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Description

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

The Mishimoto radiator E46 is an aluminium performance radiator for the manual BMW E46 323i, 325i, 328i and 330i from 1999 to 2006. It replaces the weak original radiator with plastic end tanks and protects your engine from overheating during spirited driving and hot track days.

According to Mishimoto this radiator lowers coolant temperatures by 10.5 °C compared to stock. Coolant surface area is 18 percent larger, air surface area 41 percent and capacity 20 percent. CNC-machined quick-disconnect fittings connect directly to the stock hoses, and installation takes about an hour.

Key benefits

• Direct fit for the manual E46 323i, 325i, 328i and 330i (1999-2006)
• 10.5 °C lower coolant temperatures according to Mishimoto
• 20 percent more capacity, 18 percent more coolant surface and 41 percent more air surface
• Fully brazed aluminium core with TIG-welded end tanks
• 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 manual transmission

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

Technical specifications

• Manufacturer: Mishimoto
• Part number: MMRAD-E46-323
• 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
• Drain plug thread: M12 x 1.5
• Included: radiator, magnetic drain plug, mounting hardware

Installation and delivery

The radiator fits in the original location and the quick-disconnect fittings connect directly to the stock hoses. Mishimoto rates the installation as medium and allows about an hour. After installation, fill the system with good quality coolant and bleed it carefully. The Mishimoto installation guide is available below. Lead time: 4 to 7 days.

An aluminium radiator that replaces the plastic weak spot of the E46 and keeps your engine 10.5 °C cooler.

Why choose this Mishimoto radiator E46?

The original E46 radiator with plastic end tanks is a well-known source of leaks and overheating. This aluminium radiator lasts much longer, cools measurably better and fits without modifications. With Mishimoto’s lifetime warranty, this is an upgrade you only do once.

Frequently asked questions

Does this radiator fit an automatic E46?

No. This version of the Mishimoto radiator E46 is for manual cars. A separate version is available for automatic cars.

Can I keep using my original hoses?

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

How much cooler does the engine run?

Mishimoto measured a 10.5 °C drop in coolant temperature compared to the stock radiator.

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.