2018 BMW M5 Air Conditioning Parts

Keep Your 2018 BMW M5 in Top Shape with Quality Air Conditioning Parts

Whether you’re repairing or upgrading your Air Conditioning Part, using high-quality parts is key to keeping your 2018 BMW M5 looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Expansion Valve and Orifice Tubes, AC High Pressure Side Switches, and AC Refrigerant Pressure Sensors. Whether you’re replacing a damaged part or enhancing your truck’s style and protection, you’ll find exactly what you need to get the job done right.

Competitive Prices and Extensive Inventory

The average price for a 2018 BMW M5 Air Conditioning Part at Advance Auto Parts is around $97.99, with a range that starts at $48.99 and goes up to $221.99. With 5 options in stock from 2 trusted brands, finding the right fit is easy. Popular picks like A/C Block Expansion Valve, A/C Block Expansion Valve, and AC Pressure Sensor start at just $48.99 and offer a great balance of form and function.

Explore Related Parts

While you’re upgrading or replacing your Air Conditioning Part, don’t forget to check out other key components like Engine Cooling Parts and HVAC Electrical Parts. At Advance Auto Parts, we’re here to help you keep your 2018 BMW M5 in peak condition, inside and out.

Essential 2018 BMW M5 Air Conditioning Parts

Carquest Premium – AC Pressure Sensor (Part No.ABA1128)

AC Pressure Sensor

from

$85.99
The Premium CarQuest Vehicle Solutions line of vehicle electronics are designed for OE form, fit and function for both import and domestic vehicles. The A/C Pressure Sensor reports system pressures to the on-board computer, in turn allowing the computer to properly and efficiently control the compressor, fans and system levels. An improperly functioning A/C Pressure Sensor will provide erratic or inaccurate readings to on-board computers severely affecting system performance and function. Without reliable and accurate data from a properly functioning A/C Pressure Sensor, on-board computers are unable to protect the safety of critical components and the system as a whole which can lead to excessive wear and tear on critical components and costly system damage.

Product Features:
  • Designed and manufactured with high quality materials, industry leading electronic components and strict quality controls. Engineered to exceed OE performance and to meet the uncompromising demands of service professionals.
  • Direct fit replacement matches proper OE fit, form, and function and ensures trouble free installation of your A/C Pressure Sensor.
  • All units are helium leak tested on fully automated mass spectrometer equipment before end-of-line testing.
  • All units are tested using automated end-of-line testing equipment that pressurizes the A/C Pressure Sensor and checks full-spectrum functionality and electrical output to ensure each A/C Pressure Sensor meets manufacturing specifications before packaging
See More

Carquest Premium – A/C Block Type Flange Expansion Valve (Part No.T39445)

A/C Block Type Flange Expansion Valve

from

$19.99
Carquest Expansion Valves are designed to regulate the flow of refrigerant through the air conditioning system to provide optimal cooling to the passenger compartment. Each expansion valve is manufactured to original equipment specifications to perform its function even in the harshest climates. Each part is supplied with the necessary gaskets and o-rings for installation.

Product Features:
  • The bodies of these expansion valves are machined from a single block of aluminum or brass metal.
  • Each expansion valve has settings for tonnage and superheat based on the vehicle specifications.
  • Each expansion valve is tested for function and leakage according to OEM specifications to ensure optimal performance of the air conditioning system.
  • O-Rings necessary for installation are included.
See More

Carquest Premium – A/C Block Expansion Valve (Part No.T39493)

A/C Block Expansion Valve

from

$55.99
Carquest Expansion Valves are designed to regulate the flow of refrigerant through the air conditioning system to provide optimal cooling to the passenger compartment. Each expansion valve is manufactured to original equipment specifications to perform its function even in the harshest climates. Each part is supplied with the necessary gaskets and o-rings for installation.

Product Features:
  • The bodies of these expansion valves are machined from a single block of aluminum or brass metal.
  • Each expansion valve has settings for tonnage and superheat based on the vehicle specifications.
  • Each expansion valve is tested for function and leakage according to OEM specifications to ensure optimal performance of the air conditioning system.
  • O-Rings necessary for installation are included.
See More

Carquest Premium – A/C Block Type O-Ring Expansion Valve (Part No.T39222)

A/C Block Type O-Ring Expansion Valve

from

$70.99
Carquest Expansion Valves are designed to regulate the flow of refrigerant through the air conditioning system to provide optimal cooling to the passenger compartment. Each expansion valve is manufactured to original equipment specifications to perform its function even in the harshest climates. Each part is supplied with the necessary gaskets and o-rings for installation.

Product Features:
  • The bodies of these expansion valves are machined from a single block of aluminum or brass metal.
  • Each expansion valve has settings for tonnage and superheat based on the vehicle specifications.
  • Each expansion valve is tested for function and leakage according to OEM specifications to ensure optimal performance of the air conditioning system.
  • O-Rings necessary for installation are included.
  • O-Rings necessary for installation are included.
See More

Carquest Premium – A/C Block Expansion Valve (Part No.T39586)

A/C Block Expansion Valve

from

$48.99
Carquest Expansion Valves are designed to regulate the flow of refrigerant through the air conditioning system to provide optimal cooling to the passenger compartment. Each expansion valve is manufactured to original equipment specifications to perform its function even in the harshest climates. Each part is supplied with the necessary gaskets and o-rings for installation.

Product Features:
  • The bodies of these expansion valves are machined from a single block of aluminum or brass metal.
  • Each expansion valve has settings for tonnage and superheat based on the vehicle specifications.
  • Each expansion valve is tested for function and leakage according to OEM specifications to ensure optimal performance of the air conditioning system.
  • O-Rings necessary for installation are included.
See More

Carquest Premium – A/C Block Type Flange Expansion Valve (Part No.T38630)

A/C Block Type Flange Expansion Valve

from

$39.99
Carquest Expansion Valves are designed to regulate the flow of refrigerant through the air conditioning system to provide optimal cooling to the passenger compartment. Each expansion valve is manufactured to original equipment specifications to perform its function even in the harshest climates. Each part is supplied with the necessary gaskets and o-rings for installation.

Product Features:
  • The bodies of these expansion valves are machined from a single block of aluminum or brass metal.
  • Each expansion valve has settings for tonnage and superheat based on the vehicle specifications.
  • Each expansion valve is tested for function and leakage according to OEM specifications to ensure optimal performance of the air conditioning system.
  • O-Rings necessary for installation are included.
  • O-Rings necessary for installation are included.
See More

Carquest Premium – A/C Block Type Flange Expansion Valve (Part No.T38866)

A/C Block Type Flange Expansion Valve

from

$43.99
Carquest Expansion Valves are designed to regulate the flow of refrigerant through the air conditioning system to provide optimal cooling to the passenger compartment. Each expansion valve is manufactured to original equipment specifications to perform its function even in the harshest climates. Each part is supplied with the necessary gaskets and o-rings for installation.

Product Features:
  • The bodies of these expansion valves are machined from a single block of aluminum or brass metal.
  • Each expansion valve has settings for tonnage and superheat based on the vehicle specifications.
  • Each expansion valve is tested for function and leakage according to OEM specifications to ensure optimal performance of the air conditioning system.
  • O-Rings necessary for installation are included.
  • O-Rings necessary for installation are included.
See More

Carquest Premium – A/C Block Type Flange Expansion Valve (Part No.T38686)

A/C Block Type Flange Expansion Valve

from

$53.99
Carquest Expansion Valves are designed to regulate the flow of refrigerant through the air conditioning system to provide optimal cooling to the passenger compartment. Each expansion valve is manufactured to original equipment specifications to perform its function even in the harshest climates. Each part is supplied with the necessary gaskets and o-rings for installation.

Product Features:
  • The bodies of these expansion valves are machined from a single block of aluminum or brass metal.
  • Each expansion valve has settings for tonnage and superheat based on the vehicle specifications.
  • Each expansion valve is tested for function and leakage according to OEM specifications to ensure optimal performance of the air conditioning system.
  • O-Rings necessary for installation are included.
  • O-Rings necessary for installation are included.
See More

Dorman – Air Conditioning Pressure Sensor (Part No.904-611)

Air Conditioning Pressure Sensor

from

$76.99
Air conditioning stopped working? It could be as simple as the pressure switch. This replacement A/C transducer switch is the fix for corroded terminals or a broken connector on the original switch. A direct replacement to restore air conditioning.

Product Features:
  • Direct replacement – this A/C transducer switch is an exact replacement for the original switch
  • Simple repair – this A/C switch replaces an existing switch with corroded terminals or a broken connector
  • Easy installation – no special tools required
  • Quality tested – switch has been tested to ensure proper fit and function
See More

Carquest Premium – HVAC Pressure Switch (Part No.ACC1669)

HVAC Pressure Switch

from

$63.99
The Carquest Premium line of vehicle electronics are designed for OE form, fit and function for both import and domestic vehicles. The A/C Pressure Switch monitors system pressures, aiding in proper and efficient control of the compressor, fans and system levels. An improperly functioning A/C Pressure Switch will provide erratic or inaccurate actuation and operation, severely affecting system performance and function. Without reliable and accurate actuation from a properly functioning A/C Pressure Switch, critical components and the system as a whole are left unregulated and unprotected which can lead to excessive wear and tear on critical components and costly system damage.

Product Features:
  • Designed and manufactured with high quality materials, industry leading electronic components and strict quality controls. Engineered to meet or exceed OE performance and to meet the uncompromising demands of service professionals.
  • Direct fit replacement matches proper OE fit, form, and function and ensures trouble free installation of your A/C Pressure Switch.
  • All units are tested using advanced end-of-line equipment that pressurizes the switch, confirms proper calibration and functionality and checks for leaks to ensure each part meets manufacturing specifications before packaging.
See More

Carquest Premium – ABS Wheel Speed Sensor (Part No.ARA3807)

ABS Wheel Speed Sensor

from

$168.99
Carquest Premium anti-lock brake system (ABS) wheel speed sensors are designed to perform in harsh environments and meet or exceed original equipment (O.E.) specifications. Carquest Premium ABS sensors are built by manufacturers that meet IATF 16949 certified framework, an internationally recognized proof of quality in the automotive industry. Each ABS sensor undergoes extensive validation testing to ensure long-lasting performance and reliability. Carquest Premium ABS sensors are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered and tested by world-class manufacturers to ensure a reliable and long-lasting repair.

Product Features:
  • Computer-Aided Design (CAD), laser scanning and 3D printing – utilizing Fused Deposition Modeling (FDM) and Stereolithography (SLA) – in the part design process ensures speed-to-market and a precise fit guaranteed.
  • O-rings or seals are included (where applicable)
  • Weather-tight connectors prevent leaks and corrosion for longer life
  • Includes all necessary brackets and grommets for easier installation
  • Extensive design validation testing and 100% end-of-line tested
  • Fluorocarbon high-temperature o-ring seals coated with lubricant for easy installation prevents hub contamination.
  • Carquest Vehicle Solutions Technical Support available from ASE certified technicians: 1-866-687-5413
See More

Carquest Premium – ABS Wheel Speed Sensor (Part No.ARA1494)

ABS Wheel Speed Sensor

from

$150.99
Carquest Premium anti-lock brake system (ABS) wheel speed sensors are designed to perform in harsh environments and meet or exceed original equipment (O.E.) specifications. Carquest Premium ABS sensors are built by manufacturers that meet IATF 16949 certified framework, an internationally recognized proof of quality in the automotive industry. Each ABS sensor undergoes extensive validation testing to ensure long-lasting performance and reliability. Carquest Premium ABS sensors are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered and tested by world-class manufacturers to ensure a reliable and long-lasting repair.

Product Features:
  • Computer-Aided Design (CAD), laser scanning and 3D printing – utilizing Fused Deposition Modeling (FDM) and Stereolithography (SLA) – in the part design process ensures speed-to-market and a precise fit guaranteed.
  • O-rings or seals are included (where applicable)
  • Weather-tight connectors prevent leaks and corrosion for longer life
  • Includes all necessary brackets and grommets for easier installation
  • Extensive design validation testing and 100% end-of-line tested
  • Fluorocarbon high-temperature o-ring seals coated with lubricant for easy installation prevents hub contamination.
  • Carquest Vehicle Solutions Technical Support available from ASE certified technicians: 1-866-687-5413
See More

Carquest Premium – ABS Wheel Speed Sensor (Part No.ARC4723)

ABS Wheel Speed Sensor

from

$221.99
Carquest Premium anti-lock brake system (ABS) wheel speed sensors are designed to perform in harsh environments and meet or exceed original equipment (O.E.) specifications. Carquest Premium ABS sensors are built by manufacturers that meet IATF 16949 certified framework, an internationally recognized proof of quality in the automotive industry. Each ABS sensor undergoes extensive validation testing to ensure long-lasting performance and reliability. Carquest Premium ABS sensors are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered and tested by world-class manufacturers to ensure a reliable and long-lasting repair.

Product Features:
  • Computer-Aided Design (CAD), laser scanning and 3D printing – utilizing Fused Deposition Modeling (FDM) and Stereolithography (SLA) – in the part design process ensures speed-to-market and a precise fit guaranteed.
  • O-rings or seals are included (where applicable)
  • Weather-tight connectors prevent leaks and corrosion for longer life
  • Includes all necessary brackets and grommets for easier installation
  • Extensive design validation testing and 100% end-of-line tested
  • Fluorocarbon high-temperature o-ring seals coated with lubricant for easy installation prevents hub contamination.
  • Carquest Vehicle Solutions Technical Support available from ASE certified technicians: 1-866-687-5413
  • Fluorocarbon high-temperature O-ring seals coated with lubricant for easy installation prevents hub contamination.
See More

Carquest Premium – ABS Wheel Speed Sensor (Part No.ARA3592)

ABS Wheel Speed Sensor

from

$139.99
Carquest Premium anti-lock brake system (ABS) wheel speed sensors are designed to perform in harsh environments and meet or exceed original equipment (O.E.) specifications. Carquest Premium ABS sensors are built by manufacturers that meet IATF 16949 certified framework, an internationally recognized proof of quality in the automotive industry. Each ABS sensor undergoes extensive validation testing to ensure long-lasting performance and reliability. Carquest Premium ABS sensors are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered and tested by world-class manufacturers to ensure a reliable and long-lasting repair.

Product Features:
  • Computer-Aided Design (CAD), laser scanning and 3D printing – utilizing Fused Deposition Modeling (FDM) and Stereolithography (SLA) – in the part design process ensures speed-to-market and a precise fit guaranteed.
  • O-rings or seals are included (where applicable)
  • Weather-tight connectors prevent leaks and corrosion for longer life
  • Includes all necessary brackets and grommets for easier installation
  • Extensive design validation testing and 100% end-of-line tested
  • Fluorocarbon high-temperature o-ring seals coated with lubricant for easy installation prevents hub contamination.
  • Carquest Vehicle Solutions Technical Support available from ASE certified technicians: 1-866-687-5413
See More

Carquest Premium – ABS Wheel Speed Sensor (Part No.ARA2666)

ABS Wheel Speed Sensor

from

$157.99
Carquest Premium anti-lock brake system (ABS) wheel speed sensors are designed to perform in harsh environments and meet or exceed original equipment (O.E.) specifications. Carquest Premium ABS sensors are built by manufacturers that meet IATF 16949 certified framework, an internationally recognized proof of quality in the automotive industry. Each ABS sensor undergoes extensive validation testing to ensure long-lasting performance and reliability. Carquest Premium ABS sensors are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered and tested by world-class manufacturers to ensure a reliable and long-lasting repair.

Product Features:
  • Computer-Aided Design (CAD), laser scanning and 3D printing – utilizing Fused Deposition Modeling (FDM) and Stereolithography (SLA) – in the part design process ensures speed-to-market and a precise fit guaranteed.
  • O-rings or seals are included (where applicable)
  • Weather-tight connectors prevent leaks and corrosion for longer life
  • Includes all necessary brackets and grommets for easier installation
  • Extensive design validation testing and 100% end-of-line tested
  • Fluorocarbon high-temperature o-ring seals coated with lubricant for easy installation prevents hub contamination.
  • Carquest Vehicle Solutions Technical Support available from ASE certified technicians: 1-866-687-5413
See More

Most Popular Expansion Valve and Orifice Tubes for 2018 BMW M5s

Enhance your 2018 BMW M5 with one of the 2 Expansion Valve and Orifice Tubes we have in stock, starting at just $48.99.

Carquest Premium – A/C Block Expansion Valve (Part No.T39493)

A/C Block Expansion Valve

from

$55.99
Carquest Expansion Valves are designed to regulate the flow of refrigerant through the air conditioning system to provide optimal cooling to the passenger compartment. Each expansion valve is manufactured to original equipment specifications to perform its function even in the harshest climates. Each part is supplied with the necessary gaskets and o-rings for installation.

Product Features:
  • The bodies of these expansion valves are machined from a single block of aluminum or brass metal.
  • Each expansion valve has settings for tonnage and superheat based on the vehicle specifications.
  • Each expansion valve is tested for function and leakage according to OEM specifications to ensure optimal performance of the air conditioning system.
  • O-Rings necessary for installation are included.
See More

Carquest Premium – A/C Block Expansion Valve (Part No.T39586)

A/C Block Expansion Valve

from

$48.99
Carquest Expansion Valves are designed to regulate the flow of refrigerant through the air conditioning system to provide optimal cooling to the passenger compartment. Each expansion valve is manufactured to original equipment specifications to perform its function even in the harshest climates. Each part is supplied with the necessary gaskets and o-rings for installation.

Product Features:
  • The bodies of these expansion valves are machined from a single block of aluminum or brass metal.
  • Each expansion valve has settings for tonnage and superheat based on the vehicle specifications.
  • Each expansion valve is tested for function and leakage according to OEM specifications to ensure optimal performance of the air conditioning system.
  • O-Rings necessary for installation are included.
See More

Best-Selling 2018 BMW M5 AC High Pressure Side Switch

Upgrade your M5 with our best-selling AC High Pressure Side Switch.

Dorman – Air Conditioning Pressure Sensor (Part No.904-611)

Air Conditioning Pressure Sensor

from

$76.99
Air conditioning stopped working? It could be as simple as the pressure switch. This replacement A/C transducer switch is the fix for corroded terminals or a broken connector on the original switch. A direct replacement to restore air conditioning.

Product Features:
  • Direct replacement – this A/C transducer switch is an exact replacement for the original switch
  • Simple repair – this A/C switch replaces an existing switch with corroded terminals or a broken connector
  • Easy installation – no special tools required
  • Quality tested – switch has been tested to ensure proper fit and function
See More

Top-Quality AC Refrigerant Pressure Sensors for 2018 BMW M5s

Choose a high-quality OEM or aftermarket AC Refrigerant Pressure Sensor for BMW M5s and enjoy top-notch performance from $85.99.

Carquest Premium – AC Pressure Sensor (Part No.ABA1128)

AC Pressure Sensor

from

$85.99
The Premium CarQuest Vehicle Solutions line of vehicle electronics are designed for OE form, fit and function for both import and domestic vehicles. The A/C Pressure Sensor reports system pressures to the on-board computer, in turn allowing the computer to properly and efficiently control the compressor, fans and system levels. An improperly functioning A/C Pressure Sensor will provide erratic or inaccurate readings to on-board computers severely affecting system performance and function. Without reliable and accurate data from a properly functioning A/C Pressure Sensor, on-board computers are unable to protect the safety of critical components and the system as a whole which can lead to excessive wear and tear on critical components and costly system damage.

Product Features:
  • Designed and manufactured with high quality materials, industry leading electronic components and strict quality controls. Engineered to exceed OE performance and to meet the uncompromising demands of service professionals.
  • Direct fit replacement matches proper OE fit, form, and function and ensures trouble free installation of your A/C Pressure Sensor.
  • All units are helium leak tested on fully automated mass spectrometer equipment before end-of-line testing.
  • All units are tested using automated end-of-line testing equipment that pressurizes the A/C Pressure Sensor and checks full-spectrum functionality and electrical output to ensure each A/C Pressure Sensor meets manufacturing specifications before packaging
See More

Our Top Pick for a 2018 BMW M5 ABS Speed Sensor

Invest in a durable ABS Speed Sensor for your 2018 BMW, knowing you’re getting trusted brands and expert craftsmanship.

Carquest Premium – ABS Wheel Speed Sensor (Part No.ARC4723)

ABS Wheel Speed Sensor

from

$221.99
Carquest Premium anti-lock brake system (ABS) wheel speed sensors are designed to perform in harsh environments and meet or exceed original equipment (O.E.) specifications. Carquest Premium ABS sensors are built by manufacturers that meet IATF 16949 certified framework, an internationally recognized proof of quality in the automotive industry. Each ABS sensor undergoes extensive validation testing to ensure long-lasting performance and reliability. Carquest Premium ABS sensors are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered and tested by world-class manufacturers to ensure a reliable and long-lasting repair.

Product Features:
  • Computer-Aided Design (CAD), laser scanning and 3D printing – utilizing Fused Deposition Modeling (FDM) and Stereolithography (SLA) – in the part design process ensures speed-to-market and a precise fit guaranteed.
  • O-rings or seals are included (where applicable)
  • Weather-tight connectors prevent leaks and corrosion for longer life
  • Includes all necessary brackets and grommets for easier installation
  • Extensive design validation testing and 100% end-of-line tested
  • Fluorocarbon high-temperature o-ring seals coated with lubricant for easy installation prevents hub contamination.
  • Carquest Vehicle Solutions Technical Support available from ASE certified technicians: 1-866-687-5413
  • Fluorocarbon high-temperature O-ring seals coated with lubricant for easy installation prevents hub contamination.
See More

FAQs for 2018 BMW M5 Air Conditioning Parts

What are the best-selling Air Conditioning Parts for 2018 BMW M5s?

Out of 5 Air Conditioning Parts that fit 2018 BMW M5s, the following parts are the top sellers:

What’s the price range for 2018 BMW M5 Air Conditioning Parts?

The prices of Air Conditioning Parts for the 2018 BMW M5 range from $48.99 up to $221.99 for the most premium parts.

What is the average price of an Air Conditioning Part for a 2018 BMW M5?

The average price for Air Conditioning Parts for the 2018 BMW M5 is $97.99. Keep in mind the variety of part types within our Air Conditioning Part category, where you are likely to find a wide range of prices across a variety of parts and components.

Does Advance Auto Parts sell Air Conditioning Parts for other BMW M5 model years?

Yes, we carry Air Conditioning Parts for 21 model years of BMW M5s between 1988 and 2023. The following model years are the most popular for Air Conditioning Part purchases: 2022, 2021, 2020, 2019, 2016, 2015, 2014, 2013, and 2010.

What are the cheapest Air Conditioning Parts for my 2018 BMW M5?

The cheapest 2018 BMW M5 Air Conditioning Parts we carry are:

Does Advance Auto Parts sell Air Conditioning Parts for any other 2018 BMW models?

Yes. We stock Air Conditioning Parts for 52 other popular 2018 BMW models. Some of the most popular are 2018 M3 Air Conditioning Parts, 2018 530i Air Conditioning Parts, 2018 330i Air Conditioning Parts, 2018 X3 Air Conditioning Parts, and 2018 X5 Air Conditioning Parts.

What types of Air Conditioning Parts do you sell for my 2018 BMW M5?

As of 11/2/25, these are some of the most in-demand types of Air Conditioning Parts for a 2018 BMW M5:

Can I get help with 2018 BMW M5 Air Conditioning Part orders?

Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about BMW Air Conditioning Parts and more.

What is your return policy for BMW M5 Air Conditioning Parts?

Advance Auto Parts keeps returns simple. For new BMW M5 Air Conditioning Parts and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.