Gates
Premium OE Stretch Fit Micro-V Belt

Gates K040323SF Serpentine Belt - Air Conditioning

Brand Gates K040323SF
Position Air Conditioning
Belt Material EPDM
Cord Material Nylon
Cord Material Nylon
Cross Section Designation K
Effective Length 32.36
Effective Length 822
Installation Instructions Sheet A
Installation Tools Requirements Special Installation Tool
Instruction Manual Included Sheet A
OE Comparison Rating OE Exact
OE Comparison Rating OE Performance
Outside Circumference 32.875
Outside Circumference 835
Rib Quantity 4
Section K
Top Width .56
Top Width 14
Type Automotive V-Ribbed Belt (Stretch Fit)
Type Automotive V-Ribbed Belt (Stretch Fit)
Washer Pump Included EPDM
Product line Premium OE Stretch Fit Micro-V Belt
Fits BMW · 5 vehicles

OE exact replacement. Stretch-fit design with self-tensioning technology for proper performance.

EPDM belt material. Built for durable, reliable operation in accessory drive systems.

Nylon cord reinforcement. Adds strength and stability to the belt construction.

Cross-references Continental 4040340S, Dayco E040328 and 4K323SF for the same application. See all 6.

$38.91Free shipping
In stock · usually ships same day before 1pm CST
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Step 2 — Quantity
Order total $38.91
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.

Gates Stretch Fit Belt for BMW X5

The Gates K040323SF Premium OE Stretch Fit Micro-V Belt is built for stretch-fit accessory drive systems that require precise belt length and controlled tension. It is a direct-fit service part for the air conditioning drive on select 2009-2013 BMW X5 applications.

Gates’ Premium OE Stretch Fit Micro-V Belt line focuses on OE-style fit and proper operation on unique no-tensioner belt systems. The K040323SF uses a stretch-fit design with self-tensioning characteristics to match the requirements of these applications.

Key Features

  • Part number K040323SF
  • Premium OE Stretch Fit Micro-V Belt
  • Fits 2009-2013 BMW X5, air conditioning
  • 4-rib automotive V-ribbed belt design
  • EPDM belt material for accessory drive service
  • Nylon cord construction
  • Requires a special installation tool
  • OE Exact and OE Performance comparison ratings

Detailed Description

This Gates serpentine belt is engineered for stretch-fit drive systems where belt length and installation method are critical. The K040323SF is specified for the air conditioning position on 2009-2013 BMW X5 models, making it a focused replacement for BMW X5 air conditioning belt service. If you are searching for a BMW X5 serpentine belt, BMW X5 AC belt, or Gates K040323SF replacement, this part matches the listed application and belt configuration.

The belt uses EPDM construction and nylon cord reinforcement to support accessory drive operation in the intended application. Its 4-rib K-section profile and stretch-fit design are intended for systems that do not use a conventional automatic tensioner. This part cross-references Continental 4040340S and Dayco E040328 for the same application.

What This Belt Helps Address

  • Squealing or slipping from a worn air conditioning drive belt
  • Cracking, glazing, or fraying on the existing belt
  • Loss of proper belt tension in a stretch-fit system
  • Air conditioning drive service on a BMW X5
  • Replacement of a belt that no longer matches OE length or profile

Installation Notes and Tips

Installation requires a special installation tool, and the belt should be installed according to the included Sheet A instructions. Because this is a stretch-fit belt, correct routing and installation method are important for proper fitment on the BMW X5 air conditioning drive.

Quality Assurance

Gates positions this Premium OE Stretch Fit Micro-V Belt as an OE-style service part for unique stretch-fit drive systems. The K040323SF is built to meet the listed OE comparison ratings and application requirements for the specified BMW X5 fitment.

This part fits 5 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersFuel TypePositionNotes
2013BMWX53.0LL6DIESELAir ConditioningInstallation tool required for proper fitment.; Premium OE Stretch Fit Micro-V Belt
2012BMWX53.0LL6DIESELAir ConditioningInstallation tool required for proper fitment.; Premium OE Stretch Fit Micro-V Belt
2011BMWX53.0LL6DIESELAir ConditioningInstallation tool required for proper fitment.; Premium OE Stretch Fit Micro-V Belt
2010BMWX53.0LL6DIESELAir ConditioningInstallation tool required for proper fitment.; Premium OE Stretch Fit Micro-V Belt
2009BMWX53.0LL6DIESELAir ConditioningInstallation tool required for proper fitment.; Premium OE Stretch Fit Micro-V Belt
Directly replaces or cross-references 6 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Continental — 4040340SDayco — E0403284K323SF25-040323SF64557809801EB005