Acymner Oil Pressure Tester Kit — 3" Dual-Scale Gauge, 4ft Reinforced Hose, 10 Adapters

The Acymner Oil Pressure Tester Kit is a complete mechanical gauge set for measuring engine oil pressure accurately across most import and domestic vehicles.

Designed for home mechanics and professional technicians, this kit supplies a clear 3" dual-scale gauge (0–140 PSI / 0–10 Bar), a 4-foot reinforced hose, and ten threaded adapters so you can take a reliable pressure reading without guessing from dashboard lights. Built from metal, rubber and ABS components with a shockproof gauge cover, it balances rugged durability with straightforward use.

How do I connect the gauge to my engine quickly?

Locate the engine’s oil pressure test port or the oil sender fitting, remove the factory sender if necessary, then attach the matching adapter and quick coupler. The kit includes both straight and 90° couplers so you can adapt to tight or awkward locations.

• Choose the proper adapter from the numbered set for your thread size.
• Use the straight coupler for easy-access ports or the elbow coupler in cramped spots.
• Hand-tighten connections then pressurize the engine slowly to check readings.

What readings should I expect and how precise is the gauge?

The large 3-inch dial shows both PSI and Bar for clear viewing; the focused short-range graduation makes differences around 1–2 Bar easy to spot. This mechanical gauge gives an instantaneous, repeatable pressure value you can use to evaluate pumps, regulators and internal oil pathways.

• Dial range: 0–140 PSI / 0–10 Bar for wide compatibility.
• 3" face with dual scale for fast interpretation.
• Shockproof rubber cover protects the gauge during shop use.

Which vehicles and situations is this kit compatible with?

The assortment of ten adapters covers most common thread sizes used on domestic and import engines, so the kit works for cars, trucks and many light commercial engines. With a 4-foot nylon-reinforced rubber hose rated to 300 PSI, it handles typical test pressures while keeping you at a safe working distance.

• Includes adapters: R 1/8 DIN, 1/8"-27 NPT, 1/4"-18 NPT, and multiple metric sizes (M10–M18).
• Adapters clearly marked for fast selection during diagnosis.
• Durable materials—copper, aluminum, brass, iron, rubber and ABS—resist shop wear.

How do I interpret results to find faults?

Use the gauge reading as an objective measure of oil delivery: compare your measured pressure against the engine manufacturer’s specifications at idle and at higher RPM. Low or fluctuating pressure indicates potential problems such as worn bearings, a failing pump, clogged pickup, or a faulty regulator, while excessively high pressure suggests a stuck relief valve or blocked return passages.

• Check specs for cold and hot conditions; test at idle and at recommended RPM for comparison.
• Repeat measurements to confirm consistency and rule out false readings from loose fittings.
• If readings fall outside factory limits, follow up with component-level inspection.

Who is this for: The Acymner Oil Pressure Tester Kit is ideal for DIY enthusiasts, mobile mechanics, and shop technicians who need a reliable, portable instrument to verify engine oil pressure without relying on electronic senders. It suits anyone who wants a durable, easy-to-read mechanical gauge with a broad adapter selection for multi-vehicle troubleshooting.