HomeEmission Control > Crankcase Ventilation SystemGenuine 1170940191 Engine Crankcase Breather Hose
Part #: 1170940191

Genuine 1170940191 Engine Crankcase Breather Hose

⚙️ 2 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Mercedes-Benz, 450SE, 450SEL, 450SLC, 450SL, 280SE, 280SEL, and 300SEL
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Overview of Genuine Engine Crankcase Breather Hose

The Genuine Engine Crankcase Breather Hose, part number 1170940191, is designed specifically for Mercedes-Benz 300SEL models. This component plays a critical role in the vehicle's emission control system by managing crankcase ventilation effectively.

  • Compatible with Mercedes-Benz 300SEL
  • Part number 1170940191 ensures exact OEM fit
  • Essential for proper crankcase ventilation and emission control
  • Durable construction for reliable engine performance
  • Direct replacement for factory-installed breather hose

Detailed Product Description

This Genuine Engine Crankcase Breather Hose (1170940191) is engineered to meet the specifications of the original equipment manufacturer for the Mercedes-Benz 300SEL. It connects the crankcase to the intake system, allowing gases to be vented and recirculated, which helps reduce harmful emissions and maintain engine efficiency. The hose is constructed from materials designed to withstand heat and chemical exposure typical in engine compartments, ensuring long-term durability and consistent performance.

Function and Common Applications

This breather hose is a vital part of the emission control system and is used to:

  • Prevent pressure buildup in the engine crankcase
  • Reduce harmful hydrocarbon emissions
  • Maintain optimal engine performance by allowing proper ventilation
  • Help avoid oil leaks caused by excessive crankcase pressure
  • Support compliance with emission regulations for Mercedes-Benz 300SEL vehicles

Installation Notes and Tips

When installing the Genuine Engine Crankcase Breather Hose (1170940191) on a Mercedes-Benz 300SEL, ensure the following:

  • Inspect the hose routing to avoid kinks or sharp bends
  • Check all connection points for secure fit and proper sealing
  • Replace any worn or damaged clamps during installation
  • Verify compatibility with the vehicle’s model year and engine configuration

Quality Assurance and Warranty

Genuine parts like the 1170940191 Engine Crankcase Breather Hose are manufactured to meet strict quality standards for Mercedes-Benz vehicles. This ensures reliable fitment and function consistent with factory specifications. While specific warranty details may vary, Genuine parts typically come with a limited warranty covering defects in material and workmanship to provide confidence in your replacement component.

This part fits 2 vehicles. Search below:

YearMakeModelPositionNotes
1973Mercedes-Benz300SELN/AIdle Adjuster Housing
1972Mercedes-Benz300SELN/AIdle Adjuster Housing

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.