Mishimoto Performance Aluminium Radiator BMW E46 323i 325i 328i 330i Manual 1999-2006 – MMRAD-E46-323

Upgrade the cooling system of your BMW E46 Non-M with the Mishimoto Performance Aluminium Radiator MMRAD-E46-323. Designed as a direct-fit performance replacement for selected manual-transmission BMW E46 3 Series models, this radiator provides increased cooling capacity and improved heat dissipation compared with the factory radiator.

The original BMW E46 radiator uses plastic components that can deteriorate with age and repeated heat cycles. The Mishimoto performance radiator replaces the factory design with a fully brazed aluminium core and TIG-welded aluminium end tanks, making it an excellent cooling upgrade for road cars, tuned vehicles and cars subjected to demanding driving conditions.

Key Features & Benefits

• Direct-fit performance radiator for selected BMW E46 Non-M manual models
• Suitable for 323i, 325i, 328i and 330i
• Large 2-row aluminium core
• Fully brazed aluminium construction
• TIG-welded aluminium end tanks
• Designed to reduce coolant temperatures by up to 19°F / 10.5°C compared with the stock radiator
• Approximately 20% greater coolant capacity
• Approximately 18% greater coolant surface area
• Approximately 41% greater air surface area
• CNC-machined quick-disconnect inlet and outlet fittings
• Designed to work with the factory BMW radiator hoses
• Compatible with Mishimoto E46 Non-M silicone radiator hoses
• Compatible with the factory electric cooling fan
• Compatible with the Mishimoto E46 Non-M performance fan shroud
• Magnetic drain plug included
• Mounting hardware included
• Mishimoto Lifetime Warranty

Improved Cooling for the BMW E46

Keeping coolant temperatures under control is particularly important on an ageing or modified BMW E46. Mishimoto developed this radiator to improve cooling efficiency while maintaining straightforward installation and compatibility with the original cooling-system layout.

Its larger two-row core provides more area for coolant and airflow, while the increased coolant capacity allows the system to absorb and dissipate additional heat.

Mishimoto reports a coolant-temperature reduction of up to 19°F (10.5°C) compared with the standard radiator.

Full Aluminium Construction

Unlike the factory radiator’s plastic-based construction, the Mishimoto radiator uses a 100% brazed aluminium core with aluminium end tanks.

The end tanks are TIG welded for strength and durability, making the radiator particularly suitable for enthusiasts looking to replace an ageing original radiator while simultaneously improving cooling performance.

Direct-Fit E46 Installation

The radiator has been engineered specifically around the BMW E46 Non-M cooling system. Precision CNC-machined quick-disconnect fittings are designed to connect correctly with the vehicle’s factory-style radiator hoses.

It can also be used with the standard BMW electric fan or combined with Mishimoto’s E46 Non-M performance fan-shroud system.

Vehicle Compatibility

Designed for selected 1999-2006 BMW E46 Non-M vehicles with manual transmission, including:

• BMW E46 323i
• BMW E46 325i
• BMW E46 328i
• BMW E46 330i
• BMW 330i ZHP models where applicable

Important: This SKU is intended for manual-transmission applications. Mishimoto produces a separate radiator version for automatic-transmission vehicles.

Technical Specifications

Manufacturer: Mishimoto
SKU / Part Number: MMRAD-E46-323
Chassis: BMW E46
Construction: Aluminium
Core: 2 Row
Overall Length: 18.63 in
Overall Height: 27.75 in
Overall Width: 3.75 in
Core Length: 22.88 in
Core Height: 17.75 in
Core Thickness: 1.50 in
Fluid Capacity: 2.51 US gal
Inlet Size: 1.50 in
Outlet Size: 1.30 in
Drain Plug Thread: M12 x 1.5
Transmission: Manual
Warranty: Mishimoto Lifetime Warranty

What’s Included?

• Mishimoto Performance Aluminium Radiator
• Magnetic drain plug
• Mounting hardware
• Mishimoto Lifetime Warranty

Why Upgrade Your BMW E46 Radiator?

The E46 is now a modern classic, and deterioration of ageing plastic cooling-system components is a well-known consideration when maintaining these vehicles. Replacing the radiator with an aluminium performance unit can provide greater durability while also increasing cooling capacity.

Whether your BMW is used as a daily driver, fast-road car, modified project or occasional track car, the Mishimoto MMRAD-E46-323 offers a performance-focused replacement for the standard radiator.

Order the Mishimoto MMRAD-E46-323 Performance Aluminium Radiator for your BMW E46 from Performance Cars Parts UK.

The performance figures, dimensions and included components above come from Mishimoto’s current specification: 20% increased coolant capacity, 18% increased coolant surface area, 41% increased air surface area, two-row construction and 2.51-gallon capacity.