# Foam lance Karcher (MPN 6.394-668.0) — professional foam sprayer for pressure washers

**URL:** https://aio.lv/en/product--karcher-6394-6680--11673668
**Data updated:** 2026-01-12 19:38 (EET)
**Category:** Pressure Washers
**Manufacturer:** Karcher
**Manufacturer code:** 6.394-668.0
**EAN:** 4039784401549
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 107.99 €
**Prices and availability valid until:** 2026-07-17 23:59
**Price without VAT (21%):** 89.25 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--karcher-6394-6680--11673668

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 29.06.2026 | free |
| Pickup points | 02.07.2026 | 1.99 EUR |
| Courier delivery to door | 02.07.2026 | 4.99 EUR |

## Summary description

Karcher foam lance (MPN 6.394-668.0) is an attachment for pressure washers that produces thick cleaning foam to aid degreasing and pre-washing. It connects to compatible pressure washer wands and dispenses adjustable foam concentration for vehicles, exterior surfaces, and equipment. The lance improves detergent coverage, reduces rinsing time, and helps achieve more efficient cleaning results.

## Long description

Karcher foam lance (MPN 6.394-668.0) is a professional attachment for compatible pressure washers that produces thick cleaning foam to support degreasing and pre-washing. Designed to connect to pressure washer wands, the foam lance dispenses adjustable foam concentration to improve detergent coverage on vehicles, building exteriors, industrial equipment and other washable surfaces. Using the foam lance helps reduce rinsing time and promotes more efficient cleaning by keeping cleaning agents in contact with surfaces longer than a simple spray.
Advantages
The Karcher foam lance provides controlled foam application with an adjustable nozzle and dilution settings to tailor foam thickness and detergent consumption. Its design is compatible with standard pressure-washer lance connections, enabling straightforward installation and use. The lance supports more even detergent distribution across surfaces, which helps reduce the amount of mechanical scrubbing and shortens overall cleaning cycles. Constructed with parts suited for cleaning chemistry, it offers reliable performance when used with recommended detergents.
Suitable for
 Pre-washing and degreasing of cars, motorcycles and commercial vehicles
 Applying foam to building exteriors, patios and driveways
 Cleaning industrial and agricultural machinery and equipment
 Preparing surfaces for further treatment such as pressure rinsing or manual detailing
Key specifications
 Brand: Karcher
 Manufacturer part number (MPN): 6.394-668.0
 EAN: 4039784401549
 Type: Foam lance for pressure washers (professional foam sprayer)
 Function: Produces adjustable thick cleaning foam for improved detergent coverage
How to use
Attach the foam lance to a compatible pressure washer wand according to the pressure washer manufacturer’s instructions. Prepare a foam-compatible detergent solution at the recommended dilution for the chosen cleaning task, pour into the lance’s reservoir if applicable, and set the dilution and nozzle adjustments to achieve the desired foam thickness. Apply foam evenly across the surface from top to bottom, allow the detergent to dwell for the manufacturer-recommended contact time, then rinse thoroughly with the pressure washer or proceed with additional mechanical cleaning if required.
Usage recommendations
Use detergents specifically formulated for foam lances and follow dilution guidelines to prevent damage to surfaces and the lance itself. Verify compatibility with your pressure washer model and follow all safety instructions from the pressure washer and detergent manufacturers. Rinse the lance after use when switching detergents or before storage to maintain reliable operation.

## FAQ

### How much does the Foam lance Karcher 6.394-668.0 cost, and is it available for purchase?

The price is 107.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 32 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 29.06.2026 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, Installment. All transactions are 100% secure and encrypted.

### Can Foam lance Karcher 6.394-668.0 be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### 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 Karcher 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 Karcher 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/11673668/66983277_large.webp