Elring Cylinder Head Bolt Set – 233.380 (BMW N57 / B57 Diesel)

Quick Info

OE-quality cylinder head bolt set for BMW 3.0 diesel engines.
Used when reinstalling the cylinder head during gasket replacement or engine rebuilds.

---

Description

Elring 233.380 is a complete cylinder head bolt set designed for BMW N57 and B57 diesel engines.

These are torque-to-yield (stretch) bolts used to correctly secure the cylinder head to the engine block and maintain proper clamping force under high combustion pressure.

Elring is an OEM supplier trusted in professional engine rebuilds.

---

Fitment

Engines:

• N57 3.0D
• B57 3.0D

⚠️ Some early M57 overlap may exist — confirm via VIN before ordering.

---

Common Models

• F10 / F11 530d / 535d
• F30 / F31 330d / 335d
• G30 / G31 530d
• X5 E70 
• F15 X5 30d / 40d
• G05 X5 30d / 40d
• X6 / X7 diesel models

---

Part Numbers

• Elring: 233.380
• BMW OE references:
  • 11128511621
  • 11127812925
  • 11128513130

---

Technical Details

• Type: Cylinder head bolt set
• Quantity: 14 bolts
• Thread size: M12 x 1.5
• Length: 200mm
• Head type: Male Torx (E18)

---

Notes

• Single-use stretch bolts
• Designed for high-compression diesel engines
• Direct OE-quality replacement

---

Important

❗ Head bolts must not be reused
❗ Follow correct BMW torque sequence and angle settings
❗ Professional installation recommended

---

Common reasons for replacement

• Head gasket replacement
• Engine rebuild
• Cylinder head removal
• Lost bolt tension from previous use

---

Fitment Summary

✔️ N57 = correct
✔️ B57 = correct
✔️ OE-quality Elring bolts
⚠️ M57 = VIN check only