Air Conditioning Bypasses of 2025
Best Choice1
MudderMudder R410a Valve Core Remover Tool 7 Air Conditioning Refrigerant Angled Compact Ball Valve Compatible with SAE 1/4 and 5/16 Port R410 R32 Brass Adapter 20 Cores 10 Brass Nut 270 Sealing Washer
Main highlights- Valve core remover: the bottom base of the valve core remover has a spherical handle, a metal cap, and a built-in magnet for the wick tool; It is suitable for 1/ 4 and 5/ 16 double sizes, which can be adapted to R22/ R134A/ R410/ R32/ R12 air conditioners, with an external bypass port design; The core tool can be inserted into the inner valve to control the core without stopping the machine or releasing the refrigerant; The core can be easily removed and installed
- Quality material: valve core remover installation tool set is made of brass, durable and not easy to rust; Besides, the metal knob features non-slip design, easy to operate and install, strong sealing, durable and safe
- Nice combination: there are 1 piece R134A valve core remover, 1 piece R410 R32 brass adapter, 20 pieces valve cores and 10 pieces brass nuts, 3 pieces R12 R134a R410A automotive refrigeration and air conditioning ball valves and 4 pieces copper adapters, 270 pieces green sealing ring, 309 pieces in total; Convenient to use, saves time and effort, and brings convenience to your life
- Mini split system adapter: convert the 5/ 16 inch inflation vacuum port (R410a type) to accept 1/ 4 inch instrument hose kit, 1/ 4 inch male x 5/ 16 inch female adapter; This connector has a thimble, which does not open the core tube of the air conditioner during operation, thus solving the problem of leakage; It is suitable for refrigerant R134a, R410A, R22 and R12 charging hoses or manifolds; HV, automotive air conditioning maintenance necessary tools
- Angled ball valve: 45 degrees angle manual shut-off valve with 1/ 4 inch male and female connector; The coupling nut is deep knurled, which can be quickly tightened by hand, the maximum working pressure is 800 psi (55 bar), and the minimum burst pressure is 4000 psi (276 bar)
9.7Exceptional
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Value for Money2
HitachiHitachi ABV0048 Idel Air Control Bypass Valve
Main highlights- SUPPORT: Hitachi Astemo's commitment to innovation and quality are unsurpassed. Likewise, is our commitment to product support. Please check the cross reference compatibility for your vehicle using the Amazon part selection tool located above the product images.
- SUPERIOR: Hitachi Astemo is a Tier 1 OE supplier for Idel Air Bypass Control Valves.
- QUALITY: High quality materials ensure that even under the most extreme conditions, Hitachi’s ABVs will not deform or malfunction.
- PERFORMANCE: 100% air flow tested for ideal performance and are calibrated for each application. Performs like OE to ensure quality you can depend on, right out of the box.
- ASSURANCE: 100% New, never remanufactured. No product wears the Hitachi logo until it has been carefully designed, precisely manufactured, and rigorously tested.
9.6Exceptional
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3
KeflyKefly Automobile Integrated 4-Way Heating Water Manual Control Valve, Brass Car Heater Air Conditioning bypass Valve, 4-Way shaped hose barb ball valve 3/4in(19mm)
Main highlights- 【Two manual control modes】The 4-way automotive heater valve provides 2 manual control modes. Close the valve in winter to allow water to circulate normally from the engine compartment to the driver's compartment and through the heater, ensuring a warm and comfortable interior. Open the valve in summer to stop water circulation and prevent unnecessary heating.
- 【Our Commitment】Provide 2 years warranty. If you have any questions or concerns about our products, please feel free to contact us by e-mail, we will respond to your questions within 24 hours to provide you with a satisfactory solution!
- 【High quality material】4-way Automobile Heater Valve solid brass valve body and plating handle, solid wear-resistant, not easy to deform, longer service life, both high temperature resistance, suitable for high-temperature coolant environment.
- 【Functional Application】Heated water valve is specially designed for automobile air conditioning system, it can improve cooling effect and reduce fuel consumption. The working temperature range of the valve is from -4℉ to 305℉ and the working pressure is 1.6Mpa.
- 【Easy to use】Features one-piece construction with no screw fixings to ensure a good sealing capability and can be connected to a hose with an internal diameter of 5/8 inch (16 mm), preferably using a clamp and tightening the clamp as much as possible to prevent leakage.
9.5Excellent
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4
MuzzysMUZZYS A/C HACK KIT Fits: Ram 2019 2020 2021 2022 1500 2500 3500 Trucks with Weak/Warm Air Conditioning from Factory, Heater Core Blend Door By-Pass Mod Fix, W/Clamps Hose Shut Off Valve, Gas & Diesel
Main highlights- This kit installs in minutes without making any permanent mods to your truck. It is 100% safe for your truck and won't cause any damage or Engine Lights. This kit is comprised of premium components that will not fail.
- There is a known defect in these new trucks. The blend door in the dash allows hot air via the heater core into the HVAC system when the AC is on. There is a service bulletin to address this and it requires them to rip your entire dash out to replace the HVAC system. I guarantee you will have damage and problems down the road if you allow them to do this plus there are many reports that it does not even fix the problem! This is an easy fix that is guaranteed to make your A/C blow 8°-15° cooler!
- Muzzys premium A/C hack mod kit. Fits: Ram 1981-2019, 2020, 2021, 2022, 2023, 2024, 2025, 1500, 2500, 3500, gas, and diesel trucks with weak and or warm A/C from the factory. Fix the design defect they refuse to fix yourself!
- Gas trucks-**See Photo 4**Install the valve at the water pump on the front of the motor on the heater supply hose. Find the hose labeled "Eng Out" and remove it. Install this valve to the hose you removed and connect the supplied hose to the valve and the water pump. Install clamps as shown in the photos. Top off coolant, you will lose some when you initially removed the hose from the water pump.
- Diesel trucks- **See Photo 5** Install the valve on the heater supply line above the turbo. See Photo 5 to determine exact location to install the valve. Remove the heater supply line from the black tube coming from the motor. Install this valve to the hose you removed and connect the included hose to the valve and black tube and install the clamps as shown in the photos. Top off your coolant, you will lose a small amount when you remove the line.
9.4Excellent
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5
UenedeUenede Solid Brass 5/8 Inch Heater Control Valve, Car Heater Air Conditioning Ball Valve with Switch 5/8" Hose Barb Automotive Heater Bypass Valve Fitting
Main highlights- 【Solid Connection】The 4-Way shaped hose barb ball valve can be solid connected to the hose (Fit hose which ID of 16mm). Keep the hose incision flat. It is better to use with clamps. Tighten clamps as tightly as possible to prevent leakage.
- 【Solid Brass】The valve is made of solid brass, which is strong and not easily corroded, suitable for long time use. Heavy duty brass valve and thickened wall, higher strength and very rugged.
- 【Package Include】1PCS 5/8"OD Barb Heater Control Valve.
- 【Feel Better in Summer】Cold and warm air conditioning air is controlled by the duct control motor, is not felt when in cold weather. But when the weather is hot, because his warm air is not closed tightly, some warm air will go to the cold air, which will affect the cooling effect, and the fuel consumption will increase obviously. After installing the warm water valve, the warm water inside and outside will not circulate, and the temperature of the warm water tank in the cab will naturally drop.
- 【Application】The bypass valve can control 4 channels respectively to form 2 different flow directions. Widely used in pneumatic system, such as propane gas air hose, fuel line. It can also be used in the reconstruction of automobile heating valve. The purpose of this valve is that the warm water from the control valve is sent to the warm water tank in the cab.
9.3Excellent
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6
FaradyFarady Automobile Integrated 4-Way Heating Water Manual Control Valve Solid Brass Car Heater Air Conditioning Ball Valve with 4 Clamps 5/8"(16mm)
Main highlights- 【Worry Free Service】When you receive our heating water valve, if you have any dissatisfaction, please feel free to contact us. We will help you solve the problem within 24 hours until you are satisfied. Package Included: 1 x heating water valve, 4 x clamps.
- 【Solid Connection】The heater valve can be securely connected to a hose, suitable for hoses with an inside diameter of 5/8 inches (16 mm), preferably using a clamp and tightening the clamp as much as possible to prevent leakage. Operating temperature: - 20-150℃. Working pressure: 1.6Mpa.
- 【Multifunctional Manual Control】The 4-way automobile heater valve provides 2 modes of manual control. In winter, close the valve to allow water to circulate normally from the engine compartment to the driver's compartment, ensuring a warm and cozy interior. In summer, open the valve to stop water circulation and prevent unnecessary heating.
- 【Application】The 4-Way shaped hose barb ball valve is specially designed for automotive air conditioning systems to improve cooling efficiency and reduce fuel consumption in hot weather conditions, this flexibility allows it to be used in a variety of automotive air conditioning systems. (The connecting hose size may be different for different models of automobiles, the use of reducer hose barb fittings can meet different needs. 𝗣𝗹𝗲𝗮𝘀𝗲 𝘁𝗮𝗸𝗲 𝗰𝗮𝗿𝗲 𝘁𝗼 𝗺𝗲𝗮𝘀𝘂𝗿𝗲 𝘁𝗵𝗲 𝘀𝗶𝘇𝗲 𝗯𝗲𝗳𝗼𝗿𝗲 𝗽𝘂𝗿𝗰𝗵𝗮𝘀𝗶𝗻𝗴.)
- 【All Solid Brass】The bypass valve is made of solid full brass body and plated handle, strong, wear-resistant, anti-aging, high temperature resistant, not easy to deform, higher strength, very sturdy and durable, suitable for high temperature coolant environment.
9.1Excellent
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7
MudderMudder 7 Pieces Air Conditioning Refrigerant Angled Compact Ball Valve 1/4 Inch for R410A R134A R12 R22 HVAC and R410A Adapter 5/16 Inch Female to 1/4 Inch Male Flare for Mini Split System
8.2 Simple to use8.0 lasts a long time8.0 materials QualityWhy we love it
Comprehensive kit with multiple adapters and valves.
Durable brass alloy construction ensures longevity.
Suitable for various refrigerants and HVAC systems.
9.0Excellent
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8
MuzzysMuzzys UNIVERSAL A/C HACK KIT, Fits MOST Vehicles and ALL 5/8" and 3/4" ID Heater Hose systems. Repair cars and trucks with Weak/Warm Air Conditioning, Faulty Blend Door, Heater Core By-Pass Mod Fix.
Main highlights- This kit stops hot coolant from flowing to your heater core from the engine thus not allowing hot air to blend with the cold air behind the dash. This is often caused by a faulty blend door or simply a poor design from the vehicle manufacturer. This kit will NOT fix a non-functioning air conditioner. This kit simply blocks hot air from being introduced into a function air conditioning system. If you have a problem with hot air bleeding into your A/C system you can expect this kit to allow your A/C to blow 8°-15° cooler at the vents!
- This kit is 100% safe for your vehicle and won't cause any damage or Check Engine Lights. This kit is comprised of PREMIUM components that WILL NOT fail.
- This kit installs in minutes without making any permanent mods to your vehicle. NO HOSE CUTTING REQUIRED! With this kit you can control flow to your heater core with a turn of the handle!
- This kit fits all 5/8" and 3/4" heater hose systems which covers about 99% of all cars and trucks out there.
- This kit DOES fit 5/8" hoses. It does take a little M-A-N to get a 5/8" hose on the nipple, if you can't get it on you probabaly shouldn't be working on vehicles or perhaps you should get your wife to help you. A little soapy water might also help.
- This PREMIUM kit is MADE IN THE USA and includes: ONE Hi-Temp/Hi-Pressure Shut off Valve, ONE 4" Hi-Temp/Hi Pressure Heater Hose, THREE Stainless Steel Smooth Edge Band Clamps that WILL NOT cut into your hoses
- This Kit includes a 4" section of high quality heater hose so you do not need to cut or modify your OEM heater hose to install this valve. Install the supplied valve at the END of your OEM hose and then attach the valve and supplied 4" hose to your engine outlet. On some vehicles it will not be easily accessible to install this kit on the engine side of the heater inlet hose. If this is your case you can also install the bypass kit on the fitting at the firewall where the inlet hose attaches.
- Easy 5 Minute Install. Locate your heater core inlet hose. There will be two hoses coming from the firewall. One is the heater core "in" and the other is the "out". This kit MUST be installed on the "IN" hose. Follow the hoses from the firewall and install this kit on the other end. Remove the vehicle heater hose from the port on the engine and install the supplied hose, valve, and clamps. This kit can be installed on either end of the heater IN hose. SEE PHOTOS TO THE LEFT.
8.9Very Good
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9
Four Seasons20% OffFour Seasons 26775 Cap & Valve Air Conditioning System Seal Kit
Main highlights- Part number: 26775
- Package Weight: 0.014 kilograms
- Package Dimensions: 5.08 H x 2.54 L x 3.81 W (centimeters)
- Four Seasons 26775 Cap & Valve A/C System Seal Kit
8.8Very Good
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10
GMGM Parts Genuine 15-51251 Heating and Air Conditioning Control Valve
9.9 Temperature control9.7 lasts a long time8.0 Easy installationWhy we love it
Restores heating and AC performance effectively.
Perfect fit for 2010-2015 Chevrolet Camaro models.
High-quality, reliable, and durable GM OE part.
8.6Very Good
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