This time-saving kit includes our top of the line 2EM Differential Pressure Tester and the new 18MM-XT Spark Plug Port Extender for effortless leakdown testing at a great value.

Dual-Voltage Spark Plug Cleaner & Tester features the latest in spark plug service equipment. It’s smart, functional styling and rugged construction makes it the perfect choice for anyone who needs to reliably and accurately test spark plugs.

Our Spark Plug Socket features a thin-walled design to get into to the tightest confines. Magnet interior guarantees that you won't accidentally drop the plug. Works with all Champion and Tempest Aviation Spark Plugs.

Our own ATS brand Differential Cylinder Pressure Tester combines the features of our popular 2E tester and a Master Orifice into one tool.

Great package deal featuring our 133 Microstop Countersink plus 4 pilot cutters (1000-100 series) in sizes #40, #30, #21, and #12 all packaged in a custom foam lined case.

Deluxe aviation model with dual channel and audible tone. Designed specifically for aircraft magneto synchronization and engine timing. Eliminates all guesswork and provides a greater safety factor by creating perfect timing quickly and reliably.

Adjusting cable turnbuckles no longer has to be a dreaded ordeal, and you won't need three hands to do it. With our new Turnbuckle Rigging Kit you'll get a complete solution.

A package of 25 pieces 1/8" (copper) CLECOLOK clecos.

A package of 25 pieces 3/32" (silver) CLECOLOK clecos.

Innovative new reversible safety wire twister changes from right hand to left hand twist at the flick of a switch. Positive locking mechanism prevents accidental direction change during series wiring. Assembled in the USA. 6" length

#30 Pilot, 1/2" Diameter. 1/4x28 Thread. 3 flute, 120 degrees. Integral (fixed) pilot for cutting accuracy. High Speed Steel.

John Schwane of Sacramento Sky Ranch authors one of the most definitive manuals on aircraft engine maintenance we’ve ever seen. His comprehensive book takes you from the fundamentals of how an aircraft engine works to the arcane art of engine diagnostics.