OKAY MOTOR N63 Crankcase Vent Hose Set for BMW 550i 650i 750i X5 X6 Alpina B7 — Left & Right PCV Hoses, Direct Fit N63 4.4L

OKAY MOTOR Set of 2 crankcase vent (PCV) hoses replaces left and right N63 breather lines for BMW 550i, 650i, 750i, X5, X6 and Alpina B7 models.

This aftermarket pair of crankcase vent hoses (left and right) is built to restore proper crankcase ventilation on BMW vehicles equipped with the N63 4.4L engine. Each hose connects the valve cover to the crankcase ventilation system — one serves cylinders 1–4 and the other serves cylinders 5–8 — and they are supplied as a matched set to ensure balanced airflow and easier installation. The parts are brand-new, designed to match the fitment of the referenced OEM numbers for straightforward replacement.

Which BMW models and engines does this OKAY MOTOR hose set fit?

These vent hoses are made for BMWs using the N63 4.4L twin-turbo V8. They fit a range of large sedans, coupes and SUVs from the model years that used this engine. Always verify compatibility with your VIN before ordering.

• Compatible models: 550i, 650i, 750i, X5, X6, Alpina B7 (F01, F02, F07, F10, F12, F13, E70, E71)
• Engine: N63 4.4L V8
• Cross-reference OEM: 11157646086 (right) and 11157646087 (left)

How do these hoses match OEM references and part numbers?

Each hose is produced to align with the original equipment dimensions and connection points listed by BMW. The right and left hoses correspond to specific OEM catalog numbers and several aftermarket cross-references, helping you confirm the correct replacement before purchase.

• Right hose references: 11157646086, 11-15-7-646-086 and related cross-codes
• Left hose references: 11157646087, 11-15-7-646-087 and related cross-codes
• Compare product photos and your vehicle’s OEM numbers or VIN to ensure fitment

What should I expect when installing these PCV/crankcase vent hoses?

Installation typically involves removing the old, cracked or hardened hoses and connecting the new lines at the valve cover and crankcase ports. Fitment is designed to be direct; however, inspecting clamps, seals and adjacent components during replacement is advised. The set includes both left and right hoses so both banks can be serviced at once.

• Sold as a matched left and right set for cylinders 1–4 and 5–8
• Aftermarket, 100% new components—inspect for secure clips and seals
• Recommended to replace worn clamps and check adjacent vacuum lines

How long is the warranty and can you verify fitment for my car?

OKAY MOTOR provides a one-year service/maintenance coverage from the purchase date. For peace of mind, the seller requests your VIN to double-check compatibility and ensure you receive the correct left/right hoses for your vehicle variant.

• 1-year maintenance/service from purchase date
• VIN verification available—send VIN to confirm fitment
• Advice: cross-reference OEM numbers and product photos before ordering

Who is this for: This OKAY MOTOR crankcase vent hose set is intended for BMW owners, independent mechanics and restoration shops working on N63-equipped 550i, 650i, 750i, X5, X6 and Alpina B7 vehicles who need a direct-fit, new aftermarket replacement. It’s appropriate when original vent hoses show cracking, oil seepage, hardening or when replacing both banks during routine maintenance. If you want parts matched to OEM references with seller-backed VIN confirmation and a one-year service window, this pair is a practical choice.