
Engineered for rapid, effective, and pinpoint diagnostics. This professional kit lets you compare return fuel amounts to immediately isolate faulty injectors. Complete with premium copper adapters for Bosch, Siemens, Denso, and Delphi systems.




The OlexAzin oil pressure tester kit compares the amount of fuel returned to the deposit tank across each cylinder, allowing you to instantly identify and isolate the exact injector causing engine hiccups.
Stop buying separate diagnostics accessories. Our versatile kit includes custom-engineered adapters for Bosch, Siemens, Denso, and Delphi fuel injectors, covering virtually all major vehicle models.


Diagnose complex engine blocks with ease. OlexAzin is suited for engines up to 6 cylinders, complete with six of each specialized adapter and clear direct-measurement reservoirs.



"The OlexAzin oil pressure tester kit provides workshop-level accuracy at an unbeatable price point. It streamlines injector diagnostics and helps solve flow issues in a fraction of the time."
– Dave Sterling, Master Auto Diagnostic Expert


Compare returned fuel amounts in separate containers effortlessly. Pinpoint and solve issues with your fuel return and oil pressure system systematically.

Equipped with custom high-grade adapters designed for a perfect fit with the automotive industry's most common injector configurations.

Complete diagnostic coverage for engines with up to 6 cylinders. Includes six pieces of each high-grade diagnostic adapter.


Integrated reservoirs allow you to visual-test engine and fuel delivery return levels instantly, reducing complex math and manual labor.

Constructed with industrial-quality copper and hardened plastic. Resists shop floor wear, chemicals, oils, and intense mechanical pressure.

Allows standard flow meter kits to be deployed with a wider variety of injectors, extending your existing garage tool capabilities.











We understand shop and garage operations depend on quick diagnostic routines. That's why our customer support team is trained in automotive maintenance, ready to answer setup questions anytime.
Frequently Asked Questions
Finally, a pressure and injector return flow diagnostic kit that doesn't leak. The copper adapters fitted perfectly onto my Delphi injectors. Easily isolated a faulty cylinder!

Outstanding quality. It lets me test 6 injectors rapidly and reliably. The direct reservoirs make visual flow comparisons simple. Worth every penny.

Incredible kit for auto shop testing. Standard diagnostic devices are overpriced, but OlexAzin delivers massive value with professional-grade copper connectors. Unbelievable durability.
