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BMW

Genuine BMW Diesel Intercooler Outlet O-Ring RH (Offside/Passenger) – Charge Pipe/Boost Hose Seal, Charge Air Cooler CAC Gasket – M47 N47 M57 – Fits 120d 320d 330d 520d X3 E46 E90 E91 E83 – OEM/PN 11617788415

Genuine BMW Diesel Intercooler Outlet O-Ring RH (Offside/Passenger) – Charge Pipe/Boost Hose Seal, Charge Air Cooler CAC Gasket – M47 N47 M57 – Fits 120d 320d 330d 520d X3 E46 E90 E91 E83 – OEM/PN 11617788415

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Right-Side Charge Cooler Outlet Seal for BMW M47, N47 and M57 Diesel Engines

Eliminate boost loss and bring back crisp throttle response with this factory-spec outlet O-ring that seals the pressure pipe to the intercooler on the passenger side of the vehicle. Built to BMW’s original specification for the M47, N47 and M57 diesel powertrains, this precision sealing ring restores intake pressure integrity, stabilises turbo efficiency and helps keep your diesel running strong and smooth.

Part number: 11617788415

Why this OE-spec sealing ring is a smart fix

  • Original equipment quality for accurate fitment and long service life
  • Seals the pressure tube to the intercooler outlet on the right side to stop boost leaks
  • Helps cure underboost faults, flat spots and oil misting around the boost hose joint
  • Direct swap for the worn seal, no modifications required
  • Identified as item No. 2 in the official BMW parts diagram

Proven in our workshop

We have fitted this sealing ring on customer cars and in our own builds with excellent results. Owners consistently report tighter boost control, cleaner joints and improved drivability after replacing a flattened or hardened O-ring.

Compatibility

Designed for a wide selection of BMW diesel models using M47, N47 and M57 engines, including but not limited to:

  • 1 Series E81, E87, E87 LCI, E82, E88: 116d, 118d, 120d
  • 3 Series E46: 318d, 318td, 320d, 320td, 320Cd, 330d, 330Cd, 330xd
  • 3 Series E90, E90 LCI, E91, E91 LCI: 316d, 318d, 320d
  • X1 E84: 16d, 18d, 18d xDrive
  • X3 E83, E83 LCI: 2.0d, 3.0d

Often purchased for popular diesel variants such as 120d, 330d, 520d and X3 2.0d when addressing boost system leaks.

Check fitment before dispatch

For a hassle-free purchase, add your UK registration or the last 7 digits of your VIN at checkout and we will confirm suitability for part 11617788415 prior to shipping.

Symptoms this seal helps address

  • Hissing under load and loss of boost pressure
  • Oil residue around the intercooler outlet or charge pipe joint
  • Intermittent limp mode or underboost fault codes
  • Sluggish acceleration on diesel BMW models

Professional fitting available

Prefer us to install it for you? MJ Modifications in Warwickshire can handle the job. Request a fitting quote: info@mjmodifications.co.uk.

Manufacturer and warranty

Manufacturer: BMW

Warranty: Two years for UK customers and one year for international customers when a VIN is supplied at checkout on compatible vehicles.

Also known as

Boost pipe O-ring, charge pipe to intercooler seal, CAC outlet seal, IC outlet O-ring, pressure hose seal, intake boost seal, offside intercooler joint ring.

Search-friendly fitment tags

BMW diesel boost leak fix, M47 charge pipe seal, N47 intake pressure O-ring, M57 turbo pipe seal, E46 E90 E91 E81 E82 E88 E84 E83 boost hose seal, right-hand intercooler outlet ring, BMW 120d 320d 330d 520d X3 2.0d boost system seal, OEM 11617788415.

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