GM 3987918 Nos Speedometer Gear Muncie Saginaw 18-TOOTH

( Brand: Gm ), ( Manufacturer Part Number: 3987918 ), ( Part Type: Speedometer Gear )

Review GM New Nos 18-tooth Brown Speedometer Gear Muncie Saginaw Chevy fits CORVETTE

The GM 3987918 18-tooth speedometer gear is specifically designed for Muncie Saginaw steering columns, as used in various Chevrolet models, including the Corvette. This gear is an essential component of the vehicle's speedometer system.

Measuring 1.6 inches in diameter and 1.8 inches long, this gear is precision-engineered to ensure accurate and reliable speed readings. Its 18 teeth are evenly spaced and finished to high standards, providing a smooth operation for the speedometer mechanism.

Made from durable, heat-treated steel, this gear is designed to withstand the rigors of continuous use in automotive applications. Its surface is finished with a hardened coating for added durability and resistance to wear and tear. The gear's teeth are also precision-cut to ensure a positive engagement with the speedometer cable, providing accurate and consistent speed readings.

This gear is easy to install, requiring only a simple replacement of the existing worn-out or damaged gear. It comes complete with the necessary mounting hardware, ensuring a hassle-free installation process. The gear is also designed to fit seamlessly with the existing Muncie Saginaw steering column, making it a direct replacement for faulty or worn-out gears.

In summary, the GM 3987918 18-tooth speedometer gear is a high-quality and reliable replacement for Muncie Saginaw steering columns used in Chevrolet Corvettes and other models. Its precision engineering, durable construction, and ease of installation make it an excellent choice for vehicle owners seeking to maintain the accuracy and functionality of their speedometer system.

Pros and Cons of Buying a 18-tooth Speedometer Gear for a Muncie Saginaw Transmission in a Chevrolet Corvette

The Muncie Saginaw transmission is a three-speed manual transmission used in various Chevrolet models, including the Corvette, between 1962 and 1974. One common issue with these transmissions is the worn-out speedometer gear, which affects the accuracy of the vehicle's speedometer. Replacing the speedometer gear with a new one can resolve this issue. Here, we will discuss the pros and cons of buying an 18-tooth speedometer gear (GM part number 3987918) for a Muncie Saginaw transmission in a Chevrolet Corvette.

1. Improved Accuracy: Replacing the worn-out speedometer gear with a new one ensures that the vehicle's speedometer displays accurate speed readings, enhancing the driving experience.

2. Easy Installation: The speedometer gear is a straightforward component to replace, and the process does not require extensive mechanical knowledge or specialized tools.

3. Reliable and Durable: A new speedometer gear is designed to last longer than the original one, providing reliable and durable performance.

4. Cost-Effective: Compared to other transmission repairs, replacing the speedometer gear is a cost-effective solution for restoring the accuracy of the speedometer.

1. Availability: Original equipment manufacturer (OEM) speedometer gears can be difficult to find, and you may need to search various sources to locate one.

2. Cost: While the cost of a new speedometer gear is relatively low compared to other transmission repairs, it may still be a significant investment for some vehicle owners.

3. Potential for Additional Repairs: Worn-out speedometer gears can be a symptom of more extensive transmission issues, so replacing the gear may lead to the discovery of additional repairs needed.

In conclusion, replacing a worn-out speedometer gear (GM part number 3987918) with a new one for a Muncie Saginaw transmission in a Chevrolet Corvette can improve the accuracy of the speedometer, restore reliable performance, and enhance the driving experience. However, the process may involve some effort to locate an OEM gear, and the cost could be a consideration for some vehicle owners. Ultimately, the decision to buy a new speedometer gear depends on the individual's priorities, budget, and the vehicle's overall condition.

If you are experiencing issues with your Chevrolet Corvette's speedometer and suspect that the speedometer gear may be worn out, consider replacing it with a new one. The benefits, such as improved accuracy and reliable performance, often outweigh the potential drawbacks, like the availability and cost. To ensure the best possible outcome, consult a reputable parts supplier or transmission specialist for guidance on sourcing and installing the new speedometer gear.

Details:

New NOS GM gear, part number 3987918. See pics for condition. Part is dusty/dirty and shows some patina from handling sitting on the shelf. Please verify part number and pics match your application.

part #: 3987918 prices

• $23.79-$118.80

specifications manutransmission:

• for models: Corvette
• for makes: Chevy
• brand: Gm
• mpn: 3987918
• part type: Speedometer Gear

offer manutransmission:

• options: Ship-to-home
• best offers: True
• started: September 2, 2025
• sold: 0
• availability: In Stock
• quantity: 1

returns manutransmission:

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

shipping manutransmission:

• service: USPS Ground Advantage
• class: Standard
• type: Calculated
• carrier: USPS
• transit: 3-9 Days
• cost: $0.00

payments manutransmission:

• wallet: Apple-pay
• credit card: Diners-club
• other

seller manutransmission:

• # reviews: 30827
• city: Sheboygan Falls, Wisconsin
• rating: 100.0%

general manutransmission:

• Car Truck Parts Accessories > Transmission Drivetrain > Manual Transmission Parts
• condition: New other see details

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