Yonligonju Oil Pressure Tester Kit 0–140 PSI (Red) — Dual-Display Gauge, Brass Fittings

Yonligonju Oil Pressure Tester Tool kit is a complete 0–140 PSI diagnostic gauge set for checking engine oil pressure on cars, trucks, motorcycles and small boats.

If you're troubleshooting oil pressure issues or verifying an oil-pump repair, this compact kit delivers a rugged gauge, oil-resistant hose, brass fittings and ten adapters stored in a red case. Built for DIY mechanics and professional techs, the unit reads 0–140 PSI with a clear dual-display face and a rubber buffer cover that helps protect the gauge while you work.

How do I use the Yonligonju oil pressure gauge safely?

Attach the correct adapter for your engine, connect the oil-resistant hose to the gauge, and run the engine per manufacturer test steps while monitoring the reading. Always follow engine-specific procedures—warm the engine to operating temperature and relieve fuel/electrical systems when required.

• Select the numbered adapter that matches your engine port.
• Hand-tighten brass fittings then secure the quick elbow fitting.
• Start engine and observe gauge at idle and higher RPMs.
• Shut engine off before disconnecting to avoid oil spray.

What comes in the kit and which vehicles fit the adapters?

The kit includes a dual-display pressure gauge with rubber buffer cover, a high-temperature oil-resistant hose, brass straight and elbow quick fittings, and ten metal adapters organized in a red storage case. Adapters are numbered for fast selection and cover most gasoline and small diesel engines, plus motorcycles and boats when thread sizes match.

• Dual-display gauge with clear scale (0–140 PSI).
• Oil-resistant, flexible high-temp hose for durability.
• Brass straight and curved quick fittings for secure seals.
• Ten stamped metal adapters stored in the red case.

How accurate and durable is the Yonligonju gauge for professional use?

The gauge head offers a clear scale and a protective rubber buffer to limit shock and scratches; brass fittings and metal adapters ensure repeatable, reliable sealing. The oil-resistant hose resists heat and flex fatigue, making the set suitable for repeated diagnostic tasks in a workshop or mobile service environment.

• Clear dual-display face for quick reading under the hood.
• Shockproof rubber cover reduces accidental damage.
• Brass fittings resist corrosion and provide reliable seals.
• High-grade metal adapters suit frequent use.

What maintenance and storage steps prevent damage?

Keep the gauge and adapters clean of oil residue after each use and store everything in the molded red case to avoid dents and lost parts. Inspect hoses and fittings for cracks or wear before each test and replace any damaged components to ensure accurate readings.

• Wipe oil from hose and gauge after testing.
• Store adapters in numbered slots inside the red case.
• Check hose for nicks and fittings for tight threads regularly.
• Do not exceed 140 PSI; use within recommended range.

Who is this for: The Yonligonju Oil Pressure Tester Tool kit suits home mechanics, mobile technicians and small repair shops needing a portable, reliable pressure gauge for routine diagnostics and confirmation of oil-pump or engine-health repairs. If you perform engine troubleshooting on cars, light trucks, motorcycles or small marine engines and want a rugged kit with multiple adapters and brass fittings, this tool set is designed to meet those needs.