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Buick Regal A/C Refrigerant Liquid Hoses

Buick Regal A/c refrigerant liquid hoses

Starting at $22.95, AutoBuffy stocks 5 A/C refrigerant liquid hoses from GPD and Four Seasons to fit the Buick Regal. The liquid hose carries high-pressure liquid refrigerant from the condenser to the expansion valve or orifice tube. A cracked or leaking hose causes refrigerant loss, dropping cooling capacity and risking compressor damage if left unaddressed.

Signs your Buick Regal needs a new A/C refrigerant liquid hose

  • Warm or room-temperature air blowing from vents even when A/C is set to maximum cold
  • Visible oily residue or staining along the hose body, at crimp fittings, or near connection points — refrigerant oil coats leaks as it escapes
  • Hissing or bubbling sound from the engine bay when the A/C compressor is running
  • A/C clutch cycling on and off rapidly or failing to engage, indicating low system pressure caused by refrigerant loss
  • Frost or ice buildup on the hose itself or at the connection to the expansion valve, signaling a restricted or partially collapsed inner lining
  • Failed A/C system pressure test or a low-side and high-side pressure reading outside the normal operating range during a professional evacuation and recharge

Which A/C refrigerant liquid hose should you buy for your Buick Regal?

The liquid hose on your Buick Regal is a high-pressure line, so material quality and fitment precision matter more than on low-pressure hoses. Your main decisions are OE-style direct-fit versus universal, and whether you need a factory-crimped assembly or a hose-and-fitting kit. Always verify the connection type — O-ring face seal (ORFS) vs. block-style fitting — before ordering.

OE Direct-Fit Assembly
Best for
Fastest, cleanest installation with no modifications
What you get
Pre-crimped hose cut to factory length with correct end fittings; drops in exactly like the original
OEM-Equivalent Aftermarket
Best for
Cost-conscious owners who still want a complete bolt-on part
What you get
Same form and function as the factory hose at a lower price point; sourced from suppliers that make parts for vehicle assembly lines
Barrier-Type Refrigerant Hose (bulk/cut-to-length)
Best for
Custom routing repairs or when the factory assembly is discontinued
What you get
Low-permeation nylon inner barrier rated for R-134a and R-1234yf; requires separate fittings and a professional crimping tool
Heavy-Duty / High-Performance Hose
Best for
High-output A/C systems, fleet vehicles, or extreme-heat climates
What you get
Thicker wall construction, higher burst and working pressure ratings, and heat-resistant outer jacket for longer service life under heavy cycling

A/c refrigerant liquid hoses brands we stock for your Buick Regal

GPD
4 options · from $22.95
Four Seasons
1 option · from $81.95

Replacing the A/C refrigerant liquid hose on a Buick Regal

Advanced⏱ 1–2 hours (plus refrigerant recovery and recharge time)A/C manifold gauge setRefrigerant recovery/evacuation/recharge machine (EPA 609 certification required)Line-disconnect or spring-lock coupling tools (if applicable to your Buick Regal)Flare-nut or crowfoot wrench setNew O-rings and refrigerant-compatible O-ring lubricant

Have a certified technician recover all refrigerant from the Buick Regal's A/C system before opening any line. With the system depressurized, remove the retaining clips or disconnect fittings at each end of the liquid hose, taking care not to damage adjacent lines or the condenser outlet tube. Install the new hose with fresh O-rings lightly coated in refrigerant oil, torque the fittings snugly by hand then with a flare-nut wrench — do not overtighten — then have the system evacuated and recharged to restore proper operation.

Frequently asked questions

How much does it cost to replace A/C refrigerant liquid hoses on a Buick Regal?
Parts start at $22.95 for the Buick Regal at AutoBuffy. Add shop labor of roughly one to two hours and the mandatory refrigerant evacuation and recharge service, which most shops charge separately. Doing the hose replacement yourself saves on labor but requires EPA-certified refrigerant handling equipment.
Can I drive my Buick Regal with a leaking A/C refrigerant liquid hose?
You can drive short distances, but it is not recommended. A leaking liquid hose slowly depletes refrigerant, and once pressure drops too low the compressor can run without adequate lubrication — leading to compressor seizure, a far more expensive repair. Stop using the A/C and have the hose replaced promptly.
How long does an A/C refrigerant liquid hose last on a Buick Regal?
Most factory liquid hoses last roughly ten to fifteen years or longer under normal conditions. Failure is accelerated by heat cycling, ozone exposure, and contact with engine fluids that degrade the outer jacket. Rubber hoses typically crack or harden with age; inspect the hose any time the A/C system is opened for other service.
Do I need to evacuate and recharge the A/C system when replacing the liquid hose on a Buick Regal?
Yes. Opening any refrigerant line releases the entire charge. Before replacing the hose, a certified technician must recover the remaining refrigerant with an approved machine. After installation the system must be evacuated under vacuum to remove moisture, then recharged to the specification listed on your Buick Regal's underhood label.
How do I find the right liquid hose for my Buick Regal — are there multiple positions?
Some Regal applications use more than one liquid-line segment, particularly when a rear-seat A/C evaporator or a remote condenser is involved. Confirm the specific routing position — condenser-outlet to expansion device being the most common — by using AutoBuffy's year-make-model filter and cross-referencing the part number with your existing hose's end fittings and overall length.
What is the difference between an A/C liquid hose and a suction hose on a Buick Regal?
The liquid hose carries high-pressure liquid refrigerant from the condenser outlet to the metering device and has a smaller inner diameter and higher pressure rating. The suction hose carries low-pressure refrigerant vapor from the evaporator back to the compressor. They are not interchangeable — always replace each line with the correct part for its position.

Shop a/c refrigerant liquid hoses by year for the Buick Regal

200420032002200120001999199719961995199419931992199119901989

More parts for your Buick Regal

Control Arm & Ball Joint AssemblyStrut BellowsAlternator Brush SetTraction Control SwitchDrive Motor Battery Pack Cooling Fan AssemblyEngine Timing DamperDoor Hinge Pin and Bushing KitEngine Balance Shaft Chain Guide

A/c refrigerant liquid hoses for other Buick models

Buick LeSabreBuick Park AvenueBuick EnclaveBuick TerrazaBuick CenturyBuick Rainier