HomeHVAC > Hoses and PipesFour Seasons 65978 A/C Refrigerant Suction Hose
Part #: 65978

Four Seasons 65978 A/C Refrigerant Suction Hose

Hose Assembly
⚙️ 12 vehicles fit this part
🔍
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$41.83Free 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
📦Hose Assembly
🚗Fitment: Lexus, RX450h and RX450hL
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Reliable A/C Refrigerant Suction Hose for Lexus RX450h Models

The Four Seasons Hose Assembly 65978 is designed specifically for Lexus RX450h and RX450hL models, providing a durable and efficient solution for your vehicle's HVAC system. Crafted from aluminum and rubber, this A/C refrigerant suction hose ensures proper refrigerant flow and system performance.

Key Features of Four Seasons Hose Assembly 65978

  • Constructed with aluminum and rubber materials for durability and flexibility
  • Compatible with R134a and R1234yf refrigerants
  • Includes gasket or seal for secure connections
  • Designed without a muffler or service port
  • Specifically engineered for Lexus RX450h and RX450hL models

About the Four Seasons Hose Assembly Product Line

The Four Seasons Hose Assembly line focuses on providing high-quality hose assemblies tailored for HVAC systems. This product line emphasizes reliable materials and precise fitment to maintain optimal refrigerant flow and system integrity. The 65978 hose assembly is part of this line, ensuring compatibility and performance for Lexus hybrid SUVs.

Detailed Product Description

The Four Seasons 65978 A/C refrigerant suction hose is constructed from a combination of aluminum and rubber, offering a balance of strength and flexibility necessary for the HVAC system in Lexus RX450h and RX450hL vehicles. It supports both R134a and R1234yf refrigerants, making it suitable for modern air conditioning systems. The included gasket or seal helps maintain a leak-free connection, while the absence of a muffler and service port reflects its specific design for direct refrigerant suction without additional components.

Common Applications and Issues Addressed

  • Replacement of worn or damaged A/C refrigerant suction hoses in Lexus RX450h and RX450hL
  • Resolving refrigerant leaks caused by hose degradation
  • Improving HVAC system efficiency by restoring proper refrigerant flow
  • Addressing issues related to incompatible or deteriorated hose materials
  • Maintaining system integrity when upgrading or servicing refrigerant types R134a or R1234yf

Installation Notes and Tips

Ensure the vehicle is depressurized and the A/C system is properly evacuated before removing the old hose. Verify compatibility with Lexus RX450h or RX450hL models prior to installation. Use the included gasket or seal to secure connections and prevent leaks. Avoid using hoses with mufflers or service ports if not specified for your vehicle’s system. Professional installation is recommended to maintain system performance and safety.

Quality Assurance and Warranty

Four Seasons products are manufactured to meet industry standards for HVAC components. The Hose Assembly 65978 undergoes quality checks to ensure durability and fitment accuracy. Warranty details should be confirmed with the product documentation or supplier, as coverage may vary.

BrandFour Seasons
Part Number65978
PositionHose Assembly
MaterialAluminum / rubber
Refrigerant TypeR134a r1234yf
Gasket Or Seal IncludedIncluded
Switch Service PortNo
Bracket?No
DescriptionHose assemblies
Muffler?W/o muffler
Service Port IncludedNo

This part fits 12 vehicles. Search below:

YearMakeModelPositionNotes
2022LexusRX450hN/ASuction Line; Hose Assembly
2022LexusRX450hLN/ASuction Line; Hose Assembly
2021LexusRX450hN/ASuction Line; Hose Assembly
2021LexusRX450hLN/ASuction Line; Hose Assembly
2020LexusRX450hN/ASuction Line; Hose Assembly
2020LexusRX450hLN/ASuction Line; Hose Assembly
2019LexusRX450hN/ASuction Line; Hose Assembly
2019LexusRX450hLN/ASuction Line; Hose Assembly
2018LexusRX450hN/ASuction Line; Hose Assembly
2018LexusRX450hLN/ASuction Line; Hose Assembly
2017LexusRX450hN/ASuction Line; Hose Assembly
2016LexusRX450hN/ASuction Line; Hose Assembly

* 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:

21238565978887040E2708870448310A66288

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