Auto Parts Prodigy BMW N52 Crankcase Vent Breather Hose Kit — 2006–2007 3.0L with PCV Valve & Oil Separator

This Auto Parts Prodigy breather hose kit replaces the worn BMW N52 PCV components to restore proper crankcase ventilation and stop vacuum leaks in 2006–2007 3.0L N52 engines.

If your 2006–2007 BMW 325i, 330i, 525i, 530i or Z4 is showing rough idle, oil consumption, or P0171/P0174 lean codes, the likely culprit is a failing PCV/breather hose system. This complete five-piece kit is engineered to the same dimensions as the original parts and includes the pressure-regulating PCV valve, oil separator return hoses, manifold breather hose, valve cover connectors, and all required O-rings and grommets so you can perform a confident DIY replacement.

How does this kit stop rough idle and oil burning?

A failing crankcase ventilation path creates vacuum leaks and inconsistent crankcase pressure, which can lead to lean engine codes and oil being drawn into the intake. The kit restores the correct sealed routing and pressure control to the crankcase through a precision valve and new return hoses.

• Replaces worn hoses and valves that cause vacuum leaks and oil ingestion.
• Pressure-regulating valve holds target crankcase vacuum (approx. 0.5–1.0 psi).
• New O-rings and grommets ensure leak-free seals at valve cover and manifold connections.

Will this fit my BMW N52 engine and which OEM numbers does it replace?

The kit was designed specifically for 3.0L N52 engines built into E90, E91, E60 and E61 chassis from model years 2006–2007. It directly replaces the factory parts and matches the dimensions for a plug-and-play swap.

• Compatible with 2006–2007 325i, 325xi, 330i, 330xi, 525i, 525xi, 530i, 530xi and Z4 models with the N52 engine.
• Replaces BMW part numbers 11617531423, 11617504535, 11617522923.
• Includes a simple installation guide and torque specs for fast, correct fitment.

What materials and longevity can I expect from these parts?

The hoses are made from reinforced, heat-resistant rubber designed to tolerate high underhood temperatures, while the valve uses durable composite and brass internals for consistent performance. That construction resists cracking and deformation that commonly shortens the life of cheap replacements.

• Reinforced rubber hoses rated for sustained high temperatures (300°F+).
• Precision-machined brass internals in the regulator for steady vacuum control.
• Composite assemblies engineered to last 60,000+ miles under normal use.

How difficult is installation and what’s included in the box?

The kit was built for DIY mechanics and professional shops alike: pre-formed hoses match OEM lengths so no trimming is required, and no specialty tools are needed beyond a standard socket set. The average installation time is under an hour for anyone comfortable working under the hood.

• Complete five-piece replacement: PCV valve, oil separator return hoses (24cm and 12cm), valve-to-manifold hose (18.5cm), valve cover fittings.
• All O-rings and grommets included; pre-formed hoses for plug-and-play installation.
• Detailed install guide with torque specs and link to step-by-step video to save dealer labor costs.

Who is this for? This Auto Parts Prodigy kit is aimed at BMW owners and independent mechanics troubleshooting rough idle, oil consumption, or lean codes on 2006–2007 N52-equipped cars who want an OEM-dimension replacement that’s durable, straightforward to install, and saves on dealer repair costs. If you can change basic routine parts like spark plugs or intake hoses, you can replace this PCV system and restore reliable crankcase ventilation.