Motorad 12426S fuel cap tester adapter for the 2012-2014 Volkswagen Passat 5-cylinder 2.5L, the 2012-2018 Passat V6 3.6L, the 2014-2017 Passat 4-cylinder 1.8L, the 2018-2021 Passat 4-cylinder 2.0L and other vehicles lets a Stant fuel cap tester check a fuel cap's ability to hold pressure.
A damaged filler neck or a faulty vent or purge part can be behind an evaporative emissions warning light just as a leaking fuel cap can, so find the cause before buying parts. This adapter is for testing the cap, not for replacing it.
The vehicles it fits include the 2011-2013 Volkswagen Jetta 4-cylinder 2.0L or 5-cylinder 2.5L and the 2009-2011 Volkswagen Tiguan 4-cylinder 2.0L, along with many Audi, BMW and Mercedes-Benz models. If your car is not named here, look up its year and engine on the Buyer's Guide tab.
Fit and size
Build and materials
One fuel cap tester adapter with a gasket or seal; the quantity per application is one. A hose, fittings and a carrying case are not included.
Interchange: 12426
This part cross-references / interchanges with the following part numbers:
Does the Motorad 12426S adapter fit the 2012-2014 Volkswagen Passat 5-cylinder 2.5L?
Yes. Motorad 12426S fits the 2012-2014 Volkswagen Passat 5-cylinder 2.5L. Other years and engines are on the Buyer's Guide tab.
Does this fuel cap tester adapter come with a hose or fittings?
No. This listing is one adapter with a gasket or seal. A hose, fittings and a carrying case are not included.
What are the end and neck diameters of the Motorad 12426S adapter?
End 1 measures 2.25 in (57.15 mm) outside, end 2 measures 1.37 in (34.80 mm) inside, and the neck is 1.81 in (45.97 mm). Height is 2.84 in (72.14 mm).
Will this adapter work with a Stant fuel cap tester?
Yes. Motorad 12426S is made for use with Stant fuel cap testers, so the tester can test whether a cap holds pressure.
What is this fuel cap tester adapter made of?
This adapter is made of plastic and attaches by screwing on. It is color coded for easy identification.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
