KPerformance™ Front Mount Intercooler for BMW E65, E66 730d, 730Ld models with M57N2 (M57TU2) engine. Our intercooler delivers up to 90% 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 7 Series: E65, E66 [2005-2008] 730d (170kw / 231hp) – M57N2 730Ld (170kw / 231hp) – M57N2 Note: If your model is not listed here, look for it under another product. If you cannot find your model anywhere, contact us for assistance. SPECIFICATION: • Core width: 520 mm • Core height: 240 / 130 mm • Core depth: 50 / 150 mm • Inlet / outlet: 59 mm • Air capacity: 13.5 L • Structure: Bar & Plate • High-grade aluminum • Intercooler weight: 9.3 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 7 791 909, 17517791909, 7791909