Core Selling Points

High-frequency maintenance part with stable repeat bulk orders

Crankcase breather covers are vulnerable wearing parts for M276 V6 engines. Original plastic housings suffer thermal aging, cracking, internal oil separator blockage and sealing ring failure under long-term engine high temperature. Damaged housings lead to excessive engine oil consumption, blue exhaust smoke, intake carbon buildup, rough idle and even catalytic converter damage. Professional Mercedes repair garages and global spare parts distributors place recurring bulk orders all year round, bringing steady sales volume and attractive profit margins for dealers.

100% OE precise fit, direct bolt-on installation without modification

Manufactured strictly following Mercedes original mold, mounting hole spacing, ventilation outlet interface and internal oil separation channel standards. Plastic housing outline, four fixing bolt positions, built-in ventilation valve and matched orange silicone sealing gasket fully match genuine OEM specifications. No cutting, trimming or pipeline refitting required during replacement, perfectly mounted on the cylinder head to greatly reduce overhaul labor hours.

Full Compatible M276 Vehicle Chassis

• W204 C-Class: C300, C350
• W212 E-Class: E350, E400
• X204 GLK350
• W166 ML/GLE350
• W221/W222 S350
• V251 R350, R172 SLK350, C218 CLS350

Reinforced high-temperature resistant plastic structure

1. Modified high-strength heat-resistant PA66 plastic housing, anti-brittle cracking under long-term engine compartment high heat
2. Integrated grid reinforced support structure, eliminate plastic deformation caused by thermal expansion
3. Built-in labyrinth oil separation baffle, efficient separation of oil mist from crankcase waste gas
4. Supporting high-temperature fluorine silicone sealing ring, resistant to engine oil and high temperature, permanent leak-proof performance
5. Integrated quick connector ventilation port, tight connection without vacuum leakage

Stable crankcase ventilation to protect engine and exhaust system

Effectively separate oil mist from blow-by gas, return engine oil back to oil pan and discharge filtered waste gas into intake manifold. Maintain normal crankcase internal pressure, eliminate oil vapor backflow into intake pipeline, reduce carbon accumulation and stop abnormal oil burning. Prevent oil contamination of turbocharger and three-way catalytic converter to extend engine service life.

Fully resolve common housing cover failure faults

Perfectly fixes typical M276 engine issues:

• Serious engine oil consumption, obvious blue smoke during acceleration
• Rough unstable idle speed, engine shaking at cold start
• Massive carbon deposit inside intake manifold
• Vacuum leakage leading to weak power output
• Cracked plastic housing causing oil mist leakage
• Abnormal oil smell inside engine bay

Rigorous multi-stage factory testing & sufficient spot stock

Each housing cover undergoes air tightness vacuum test, high-low temperature cycle aging test, oil mist separation efficiency test and dimensional tolerance inspection before delivery, compliant with TS16949 automotive quality standards. Mass ready stock supports mixed one-stop bulk procurement with piston kits, gaskets and other M276 engine overhaul parts. Custom neutral packaging and private label OEM services are available for cross-border wholesale customers.