# Air compressor accessory Proline 66314 — 3/8" thread, single piece

**URL:** https://aio.lv/en/product--proline-5663146--10786463
**Data updated:** 2026-03-12 10:13 (EET)
**Category:** Air Compressors
**Manufacturer:** Proline
**Manufacturer code:** 5663146
**EAN:** 5903755663146
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 3.49 €
**Prices and availability valid until:** 2026-07-11 23:59
**Price without VAT (21%):** 2.88 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--proline-5663146--10786463

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 18.06.2026 | free |
| Pickup points | 25.06.2026 | 1.99 EUR |
| Courier delivery to door | 25.06.2026 | 4.99 EUR |

## Summary description

Proline 66314 is an air compressor accessory with a 3/8" thread supplied as a single piece. Designed to connect or adapt pneumatic fittings and tools with compatible 3/8" threaded ports. Suitable for workshop and garage use, maintenance tasks, and pneumatic system setups where a reliable threaded connection is required.

## Long description

Proline quick connector with internal thread is designed for connecting pneumatic systems, providing a fast and secure connection between air supply components. This connector features a 3/8" internal thread and is manufactured from quality materials to offer durability and resistance to high pressure.
Advantages
The Proline quick connector delivers a reliable, leak-resistant joint for pneumatic hoses and fittings, with a standardized 3/8" internal thread for compatibility with common air tools and components. Its robust construction ensures long service life and stable performance under pressure.
Suitable for
 Connecting air hoses to compressors and valves
 Linking pneumatic tools and accessories
 Workshop and industrial pneumatic installations
Key specifications
 Brand: Proline
 Model / MPN: 5663146
 EAN: 5903755663146
 Thread: 3/8" internal thread
 Quantity: 1 pc
How to use
Ensure the mating thread and sealing surfaces are clean and undamaged. Screw the connector into the corresponding 3/8" external thread by hand, then tighten with a suitable wrench without over-torquing to avoid damaging threads. Attach the hose or fitting to the quick-connection end according to the hose or tool manufacturer instructions and check for leaks before pressurizing the system fully.
Usage recommendations
Use thread sealant or PTFE tape on metal threads if required for your pneumatic setup; verify compatibility of sealant with materials and operating pressure. Regularly inspect the connector and seals for wear and replace if signs of damage or leakage appear.

## Specifications

| Feature | Value |
|---|---|
| Connecting thread | 3/8 |
| Quantity per pack | 1 pc(s) |

## FAQ

### How much does the Air compressor accessory Proline 66314 cost, and is it available for purchase?

The price is 3.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 238 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 18.06.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Proline products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Proline service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/10786463/64449302_large.webp