Description
Product Overview
The ACME Orifice Tube 38644 is a precision‑machined aluminum component designed to replace the original air‑conditioning orifice in a wide range of vehicles. Measuring 4.88 x 2 x 1.38 inches and weighing just 0.48 ounces, the tube offers a lightweight yet robust solution that maintains consistent refrigerant flow. Its exterior is fully machined for a smooth finish, reducing the risk of debris buildup and ensuring long‑term durability. The part carries the Global Trade Identification Number 00096361386440, confirming its compliance with international standards, and is manufactured in China under strict quality controls.
![[Product front view showing all components]](https://www.summitgo.store/wp-content/uploads/2026/06/f25dc1a3588647eaa2a8424c7c33aab6.jpg)
Usage
This orifice tube is intended for use in automotive air‑conditioning systems, specifically as a direct replacement for the OEM component in both domestic and imported vehicles. Install the tube in the refrigerant line where the original orifice was located to restore proper pressure regulation and cooling efficiency. It is suitable for DIY enthusiasts with basic mechanical skills as well as professional technicians performing routine HVAC maintenance. The tube’s compact size allows installation in tight engine bays without the need for additional tools or modifications.
Why Choose Us
Choosing the ACME Orifice Tube means opting for a product that combines engineering precision with cost‑effective reliability. Each tube undergoes rigorous dimensional testing to guarantee a perfect match with the vehicle’s specifications, eliminating guesswork and reducing installation time. Our manufacturing process uses high‑grade aluminum that resists corrosion from refrigerants and environmental exposure, extending the part’s service life. Backed by a responsive customer support team, we offer assistance from selection through installation, ensuring confidence in every purchase.
Key Features
- Precision‑machined aluminum ensures exact fit and smooth refrigerant flow.
- Lightweight construction reduces overall system weight without sacrificing strength.
- Corrosion‑resistant material prolongs service life in harsh automotive environments.
- Compact dimensions allow easy installation in confined engine compartments.
- Dedicated customer support and hassle‑free return policy for peace of mind.
FAQ
Is this tube compatible with my vehicle?
The ACME 38644 is designed to match the specifications of many standard automotive HVAC systems. Check your vehicle’s service manual for the original part number; if it matches 38644, this tube will be a direct fit.
Do I need special tools to install the tube?
No special tools are required. The tube can be installed using standard HVAC line wrenches and basic hand tools. Ensure the system is depressurized before beginning installation.
What warranty does ACME provide?
ACME offers a one‑year limited warranty covering manufacturing defects. If the tube fails due to material or workmanship issues within this period, we will replace it at no additional cost.
Can I use this tube for aftermarket cooling upgrades?
Yes, the tube’s high‑quality aluminum construction makes it suitable for both OEM replacements and performance upgrades where reliable refrigerant flow is critical.
How do I dispose of the old orifice tube?
Old tubes should be recycled according to local regulations for metal components. Many auto parts stores accept them for recycling.



Air Conditioning Orifice Tube UAC Metal Design
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