Gates EMH121 Engine Crankcase Breather Hose - Intake To Tube

OE-Exact Crankcase Breather Hose

Gates EMH121 is an OE-exact engine crankcase breather hose for emission control service. Built from plastic and rubber with a molded profile, it restores the crankcase ventilation path and helps maintain proper emission system operation on supported BMW applications.

For BMW 323i, 328i, 528i, 323Ci, 328Ci, Z3, and 328is models, this hose is shaped for the intake-to-tube routing used in the factory emission control layout. The Gates Emission Control Hose line focuses on replacement hoses that match original fit and function for service work where the factory hose has cracked, hardened, or separated.

Key Features

• OE-exact replacement hose for crankcase ventilation and emission control service
• Molded plastic and rubber construction for durability and service life
• Centerline length: 17.5 in. (445 mm)
• Inside diameters: 0.3 in. (8 mm) and 0.281 in. (7 mm)
• End types: clip-on and push-in
• Protective sleeve included for added abrasion resistance
• OE comparison rating: OE Exact
• Cross-reference part numbers include 11157520035 and 11617500021

Detailed Description

Gates EMH121 is an engine crankcase breather hose engineered for emission control repair on select BMW vehicles. It uses molded plastic and rubber construction, one quick connector, and a protective sleeve to match the factory routing and connection style at the intake-to-tube position. This part number is commonly searched as Gates EMH121 for BMW 323i, 328i, 528i, and Z3 emission hose replacement needs.

Compatible With 2000 BMW 323Ci, Intake To Tube; 1999-2000 BMW 323i, Intake To Tube; 2000 BMW 328Ci, Intake To Tube; 1999-2000 BMW 328i, Intake To Tube; 1999-2000 BMW 528i, Intake To Tube; 1999-2000 BMW Z3, Intake To Tube; 1999 BMW 328is, Intake To Tube; 1997-1998 BMW 323i, Intake To Tube; 1997-1998 BMW 328i, Intake To Tube; 1996-1998 BMW 528i, Intake To Tube; 1997-1998 BMW Z3, Intake To Tube.

What It Helps Fix

• Cracked or brittle crankcase breather hose material
• Vacuum leaks at the emission control hose connection
• Improper crankcase ventilation routing
• Check engine light concerns related to hose leakage
• Airflow issues caused by a damaged intake-to-tube hose

Installation Notes and Tips

Verify the hose routing, end style, and centerline length before installation. Confirm the vehicle build date where noted, since some listed BMW applications apply to Dec. 31, 1999 and older production. Inspect adjoining connectors and the intake tube for wear, and replace any damaged sealing surfaces before fitting the new hose.

Quality Assurance

Gates positions this Emission Control Hose line as an OE-exact replacement solution built from high-quality materials for long service life. EMH121 is made to restore the emission system to proper operation on the listed BMW applications.