The BMW K100’s crankcase breather hose plays a vital role in maintaining engine efficiency and longevity by regulating pressure and preventing oil fumes from entering sensitive components. Choosing the right breather hose ensures reliable engine function and protects against costly mechanical issues.
The crankcase breather hose acts as a critical safety valve in the engine’s breather system, allowing pressure buildup from combustion gases to escape safely. A high-quality hose from BMW or an OEM-compatible replacement minimizes oil vapor leaks, reduces corrosion risk, and helps maintain optimal oil levels, directly contributing to smoother engine performance and extended component life.
Premium breather hoses for the BMW K100 are typically crafted from durable, heat-resistant rubber compounds with reinforced braided sleeves. These materials withstand high engine temperatures and constant exposure to oil vapors, preventing cracks, brittleness, and degradation over time. This durability ensures long-term reliability and compatibility with the K100’s engine specifications.
Correct installation of the breather hose is essential for effective engine protection. The OEM part fits precisely, aligning with the engine’s crankcase breather port, ensuring a secure seal without restricting airflow. Using the right hose prevents oil foaming, reduces emissions, and maintains engine efficiency—critical for preserving the K100’s classic performance and reliability.
Worn or clogged breather hoses can lead to oil leaks, engine pressure loss, and reduced performance. Regular inspection, especially after long rides, helps identify cracks or blockages early. Replacing the hose every 30,000–50,000 miles, or as needed, keeps the engine breathable and protects against premature wear, ensuring your BMW K100 remains a trusted ride for years.
Investing in a high-quality BMW K100 crankcase breather hose is a small but impactful step toward preserving your motorcycle’s engine health. By ensuring proper ventilation and preventing harmful vapor buildup, this essential component supports peak performance, reliability, and longevity—keeping your classic K100 running smoothly for every journey.
Vent hose for Crankcase for BMW K75, K100 pre1990 (2V models) VentHoseClamp935 Vehicle Manufacturer: BMW Application: BMW K75, K100 Make/Model: C, RT, S, LT, RS Model Years: 1982-2005 Manufacturer Part #: 11 15 1 460 480 (see application table tab BELOW to verify vehicle fitment) Brand: BMW List Price $26.78 USD Price $16.75 Quantity in Stock:35. I have made a plan to solve or reduce the costs of our age old headache with the breather hoses that perish and cause rough and irregular idling. For the K75 and K100 2V I managed to get a local rubber component manufacturer to make the "Z" pipes at a fraction of the BMW price.
(USD 6 +/-) See the pic below. Home / Crankcase breather hose BMW K75 K100 NEW 11151460480 K Parts Holland SKU: C-A-6-1 Condition: New OEM: 11151460480 (verify in new window) Product can be used for: BMW K-SERIES: K75 K100-8V BMW R-SERIES: Price €14 99 €14,99. Vent Hose This is a high quality OEM equivalent vent hose.
This hose is located between the crankcase and air filter housing and is very often cracked. Equivalent to BMW part number 11 15 1 460 480 (11151460480) Made in Europe. Crankcase Breather Vent Hose - BMW K; 11 15 1 461 835, VentHose835 $49.99 + $9.06 shipping.
Brand new crankcase breather hose for all 2 valve K75/100 bikes. This is the hose that always cracks and leaks, causing hesitation. BMW OEM part # 11 15 1 460 480 retails for $15.09, save here!
Crankcase Breather Vent Hose BMW K75, K100 C, RT, S, LT, RS 1982. Crankcase breather hose BMW K1 K100-16V K1100 NEW 11151461835 Please sign in to see pricing prices are vat excluded Product can be used for:BMW K-SERIES: BMW R-SERIES. Make/Model: BMW K1, K75, K100, K1100 Model Years: 1982.
Crankcase Breather Vent Hose - BMW K1, K100, K1100; 11 15 1 461 835 / BMW Part # VentHose835 Vent hose for Crankcase for 4V models See VentHoseClamp935 for associated Hose Clamp. Vehicle Manufacturer: BMW Application: BMW K Bike Models Make/Model: BMW K1, K100RS, K1100LT, K1100RS Model Years: 1988 - 1997 Manufacturer Part #: 11 15 1 461 835.