Mishimoto MMRAD-E46-323A Perf Aluminum Radiator for 1999-2006 BMW E46 323/325

Vehicle Fitment

• 1999-2006 BMW E46 non-M (323Ci/323i/325Ci/325i/325xi/328Ci/328i/330Ci/330i, 2.5L-3.0L I6, RWD/xi)

Features

• Direct-fit performance aluminum radiator engineered for E46 non-M 3-Series vehicles
• Fully brazed aluminum core and end tanks for superior thermal efficiency
• Thick dual-row core improves coolant surface area and heat rejection
• CNC-machined quick-disconnect fittings match OEM hoses exactly
• Polished finish enhances engine bay appearance
• Includes magnetic drain plug for easier coolant changes
• Lifetime limited Mishimoto warranty for long-term peace of mind
• Helps reduce operating temperatures during spirited driving or hot conditions

Specifications

• Material: 100 % brazed aluminum core and end tanks
• Core Rows: 2
• Core Thickness: ~1.50"
• Overall Height: ~27.75"
• Overall Length: ~18.63"
• Overall Width: ~3.75"
• Core Size: ~22.88" x 17.75"
• Inlet/Outlet OD: ~1.50" (ID ~1.30")
• Drain Plug Thread Size: M12 x 1.5 mm
• Fluid Capacity: ~2.5 gal

Included Components

• 1x Performance aluminum radiator (MMRAD-E46-323A)
• 1x Magnetic drain plug
• Mounting hardware

Product Description

The Mishimoto MMRAD-E46-323A Performance Aluminum Radiator is a direct-fit cooling upgrade designed for 1999-2006 BMW E46 non-M 3-Series models - including 323i, 325i, 328i, and 330i variants with 2.5L to 3.0L inline-6 engines. This radiator features a fully brazed dual-row aluminum core and polished end tanks that deliver significantly improved heat rejection over the stock plastic radiator, helping maintain lower coolant temperatures under heavy driving, warmer climates, or spirited use. Precision CNC-machined quick-disconnect fittings ensure seamless compatibility with OEM coolant hoses and Mishimoto E46 silicone radiator hoses.

With a ~20 % increase in coolant capacity and improved fluid and air surface area compared to the original radiator, the MMRAD-E46-323A supports better thermal performance while retaining factory mounting locations and fan compatibility. The included magnetic drain plug simplifies maintenance by capturing metallic debris during coolant changes. Backed by Mishimoto's lifetime limited warranty, this aluminum radiator is a popular upgrade for E46 3-Series owners seeking enhanced cooling efficiency, reliability, and long-term durability.