THE LEWIS ENGINEERING COMPANY 47B41B Temperature Indicator 310 421

( Brand: The Lewis Engineering Company ), ( Manufacturer Part Number: 47B41B ), ( Part Type: Indicator )

Review THE LEWIS ENGINEERING COMPANY Cessna 310 421 Temperature Indicator fits 340

The Lewis Engineering 47B41B Temperature Indicator is a high-precision avionics component designed specifically for use in Cessna 310, 340, and 421 aircraft models. This temperature indicator is an essential addition to your aircraft's instrument panel, providing crucial real-time information about engine oil temperature and coolant temperature.

The 47B41B Temperature Indicator is engineered with the latest technology, ensuring both accuracy and reliability. The indicator's design features a red and yellow warning scale, enabling pilots to easily monitor temperatures and quickly identify any potential issues. The red zone indicates when the oil temperature is too high, while the yellow zone signifies a coolant temperature that may require attention.

Measuring approximately 3.5 inches in diameter, this temperature indicator boasts a sleek, modern design that seamlessly integrates with the cockpit's existing instrumentation. The indicator's face is backlit with a bright, easy-to-read white light, ensuring that critical temperature data remains visible in all lighting conditions.

The Lewis Engineering 47B41B Temperature Indicator is built to meet the rigorous demands of aviation applications. This temperature indicator is constructed from high-quality materials, including a robust aluminum housing, ensuring durability and resistance to harsh environmental conditions. Additionally, it is designed to meet FAA TSO-C136a and FAA TSO-C161b standards, providing peace of mind to pilots and maintenance personnel alike.

Installation of the 47B41B Temperature Indicator is straightforward, requiring minimal modifications to your aircraft's existing wiring harness. The temperature indicator comes complete with all necessary hardware and clear, concise installation instructions, ensuring a hassle-free installation process.

In summary, the Lewis Engineering 47B41B Temperature Indicator is a high-performance, reliable, and easy-to-install avionics component that is an essential addition to any Cessna 310, 340, or 421 aircraft. With its accurate temperature readings, sleek design, and rugged construction, this temperature indicator is the ideal choice for pilots seeking to enhance their aircraft's instrumentation and improve overall flight safety.

Pros and Cons of Buying a Lewis Engineering 47B41B Temperature Indicator for Cessna 310, 340, and 421 Aircraft

The Lewis Engineering 47B41B Temperature Indicator is a popular aftermarket avionics upgrade for Cessna 310, 340, and 421 aircraft. This device provides accurate and reliable engine temperature information to pilots, enhancing safety and operational efficiency. In this analysis, we will discuss the key benefits and potential drawbacks of investing in this temperature indicator.

1. Improved Accuracy: The Lewis Engineering 47B41B Temperature Indicator offers superior temperature sensing capabilities compared to the original equipment. This results in more precise temperature readings, ensuring better engine health monitoring and potential for early problem detection.

2. Enhanced Safety: By providing more accurate and reliable temperature information, this device helps pilots make informed decisions about engine operation, potentially preventing engine overheating or damage.

3. Easy Installation: The Lewis Engineering temperature indicator is designed to fit seamlessly into the existing instrument panel of Cessna 310, 340, and 421 aircraft, requiring minimal modifications or custom work.

4. Improved Reliability: The Lewis Engineering 47B41B Temperature Indicator is built using high-quality components and undergoes rigorous testing, ensuring long-term durability and reliability.

5. Increased Resale Value: Installing a Lewis Engineering temperature indicator can be an attractive feature for potential buyers when selling your aircraft, as it demonstrates a commitment to safety and maintenance.

1. Cost: The Lewis Engineering 47B41B Temperature Indicator is an investment, with a higher price tag compared to the standard equipment. However, the enhanced safety, accuracy, and reliability features may justify the cost for some pilots.

2. Complexity: While the installation process is relatively straightforward, there may be some complexity involved in calibrating and integrating the new temperature indicator with the existing avionics system. It is essential to consult the manufacturer's instructions or seek professional assistance to ensure proper installation and operation.

The Lewis Engineering 47B41B Temperature Indicator offers several significant advantages for pilots of Cessna 310, 340, and 421 aircraft, including improved accuracy, enhanced safety, easy installation, increased reliability, and potential resale value. However, its higher cost and potential complexity during installation may be a drawback for some pilots. Ultimately, the decision to purchase this temperature indicator depends on individual priorities, budget, and the importance placed on precise engine temperature monitoring.

For pilots who prioritize safety, accuracy, and reliability in their aircraft's engine temperature monitoring, the Lewis Engineering 47B41B Temperature Indicator is a worthwhile investment. It can provide peace of mind, enhance operational efficiency, and potentially prevent engine damage or failure. However, careful consideration of the cost and installation complexity is essential before making a purchase.

Details:

Very clean item. 12V and 24V indicator. Airworthiness is to be determined only by the person or persons installing said item on Aircraft. Used on Cessna's, Pipers as well most other types of aircraft.

50094, 2 1/4 Twin Cessna 310, 340, 421 Temperature Indicator. Manufactured by The Lewis Engineering Company.: 2 1/4 Twin Cessna 310, 340, 421 Temperature Indicator. All manuals are sold for reference purposes only and do not necessarily reflect current updates.

part #: 47b41b price

• $84.99

specifications aviationpar:

• for models: 340
• for makes: Cessna
• brand: The Lewis Engineering Company
• mpn: 47b41b
• part type: Indicator

offer aviationpar:

• quantity: 1
• started: October 17, 2025
• options: Ship-to-home
• availability: In Stock
• sold: 0

returns aviationpar:

• policy: No Returns

general aviationpar:

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

payments aviationpar:

• credit card: Mastercard
• other
• wallet: Paypal

seller aviationpar:

• # reviews: 9241
• rating: 98.5%
• city: Ladonia, Texas

shipping aviationpar:

• service: USPS Ground Advantage, USPS Priority Mail, FedEx Ground / FedEx Home Delivery
• carrier: USPS, FedEx
• transit: 5-11 Days
• type: Calculated
• class: Standard, Expedited
• cost: $17.90

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