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17118666839/17118666840 Bracket | Structural Mounting System

17118666839/17118666840 Bracket | Structural Mounting System

17118666839/17118666840 Bracket Set for BMW Cooling Systems

17118666839/17118666840 Bracket Set - Engine Cooling System Stabilization

Precision-engineered for optimal radiator positioning, the 17118666839/17118666840 Bracket set maintains cooling system integrity through high-vibration driving conditions. These reinforced aluminum brackets feature corrosion-resistant anodization that withstands road salt and coolant exposure while providing structural reinforcement to radiator assemblies. Engineered mounting points align with chassis receivers using direct-bolt installation requiring no modification, with integrated cushioning buffers reducing harmonic vibrations transmitted to cooling components. Thermal expansion grooves accommodate dimensional changes during temperature fluctuations (+120°C to -30°C operational range), maintaining consistent tension on mounting hardware. Precisely angled mounting surfaces position radiators at factory-specified orientations to ensure optimal airflow through condenser fins. Rubber-isolated contact points prevent galvanic corrosion while dampening engine vibration frequencies between 10-500Hz.

Technical Specifications:
Primary OE: 17118666839 (Right) • 17118666840 (Left)
Alternate References: 17-11-8-666-83917 11 8 666 83917.11.8.666.83966683917-11-8-666-84017 11 8 666 84017.11.8.666.840666840
Material: Anodized Aluminum Alloy
Mounting System: Direct bolt-on installation
Temperature Threshold: -30°C to +120°C
Surface Treatment: Electrostatic Corrosion Protection
Weight: 0.62kg (Right) • 0.58kg (Left) ±3%
Package Includes: 1x Right Bracket • 1x Left Bracket
17118666839/17118666840 radiator bracket set
Precision-engineered radiator mounting brackets
17118666839/17118666840 installed position
Factory-positioned installation on radiator assembly

Structural Engineering and Vibration Management

The 17118666839/17118666840 Bracket system utilizes aircraft-grade aluminum alloys with ribbed reinforcement structures that distribute mechanical stresses across multiple load paths. CNC-machined mounting surfaces maintain ±0.2mm dimensional tolerance for precise radiator positioning, ensuring optimal clearance from rotating components and electrical wiring. Hydroformed reinforcement channels increase torsional rigidity by 42% compared to stamped equivalents, while vibration-damping elastomer inserts absorb harmonic frequencies between 10-500Hz. Electrophoretic coating provides comprehensive corrosion protection, with anodized surfaces resisting coolant degradation and road salt exposure. Precision-engineered mounting holes accommodate factory hardware without modification, while thermal expansion slots accommodate dimensional changes during extreme temperature transitions. The asymmetric design compensates for engine torque effects during acceleration and deceleration cycles.

Structural Reinforcement

Hydroformed rigidity channels

Vibration Control

Harmonic frequency dampening

Corrosion Resistance

Electrophoretic surface protection

Vehicle Compatibility Specifications

BMW 3 Series Models

  • F30 320i/328i/335i (2012-2019)
  • F30 320d/330d (2012-2019)
  • F31 Touring (2012-2019)
  • G20 330i/340i (2019-2024)
  • G21 Touring (2019-2024)
  • E90 325i/330i (2005-2012)
  • E91 Touring (2005-2012)

BMW 5 Series Models

  • F10 520i/528i (2010-2017)
  • F10 530d/535d (2010-2017)
  • F11 Touring (2010-2017)
  • G30 530i/540i (2017-2024)
  • G31 Touring (2017-2024)
  • E60 525i/530i (2003-2010)
  • E61 Touring (2003-2010)

BMW X Series Models

  • F15 X5 35i (2013-2018)
  • G05 X5 40i (2018-2024)
  • F16 X6 35i (2014-2019)
  • G06 X6 40i (2019-2024)
  • F26 X4 28i (2014-2018)
  • G02 X4 30i (2018-2024)
Referenced OE Numbers:
17118666839, 17118666840, 17-11-8-666-839, 17 11 8 666 839, 17.11.8.666.839, 666839, 17-11-8-666-840, 17 11 8 666 840, 17.11.8.666.840, 666840
Compatible with BMW 3 Series (E90/E91/F30/F31/G20/G21), 5 Series (E60/E61/F10/F11/G30/G31), X Series (F15/F16/F26/G05/G06/G02) vehicles requiring radiator bracket references 17118666839 and 17118666840

Materials

Dimensions

Care Instructions

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