# Hose clamp Topex 37D503, worm gear type, size 12–20 mm, corrosion resistance class W2

**URL:** https://aio.lv/en/product--topex-37d503--11935497
**Data updated:** 2026-03-10 11:28 (EET)
**Category:** Miscellaneous repair tools
**Manufacturer:** Topex
**Manufacturer code:** 37D503
**EAN:** 5902062375032
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 3.49 €
**Prices and availability valid until:** 2026-07-13 23:59
**Price without VAT (21%):** 2.88 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--topex-37d503--11935497

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 03.07.2026 | free |
| Pickup points | 08.07.2026 | 1.99 EUR |
| Courier delivery to door | 08.07.2026 | 4.99 EUR |

## Summary description

Topex 37D503 is a worm-gear hose clamp with a 12–20 mm clamping range and W2 corrosion resistance. Designed for securing hoses, pipes and tubing to fittings in automotive, plumbing and DIY applications. The adjustable stainless band and captive screw provide reliable sealing pressure and easy installation with a screwdriver or nut driver.

## Long description

Topex 37D503 is a worm-gear hose clamp designed for securing hoses, pipes and tubing to fittings in automotive, plumbing and general DIY applications. The clamp covers a 12–20 mm clamping range and features corrosion resistance class W2 for improved durability in environments with moderate exposure to moisture. An adjustable stainless band and captive screw allow precise tightening and straightforward installation using a standard screwdriver or nut driver.
Advantages
The worm-gear mechanism provides uniform clamping pressure around the hose to reduce leaks and slippage. The captive screw design prevents loss of small parts during installation and maintenance. Corrosion resistance class W2 increases service life compared with untreated fittings, making the clamp suitable for intermittent wet conditions. The compact size and adjustable range offer flexibility for use on small-diameter hoses and tubing.
Suitable for
Securing fuel, coolant and vacuum hoses in automotive repair and maintenance
Connecting flexible hoses to fittings in domestic plumbing and heating systems
Small workshop and DIY projects that require hose fastening or sealing
Key specifications
Clamping range: 12–20 mm
Type: worm-gear (worm drive) clamp
Material (band): stainless-steel band for the adjustable segment
Screw: captive screw for easy installation
Corrosion resistance: class W2 (enhanced resistance for moderate moisture exposure)
How to use
Position the clamp over the hose end so the band sits evenly around the hose and the fitting. Tighten the captive screw with a suitable screwdriver or nut driver until the clamp provides a secure seal without deforming the hose. Inspect the connection to ensure even contact and no gaps. For removal, loosen the screw until the band can be slid off the hose. Regularly check clamped connections for tightness and signs of wear or corrosion during routine maintenance.
Usage recommendations
Use the clamp within its specified 12–20 mm range and avoid over-tightening to prevent damage to rubber or soft plastic hoses. For continuous exposure to harsh or marine environments, consider higher corrosion-resistance options. Periodically inspect clamps in systems exposed to temperature cycles or vibration.

## FAQ

### How much does the Hose clamp Topex 37D503 (12–20 mm, W2) 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 — 100 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 03.07.2026 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 Topex 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 Topex 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/11935497/67367732_large.webp