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  1. Electronics International EI E1P

    EGT Set with Overtemp Single

    $389.00
    $389.00
    Item Qualifies for Free Ground Freight (48 States) on Orders Over $350
  2. Electronics International EI E2

    EGT Kit Twin

    $645.00
    $645.00
    Item Qualifies for Free Ground Freight (48 States) on Orders Over $350
  3. Electronics International EI E4

    EGT 4 Cylinder Multi-Cylinder

    $725.00
    $725.00
    Item Qualifies for Free Ground Freight (48 States) on Orders Over $350
  4. Electronics International EI E6

    EGT 6 Cylinder, Multi-Cylinder

    $825.00
    $825.00
    Item Qualifies for Free Ground Freight (48 States) on Orders Over $350
  5. Electronics International EI EAC1

    EI EAC-1 - CHT/EGT/OAT Kit for Singles, STC, FAA-PMA, TSO

    $525.00
    $525.00
    Item Qualifies for Free Ground Freight (48 States) on Orders Over $350
  6. In Stock
    Electronics International EI EC1

    CHT/EGT Kit Single

    $475.00
    $475.00
    Item Qualifies for Free Ground Freight (48 States) on Orders Over $350
  7. Electronics International EI EC1P

    CHT/EGT Kit Single with Overtemp

    $795.00
    $795.00
    Item Qualifies for Free Ground Freight (48 States) on Orders Over $350
  8. Electronics International EI EC2

    CHT/EGT Kit Twin

    $825.00
    $825.00
    Item Qualifies for Free Ground Freight (48 States) on Orders Over $350
  9. In Stock
    Electronics International EI M1

    EI M-1 - Manifold Pressure Functional Mode Gauge

    $575.00
    $575.00
    Item Qualifies for Free Ground Freight (48 States) on Orders Over $350
  10. Electronics International EI R4

    EI R-1 Tachometer, for 4 Cylinder Engines

    $548.00
    $548.00
    Item Qualifies for Free Ground Freight (48 States) on Orders Over $350
  11. Electronics International EI R6

    EI R-1 Tachometer, for 6 Cylinder Engines

    $548.00
    $548.00
    Item Qualifies for Free Ground Freight (48 States) on Orders Over $350
  12. Electronics International EI R8

    EI R-1 Tachometer, for 8 Cylinder Engines

    $548.00
    $548.00
    Item Qualifies for Free Ground Freight (48 States) on Orders Over $350
  13. Mitchell MIT D1-112-5223

    2 1/4" Recording Tachometer, 2300 RPM Cruise

    $365.00
    $365.00
    Item Qualifies for Free Ground Freight (48 States) on Orders Over $350
  14. Mitchell MIT D1-112-5225

    2 1/4" Recording Tachometer, 2566 RPM Cruise

    $359.00
    $359.00
    Item Qualifies for Free Ground Freight (48 States) on Orders Over $350
  15. Mitchell MIT D1-211-5049

    Oil Pressure Gauge, 2 1/4" 0-145 psi, for Rotax

    $96.95
    $96.95
    Item Qualifies for Free Ground Freight (48 States) on Orders Over $350
  16. In Stock
    Mitchell MIT D1-211-5051

    Exhaust Gas Temp Kit, 250-1600 deg F Gauge

    $199.95
    $199.95
    Item Qualifies for Free Ground Freight (48 States) on Orders Over $350
  17. Mitchell MIT D1-211-5052

    Oil Pressure Gauge, 2 1/4" 0-80 psi

    $84.50
    $84.50
    Item Qualifies for Free Ground Freight (48 States) on Orders Over $350
  18. Mitchell MIT D1-211-5056

    Oil Pressure Gauge, 2 1/4" 0-100 psi

    $84.50
    $84.50
    Item Qualifies for Free Ground Freight (48 States) on Orders Over $350
  19. Mitchell MIT D1-211-5058

    Oil Pressure Kit, 2 1/4" 0-150 psi

    $84.50
    $84.50
    Item Qualifies for Free Ground Freight (48 States) on Orders Over $350
  20. In Stock
    Mitchell MIT D1-211-5062

    Fuel Pressure Gauge, 2 1/4" 0-15 psi

    $87.50
    $87.50
    Item Qualifies for Free Ground Freight (48 States) on Orders Over $350
  21. In Stock
    Mitchell MIT D1-211-5063

    Fuel Pressure Gauge, 2 1/4" 0-30 psi

    $94.50
    $94.50
    Item Qualifies for Free Ground Freight (48 States) on Orders Over $350
  22. Mitchell MIT D1-211-5074

    Fuel Level Gauge, 2 1/4", 10-180 Ohm

    $94.50
    $94.50
    Item Qualifies for Free Ground Freight (48 States) on Orders Over $350
  23. Mitchell MIT D1-211-5086

    Voltmeter gauge, 2 1/4" 8-16 volt DC

    $81.50
    $81.50
    Item Qualifies for Free Ground Freight (48 States) on Orders Over $350
  24. Mitchell MIT D1-211-5088

    Oil Temperature Gauge, 2 1/4" 250 degree F Oil or Water PMA

    $93.50
    $93.50
    Item Qualifies for Free Ground Freight (48 States) on Orders Over $350
  25. Out of Stock
    Mitchell MIT D1-211-5090

    Oil Temperature Gauge, 2 1/4" 300 degree F Oil PMA

    $93.50
    $93.50
    Item Qualifies for Free Ground Freight (48 States) on Orders Over $350
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Engine Instruments

Aircraft engine instruments are crucial for any pilot to access essential engine information, such as fuel quantity, fuel flow and oil pressure. Chief Aircraft Inc. offers an extensive collection of engine instruments so you can ensure your aircraft is operating as it should. Browse our selection today.

Purpose of Aircraft Engine Instruments

In any aircraft, it's important to accurately measure operating parameters such as fuel flow and levels, electrical loads and pressure. When it comes to the engine specifically, pilots need to know exactly how the aircraft is operating at all times with accurate, real-time information. This allows them to adjust as necessary to ensure the engine runs as it should during flight. Typical information that engine instruments display includes:

  • Oil pressure: This gauge indicates whether the oil pressure is within operating limits so the engine gets the lubrication it needs.
  • Exhaust gas temperature: The exhaust stream temperature is monitored to help prevent temperature-related damage to engine components.
  • Oil temperature: Oil may lose its lubrication properties when its temperature is too high.
  • Engine pressure ratio (EPR): This is the total pressure across a jet engine.
  • Torque: A torque meter measures the amount of torque being produced by the engine.
Aircraft engine instruments are one of the three basic sets of aircraft instruments — the other two being flight instruments and navigation instruments — that pilots rely on for a safe and successful flight.

Our Extensive Supply of Engine Instruments

At Chief Aircraft Inc., we supply a wide range of engine instruments from reputable manufacturers, including Electronics International, JP Instruments and Superior Labs, Inc. We make your shopping experience much easier by letting you find the instruments you need using helpful categories. You can save by shopping our Electronics International Engine Monitors or the JPI EDM Series including the 4 Cylinder Engine Data Monitor 730 System. You can also browse by manufacturer and instrument type, such as tachometers from Mitchell, Superior Labs or UMA. We also stock probes and senders from Insight Instruments, Mitchell and UMA. Find manifold pressure gauges from UMA, oil temperature gauges from Mitchell and other essential engine instruments.

Shop Our Inventory of Aircraft Engine Gauges for Your Instrumentation Needs

Not sure which aircraft engine management systems will fulfill your requirements? With more than 40 years of experience in supplying quality engine instruments and other aviation equipment, our staff can answer whatever question you bring to us. Browse our selection of aircraft engine instruments today for your aircraft. You can also contact our team if you have questions and to find out more information on the instruments of your choice.