg. 8°F, max 15°F IAT reduction in testing
• Includes install hardware; xDrive brackets included
• Fits 2017-2020 BMW 430i (F32/F33/F36)

Have questions or want help planning your build? Call our Austin, Texas shop at 512-982-9393 or our Los Angeles, California area shop at 562-981-6800. We offer professional installation and customization services at both locations.

Purchasing multiple items? Contact us for shipping discounts. We install on premises at both locations.

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