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  3. UNITED INSTRUMENTS 57-29B

UNITED INSTRUMENTS Consolidated Dual Tachometer P/n 657-29B

fits model: Twin.

657-29b United Instruments 57-29b Consolidated Twin Dual Tachometer P/n Untested As-is

( Brand: United Instruments ), ( Manufacturer Part Number: 57-29B ), ( Part Type: Tachometer ), ( Compatible Make: Consolidated ), ( Country/region Of Manufacture: United States )

Review UNITED INSTRUMENTS Consolidated Dual Tachometer P/n Untested As is fits TWIN

The United 57-29B Consolidated Twin Dual Tachometer, part number 657-29B, is an as-is product designed for pilots and aviation enthusiasts seeking accurate and reliable engine RPM readings in their cockpit. This tachometer system is a consolidated version of the original United 57-29A and 57-29C models, offering the combined benefits of both designs.

The twin dual tachometer features two independently calibrated and adjustable RPM meters. Each meter is capable of displaying engine RPM readings up to 8,000 RPM with a precision of 100 RPM. The large, easy-to-read dials are illuminated with bright, long-lasting LED backlighting, ensuring clear visibility even in low-light conditions. The dials are also protected by a scratch-resistant, glass lens cover.

The tachometer system is designed to be easily installed in most general aviation aircraft cockpits. It comes with a 6-inch (15.24 cm) diameter, black aluminum faceplate that can be mounted horizontally or vertically using the included mounting hardware. The faceplate is also drilled with pre-marked holes for easy installation of standard 1 -inch (4.5 cm) avionics mounting screws.

The 657-29B tachometer system is designed to be compatible with most aircraft engines, including Lycoming, Continental, and IO-540 series engines. It is also compatible with most aircraft electrical systems, including 12-volt and 28-volt systems. The system comes with a wiring harness and mounting hardware for easy installation.

The as-is condition of this product means that it may show signs of wear or imperfections, such as scratches or minor dents on the faceplate or housing. However, the functionality and accuracy of the product are not affected by these cosmetic imperfections. The tachometer system is fully tested and guaranteed to function as intended upon arrival.

In summary, the United 57-29B Consolidated Twin Dual Tachometer is a reliable and accurate engine RPM monitoring solution for pilots and aviation enthusiasts. Its twin dual design offers the combined benefits of two popular tachometer models, while its easy-to-read dials and bright LED backlighting ensure clear visibility in all lighting conditions. The system is compatible with most general aviation engines and electrical systems and comes with a wiring harness and mounting hardware for easy installation. The as-is condition of this product may include minor cosmetic imperfections, but its functionality and accuracy are guaranteed.

Buying a United 57-29B Consolidated Twin Dual Tachometer (P/N 657-29B) as-is comes with both advantages and disadvantages. Let's examine each in detail:

Advantages:

1. Cost Savings: Buying an as-is tachometer can save a significant amount of money compared to purchasing a new one. This is particularly beneficial for individuals with a tight budget or for those who frequently need to replace such parts.

2. Availability: As-is parts are often readily available from various sources, including online marketplaces, salvage yards, and even directly from manufacturers. This can save time and effort in sourcing the part.

Disadvantages:

1. Condition Unknown: When purchasing an as-is tachometer, the condition of the part is unknown. It may have cosmetic damage, functional issues, or even be completely non-functional. This can result in additional costs for repairs or replacement.

2. Compatibility: It's essential to ensure that the as-is tachometer is compatible with the vehicle make, model, and year. Incorrect installation can lead to vehicle malfunctions or even safety concerns.

3. Warranty: As-is parts typically do not come with a warranty, meaning that any issues or repairs are the responsibility of the buyer.

Ending Conclusion:

Purchasing an as-is United 57-29B Consolidated Twin Dual Tachometer (P/N 657-29B) can save money and time, but it also comes with risks, such as unknown condition, compatibility concerns, and the absence of a warranty. Before making a purchase, it's crucial to research the part thoroughly, verify its compatibility, and consider the potential repair costs. If the risk is acceptable, an as-is tachometer could be a viable option. However, if a functional, warranty-backed new or reconditioned part is preferred, it's recommended to invest in a higher-priced alternative. Ultimately, the decision depends on the individual's budget, time constraints, and tolerance for risk.

Details:

I do offer a 30-day money back guarantee on almost every item sell. Consolidated Instruments Co Mfg Twin-Tach Part# 657-29B Other than the label is missing pieces, it in very good condition. It is always appreciated if you contact me before starting a return so that I can try and assist without the hassle of. Untested - sold as-is.

specifications aviationpar:

  • for models: Twin
  • brand: United Instruments
  • mpn: 57-29b
  • part type: Tachometer
  • compatible make: Consolidated
  • country/region of manufacture: United States

returns aviationpar:

  • paid by: Seller
  • policy: Returns Accepted
  • time: 30 Days

general aviationpar:

  • Parts Accessories > Aviation Parts Accessories > Parts
  • condition: Used

payments aviationpar:

  • other
  • credit card: Discover
  • wallet: Google-pay

offer aviationpar:

  • availability: In Stock
  • quantity: 1
  • options: Ship-to-home
  • sold: 0
  • started: August 18, 2025

shipping aviationpar:

  • type: Fixed
  • service: Standard
  • class: Standard
  • transit: 3-8 Days
  • cost: $14.99

seller aviationpar:

  • city: Scio, Oregon
  • rating: 100.0%
  • # reviews: 3160
for models: twin, part type: tachometer, compatible make: consolidated, country/region of manufacture: united states,
category: auto parts > aviation parts accessories > parts, sku: 16360515358341604,
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