Stant's 12370 Mechanical Fuel Cap Tester System is the industry's easiest method for identifying fuel caps that are not in compliance with EPA standards. With the new I/M 240 emissions testing expected to affect more than 50% of all vehicles, fuel cap testing will become very important in the years to come. The tester system's easy-to-read pass/fail gauge makes fuel cap testing simple to perform. And this compact, lightweight, repair grade tester comes with eleven fuel cap adaptors to ensure maximum vehicle coverage.

The 12370 mechanical fuel cap tester can be used by automotive repair or retail outlets to pre-qualify consumers' fuel caps prior to their trip to the state test lanes. The 12370 allows auto parts stores and repair facilities an economical alternative to the electronic testers. The 12370 kit includes the tester unit including the standard threaded adaptor packed inside it's own plastic carrying case, two tester calibration caps to check the tester's accuracy, and eleven fuel cap adapators for various neck configurations in their own plastic carrying case.

The 12370 tester uses the flow comparison method of testing.  The leak rate of the cap is compared to a pre-determined leak rate in the tester.

Fuel Cap Tester Adaptors & Parts
Model No.	Color Code	Description
12403	Blue	1 3/8" Shallow cam adaptor
12404	Yellow	1 3/8" Deep cam adaptor
12405	Red	1 ½" Shallow cam adaptor
12406	Green	1 ½" Deep cam adaptor
12407	Black	1 ½" Shallow cam -- Honda adaptor
12408	Gray	1 3/8" Shallow cam -- Nissan adaptor
12409		Complete set of all adaptors and carrying case
12410	Black	Replacement threaded adaptor that comes attached to tester
12411	Green	"Pass" calibration cap
12412	Red	"Fail calibration cap
12419	Orange	1/8th turn adaptor
12421	Light Blue	GM Quick-on adapter
12422	Tan	Chrysler Quick-on adaptor
12423	Light Green	Quick on style
12424	Natural	Quick on style