Orion Motor Tech 3-Way AC Manifold Kit with 5ft Hoses, Oil-Filled Hybrid Gauges & Brass Fittings

Orion Motor Tech OMT 3-way AC gauges are a complete, heavy-duty manifold kit that lets you read pressures, evacuate, and recharge vehicle HVAC systems using R134a, R12, R22, or R502 refrigerants.

This professional-grade manifold set combines robust materials, hybrid anti-shock gauges, and color-coded 5-foot hoses so you can perform accurate HVAC service on cars and light trucks. The kit includes everything needed for diagnosis and servicing—gauges with oil-filled cores for durability, reinforced hoses rated for high pressure, quick couplers, and both puncture and self-sealing can taps—making it suitable for DIYers and automotive technicians alike.

How do these gauges help diagnose an automotive AC system?

The manifold lets you measure both low- and high-side pressures simultaneously, so you can identify issues like leaks, blockages, or compressor problems quickly. Readings combined with temperature checks help narrow down the root cause of poor cooling.

• Dual ports display high and low side pressures at once for faster troubleshooting
• Calibration screws keep gauge accuracy within about 1.6% for reliable readings
• Integrated moisture indicator gives instant feedback on system contamination

What durability and accuracy features does the OMT set include?

The OMT kit uses solid brass fittings, durable ABS housing, and a hybrid gauge design that resists shock while performing well in cold conditions. The mix of an oil-filled core with a dry dial reduces wear yet avoids sluggish needle movement in low temperatures.

• Brass construction on fittings improves corrosion resistance and service life
• Hybrid anti-shock gauges combine longevity with winter-ready responsiveness
• Adjustable calibration screws allow fine-tuning to maintain measurement precision

What comes in the box and how do the hoses and couplers work?

The package includes a three-way manifold gauge, three color-coded 5-foot hoses, two adjustable 1/4" quick couplers, a 1/4" to 1/2" 29° trap adapter, a puncture-style can tap, and a self-sealing can tap for charging. Hoses are reinforced for daily pressures and include a high burst-pressure safety margin.

• Blue low-side, red high-side, yellow service/charging hose for intuitive hookup
• 4-layer PVC reinforcement supports working pressures up to 600 psi
• Quick couplers speed connections, reducing refrigerant loss during service

Which refrigerants and tasks is this manifold set compatible with?

This manifold supports common automotive and light commercial refrigerants including R134a, R12, R22, and R502, enabling a range of maintenance actions from pressure checks to evacuation and recharge. It’s built to handle typical shop and DIY workloads without specialized adapters for these refrigerants.

• Works with R134a, legacy R12, and select R22/R502 systems where applicable
• Useful for pressure testing, evacuating, and controlled refrigerant charging
• Includes can taps for both puncture and self-sealing canister charging methods

Who is this for: The Orion Motor Tech OMT 3-way gauge set is aimed at automotive technicians, HVAC-savvy DIYers, and mobile mechanics who need a durable, accurate manifold kit for routine and diagnostic AC work. If you require a compact, all-in-one solution to measure pressures, monitor moisture, and perform refills on vehicles using R134a or compatible refrigerants, this kit provides the fittings, gauges, and hoses to complete those jobs reliably.