Intercooler BMW E46 318d, 318td, 320d, 320td, 320Cd, 330d, 330xd, 330Cd M47N, M57N

KPerformance™ Front Mount Intercooler for BMW E46 318d, 318td, 320d, 320td, 320Cd, 330d, 330xd, 330Cd models with updated M47N (M47TU) and M57N (M57TU) engines.

Our intercooler delivers up to 186% more cooling capacity over OEM. Built with a high-density Bar & Plate core, it keeps intake temps low even under extreme boost pressures (3 bar+). The result is reliable, consistent performance — perfect for aggressive Stage 2 and Stage 3+ builds, where every degree counts.

FITS THESE BMW MODELS:

BMW 3 Series: E46 [2003/03 – 2005]
318d (85kw / 116hp) – M47N
318td (85kw / 116hp) – M47N
320d (110kw / 150hp) – M47N
320td (110kw / 150hp) – M47N
320Cd (110kw / 150hp) – M47N
330d (150kw / 204hp) – M57N
330xd (150kw / 204hp) – M57N
330Cd (150kw / 204hp) – M57N

IMPORTANT: This intercooler only fits cars built from 2003/03 onwards with the updated M47N (M47TU) or M57N (M57TU) engine and OEM intercooler code 17517793370. It WILL NOT fit: cars built before 2003/03 with the early M47 / M57 engine and OEM intercooler code 17517786351.

The early intercooler uses a hose clamp on the inlet connection, while ours uses a spring clip (C-clip) connection. Not sure which one you have? Send us your VIN before ordering, and we’ll check for you.

SPECIFICATION:

• Core width: 550 mm
• Core height: 140 / 170  mm
• Core depth: 20 / 120 mm
• Inlet connection: 62 mm
• Outlet connection: 62 mm
• Air capacity: 10.9 L
• Structure: Bar & Plate
• High-grade aluminum
• Intercooler weight: 8.1 kg

⚠️ BE AWARE: Not All Intercoolers Are Created Equal

Many less reputable sellers offer intercoolers that may look identical on the outside, but inside they use a cheap Tube & Fin core. These cores are typically 30–60% lighter, far less durable, and deliver only a fraction of the cooling performance of a true Bar & Plate intercooler.

OEM reference part numbers: 17 51 7 793 370, 17517793370, 7793370