BMW Genuine Front Right Brake Air Duct — E46 3 Series
by BMW
Key Features
- Genuine BMW OEM part — exact factory specifications, no modifications required
- Channels cool air directly to front right brake assembly to reduce heat buildup
- Reduces brake fade risk under spirited or repeated hard braking conditions
- Prolongs pad and rotor life by maintaining lower, consistent operating temperatures
- Direct-fit replacement for E46 sedans and wagons (1999–2005)
- Backed by BMW's 2-year/24,000-mile manufacturer warranty
Product Details
- Brand
- BMW
- Part #
- 51718197928
- Category
- Brake Cooling & Ducts
- ASIN
- B00DD9G6D0
BMW Genuine Front Right Brake Air Duct — E46 3 Series — Overview
When BMW engineered the E46, they understood that proper brake cooling is as important as the brakes themselves. This genuine BMW front right brake air duct does exactly what the original did from the factory: direct a steady stream of ambient air into the brake assembly, keeping temperatures in check during aggressive driving, track days, or repeated downhill braking. It's not a workaround — it's the engineered solution BMW specified for this platform.
Unlike aftermarket alternatives that are often molded from lower-grade plastics with inconsistent wall thickness, this is the actual OEM component built to BMW's dimensional and material tolerances. That means the mounting points align perfectly, the duct geometry routes airflow exactly where the engineers intended, and the structural integrity holds up to road debris and underhood heat cycles over the long term.
Fitment covers a wide range of E46 sedans and wagons from the 1999–2005 model years, including the 320i, 323i, 325i, 328i, and 330i. Installation is a direct swap with no cutting, drilling, or adapter hardware — if you're replacing a cracked or missing duct, this drops right in. Note that this is the front right (passenger side) duct only; order separately if replacing both sides.
This part is covered by BMW's manufacturer warranty of 2 years or 24,000 miles, giving you confidence that you're installing a component that will perform and last. For an E46 that sees real roads, back roads, or weekend canyon runs, keeping the brake cooling system intact is one of the simplest ways to protect a much more expensive brake investment.
