M240i 2016-2021

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Brand: DinanSKU / Part #: D780-0002

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Dinan High Performance Heat Exchanger for BMW 330i / 340i / 430i / 440i / 230i / M240i 2016-2021

Subtotal: $562.95

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Overview

Dinan High Performance Heat Exchanger for BMW 330i / 340i / 430i / 440i / 230i / M240i 2016-2021

Instructions - d780-0002.pdf

Note: Due to the enlarged core and unique "L" shaped endtanks minor modification to the plastic core stack shroud may be required with some factory configurations ( particularly those with the optional OEM hot climate heat exchanger). Consult the installation PDF for full documentation on what exactly that entails.

Overcome the limitations of the factory cooling system with the Dinan Performance Heat Exchanger for the F2x/F3x chassis, engineered for modified B4x/B58 engines. This essential upgrade combats heat soak during intense driving, preventing the power-robbing temperature spikes and ECU limp modes that plague the stock unit. With a massive 48mm core offering 78% more cooling surface area, it delivers significantly lower intake air temperatures—keeping your engine performing at its peak, pull after pull.

Key Benefits:

Sustains Peak Performance: Drastically reduces intake air temperatures (IATs) to prevent ECU timing pulls and power loss during aggressive or track use.
Robust Cooling Capacity: Features a 48mm thick core—significantly larger than the 27mm stock unit—for superior heat dissipation and thermal mass.
Prevents Heat Soak & Limp Mode: Maintains stable cooling under repeated hard acceleration, extending your vehicle's performance envelope.
Direct, Complete Fitment: Includes all necessary hardware for installation, with specific brackets for xDrive models to ensure proper transmission cooler clearance.

Detailed Features & Specifications:

Core Design: 48mm thick high-efficiency core vs. 27mm stock, with unique "L" shaped end tanks.
Cooling Improvement: Provides 78% more heat transfer surface area and volume than the factory exchanger.
Performance Result: Achieves an average reduction of 8°F in IATs, with up to 15°F reduction observed over successive WOT pulls.
Construction: Fully TIG-welded and pressure-tested for reliability and leak-free operation.
Compatibility: Designed for F2x/F3x chassis vehicles with B4x/B58 engines. Includes installation hardware and xDrive-specific transmission oil cooler brackets

Emissions:

This part is legal under the provisions of EPA’s Tampering Policy dated November 23rd, 2020. The company has reasonable basis (test results) to verify that this product allows the vehicle to operate within legal emissions standards and is therefore legal to be sold for on-street use in all states that accept the legal provisions of the Clean Air Act and the EPA Tampering Policy. This product is NOT LEGAL FOR SALE OR USE IN THE STATE OF CALIFORNIA. Testing with the California Air Resources Board, in order to achieve 50-state compliance, is pending with CARB. Once testing is complete with California, and an E.O. number is issued, this product will be updated to 50-state legal status.

Fitment Chart:

Make	Model	Year
BMW	330i	2017-2018
BMW	340i	2016-2018
BMW	430i	2017-2020
BMW	440i	2017-2020
BMW	230i	2017-2021
BMW	M240i	2017-2021

Fitment

Shipping & returns

Shipping: Orders ship via UPS, FedEx or USPS, from our facility near Los Angeles or directly from the manufacturer. Rates for many items are weight-based and shown at checkout. If you need it by a certain date, text us before you order.

Returns: Unused items in brand-new condition and original packaging can be returned within 30 days of the invoice date, with a 25% restocking fee unless otherwise specified. In some cases we can offer a lower fee with the balance as store credit. Shipping charges aren't refundable in either direction unless approved by AutoTalent.

Not returnable: special-order or custom items, and anything that has been installed, modified or altered.

Cancellations: free if the item is out of stock or we miss the ETA you agreed to. Other cancellations carry a 5% processing fee to cover card fees we can't recover. Special-order items can't be cancelled.

Damaged in transit? Report it to the carrier and to us within 48 hours, keep all packaging, and don't send anything back without our written approval.

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