HomeBelts and Cooling > Accessory Drive Belt System ComponentsGates K030243 Serpentine Belt - Water Pump
Part #: K030243

Gates K030243 Serpentine Belt - Water Pump

Premium OE Micro-V Belt, Water Pump
51 vehicles fit this part
Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
Premium OE Micro-V Belt, Water Pump
Fitment: Buick, Cadillac, Pontiac, and Oldsmobile, Lucerne, DTS, DeVille, Bonneville, Seville, Aurora, and Eldorado
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Reliable Serpentine Belt for Buick, Cadillac, Oldsmobile, and Pontiac

The Gates Premium OE Micro-V Belt K030243 is engineered to meet original equipment specifications for select Buick, Cadillac, Oldsmobile, and Pontiac models. Designed for durability and consistent performance, this serpentine belt supports accessory drive systems with precision fit and reliable operation.

  • Top width options: 0.42 inch and 11 mm for accurate fitment
  • Effective length: 24.33 inches (618 mm) ensuring proper tension
  • Constructed with EPDM belt material for enhanced heat and wear resistance
  • Polyester cord material for strength and flexibility
  • 3-rib automotive v-ribbed belt design (Section K) for smooth power transmission
  • Outside circumference: 24.875 inches (632 mm) for precise compatibility

About the Gates Premium OE Micro-V Belt Line

The Premium OE Micro-V Belt line from Gates is designed to provide original equipment performance and fit. This product line focuses on delivering belts that match or exceed OE specifications, ensuring reliable operation in accessory drive belt systems. The K030243 serpentine belt is part of this line, offering consistent quality and durability for automotive applications.

Product Details and Specifications

This serpentine belt features a 3-rib design with a K cross section, optimized for automotive v-ribbed belt systems. The belt's EPDM material offers resistance to heat, ozone, and wear, extending service life. Polyester cords embedded within the belt provide tensile strength and flexibility, maintaining proper tension and alignment. The belt's dimensions, including a top width of 0.42 inch (11 mm) and an effective length of 24.33 inches (618 mm), ensure compatibility with specific vehicle models.

Compatible Vehicles and Applications

  • Buick Aurora
  • Buick Lucerne
  • Cadillac DeVille
  • Cadillac DTS
  • Cadillac Seville
  • Oldsmobile Aurora
  • Pontiac Bonneville
  • Cadillac Eldorado

This belt is designed for use in accessory drive belt systems, powering components such as the alternator, power steering pump, and air conditioning compressor.

Common Issues Addressed by This Serpentine Belt

  • Worn or cracked belts causing slipping or noise
  • Loss of proper tension leading to accessory malfunction
  • Heat and wear degradation reducing belt lifespan
  • Incorrect belt size causing improper fit and performance
  • Failure of original belt material under demanding conditions

Installation Notes and Tips

Ensure the belt routing matches the vehicle’s accessory drive diagram. Inspect pulleys and tensioners for wear before installation. Use proper tensioning tools to achieve manufacturer-recommended belt tension. Verify belt alignment to prevent premature wear. The K030243 belt’s dimensions and rib count must match the original belt specifications for optimal performance.

Quality Assurance and Warranty

The Gates Premium OE Micro-V Belt K030243 is manufactured to meet OE performance standards. Constructed with durable EPDM and polyester materials, it offers reliable service life under normal operating conditions. While specific warranty details are not provided here, Gates products typically come with manufacturer-backed quality assurance to support automotive maintenance needs.

BrandGates
Part NumberK030243
PositionPremium OE Micro-V Belt, Water Pump
Belt MaterialEPDM
Cord MaterialPolyester
Cord MaterialPolyester
Cross Section DesignationK
Effective Length24.33
Effective Length618
OE Comparison RatingOE Performance
Outside Circumference24.875
Outside Circumference632
Rib Quantity3
SectionK
Top Width.42
Top Width11
TypeAutomotive V-Ribbed Belt (Standard)
TypeAutomotive V-Ribbed Belt (Standard)
Washer Pump IncludedEPDM

This part fits 51 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
2011BuickLucerne4.6LV8GASWater PumpPremium OE Micro-V Belt
2011CadillacDTS4.6LV8GASWater PumpPremium OE Micro-V Belt
2010BuickLucerne4.6LV8GASWater PumpPremium OE Micro-V Belt
2010CadillacDTS4.6LV8GASWater PumpPremium OE Micro-V Belt
2009BuickLucerne4.6LV8GASWater PumpPremium OE Micro-V Belt
2009CadillacDTS4.6LV8GASWater PumpPremium OE Micro-V Belt
2008BuickLucerne4.6LV8GASWater PumpPremium OE Micro-V Belt
2008CadillacDTS4.6LV8GASWater PumpPremium OE Micro-V Belt
2007BuickLucerne4.6LV8GASWater PumpPremium OE Micro-V Belt
2007CadillacDTS4.6LV8GASWater PumpPremium OE Micro-V Belt
2006BuickLucerne4.6LV8GASWater PumpPremium OE Micro-V Belt
2006CadillacDTS4.6LV8GASWater PumpPremium OE Micro-V Belt
2005CadillacDeVille4.6LV8GASWater PumpPremium OE Micro-V Belt
2005PontiacBonneville4.6LV8GASWater PumpPremium OE Micro-V Belt
2004CadillacDeVille4.6LV8GASWater PumpPremium OE Micro-V Belt
2004CadillacSeville4.6LV8GASWater PumpPremium OE Micro-V Belt
2004PontiacBonneville4.6LV8GASWater PumpPremium OE Micro-V Belt
2003CadillacDeVille4.6LV8GASWater PumpPremium OE Micro-V Belt
2003CadillacSeville4.6LV8GASWater PumpPremium OE Micro-V Belt
2003OldsmobileAurora4.0LV8GASWater PumpPremium OE Micro-V Belt
2002CadillacDeVille4.6LV8GASWater PumpPremium OE Micro-V Belt
2002CadillacEldorado4.6LV8GASWater PumpPremium OE Micro-V Belt
2002CadillacSeville4.6LV8GASWater PumpPremium OE Micro-V Belt
2002OldsmobileAurora4.0LV8GASWater PumpPremium OE Micro-V Belt
2001CadillacDeVille4.6LV8GASWater PumpPremium OE Micro-V Belt
2001CadillacEldorado4.6LV8GASWater PumpPremium OE Micro-V Belt
2001CadillacSeville4.6LV8GASWater PumpPremium OE Micro-V Belt
2001OldsmobileAurora4.0LV8GASWater PumpPremium OE Micro-V Belt
2000CadillacDeVille4.6LV8GASWater PumpPremium OE Micro-V Belt
2000CadillacEldorado4.6LV8GASWater PumpPremium OE Micro-V Belt
2000CadillacSeville4.6LV8GASWater PumpPremium OE Micro-V Belt
1999CadillacDeVille4.6LV8GASWater PumpPremium OE Micro-V Belt
1999CadillacEldorado4.6LV8GASWater PumpPremium OE Micro-V Belt
1999CadillacSeville4.6LV8GASWater PumpPremium OE Micro-V Belt
1999OldsmobileAurora4.0LV8GASWater PumpPremium OE Micro-V Belt
1998CadillacDeVille4.6LV8GASWater PumpPremium OE Micro-V Belt
1998CadillacEldorado4.6LV8GASWater PumpPremium OE Micro-V Belt
1998CadillacSeville4.6LV8GASWater PumpPremium OE Micro-V Belt
1998OldsmobileAurora4.0LV8GASWater PumpPremium OE Micro-V Belt
1997CadillacDeVille4.6LV8GASWater PumpPremium OE Micro-V Belt
1997CadillacEldorado4.6LV8GASWater PumpPremium OE Micro-V Belt
1997CadillacSeville4.6LV8GASWater PumpPremium OE Micro-V Belt
1997OldsmobileAurora4.0LV8GASWater PumpPremium OE Micro-V Belt
1996CadillacDeVille4.6LV8GASWater PumpPremium OE Micro-V Belt
1996CadillacEldorado4.6LV8GASWater PumpPremium OE Micro-V Belt
1996CadillacSeville4.6LV8GASWater PumpPremium OE Micro-V Belt
1996OldsmobileAurora4.0LV8GASWater PumpPremium OE Micro-V Belt
1995CadillacDeVille4.6LV8GASWater PumpPremium OE Micro-V Belt
1995CadillacEldorado4.6LV8GASWater PumpPremium OE Micro-V Belt
1995CadillacSeville4.6LV8GASWater PumpPremium OE Micro-V Belt
1995OldsmobileAurora4.0LV8GASWater PumpPremium OE Micro-V Belt

* 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:

125559571257049912588412242K3MK243K325-03024335450163K2433K243AP3PK6163PK6183PK620403024240302475030243A-243K3K030243QJK3247

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