Crankcase Breather Intake Line Assembly 270-090-07-00 for Mercedes-Benz GLA250 CLA250 A-Class B-Class CLA GLA 2013-2020

Product Specifications

Compatible Models

Tired of Crankcase Breather Failures on Your Mercedes-Benz GLA250 or CLA250?

Engine oil contamination, rough idle, and check engine lights often trace back to cracked or clogged crankcase breather intake lines — especially on high-mileage M270 2.0L engines. OEM replacements cost 40% more and take 3 weeks to arrive. Many buyers unknowingly install non-OEM hoses that collapse under vacuum or degrade from oil vapor exposure — leading to repeated failures and costly diagnostics.

OEM-Equivalent Quality, Ready to Ship

This Crankcase Breather Intake Line Assembly is manufactured in ISO 9001-certified facilities and undergoes full functional testing before shipment. Designed for direct replacement on Mercedes-Benz GLA250, CLA250, A-Class, and B-Class models, it restores proper crankcase ventilation during engine operation — preventing oil mist buildup, valve cover gasket failure, and PCV system overload. With 10 years’ experience supplying precision automotive and industrial components globally, XUNPO ensures dimensional accuracy and material integrity you can trust in real-world service.

Where This Part Works

This assembly operates continuously under variable vacuum conditions in passenger vehicle engine bays — exposed to oil vapors, thermal cycling (-30°C to +120°C), and under-hood vibrations. It’s critical in urban stop-start driving, long-haul highway use, and fleet maintenance environments where consistent engine breathing directly impacts emissions compliance, fuel efficiency, and service intervals. A reliable GLA250 breather hose prevents oil carryover into the intake — a common cause of carbon buildup on intake valves in direct-injection M270 engines.

Engineering Details That Matter

The inner liner uses fluorocarbon-resistant EPDM rubber, rated for continuous contact with hot crankcase vapors and hydrocarbon oils — unlike generic silicone hoses that swell and delaminate. Reinforced multi-layer construction maintains roundness under vacuum down to -75 kPa, ensuring stable airflow across the full RPM range. Precision-molded connection ports match OEM sealing geometry and clamping force requirements — eliminating leaks at the cylinder head and air filter housing interfaces. Tolerance-controlled wall thickness (±0.15 mm) guarantees fitment without trimming or adapter use on all listed M270-platform vehicles.

The Real Cost of Wrong Parts

A $12 counterfeit breather hose may save upfront, but risks oil ingestion into the combustion chamber — causing misfires, catalytic converter damage, and potential turbocharger oil coking. Industry data shows improper crankcase ventilation contributes to 23% of premature M270 engine rebuilds. OEM-equivalent parts like this 270-090-07-00 for Mercedes-Benz GLA CLA reduce total ownership cost by avoiding repeat labor, diagnostic time, and secondary component damage. Our parts meet ISO/TS 16949-aligned production standards — not just appearance, but function and longevity.

Why Customers Trust XUNPO

Packaging & Shipping

• Individually sealed in anti-static bag, cushioned with molded EPE foam, and packed in reinforced corrugated carton labeled with part number and model coverage
• In-stock items ship within 2–5 working days after payment confirmation
• Flexible logistics: Express (DHL/FedEx/UPS), air freight, or sea freight — choice based on urgency and destination
• Real-time tracking provided from warehouse dispatch to final delivery
• MOQ is 1 piece — designed for urgent repair needs and fleet maintenance planning

Get Your Crankcase Breather Intake Line Now

Your GLA250 or CLA250 shouldn’t sit idle waiting for parts. Send us the part number 270-090-07-00, your vehicle year/model, and required quantity — we’ll issue a competitive quotation within 24 hours. First-time customers may request a sample for physical verification and fitment test. Stock is available now in Guangzhou — the faster you inquire, the sooner your engine breathes cleanly again.

Frequently Asked Questions