Gates 12454 Exhaust Gas Recirculation (EGR) Cooler Hose
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Gates
 Molded Heater Hose

Gates 12454 Exhaust Gas Recirculation (EGR) Cooler Hose

Brand Gates 12454
Material Epdm
End 1 Inside Diameter .3
End 1 Inside Diameter 8
End 2 Inside Diameter .3
End 2 Inside Diameter 8
Centerline Length 118
Centerline Length 4.65
Branch Quantity 0
9839 Yes
9845 0
Product line Molded Heater Hose
Fits Lexus and Toyota · 9 vehicles

Factory-molded design. OEM-style hose fits tight engine compartments with a precise shape.

EPDM construction. Built for coolant, water, and air applications, including marine use.

Molded heater hose. A flexible hose for EGR cooler and coolant routing needs.

Cross-references Gates 12454, OSC 13454 and 1629731060 for the same application. See all 4.

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Free returns within 60 days if it doesn't fit when fitment is verified.
Not what you need? See all Exhaust Gas Recirculation (EGR) Cooler Hose options

Gates 12454 Molded EGR Cooler Hose

Gates 12454 is a factory-molded, OEM-style coolant hose built for tight engine bays and emission control routing. It is made from EPDM and sized for small I.D. connections, making it a direct-fit solution for EGR cooler hose service on select Toyota and Lexus applications.

Key Features

  • Factory-molded shape for precise routing in compact engine compartments
  • EPDM construction for coolant, water, and air service
  • Small inside diameter: 8 mm (0.3 in) at both ends
  • Centerline length: 118 mm (4.65 in)
  • OEM-style replacement for emission control and cooling system routing
  • Approved for marine applications

Product Details

This Gates molded heater hose is part of the Molded Heater Hose line, which focuses on OE-style formed hoses for modern vehicles with tighter packaging around the engine. Gates 12454 is used as an Exhaust Gas Recirculation (EGR) cooler hose and is built to follow the original routing path, helping maintain proper connection alignment between the EGR cooler and EGR valve. It is a direct replacement for select 2020-2022 Lexus RX450h and RX450hL models, and 2017-2019 Toyota Highlander applications. This part cross-references OSC 13454 for the same application.

What It Helps Address

  • Cracked or aged EGR cooler hose material
  • Coolant seepage at molded hose connections
  • Improper hose routing in tight engine compartments
  • Heat-related hose hardening or deformation
  • Emission system service on Lexus RX450h, RX450hL, and Toyota Highlander models

Installation Notes and Tips

Verify hose routing, end diameters, and centerline length before installation. This hose is intended for molded replacement use where the original shape and connection points matter, especially on EGR cooler to EGR valve routing. Confirm vehicle application by year and model: Fits 2020-2022 Lexus RX450h, N/A; Fits 2020-2022 Lexus RX450hL, N/A; Fits 2017-2019 Toyota Highlander, N/A.

Quality Assurance

Gates is known for OE-style hose engineering and application-specific fitment across cooling and emission control systems. Part number 12454 is built to match the molded configuration needed for select Lexus RX450h, RX450hL, and Toyota Highlander service applications.

Related reading

This part fits 9 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersFuel TypeNotes
2022LexusRX450h3.5LV6FULL HYBRID EV-GAS (FHEV)Exhaust Gas Recirculation Cooler To Exhaust Gas Recirculation Valve; Molded Heater Hose
2022LexusRX450hL3.5LV6FULL HYBRID EV-GAS (FHEV)Exhaust Gas Recirculation Cooler To Exhaust Gas Recirculation Valve; Molded Heater Hose
2021LexusRX450h3.5LV6FULL HYBRID EV-GAS (FHEV)Exhaust Gas Recirculation Cooler To Exhaust Gas Recirculation Valve; Molded Heater Hose
2021LexusRX450hL3.5LV6FULL HYBRID EV-GAS (FHEV)Exhaust Gas Recirculation Cooler To Exhaust Gas Recirculation Valve; Molded Heater Hose
2020LexusRX450h3.5LV6FULL HYBRID EV-GAS (FHEV)Exhaust Gas Recirculation Cooler To Exhaust Gas Recirculation Valve; Molded Heater Hose
2020LexusRX450hL3.5LV6FULL HYBRID EV-GAS (FHEV)Exhaust Gas Recirculation Cooler To Exhaust Gas Recirculation Valve; Molded Heater Hose
2019ToyotaHighlander3.5LV6FULL HYBRID EV-GAS (FHEV)Molded Heater Hose
2018ToyotaHighlander3.5LV6FULL HYBRID EV-GAS (FHEV)Molded Heater Hose
2017ToyotaHighlander3.5LV6FULL HYBRID EV-GAS (FHEV)Molded Heater Hose
Directly replaces or cross-references 4 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Gates — 12454OSC — 134541629731060F10624