Air compressor accessory Proline 66301 3/8"

Name: Air compressor accessory Proline 3/8" 5663016
Brand: Proline
SKU: 10786476
Price: 4.99 EUR
Availability: InStock

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Air compressor accessory Proline 3/8" connecting thread (model 66301)

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Short description

Proline air compressor accessory model 66301 is a 3/8" connecting thread component designed for joining hoses, fittings or tools to compressor outlets. Manufactured under Proline with MPN 5663016 and EAN 5903755663016, it provides a standardized thread size for pneumatic connections and is suitable for workshop and DIY pneumatic systems.

Available at price 4.99 €: 2 pcs.

Total available for order: 202 pcs.

Warranty: 2 Years

SKU: 10786476

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Deliver the order:

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to the Customer Service Center at Kengaraga 2b, Riga

18.06.2026 {{selectedOffer.officeDeliveryString}}

free

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Customer service center

2b. Kengaraga str., Riga, Latvia, LV-1063

18.06.2026 {{selectedOffer.officeDeliveryString}}

free

Courier Delivery Please note that in case of a large parcel additional delivery costs may apply!

25.06.2026 {{selectedOffer.courierDeliveryString}}

From 4.99 €

Parcel couriers

Latvijas Pasts pakomāts / Unisend / DPD Paku skapis / Omniva / Venipak Pickup / Venipak Locker / Latvijas Pasts nodaļa

25.06.2026 {{selectedOffer.parcelStationDeliveryString}}

From 1.99 €

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Payment Methods:

Bank transfer, Bank cards on-line, Apple Pay, Google Pay

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Product information

Description

The Proline quick connector with valve and external thread is designed for connecting pneumatic system components, providing a fast and secure connection between air supply parts. The connector features a 3/8" external thread and is made from quality materials to ensure durability and resistance to high pressure.

Advantages

The Proline quick connector combines a built-in valve and 3/8" external thread to simplify installation and reduce air leaks. Its robust construction offers long service life and reliable performance under high-pressure conditions. The compact design allows easy integration into existing pneumatic systems.

Suitable for

Connecting air hoses and fittings in workshop pneumatic systems
Attaching tools and accessories to air compressors
Maintenance and assembly tasks in automotive and industrial settings

Key specifications

Brand: Proline
Model / MPN: 5663016
EAN: 5903755663016
Thread type: 3/8" external thread
Type: Quick connector with valve for pneumatic systems

How to use

Ensure the compressor or air supply is depressurized before installation. Screw the 3/8" external thread into the matching female port or fitting until securely seated. Connect the hose or mating coupling to the quick connector and engage the coupling until it locks. After installation, pressurize the system and check for leaks; tighten connections if necessary.

Usage recommendations

Use compatible 3/8" fittings and ensure thread sealing where required. Regularly inspect the connector and valve for wear or damage and replace if leaks or faults are detected. Follow standard safety procedures when working with pressurized air.

All features

Connecting thread:: 3/8
Quantity per pack:: 1 pc(s)

Description

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Warehouse	Stock	Delivery to the store	Store Price
WH189	2	18.06.2026 Best delivery	4.99 € Best price
WH355	200	02.07.2026	7.99 €

4.99 €

Stock: 2

Delivery Date: 18.06.2026 Best delivery

Warehouse: WH189

7.99 €

Stock: 200

Delivery Date: 02.07.2026

Warehouse: WH355

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Customer questions

FAQ

How much does the Air compressor accessory Proline 66301 3/8" cost, and is it available for purchase?

The price is 4.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 202 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. We will assist with consultation, warranty claim processing, and coordination with certified service centers.

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