KanSmart Crankcase Vent Hose for BMW N55 (OE 11127584128) — Direct-Fit, Heat-Resistant Replacement

KanSmart 11127584128 is a direct-fit crankcase vent hose engineered to restore proper PCV function on BMW N55-equipped models and replace the worn factory line.

This high-strength replacement hose is built for durability and tested before shipping to ensure reliable crankcase ventilation on compatible BMW vehicles. Designed to match the original equipment dimensions, it routes blow-by gases back into the intake—helping reduce oil leaks, vacuum problems, and performance inconsistencies caused by cracked or degraded PCV plumbing. The part ships as a single crankcase vent hose and comes backed by the seller's lifetime warranty and return policy.

Which BMW models and years does this KanSmart hose fit?

The KanSmart 11127584128 is specified for BMW applications using the N55 engine and the original OE part number. It fits multiple 1, 3, 5, 6 Series and X models across model years—always confirm your vehicle’s VIN and engine code before ordering to ensure compatibility.

• Common fits: 135i, 335i (including xDrive), 535i (including GT and xDrive), 640i (including Gran Coupe and xDrive)
• SUV fits: X1, X3, X4, X5, X6 across listed years
• Model years covered: roughly 2011–2017 depending on model and drivetrain
• Replacement for OE number 11127584128—verify against your existing hose

How does this crankcase vent hose improve engine performance?

While not a performance part, a new vent hose helps the PCV system operate correctly so the engine runs as the manufacturer intended. By re-routing crankcase gases into the intake, it reduces oil contamination, stabilizes idle, and prevents vacuum leaks that can lead to rough running.

• Restores correct crankcase pressure management to reduce oil seepage
• Helps prevent vacuum-related idle and drivability issues
• Limits oil misting that can foul intake components and sensors
• Improves combustion consistency by maintaining intended air/fuel mixing

What materials and design features make this hose durable?

KanSmart’s replacement is manufactured from resilient, heat- and oil-resistant materials to withstand engine bay conditions. The design mitigates cracking, hardening, and cold-season icing that commonly degrade factory hoses over time.

• High-quality elastomer resists oil and heat exposure
• Precise molding for secure, leak-free connections to fittings
• Engineered to minimize internal collapse and maintain airflow
• Tested prior to shipping to ensure consistent fit and function

Is installation difficult and what comes in the package?

Installation is straightforward for anyone comfortable working under the hood; the hose is a bolt-on, no-cut replacement that matches OEM routing. The package contains one crankcase vent hose; clamps or auxiliary fittings are not included unless specified by the installer.

• Package includes: one KanSmart crankcase vent hose (11127584128 replacement)
• Direct-fit design—no cutting, drilling, or permanent modification required
• Recommended tools: basic hand tools and possibly hose clamp pliers
• Check all mating seals and clamps during installation for best results

Who is this for: Owners and technicians of BMWs fitted with the N55 engine who need a dependable replacement for a failing or brittle crankcase vent hose. It's appropriate for DIY mechanics, independent shops, and fleet maintenance teams seeking an OE-number-compatible hose that restores proper PCV routing and helps prevent oil leaks and related drivability issues. Confirm fitment with your vehicle’s year, model, and engine code before purchase.