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Power Tools Direct£35.34Visit shop Sealey Gsa20 Air Ratchet Wrench 3/8Insq Drive
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B&Q£51.04Visit shop - Sealey Air Ratchet Wrench 3/8"sq Drive Gsa20
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The Sealey GSA20 3/8 inch air ratchet wrench is designed for professional mechanics and automotive technicians who require reliable performance in tight spaces. Its standout benefit is the combination of a high-torque 45lb.ft output and a vibration-dampening handle that reduces operator fatigue during extended use. While it is highly capable for engine bay work, users should note that it requires a consistent 90psi air supply to reach its peak torque rating, making it less effective when paired with smaller, hobbyist-grade compressors.
| Model Part Number | GSA20 |
|---|---|
| Brand | Sealey |
The GSA20 provides a maximum torque output of 45lb.ft (61Nm).
It depends on your compressor's CFM rating. The GSA20 requires 5cfm; if your compressor cannot maintain this, the wrench will stall frequently.
Yes, always use high-quality air tool oil. Never use engine oil or detergent-based oils, as these can damage the tool's internal seals.
The 3/8 inch square drive is a fixed component of the GSA20 and cannot be changed to a 1/4 or 1/2 inch drive.
The exhaust cap at the rear of the tool housing can be manually rotated 360 degrees to direct air away from your working area.
The Sealey GSA20 weighs approximately 1.2kg.
Check your compressor tank pressure; ensure it is consistently at 90psi and that the air hose is not kinked or restricted.
Inspect the trigger assembly for debris and ensure the internal O-rings have been lubricated with air tool oil.
Remove any accumulated debris from the head and apply a small amount of grease to the pawl mechanism.
To ensure the longevity of your GSA20, follow these maintenance and setup guidelines:
