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Description

BMW E46 non-M (99-06) Mishimoto aluminium radiator automatic

The Mishimoto radiator E46 automatic is the version of the Mishimoto aluminium radiator for the BMW E46 323i, 325i, 328i and 330i with automatic transmission, model years 1999 to 2006. It has an auxiliary port for the stock transmission cooler, so the gearbox stays cooled as before.

Like the manual version, according to Mishimoto it lowers coolant temperatures by 10.5 °C. The full aluminium two-row core has 20 percent more capacity, 18 percent more coolant surface and 41 percent more air surface than the original plastic radiator.

Key benefits

• Made for automatic cars, with a port for the stock transmission cooler
• 10.5 °C lower coolant temperatures according to Mishimoto
• 20 percent more coolant than the stock radiator
• Brazed aluminium core with TIG-welded end tanks instead of plastic
• CNC-machined quick-disconnect fittings for the stock and Mishimoto silicone hoses
• Fits the stock electric fan and the Mishimoto E46 fan shroud
• Installs in about an hour
• Mishimoto Lifetime Warranty

Suitable for

BMW E46 non-M with automatic transmission

• Model years 1999 to 2006
• 323i, 325i, 328i and 330i
• Automatic only; Mishimoto offers a separate version for manual cars
• Not for the E46 M3

Technical specifications

• Manufacturer: Mishimoto
• Part number: MMRAD-E46-323A
• Material: brazed aluminium core, TIG-welded end tanks
• Rows: 2
• Core thickness: 38 mm
• Core size: 581 x 451 mm
• Overall size: 705 x 473 x 95 mm
• Inlet: 38 mm, outlet: 33 mm
• Auxiliary port for the stock transmission cooler
• Drain plug thread: M12 x 1.5
• Included: radiator, magnetic drain plug, mounting hardware

Installation and delivery

The radiator fits in the original location. Connect the transmission cooler lines to the auxiliary port and the coolant hoses to the quick-disconnect fittings. Mishimoto rates the installation as medium and allows about an hour. After installation, also check the transmission fluid level and bleed the cooling system carefully. The installation guide is available below. Lead time: 4 to 7 days.

A cool E46 even with an automatic: an aluminium radiator with the transmission cooler port already on board.

Why choose this Mishimoto radiator E46 automatic?

On an automatic E46, the radiator also helps cool the transmission fluid. This version keeps that function, but replaces the vulnerable plastic end tanks with aluminium and cools measurably better. That way you protect engine and gearbox at the same time, with Mishimoto’s lifetime warranty.

Frequently asked questions

What is the difference with the manual version?

The Mishimoto radiator E46 automatic has an auxiliary port for the stock transmission cooler. Core and dimensions are otherwise the same.

Does it fit my E46 M3?

No. This radiator is for the non-M 323i, 325i, 328i and 330i.

Can I use my original hoses?

Yes. The quick-disconnect fittings fit the stock hoses and the Mishimoto silicone hoses for the E46 non-M.

What is the lead time?

The lead time is 4 to 7 days.

Downloads and documentation

Installation guide Mishimoto radiator (PDF, English)

Delivery outside the European Union: different shipping costs may apply. Don’t worry: we will email you as soon as possible after your order and agree the shipping with you. You are not committed to anything without your consent.