# Compression gauge Rockforce RF-903G7 — petrol engine compression tester

**URL:** https://aio.lv/en/product--rockforce-rf-903g7--12031359
**Data updated:** 2026-03-12 16:39 (EET)
**Category:** Tool kits and accessories
**Manufacturer:** Rockforce
**Manufacturer code:** RF-903G7
**EAN:** 5905101302266
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 15.49 €
**Prices and availability valid until:** 2026-07-13 23:59
**Price without VAT (21%):** 12.80 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--rockforce-rf-903g7--12031359

## 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

Compression gauge Rockforce RF-903G7 is a diagnostic tool for measuring cylinder compression in petrol engines. It provides quick pressure readings to help assess engine health, detect leaks, worn rings or valves, and support maintenance decisions. Portable and suitable for workshop or roadside checks on cars and light vehicles using gasoline engines.

## Long description

Rockforce RF-903G7 petrol engine compression tester is a handheld diagnostic instrument designed to measure cylinder compression pressure in gasoline engines. It offers quick pressure readings to evaluate engine condition, detect combustion chamber leaks, worn piston rings, or valve sealing problems. The tester is compact and portable, intended for use in workshops, service garages, or roadside assessments of cars and light vehicles with petrol engines.
Advantages
The device delivers rapid and direct pressure readings, allowing technicians and vehicle owners to identify compression-related faults without disassembling the engine. Its portable design simplifies transport and on-site diagnostics, while a durable construction ensures reliable measurements under typical workshop conditions. Clear pressure feedback supports informed maintenance and repair decisions.
Suitable for
Routine diagnostics of gasoline car engines
Pre-purchase checks and used vehicle inspections
Identifying worn piston rings or leaking valves
Workshop troubleshooting and roadside assessments
Key specifications
Measurement type: static cylinder compression pressure
Applicable engine type: petrol (gasoline) engines
Form factor: handheld, portable gauge
Connection: threaded adapter(s) for spark plug ports
Display: analogue pressure gauge for quick reading
Typical use environment: workshops, garages, roadside
How to use
Warm the engine to normal operating temperature, then disable the ignition and fuel supply according to manufacturer safety procedures. Remove the spark plug from the cylinder to be tested and screw the appropriate threaded adapter into the spark plug bore. Crank the engine several rotations using the starter while observing the gauge to obtain a peak pressure reading. Repeat the procedure for each cylinder and compare readings to manufacturer specifications or to other cylinders to identify anomalies.
Usage recommendations
Always follow vehicle manufacturer safety instructions when performing compression tests: work in a well-ventilated area, ensure the ignition and fuel systems are disabled, and use appropriate personal protective equipment. When results indicate low or uneven compression, consider leak-down testing or visual inspection of piston rings and valves for definitive diagnosis.

## FAQ

### How much does the Compression gauge Rockforce RF-903G7 cost, and is it available for purchase?

The price is 15.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 550 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 Rockforce 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 Rockforce 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/12031359/67519020_large.webp