# Compression Tester Forcekraft FK-903G7 for Petrol Engines, Pressure Range 0–21 bar

**URL:** https://aio.lv/en/product--forcekraft-fk-903g7--12053339
**Data updated:** 2026-03-12 19:36 (EET)
**Category:** Measuring tools
**Manufacturer:** Forcekraft
**Manufacturer code:** FK-903G7
**EAN:** 5905101302273
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 12.99 €
**Prices and availability valid until:** 2026-07-30 23:59
**Price without VAT (21%):** 10.74 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--forcekraft-fk-903g7--12053339

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 17.07.2026 | free |
| Pickup points | 22.07.2026 | 1.89 EUR |
| Courier delivery to door | 22.07.2026 | 4.99 EUR |

## Summary description

Handheld compression tester Forcekraft FK-903G7 for petrol (gasoline) engines, measuring cylinder pressure in the range 0–21 bar. Designed to check engine cylinder compression for diagnostics, maintenance and troubleshooting. Includes gauge and fittings for spark-plug port connection; suitable for workshop and field use to detect leakage, worn rings or valves and assess engine condition.

## Long description

The Forcekraft FK-903G7 compression tester for petrol engines is a handheld diagnostic tool designed to measure cylinder pressure in the range of 0–21 bar. It provides a direct reading of maximum compression pressure via an analogue gauge and includes fittings for connection through the spark plug port. The device is intended for routine checks, troubleshooting and maintenance of gasoline engines in workshops and field service environments, helping to identify pressure loss due to worn piston rings, leaking valves, head gasket faults or other mechanical issues.
Advantages
The tester offers a clear analogue display that allows quick assessment of compression values without electronic calibration. Its pressure range up to 21 bar covers typical petrol engine requirements, and the included spark-plug port fittings simplify connection to a wide range of engine types. The handheld design and mechanical gauge make the unit durable under workshop conditions and suitable for use where electronic tools may be less practical.
Suitable for
Diagnostics of petrol (gasoline) engines in cars, motorcycles and small engines
Routine maintenance and pre-purchase engine checks
Detecting worn piston rings, leaking valves or head gasket failures
Workshop inspections and field service troubleshooting
Key specifications
Measurement range: 0–21 bar
Type: analogue handheld compression tester with gauge
Connection: fittings for spark-plug port attachment
Application: petrol (gasoline) engines — single-cylinder and multi-cylinder
Intended use: static compression testing of engine cylinders
How to use
Warm the engine to normal operating temperature, then disable the ignition and remove the spark plug of the cylinder being tested. Attach the appropriate fitting to the spark-plug port and connect the tester securely. Crank the engine repeatedly with the starter for a few compression strokes while observing the gauge to record the maximum pressure reading. Repeat the procedure for each cylinder and compare values to the engine manufacturer’s specifications to identify deviations or inconsistencies.
Usage recommendations
Perform tests with the battery sufficiently charged to achieve consistent cranking speed. Record readings for all cylinders and repeat measurements if values differ significantly. Use the tester in a clean environment and inspect fittings and seals before each use to ensure accurate pressure readings.

## FAQ

### How much does the Forcekraft FK-903G7 Compression Tester 0–21 bar cost, and is it available for purchase?

The price is 12.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 504 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 17.07.2026 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 Forcekraft 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 Forcekraft 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/12053339/67539419_large.webp