OKAY MOTOR PCV Breather Hose 3-Way Replacement for BMW N52 3.0L (OEM 11157559528) Direct-Fit

OKAY MOTOR 3-way PCV crankcase breather hose is a direct-fit aftermarket replacement for BMW N52 3.0L engines using OEM 11157559528.

If your BMW 128i, 328i, 528i, X3, X5 or Z4 with the N52 3.0L L6 is showing oil vapor smell, poor idle, or visible deteriorated vacuum hoses, this replacement 3-way breather hose restores proper crankcase ventilation and fits the E60, E82, E90, E91, E92, E93 platforms. This OKAY MOTOR component is manufactured as a brand-new aftermarket part built to match the fit and routing of the original PCV plumbing so you can reinstall without adapter modifications.

How will this hose fit my BMW model and engine?

The hose is designed for BMWs equipped with the N52 3.0L inline-six and matches OEM part numbers 11157559528 / 11-15-7-559-528. It fits models including 128i, 328i, 328xi, 528i, 528xi, X3, X5 and Z4 across the specified chassis codes. Verify the part number and routing against your original assembly before ordering.

• Direct-fit replacement for OEM 11157559528
• Compatible with E60, E82, E90, E91, E92, E93, Z4, X3, X5 models
• Made for N52 3.0L L6 engine layout
• Designed to match factory hose routing and connections

What are the construction and durability features?

The OKAY MOTOR 3-way breather hose is produced as a new aftermarket unit with durable rubber and molded junctions intended to resist heat, oil exposure, and engine bay wear. While aftermarket, the materials and assembly aim to provide reliable service comparable to the original component. Regular visual inspection is recommended to catch wear before failure.

• New aftermarket construction with molded junctions
• Engine-grade rubber formulated for oil and heat resistance
• Reinforced connection points to maintain vacuum integrity
• Manufactured to match OEM connection locations and angles

How do I install the PCV crankcase breather hose and what should I watch for?

Installation follows the factory routing: remove the old hose, compare clamps and connector types, then fit the new hose into each mating port ensuring secure clamps. Check for vacuum leaks after installation by listening for hissing at idle and verifying stable engine operation. If unsure, have a qualified technician perform the swap to avoid misrouting or loose fittings.

• Compare OE numbers and hose shape before installation
• Use original or new clamps to secure all connections
• Verify no kinks or sharp bends that could restrict flow
• Inspect for leaks and proper idle after installation

What should I know about compatibility and part verification?

Before purchasing, match this hose visually and numerically to the part installed on your vehicle — the listing corresponds to the OEM 11-15-7-559-528 number used on many N52 3.0L applications. Differences in routing or additional vacuum fittings on certain submodels can occur, so careful comparison avoids fitment issues. Contact a dealer or reference your vehicle’s service manual if you’re uncertain.

• OEM cross-reference: 11157559528 / 11-15-7-559-528
• Used on many N52 3.0L BMW models, check chassis compatibility
• Compare photos and original hose layout before ordering
• Aftermarket product — sold as a replacement component

Who is this for: This OKAY MOTOR 3-way PCV crankcase breather hose is aimed at DIY BMW owners, independent mechanics, and repair shops working on N52 3.0L engines who need a cost-effective, direct-fit replacement. It’s appropriate for drivers experiencing age-related hose cracking, oil vapor intrusion, or ventilation leaks and for anyone restoring proper PCV function using the OEM 11157559528 reference. Always confirm fitment and maintain routine inspections after installation.