HomeBelts and Cooling > Water Pump and Related ComponentsGates 42307BH Engine Water Pump
Part #: 42307BH

Gates 42307BH Engine Water Pump

Water Pump (Standard)
⚙️ 10 vehicles fit this part
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Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Water Pump (Standard)
🚗Fitment: Lexus, GS300 and IS300
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Reliable Cooling Solution for Lexus GS300 and IS300

The Gates Water Pump (Standard) 42307BH is engineered to maintain optimal engine temperature in Lexus GS300 and IS300 models. Designed with durable materials and precise specifications, this engine water pump supports efficient coolant circulation to protect your vehicle's engine from overheating.

Key Features of Gates Water Pump 42307BH

  • Housing made from cast aluminum for strength and corrosion resistance
  • Stamped steel impeller designed for reverse rotation to match engine requirements
  • Includes back housing for a complete water pump assembly
  • Single outlet design compatible with accessory belt drive style
  • Comes with gasket and o-ring to ensure proper sealing
  • Not timing belt driven, pulley and fan clutch not included

About the Gates Water Pump (Standard) Product Line

The Gates Water Pump (Standard) line offers dependable engine water pumps designed to meet OEM specifications for a variety of vehicles. This product line focuses on delivering reliable cooling system components that integrate seamlessly with existing engine configurations. The 42307BH model exemplifies this approach by combining durable cast aluminum housing with a stamped steel impeller, ensuring consistent performance for Lexus GS300 and IS300 engines.

Detailed Product Description

The Gates 42307BH engine water pump features a cast aluminum housing that provides a lightweight yet robust structure resistant to corrosion and heat. Its stamped steel impeller is engineered to rotate in reverse, matching the specific coolant flow requirements of Lexus GS300 and IS300 engines. The inclusion of the back housing enhances the assembly's durability and simplifies installation. This water pump operates with an accessory belt drive style and includes a single outlet for coolant flow. While the thermostat and housing, pulley, and fan clutch are not included, the pump comes with a gasket and o-ring to ensure a secure and leak-free fit.

Common Applications and Issues Addressed

  • Replacement for failing or leaking water pumps in Lexus GS300 and IS300
  • Resolves engine overheating caused by inefficient coolant circulation
  • Addresses coolant leaks due to worn seals or damaged pump housing
  • Prevents engine damage from overheating by maintaining proper coolant flow
  • Suitable for vehicles requiring accessory belt driven water pumps with reverse impeller rotation

Installation Notes and Tips

Ensure compatibility with Lexus GS300 and IS300 models before installation. The water pump includes a back housing, gasket, and o-ring, which should be installed carefully to prevent leaks. Since the pulley and fan clutch are not included, reuse existing components or source separately if needed. Follow manufacturer torque specifications and cooling system bleeding procedures to ensure optimal performance.

Quality Assurance and Warranty

Gates water pumps are manufactured to meet or exceed OEM standards, providing reliable performance and durability. The 42307BH model undergoes rigorous quality control to ensure proper fit and function. Please refer to Gates' official warranty policy for specific coverage details.

BrandGates
Part Number42307BH
PositionWater Pump (Standard)
Housing MaterialCast aluminum
Impeller MaterialStamped steel
Impeller RotationReverse
Includes Back HousingYes
Outlet Quantity1
Thermostat And Housing IncludedNo
ContentsWater pump w/ back housing, gasket, o-ring
Drive StyleAccessory belt
Fan Clutch IncludedNo
Pulley IncludedNo
Timing Belt DrivenNo

This part fits 10 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
2005LexusGS3003.0LL6GASN/AIncludes Back Housing; Water Pump (Standard)
2005LexusIS3003.0LL6GASN/AIncludes Back Housing; Water Pump (Standard)
2004LexusGS3003.0LL6GASN/AIncludes Back Housing; Water Pump (Standard)
2004LexusIS3003.0LL6GASN/AIncludes Back Housing; Water Pump (Standard)
2003LexusGS3003.0LL6GASN/AIncludes Back Housing; Water Pump (Standard)
2003LexusIS3003.0LL6GASN/AIncludes Back Housing; Water Pump (Standard)
2002LexusGS3003.0LL6GASN/AIncludes Back Housing; Water Pump (Standard)
2002LexusIS3003.0LL6GASN/AIncludes Back Housing; Water Pump (Standard)
2001LexusGS3003.0LL6GASN/AIncludes Back Housing; Water Pump (Standard)
2001LexusIS3003.0LL6GASN/AIncludes Back Housing; Water Pump (Standard)

* 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:

16100498768342307BH942307BHWP-9175

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