General Motors J-26999-30 Compression Test Adapter Alt. (1722-L, AM-J-26999-30)
The General Motors J-26999-30 Compression Test Adapter is a specialty tool for performing cylinder compression tests on various GM diesel engines. This high-quality aftermarket adapter features 10mm-1.00 threads for testing at the glow plug port and a 1/4 NPT fitting for connecting to compression test gauges.
Applications:
- GM 4.3L, 5.7L, 6.2L, and 6.5L Turbo Diesel engines
- Compatible with J-6692-B, 303-D092, AM-303-D092, or J-26999 Compression Test Gauges
This tool is essential for mechanics working on GM diesel engines. It ensures accurate and reliable compression readings by securely threading into the glow plug port and attaching it to the gauge's quick-connect fitting.
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