







🔩 Diagnose like a pro, drive with confidence!
The Guteauto Engine Air Valve Holder Pressure Pipe is a precision tool designed for gasoline engines using M12 or M14 spark plugs. It enables quick and reliable cylinder leakage testing by pressurizing the cylinder between 30 and 110 psi, helping professionals and enthusiasts pinpoint exhaust or throttle leaks. Built with durable brass fittings and abrasion-resistant rubber tubing, it features a 1/4" NPT quick coupler for easy air compressor connection, making it an essential diagnostic assistant for Mustang, Ford, GM trucks, and other LS engine vehicles.





| Manufacturer | Guteauto |
| Brand | Guteauto |
| Model | Engine Air Valve Holder Pressure Pipe - 230410gu0025 |
| Item Weight | 5 ounces |
| Package Dimensions | 5.94 x 4.37 x 1.69 inches |
| Manufacturer Part Number | 230410gu0025 |
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