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URO 17117521781 Radiator Flow Adjustment ScrewOE Quality 60-Day Returns
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Part #: 17117521781

URO 17117521781 Radiator Flow Adjustment Screw

⚙️ 81 vehicles fit this part
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✅OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: BMW, 128i, 135i, 135is, 325i, 325xi, 328i, 328i xDrive, 328xi, 330i, 330xi, 335d, 335i, 335i xDrive, 335is, 335xi, X1, and Z4
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Radiator Flow Adjustment Screw for BMW Cooling Systems

This URO radiator flow adjustment screw is built to factory radiator drain plug dimensions for a direct bolt-on replacement and leak-free operation. It is a fitment-specific cooling system hardware part for select BMW models, including BMW Z4, BMW X1, BMW 128i, BMW 135i, BMW 328i, and BMW 335i applications.

Key Features

  • Direct-fit radiator flow adjustment screw for OE-style cooling system service
  • Manufactured to factory radiator drain plug dimensions for accurate installation
  • Corrosion-resistant, high-strength POM construction
  • Black finish
  • Quality control performed during production
  • OE part/casting number 17 11 7 521 781
  • Part number 17117521781 for BMW cooling system replacement searches

Detailed Description

URO part number 17117521781 is a radiator flow adjustment screw designed for BMW cooling system service where the factory drain plug or flow adjustment component needs replacement. The POM material and OE-matched dimensions support reliable sealing at the cooling system temperatures specified by the vehicle manufacturer. This part cross-references URO-016078 for the same application. For buyers searching BMW radiator drain plug replacement, BMW cooling system hardware, or 17117521781 fitment, this component matches the factory-style design used on select BMW Z4, BMW X1, BMW 128i, BMW 135i, BMW 328i, and BMW 335i models.

What It Helps Address

  • Coolant seepage at the radiator drain plug area
  • Damaged or worn factory flow adjustment screw threads
  • Improper sealing after cooling system service
  • Replacement needs for BMW radiator drain plug hardware
  • Restoration of OE-style cooling system closure on select BMW models

Installation Notes and Tips

Verify the OE part number and radiator drain plug dimensions before installation. Clean the sealing surface and inspect the surrounding radiator fitting for wear, cracking, or debris before threading in the new screw. Confirm the cooling system is properly filled and checked for leaks after service. Compatible With 2009-2016 BMW Z4, 2013-2015 BMW X1, 2008-2013 BMW 128i, 2008-2013 BMW 135i, 2013 BMW 135is, 2007-2013 BMW 328i, 2009-2013 BMW 328i xDrive, 2007-2013 BMW 335i, 2009-2013 BMW 335i xDrive, 2011-2013 BMW 335is, 2009-2011 BMW 335d, 2007-2008 BMW 328xi, 2007-2008 BMW 335xi, 2006 BMW 325i, 2006 BMW 325xi, 2006 BMW 330i, and 2006 BMW 330xi.

Quality Assurance

URO manufactures this radiator flow adjustment screw with quality control at each step of production. It is backed by a 24 Month Unlimited Mileage Warranty.

BrandURO
Part Number17117521781
MaterialPom
ColorBlack
OE Part/Casting Number17 11 7 521 781

This part fits 81 vehicles. Search below:

YearMakeModelSubmodelBody TypeTransmissionPositionNotes
2016BMWZ4sDrive28iAutomaticN/A
2016BMWZ4sDrive35iAutomatic Dual ClutchN/A
2016BMWZ4sDrive35isN/A
2015BMWX1N/A
2015BMWZ4sDrive28iAutomaticN/A
2015BMWZ4sDrive35iAutomatic Dual ClutchN/A
2015BMWZ4sDrive35isN/A
2014BMWX1N/A
2014BMWZ4sDrive28iAutomaticN/A
2014BMWZ4sDrive35iAutomatic Dual ClutchN/A
2014BMWZ4sDrive35isN/A
2013BMW128iAutomaticN/A
2013BMW135iAutomatic Dual ClutchN/A
2013BMW135isAutomatic Dual ClutchN/A
2013BMW328iConvertibleAutomaticN/A
2013BMW328iCoupeAutomaticN/A
2013BMW328i xDriveCoupeAutomaticN/A
2013BMW335iConvertibleAutomaticN/A
2013BMW335iCoupeAutomaticN/A
2013BMW335i xDriveCoupeAutomaticN/A
2013BMW335isAutomatic Dual ClutchN/A
2013BMWX1N/A
2013BMWZ4sDrive28iAutomaticN/A
2013BMWZ4sDrive35iAutomatic Dual ClutchN/A
2013BMWZ4sDrive35isN/A
2012BMW128iAutomaticN/A
2012BMW135iAutomatic Dual ClutchN/A
2012BMW328iConvertibleAutomaticN/A
2012BMW328iWagonAutomaticN/A
2012BMW328iCoupeAutomaticN/A
2012BMW328i xDriveAutomaticN/A
2012BMW335iConvertibleAutomaticN/A
2012BMW335iCoupeAutomaticN/A
2012BMW335i xDriveAutomaticN/A
2012BMW335isAutomatic Dual ClutchN/A
2012BMWZ4sDrive28iAutomaticN/A
2012BMWZ4sDrive35iAutomatic Dual ClutchN/A
2012BMWZ4sDrive35isN/A
2011BMW128iAutomaticN/A
2011BMW135iAutomatic Dual ClutchN/A
2011BMW328iAutomaticN/A
2011BMW328i xDriveAutomaticN/A
2011BMW335dN/A
2011BMW335iAutomaticN/A
2011BMW335i xDriveAutomaticN/A
2011BMW335isAutomatic Dual ClutchN/A
2011BMWZ4sDrive30iAutomaticN/A
2011BMWZ4sDrive35iAutomatic Dual ClutchN/A
2011BMWZ4sDrive35isN/A
2010BMW128iAutomaticN/A
2010BMW135iAutomaticN/A
2010BMW328iAutomaticN/A
2010BMW328i xDriveAutomaticN/A
2010BMW335dN/A
2010BMW335iAutomaticN/A
2010BMW335i xDriveAutomaticN/A
2010BMWZ4sDrive30iAutomaticN/A
2010BMWZ4sDrive35iAutomatic Dual ClutchN/A
2009BMW128iAutomaticN/A
2009BMW135iAutomaticN/A
2009BMW328iAutomaticN/A
2009BMW328i xDriveAutomaticN/A
2009BMW335dN/A
2009BMW335iAutomaticN/A
2009BMW335i xDriveAutomaticN/A
2009BMWZ4sDrive30iAutomaticN/A
2009BMWZ4sDrive35iAutomatic Dual ClutchN/A
2008BMW128iAutomaticN/A
2008BMW135iAutomaticN/A
2008BMW328iAutomaticN/A
2008BMW328xiAutomaticN/A
2008BMW335iAutomaticN/A
2008BMW335xiAutomaticN/A
2007BMW328iAutomaticN/A
2007BMW328xiAutomaticN/A
2007BMW335iAutomaticN/A
2007BMW335xiAutomaticN/A
2006BMW325iAutomaticN/A
2006BMW325xiAutomaticN/A
2006BMW330iAutomaticN/A
2006BMW330xiAutomaticN/A

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

17 11 7 521 78117117521781URO-016078

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.