Oil Pressure Tester Tool, Oil Pressure Gauge kit

Yonligonju Oil Pressure Tester Kit is a complete engine oil pressure diagnostic set with a 0–140 PSI dual-display gauge, oil-resistant hose, ten adapters, and a protective case for accurate, on-vehicle testing.

When diagnosing engine oil pressure, having the correct fittings, a readable gauge and durable hose makes the difference between a guess and a reliable measurement. This Yonligonju kit bundles a shockproof dual-display pressure gauge, quick-connect couplers (straight and 90°), ten threaded adapters that cover common car, truck, motorcycle and marine fittings, nine sealing gaskets, and a compact toolbox so you can take measurements on the bench or roadside.

How does the Yonligonju gauge measure oil pressure?

The kit includes a mechanical 0–140 PSI pressure gauge with a clear dual display and rubber buffer protection to reduce impact and scratches. It connects to the engine via an oil-resistant hose and quick couplers for a tight, leak-resistant seal.

• 0–140 PSI range suitable for most gasoline and small diesel engines
• Dual-display face for easy reading from different angles
• Rubber cover provides shock and scratch protection
• Quick couplers allow fast hookup and removal

Which adapters are included and what engines do they fit?

This set supplies ten marked adapters and common thread fittings to match a wide range of vehicle oil ports. Each adapter is stored in a dedicated slot inside the red toolbox, making selection quick during a diagnostic session.

• Adapters: R 1/8 DIN 2999, 1/8"x27 NPT, 1/4"x18 NPT, 3/8"x20 UNF, 1/2"x20 UNF
• Metric adapters: M10, M12, M14, M16, M18
• Nine sealing gaskets to ensure leak-free connections
• Fits cars, light trucks, motorcycles and small marine engines where an adapter matches

Is the hose and fittings durable enough for workshop use?

The hose is built to resist oil and high temperatures and remains flexible for maneuvering in tight engine bays. Brass quick fittings (straight and 90° elbow) provide a durable, corrosion-resistant connection that seals reliably during testing.

• Oil-resistant, high-temperature hose for repeated professional use
• Brass fittings for long-lasting, secure connections
• Straight and angled quick couplers for accessibility in cramped spaces
• Sturdy toolbox keeps parts organized and protected

How easy is it to get accurate readings and store the kit?

The combination of a clear gauge face, rubber buffer, and labeled adapters simplifies both measurement and storage. After testing, components return to their molded positions in the red case so the kit stays ready for the next inspection.

• Gauge face designed for quick, accurate reading during warm-up or under load
• Components labeled and stored in a fitted toolbox for fast access
• Quick couplers speed up connection and minimize oil drips
• Durable materials reduce maintenance and prolong service life

Who is this for? The Yonligonju Oil Pressure Tester Kit suits DIY mechanics, professional technicians, fleet maintainers and hobbyists who need a portable, reliable tool to read oil pressure across a variety of small to mid-sized engines. If you service cars, light trucks, motorcycles or boats and want clear pressure readings without guessing, this kit gives the adapters, hose and gauge to perform on-vehicle diagnostics and carry out routine checks or troubleshooting.