CSF 3055 2-Row Aluminum Radiator for 1999-2006 BMW E46/E85 Z4 Manual RWD

Vehicle Fitment

• 1999-2006 BMW 3 Series E46 (320i/323i/325i/328i/330i/330ci; manual transmission, RWD)
• 2003-2005 BMW Z4 E85 (2.5i/3.0i; manual transmission, RWD)

Features

• 2-row B-Tube core (1.63" thick) for enhanced cooling capacity (~25-30 % better than OEM) :contentReference[oaicite:6]{index=6}
• Multi-louvered fins (6.5 mm high) for optimal airflow :contentReference[oaicite:7]{index=7}
• All-aluminum TIG-welded construction (tanks & core)
• CNC-machined quick-connect inlet/outlet and mounting brackets
• Race-style aluminum drain plug
• Designed for drop-in fit with OEM hoses, fan shroud & AC condenser :contentReference[oaicite:8]{index=8}
• Individually pressure and leak tested
• Engineered specifically for manual transmission applications only :contentReference[oaicite:9]{index=9}

Specifications

• Core dimensions: approx. 22.72" x 17.00" x 1.63" :contentReference[oaicite:10]{index=10}
• Inlet/outlet size: 1.50" diameter :contentReference[oaicite:11]{index=11}
• Material: 100 % aluminum, pressure/leak-tested
• Drivetrain: RWD only
• Transmission compatibility: manual only (not for automatics) :contentReference[oaicite:12]{index=12}
• Fitment confirmed 1999-2006; coverage beyond unconfirmed

Included Components

• 1x CSF 3055 aluminum radiator
• Mounting brackets and hardware

Product Description

The CSF 3055 is a high-performance, all-aluminum radiator engineered as a direct-fit upgrade for BMW E46 3 Series (1999-2006) and Z4 E85 (2003-2005) models equipped with manual transmission and rear-wheel drive. Featuring a robust 2-row, 1.63" thick B-Tube core and multi-louvered fins, it delivers approximately 25-30% improved cooling over OEM units - critical for aggressive driving or track use :contentReference[oaicite:13]{index=13}.

Constructed with TIG-welded aluminum tanks and CNC-machined fittings, the CSF 3055 installs cleanly using factory hoses, condenser, and fan shroud with no modifications needed. Each radiator undergoes individual pressure and leak testing, and includes a race-style drain plug for durability and maintenance convenience.

Designed exclusively for manual transmission models, this radiator is perfect for BMW enthusiasts seeking enhanced thermal management and long-term reliability in demanding driving scenarios. Fitment confirmed through 2006; coverage beyond is unconfirmed at listing time.