# Air compressor accessory Proline 66313 — 1/4" connecting thread

**URL:** https://aio.lv/en/product--proline-5663139--10786462
**Data updated:** 2026-03-12 10:13 (EET)
**Category:** Air Compressors
**Manufacturer:** Proline
**Manufacturer code:** 5663139
**EAN:** 5903755663139
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 2.99 €
**Prices and availability valid until:** 2026-07-12 23:59
**Price without VAT (21%):** 2.47 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--proline-5663139--10786462

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 19.06.2026 | free |
| Pickup points | 26.06.2026 | 1.99 EUR |
| Courier delivery to door | 26.06.2026 | 4.99 EUR |

## Summary description

Proline air compressor accessory model 66313 with a 1/4" connecting thread. Designed as a fitting or adapter for pneumatic systems, this accessory enables secure connections between hoses, tools and compressor outlets that use a 1/4" thread. Suitable for workshop, garage and industrial pneumatic applications where a standardized connection is required.

## Long description

The Proline quick connector with internal thread is designed for connecting pneumatic systems, providing a fast and secure joint between air supply components. It features a 1/4" internal thread and is made from durable materials to withstand high pressure and long-term use.
Advantages
The Proline quick connector offers quick installation and reliable sealing thanks to its internal 1/4" thread. Constructed from quality materials, it provides resistance to wear and pressure, ensuring consistent performance in pneumatic circuits.
Suitable for
Connecting hoses and fittings in workshop air supply systems
Repair and maintenance of pneumatic tools and equipment
Industrial and automotive pneumatic installations requiring 1/4" thread connections
Key specifications
Brand: Proline
Model / MPN: 5663139
EAN: 5903755663139
Thread type: internal (female)
Thread size: 1/4"
Application: pneumatic systems, air supply connections
How to use
Ensure the pneumatic system is depressurised before installation. Screw the connector into the matching 1/4" male thread on the hose or component until hand-tight, then secure with an appropriate tool if required, avoiding over-tightening. After installation, pressurise the system and check for leaks at the connection point.
Usage recommendations
Use compatible 1/4" male-thread fittings and apply thread sealant or PTFE tape if necessary for improved sealing. Regularly inspect the connector for wear or damage and replace if leakage or deterioration is observed.

## Specifications

| Feature | Value |
|---|---|
| Connecting thread | 1/4 |
| Quantity per pack | 1 pc(s) |

## FAQ

### How much does the Air compressor accessory Proline 66313 cost, and is it available for purchase?

The price is 2.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 278 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 19.06.2026 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/10786462/64449298_large.webp