Buildjournal Adjustable Radiator Duct – E46 M3


Lower your E46 M3 S54 water and oil temps with the Buildjournal Radiator Duct. Made with 6061-T6 aluminum and powder coated in black for durability. This design replicates the factory style radiator shroud and uses 4 nutserts to install directly onto the existing factory holes. Adjustability to raise or lower the bottom duct panel to accommodate various cooling setups. This setup will replace the bottom half of the factory radiator duct which can be cut in half if you want to retain the upper duct. See DIY below.

Aluminum bumper carriers may need additional trimming to the bumper or Radiator Duct for proper clearance. OEM lower grill will require minor trimming for side duct clearance. Mesh style screens can be used as an alternative.

In stock (can be backordered)

SKU 146854 Categories , Tag

Radiator Duct Install DIY

Learn How
BMW E46 M3 Radiator Duct - Buildjournal

Lower Oil and Water Temps

Height Adjustable

E46 M3 Radiator Duct - Buildjournal
E46 M3 Radiator Duct - Buildjournal

Side Air Seal

Clearance for Splitter Bracket

BMW E46 M3 Radiator Duct - Buildjournal
E46 M3 Radiator Duct - Buildjournal

Beveled Lip to Divert Air Flow

Bolt-On Solution

E46 M3 Radiator Duct - Buildjournal

Temperature Demonstration

Fitted with CSF Oil Cooler and Radiator

Weight4 lbs








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