AUTOOL PT650 Digital Transmission Oil Pressure Tester Kit – ATF Pressure Gauge
Digital ATF Gauge 0–426 PSI, 12 Adapters & Max/Min Hold
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AUTOOL PT650 ATF Transmission Fluid Pressure Gauge
Digital Transmission Oil Pressure Testing Device
The AUTOOL PT650 is a digital transmission oil pressure tester for diagnosing automatic transmission faults. It gives workshops and transmission specialists accurate line pressure readings to help pinpoint slipping, harsh or delayed shifts, worn pumps, sticking valves and internal leaks before the transmission comes apart.
Connect it to the transmission test port using the included 12-type copper adapter set. The 2.8-inch backlit screen shows live pressure along with maximum, minimum and differential readings, so you can compare pressure across gears and engine speeds against the manufacturer's specification.

Main Features
- Digital pressure reading: 0–29.4 bar / 0–426.6 psi / 0–30 kg/cm², with 0.01 resolution.
- 0.5% FS accuracy: precise readings for comparing results with factory specifications.
- Max, min and differential values: capture pressure changes during gear shifts and engine speed changes.
- Data hold and lock: freeze a reading so you can record it after the test.
- Test timer: shows measurement time alongside pressure.
- 12-type adapter set: riveted copper connectors to fit common transmission test ports.
- Oil-resistant hose: built for automatic transmission fluid.
- 2.8-inch backlit display: easy to read under the vehicle or in low light.
- Switchable units: bar, psi and kg/cm².
- Auto power-off: after 5 minutes of inactivity to save battery.
Package Includes
- 1 × AUTOOL PT650 digital pressure gauge with measuring probe
- 1 × Oil-resistant transfer hose
- 1 × 12-type connector adapter set
- 1 × Carry case
- 1 × User manual
Why Transmission Specialists Choose the PT650
| Digital display, 0.01 resolution | Clearer, more precise readings than an analogue gauge |
| 0.5% FS accuracy | Confident comparison against factory pressure specs |
| Max / min / differential readings | Spot pressure drops and spikes during shifts |
| Data hold and lock | Record readings without rushing |
| 12-type copper adapter set | Fits a wide range of transmission test ports |
| Oil-resistant hose | Safe and durable with ATF |
| Backlit 2.8-inch screen | Readable under the vehicle and in low light |
| Bar, psi and kg/cm² units | Match the units in any workshop manual |

Which AUTOOL Pressure Tester Do I Need?
Each AUTOOL digital pressure tester is built for one system, with the pressure range and fittings to match. Choose by the system you need to test.
| Model | What it tests | Pressure range | |
|---|---|---|---|
| Engine cylinder compressionWorn rings, valves or head gaskets | 0–29.4 bar 0–426.6 psi | View PT610 | |
| Engine oil pressureLow oil pressure, worn oil pumps or bearings | 0–29.4 bar 0–426.6 psi | View PT620 | |
| GDI high-pressure fuel (petrol)Weak high-pressure pumps on direct-injection engines | 0–360 bar 0–5221 psi | View PT640 | |
| Automatic transmission oil pressureSlipping, harsh or delayed gear shifts | 0–29.4 bar 0–426.6 psi | View PT650 |
Never connect a low-pressure tester (0–30 bar) to a GDI or diesel high-pressure circuit, and always depressurise the system before connecting. Specifications are based on AUTOOL data. Refer to each product page or contact us for more information.
AUTOOL PT650 Brake Pressure Gauge
| Application | Automatic transmission oil pressure |
|---|---|
| Pressure Range | 0–29.4 bar / 0–426.6 psi / 0–30 kg/cm² |
| Overload Limit | 40 bar |
| Accuracy | 0.5% FS |
| Resolution | 0.01 |
| Units | bar, psi, kg/cm² |
| Readings Displayed | Real-time, maximum, minimum, differential, measurement time |
| Functions | Zero, data hold, data lock, clear, timer reset |
| Display | 2.8-inch backlit screen |
| Data Storage | Not supported |
| Temperature Measurement | Not supported |
| Adapters | 12-type riveted copper connector set |
| Power | 4 × AAA batteries (6 V) |
| Auto Power-Off | After 5 minutes of inactivity |
| Warranty | 3 years main unit, 1 year accessories (manufacturer) |

Delivery
99% of purchases are dispatched from our Melbourne warehouse within 24 hours of payment. Every parcel is shipped with Australia Post e-Parcel, complete with tracking and signature on delivery.
Need it sooner? Express shipping is also available—check if your postcode is in the Next Day Delivery network.
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All AZscanners products are backed by a 12-month warranty (unless otherwise stated). We stand by the quality of our tools and will repair or replace your item if a covered fault arises.
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