# Expansion Tank DNM Denko ST8RC (MPN SDNM0033) – compact coolant/overflow reservoir

**URL:** https://aio.lv/en/product--dnm-sdnm0033--11853075
**Data updated:** 2026-03-09 17:28 (EET)
**Category:** Car Accessories
**Manufacturer:** DNM
**Manufacturer code:** SDNM0033
**EAN:** 5907558617733
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 5.99 €
**Prices and availability valid until:** 2026-07-14 23:59
**Price without VAT (21%):** 4.95 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--dnm-sdnm0033--11853075

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 06.07.2026 | free |
| Pickup points | 09.07.2026 | 1.99 EUR |
| Courier delivery to door | 09.07.2026 | 4.99 EUR |

## Summary description

DNM Denko ST8RC expansion (overflow) tank, model SDNM0033, is a compact replacement reservoir designed for cooling systems. It serves as a coolant expansion and overflow container, providing a sealed place for thermal expansion and temporary fluid storage. Suitable for automotive or small engine cooling applications where a dedicated external expansion tank is required.

## Long description

DNM Denko ST8RC expansion tank is a compact coolant overflow reservoir designed for cooling systems that require an external sealed container for thermal expansion and temporary fluid storage. The unit provides a dedicated location to collect excess coolant when engine temperature rises and returns fluid to the system as it cools. Its compact form factor allows installation in confined engine bays or on small engines where space is limited.
Advantages
The expansion tank offers a simple, reliable solution for managing coolant overflow and maintaining correct coolant level in closed or semi-closed cooling systems. Its sealed design reduces the risk of contamination and helps preserve system pressure balance. The compact dimensions and standardized inlet/outlet arrangement make it suitable for retrofit or replacement applications without extensive modification.
Suitable for
 Automotive cooling systems requiring an external expansion/overflow reservoir
 Small engine applications with limited installation space
 Replacement of worn or damaged external coolant reservoirs
 Retrofit projects where a compact, sealed tank is needed
Key specifications
 Function: coolant expansion and overflow reservoir
 Design: compact external tank suitable for confined spaces
 Material: durable thermoplastic construction for fluid compatibility and corrosion resistance
 Connection type: standard inlet/outlet ports for coolant hose attachment
 Sealing: sealed top to reduce contamination and maintain pressure balance
How to use
Install the expansion tank in a stable, upright position within reach of the cooling system's filler neck or hose connection. Connect the inlet and outlet hoses securely using appropriate clamps, ensuring leak-free joints. Fill the system with the recommended coolant to the prescribed level, then run the engine until operating temperature is reached to allow air to purge and coolant to circulate between the radiator and the expansion tank. Check for leaks and confirm coolant level after the system cools, topping up if necessary.
Usage recommendations
Use coolant and additives recommended by the vehicle or engine manufacturer. Inspect hose connections and the tank body periodically for signs of wear, cracks, or leaks, and replace the tank if damage or persistent leakage is observed. When installing in confined spaces, verify routing to avoid contact with hot components or moving parts.

## FAQ

### How much does the DNM Denko ST8RC expansion tank SDNM0033 cost, and is it available for purchase?

The price is 5.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 30 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 06.07.2026 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 DNM 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 DNM 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/11853075/67251429_large.webp