BMW & MINI Universal Billet Aluminium Cooling System Coolant Bleed Screw 1997 - 2019 (Replaces 11537793373 / 17111712788 / 17110141325)

Replace your fragile factory plastic coolant bleed screw with this premium billet aluminium upgrade, precision CNC-machined from aircraft-grade aluminium alloy for permanent durability and a refined engine bay aesthetic. The factory plastic coolant bleed screw on virtually every BMW and MINI cooling system is one of the most well-known weak points in the entire chassis — over time, the plastic becomes brittle from sustained heat exposure and breaks during routine cooling system service, often snapping off inside the radiator or expansion tank. When this happens, what should be a simple coolant bleed procedure becomes an expensive recovery job. This billet aluminium replacement permanently eliminates the failure mode with rigid metal construction that won't crack, snap, or strip during service. The 6mm Allen head design enables easy removal with a standard hex key — significantly faster and more reliable than the awkward cross-head factory design.

Features:

• Sturdy and durable construction – aircraft-grade billet aluminium alloy permanently eliminates the brittleness and snapping failures of the factory plastic bleed screw
• Direct OE replacement design – manufactured to factory specifications matching original equipment part numbers 11537793373, 17111712788, and 17110141325
• 6mm Allen head – easier and faster removal compared to the awkward cross-head factory design, using a standard hex key tool
• CNC machined precision – ensures perfect dimensional fitment to factory cooling system mounting points without modification
• Anodized surface finish – delivers corrosion and abrasion resistance with a clean, professional aesthetic that adds visual appeal to the engine bay
• Wide chassis compatibility – fits virtually the entire BMW and MINI lineup from 1997 onwards

Specifications:

• Condition: 100% Brand New
• Type: Cooling System Coolant Bleed Screw
• Material: Billet Aluminium Alloy
• Construction: CNC Machined
• Surface Finish: Anodized
• Head Type: 6mm Allen / Hex
• Item Weight: 0.012 kg
• Quantity: 1 piece per pack
• Position: Cooling System Bleed Port
• Purpose: Direct OE Replacement / Maintenance Upgrade

OE / Replacement Part Numbers:

• 11537793373 / 11 53 7 793 373
• 17111712788 / 17 11 1 712 788
• 17110141325 / 17 11 0 141 325

Fitment:

Compatible with virtually all BMW and MINI vehicles using factory bleed screw part numbers 11537793373 / 17111712788 / 17110141325. Verify your factory part number before ordering.

• BMW 1 Series: E81 / E82 / E87 / E88 / F20 / F21 (2003 – 2019)
• BMW 2 Series: F22 / F23 / F87 M2 (2012 – 2019)
• BMW 3 Series: E46 / E90 / E91 / E92 / E93 / F30 / F31 / F34 GT / G20 / G21 (1997 – 2019)
• BMW 4 Series: F32 / F33 / F36 Gran Coupé (2012 – 2019)
• BMW 5 Series: E39 / E60 / E61 / F07 GT / F10 / F11 / G30 / G31 (1997 – 2019)
• BMW 6 Series: E63 / E64 / G32 GT (2006 – 2019)
• BMW 7 Series: E38 / E65 / E66 / G11 / G12 (1997 – 2019)
• BMW 8 Series: G14 / G15 / G16 Gran Coupé (2018 – 2019)
• BMW X1: E84 (2008 – 2015)
• BMW X3: E83 / F25 (2003 – 2017)
• BMW X4: F26 (2013 – 2018)
• BMW X5: E53 / E70 / F15 / G05 / F85 X5 M (2000 – 2019)
• BMW X6: E71 / E72 Hybrid / F16 / G06 / F86 X6 M (2007 – 2019)
• BMW X7: G07 (2017 – 2019)
• BMW Z4: E85 / E86 / E89 / G29 (2002 – 2019)
• MINI: R55 Clubman / R56 / R57 Cabrio / R58 Coupé / R59 Roadster / R60 Countryman / R61 Paceman (2009 – 2016)
• Compatible with vehicles using factory bleed screw part numbers 11537793373 / 17111712788 / 17110141325 only – verify your factory part number before ordering

Contents:

• 1x Billet Aluminium Coolant Bleed Screw

Benefits:

• Permanently eliminates the snapping and stripping failures common to the factory plastic bleed screw – a known weak point that frustrates BMW and MINI owners during routine cooling system service
• Aluminium construction will not become brittle from heat cycling exposure, unlike the factory plastic alternative which degrades progressively
• 6mm Allen head design enables faster, cleaner cooling system bleeding service – easier removal and reinstallation compared to the awkward factory cross-head design
• Significant cost savings compared to the recurring expense of replacing failed plastic bleed screws or recovering snapped-off plastic from inside the cooling system
• Anodized finish maintains the premium aluminium appearance over long-term outdoor and engine bay heat exposure without fading or corrosion
• One-time permanent fix – replace the bleed screw once with this aluminium upgrade and never deal with the failure mode again for the lifetime of the vehicle
• Subtle but meaningful engine bay aesthetic upgrade – replaces a failure-prone plastic component with a clean machined aluminium piece
• Extremely wide cross-platform compatibility makes this an essential maintenance product for BMW and MINI enthusiasts managing multiple chassis or workshops servicing diverse BMW models

Installation Notes:

• Fitment verification required: Confirm your factory bleed screw part number is 11537793373, 17111712788, or 17110141325 before ordering – BMW uses different bleed screw configurations across some specific applications
• Allow the engine to fully cool before beginning bleed screw service – never remove the bleed screw on a hot or pressurized cooling system
• Locate the cooling system bleed port – typically on the radiator, expansion tank, or thermostat housing depending on chassis
• Carefully remove the existing factory bleed screw – take care if it is plastic and aged, as it may snap during removal. If it does snap, you may need professional cooling system service to recover broken pieces before installing the new aluminium screw
• Apply a small amount of coolant-compatible thread sealant or new O-ring (if applicable) before installing the new aluminium screw
• Tighten the new bleed screw to manufacturer-specified torque values – do not overtighten, which can damage the surrounding plastic housing
• Properly bleed the cooling system following factory procedure for your specific chassis
• Inspect for leaks at the bleed port after the cooling system reaches operating temperature
• Professional installation recommended if you are unfamiliar with cooling system service procedures
• If unsure about compatibility with your specific BMW or MINI variant, contact our team with your year, model, chassis code, and factory bleed screw part number before ordering

Warranty:

• 12-month standard warranty from date of purchase
• Contact our support team for assistance with any issues