HomeEmission Control > Crankcase Ventilation SystemGates EMH300 Engine Crankcase Breather Hose - Oil Separator To PCV Valve
Part #: EMH300

Gates EMH300 Engine Crankcase Breather Hose - Oil Separator To PCV Valve

Emission Control Hose, Oil Separator To PCV Valve
⚙️ 11 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Emission Control Hose, Oil Separator To PCV Valve
🚗Fitment: BMW, 540i, 740i, and 740iL
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Overview of Gates Emission Control Hose EMH300

The Gates Emission Control Hose EMH300 is designed specifically for BMW 540i, 740i, and 740iL models. This engine crankcase breather hose ensures proper ventilation within the crankcase ventilation system, maintaining engine performance and emission standards.

  • Constructed from durable steel and rubber materials
  • Inside diameters of 1.01 inches (26 mm) and 0.58 inches (15 mm) for precise fitment
  • Centerline length of 18.8 inches (478 mm) for accurate replacement
  • Push-in end types on both ends for secure connection
  • OE exact comparison rating for reliable OEM compatibility

Detailed Product Description

The EMH300 is part of the Gates Emission Control Hose product line, which focuses on components designed to manage and control engine emissions effectively. This hose is molded and constructed from a combination of steel and rubber, providing the necessary flexibility and strength to withstand engine bay conditions. With two different inside diameters (1.01 inches and 0.58 inches), it fits precisely within the crankcase ventilation system of select BMW models. The push-in end types on both ends facilitate straightforward installation and secure hose connections without the need for additional hardware.

Applications and Problem Solving

  • Prevents crankcase pressure buildup by allowing proper ventilation
  • Reduces harmful emissions by maintaining crankcase breather system integrity
  • Eliminates vacuum leaks that can cause rough idling or engine performance issues
  • Replaces worn or cracked hoses that may lead to oil leaks or contamination
  • Ensures compliance with emission control standards for BMW 540i, 740i, and 740iL

Installation Notes and Tips

When installing the Gates EMH300 hose, ensure both push-in ends are fully seated to prevent leaks. The hose’s molded design allows for a direct replacement without modification. It is recommended to inspect surrounding components for wear or damage during installation. No additional hardware is required for installation, simplifying the replacement process.

Quality Assurance and Warranty

Gates maintains strict quality control standards for the Emission Control Hose line, including the EMH300. This part meets OE exact comparison ratings, ensuring it matches original equipment specifications for fit, form, and function. While specific warranty details are not provided, Gates products typically adhere to industry standards for durability and reliability.

BrandGates
Part NumberEMH300
PositionEmission Control Hose, Oil Separator To PCV Valve
MaterialSteel, rubber
Inside Diameter.58
Inside Diameter1.01
Inside Diameter15
Inside Diameter26
Centerline Length18.8
Centerline Length478
Hose Quantity1
End TypePush in
Branch Quantity0
Protective Sleeve IncludedNo
Hardware IncludedNo
9839Yes
98450
9853No
Centerline Length (in)18.8
Centerline Length (mm)478
End 1 TypePush in
End 2 TypePush in
Hardware IncludedNo
Inside Diameter 1 (in)1.01
Inside Diameter 1 (mm)26
Inside Diameter 2 (in).58
Inside Diameter 2 (mm)15
MaterialSteel, rubber
MoldedYes
Number of Branches0
Number of Hoses1
Number of Quick Connectors0
OE Comparison RatingOe exact

This part fits 11 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
2003BMW540i4.4LV8GASOil Separator To PCV ValveEmission Control Hose
2002BMW540i4.4LV8GASOil Separator To PCV ValveEmission Control Hose
2001BMW540i4.4LV8GASOil Separator To PCV ValveEmission Control Hose
2001BMW740i4.4LV8GASOil Separator To PCV ValveEmission Control Hose
2001BMW740iL4.4LV8GASOil Separator To PCV ValveEmission Control Hose
2000BMW540i4.4LV8GASOil Separator To PCV ValveEmission Control Hose
2000BMW740i4.4LV8GASOil Separator To PCV ValveEmission Control Hose
2000BMW740iL4.4LV8GASOil Separator To PCV ValveEmission Control Hose
1999BMW540i4.4LV8GASOil Separator To PCV ValveEmission Control Hose
1999BMW740i4.4LV8GASOil Separator To PCV ValveEmission Control Hose
1999BMW740iL4.4LV8GASOil Separator To PCV ValveEmission Control Hose

* 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:

11151705301911-114EMH300

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