HomeHVAC > Hoses and PipesGates 18334 HVAC Heater Hose - Inverter Drain Hose-1
Part #: 18334

Gates 18334 HVAC Heater Hose - Inverter Drain Hose-1

Molded Heater Hose, Inverter Drain Hose-1
⚙️ 8 vehicles fit this part
🔍
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$22.58Free Shipping
🚚Free ShippingNo Cost to Continental U.S.
🔄Free Returns*Wrong fit? No cost
🛡️60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
🔥
✅ In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
📦Molded Heater Hose, Inverter Drain Hose-1
🚗Fitment: Lexus and Toyota, Highlander and RX450h
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Reliable HVAC Heater Hose for Lexus and Toyota Vehicles

The Gates Molded Heater Hose 18334 is designed to provide durable and efficient heating system performance for select Lexus and Toyota models. Engineered with high-quality EPDM material, this molded heater hose ensures reliable heat transfer and long-lasting service in your vehicle's HVAC system.

  • Constructed from durable EPDM material for heat and chemical resistance
  • Molded design for precise fit and easy installation
  • Inside diameter of 0.31 inches (8 mm) on both ends
  • Centerline length of 16.9 inches (429 mm) for accurate fitment
  • Compatible with Lexus Highlander and Toyota RX450h models

About the Gates Molded Heater Hose Product Line

The Molded Heater Hose line by Gates focuses on delivering pre-formed hoses that match original equipment specifications. This product line is designed to simplify installation and ensure proper routing within the vehicle’s heating system. The molded construction reduces the risk of kinks and leaks, providing consistent coolant flow and heat transfer for optimal HVAC performance.

Detailed Product Description

The Gates Molded Heater Hose 18334 features EPDM rubber construction, known for its excellent resistance to heat, ozone, and automotive fluids. Both ends of the hose have an inside diameter of 0.31 inches (8 mm), making it suitable for precise connections within the heating system. With a centerline length of 16.9 inches (429 mm), this molded hose fits the specific routing requirements of Lexus Highlander and Toyota RX450h models. The molded design ensures a secure fit without the need for additional fittings or modifications.

Common Applications and Issues Addressed

  • Replacement of worn or cracked heater hoses in Lexus Highlander and Toyota RX450h
  • Resolving coolant leaks that affect HVAC heating performance
  • Preventing hose collapse or kinking that restricts coolant flow
  • Maintaining proper heat transfer for efficient cabin heating
  • Ensuring reliable operation of the vehicle’s heating system during cold weather

Installation Notes and Tips

Before installation, verify the hose length and diameter match your vehicle’s specifications. The molded design of the Gates 18334 heater hose allows for straightforward replacement without the need for additional fittings. Ensure all clamps are securely tightened to prevent leaks. It is recommended to inspect surrounding components for wear or damage during replacement to maintain overall HVAC system integrity.

Quality Assurance and Warranty

Gates manufactures the Molded Heater Hose 18334 to meet or exceed OEM standards, ensuring reliable performance and durability. The EPDM material provides resistance to heat and automotive fluids, contributing to a longer service life. Please refer to Gates’ official warranty policy for specific coverage details.

BrandGates
Part Number18334
PositionMolded Heater Hose, Inverter Drain Hose-1
MaterialEpdm
End 1 Inside Diameter.31
End 1 Inside Diameter8
End 2 Inside Diameter.31
End 2 Inside Diameter8
Centerline Length16.9
Centerline Length429
Branch Quantity0
9839Yes
98450
Centerline Length (in)16.9
Centerline Length (mm)429
MoldedYes
Number of Quick Connect Fittings0

This part fits 8 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
2014LexusRX450h3.5LV6ELECTRIC/GASInverter Drain Hose-1Molded Heater Hose
2013LexusRX450h3.5LV6ELECTRIC/GASInverter Drain Hose-1Molded Heater Hose
2013ToyotaHighlander3.5LV6ELECTRIC/GASInverter Drain Hose-1Molded Heater Hose
2012LexusRX450h3.5LV6ELECTRIC/GASInverter Drain Hose-1Molded Heater Hose
2012ToyotaHighlander3.5LV6ELECTRIC/GASInverter Drain Hose-1Molded Heater Hose
2011LexusRX450h3.5LV6ELECTRIC/GASInverter Drain Hose-1Molded Heater Hose
2011ToyotaHighlander3.5LV6ELECTRIC/GASInverter Drain Hose-1Molded Heater Hose
2010LexusRX450h3.5LV6ELECTRIC/GASInverter Drain Hose-1Molded Heater Hose

* 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:

1033414546S18334G923748020

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