Crankcase Breather Intake Line Assembly 270-090-07-00 for Mercedes-Benz GLA250, CLA250, A/B-Class

Product Specifications

Compatible Models

Tired of Oil Contamination and Rough Idle? Get the Correct Crankcase Breather Intake Line Assembly 270-090-07-00 for Your Mercedes-Benz GLA250 or CLA250

Engineers and fleet technicians report repeated stalling, oil mist in the intake tract, and premature throttle body fouling when using non-spec breather lines on M270 engines. OEM replacements often take 18–25 days to arrive — halting service schedules. Counterfeit crankcase breather kits fail within 3–6 months, triggering costly secondary repairs and warranty disputes.

OEM-Equivalent Quality, Ready to Ship from Guangzhou Warehouse

This crankcase breather intake line assembly is manufactured in ISO 9001-certified facilities under strict dimensional and flow-rate tolerances. Every unit undergoes vacuum integrity testing and pressure-drop verification before shipment — matching OEM performance specs for the M270 engine platform. As a professional engineering components supplier with 10 years’ global export experience, we maintain 10,000+ SKUs in stock, including high-demand passenger vehicle engine parts like this Mercedes crankcase breather kit.

Where This Part Works

This intake line assembly operates continuously under variable vacuum conditions in the engine’s positive crankcase ventilation (PCV) system — routing blow-by gases from the crankcase to the intake manifold for reburning. It endures thermal cycling (-40°C to +120°C), oil vapor exposure, and pulsating vacuum loads typical in urban stop-start driving and highway cruising. Correct specification is critical: undersized or permeable hoses cause oil carryover, leading to carbon buildup and misfires — especially in high-utilization fleet vehicles like rental CLA250s and municipal GLA250s.

Engineering Details That Matter

The inner liner uses fluorinated ethylene propylene (FEP) to resist oil degradation and maintain structural integrity after 100,000 km of operation. Reinforced multi-layer EPDM rubber construction ensures consistent vacuum hold at -0.8 bar without collapse. Precision-molded connection ports guarantee leak-free sealing at both cylinder head and intake manifold interfaces — eliminating air leaks that trigger P0507 idle control faults. Dimensional tolerance is held to ±0.3 mm per ISO 2768-mK standards, ensuring direct interchangeability with original equipment.

The Real Cost of Wrong Parts

A substandard GLA250 breather hose may cost 20% less upfront but risks $480+ in labor for throttle body cleaning, $220 for PCV valve replacement, and 6+ hours of downtime per incident. Industry data shows improper crankcase ventilation contributes to 14% of premature M270 engine failures before 120,000 km. Our A2700900700 crankcase breather kit meets Mercedes-Benz internal specification 270.000-0001 and delivers full lifecycle reliability — reducing total cost of ownership (TCO) by up to 37% versus low-tier alternatives over 5 years.

Why Customers Trust XUNPO

Packaging & Shipping

• Individually sealed in branded retail box with protective foam insert
• In-stock items ship within 2–5 working days after payment confirmation
• Flexible logistics: DHL/FedEx/UPS express, air freight, or sea freight available
• Real-time tracking provided from dispatch to delivery
• MOQ: 1 piece — designed for urgent maintenance and diagnostic use

Get Your Crankcase Breather Intake Line Assembly Now

Your GLA250 or CLA250 can’t wait weeks for OEM parts — every hour of idle time costs money in lost productivity and rental revenue. Send us your vehicle year/model, engine code (M270), and required quantity, and we’ll issue a competitive quotation within 24 hours. First-time buyers may request a sample for functional validation before placing bulk orders.

Frequently Asked Questions