BMW N57 Crankshaft Belt Pulley / TOPRAN 502 787 OE11237800026

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⚙️ Crankshaft Belt Pulley – TOPRAN 502 787

Manufacturer:
🇩🇪 TOPRAN (Hans Pries GmbH) – A German aftermarket brand offering OE-equivalent components. This pulley is engineered to dampen torsional vibrations and maintain precise belt alignment in high-torque diesel applications.

Part Number: 502 787
OE Reference: 11 23 7 800 026 / 11237800026
Pulley Type: V-ribbed belt pulley with integrated vibration damper
Grooves: 7PK
Material: Steel + elastomer (decoupled design)
Outer Diameter: ~170–194 mm (varies slightly by supplier spec)
Weight: ~5.7 kg
Made in: Turkey / EU

🔧 Engine Compatibility

• N57D30A
• N57D30B
• N57D30C
• 5 Series (F10, F11, F07 GT) – 525d / 530d / 535d
• 7 Series (F01, F02, F03, F04) – 730d / 740d
• X5 (E70 LCI, F15) – xDrive30d / xDrive40d
• X6 (E71, F16) – xDrive30d / xDrive40d
• 3 Series / 4 Series (E90–F30) – 325d / 330d / 335d
• 6 Series (F06, F12, F13) – 640d
• Alpina D3 / D5 BiTurbo – N57-based variants