GM 3983489 Nos Cam Bearings 140

( Brand: Gm ), ( Part Type: Bearing Cam ), ( Manufacturer Warranty: No ), ( Manufacturer Part Number: 3983489 ), ( Country Of Origin: United States )

Review GM Chevrolet Nos 140 Cam Bearings fits VEGA MONZA 1971–1977

The GM 3983489 1971-1977 Chevrolet Vega Monza NO. 140 Cam Bearings are an essential component of the engine's camshaft system. These bearings facilitate the smooth rotation of the camshaft, which in turn controls the opening and closing of the vehicle's intake and exhaust valves.

These cam bearings are specifically designed for use in the Chevrolet Vega Monza models produced between 1971 and 1977. They are manufactured to meet the original equipment specifications, ensuring a precise fit and reliable performance. Each bearing is made from high-quality materials, such as steel and bronze, to provide durability and resistance to wear and tear.

The bearings feature a press-in design, allowing for easy installation and removal. They come in sets of four, with each bearing designed to accommodate a specific position on the camshaft. The bearings also include retaining clips, which help to securely hold the bearings in place on the camshaft and prevent them from coming loose during operation.

The GM 3983489 1971-1977 Chevrolet Vega Monza NO. 140 Cam Bearings are engineered to meet the demanding requirements of the Chevrolet Vega Monza's engine. They are designed to provide quiet operation, minimal friction, and long-lasting performance. These bearings are an excellent choice for anyone looking to maintain the reliability and performance of their classic Chevrolet Vega Monza.

If you're in need of a replacement for your worn-out or damaged cam bearings, the GM 3983489 1971-1977 Chevrolet Vega Monza NO. 140 Cam Bearings are the ideal solution. With their precise fit, high-quality materials, and reliable performance, these bearings will help keep your Chevrolet Vega Monza running smoothly and efficiently.

Buying GM part number 3983489, which is the camshaft bearing set for 1971-1977 Chevrolet Vega Monza with 140 HP, can be a crucial decision for vehicle owners looking to maintain or upgrade their engines. Here are some potential pros and cons to consider before making a purchase:

1. OEM (Original Equipment Manufacturer) part: Purchasing this part directly from GM ensures that it is designed specifically for your vehicle and meets original factory specifications.

2. Ensures engine reliability: Worn or failing camshaft bearings can cause engine damage, misfires, and poor performance. Replacing them with new ones can help prevent these issues and improve overall engine health.

3. Improved engine performance: Upgrading to higher-quality aftermarket camshaft bearings can potentially provide better engine performance, such as increased horsepower and torque.

4. Availability: GM part 3983489 is readily available from various sources, including GM dealerships, auto parts stores, and online retailers.

1. Cost: OEM parts, especially for older vehicles, can be more expensive than aftermarket alternatives.

2. Installation complexity: Installing camshaft bearings requires engine disassembly, which can be a time-consuming and labor-intensive process.

3. Potential for other engine issues: Worn camshaft bearings could be a symptom of other engine problems, such as worn piston rings, valve guides, or camshaft lobes. Replacing only the bearings might not fully resolve the underlying issue.

Deciding to buy GM part number 3983489 for your 1971-1977 Chevrolet Vega Monza with 140 HP largely depends on your specific situation, including the current condition of your engine, your budget, and your desired level of performance. If you are experiencing engine issues, it is essential to address the worn camshaft bearings to prevent further damage and maintain engine reliability. Considering the pros and cons, purchasing the OEM part can ensure that you get a high-quality, factory-designed component that will fit your engine perfectly.

If you are experiencing issues with your camshaft bearings or want to prevent potential engine problems, it is recommended to purchase GM part number 3983489 as a replacement. Ensure that you have the necessary tools, skills, and time to install the new bearings or consider hiring a professional mechanic to do the job for you. If you're on a tight budget, explore aftermarket alternatives, but keep in mind that they might not provide the same level of quality and reliability as OEM parts.

Details:

Sorry, only have these two bearings, as shown, not a set. Brand new, never unwrapped since new. 1975 - 1977 Pontiac Aster and Sunbed.

1971-1977 Chevrolet Vega Monza NOS 140 cam bearings 3983489: genuine GM bearings, part number 3983489, and they fit positions 2, 3, 4 or 5.These fit:1971 - 1977.

part #: 3983489 prices

• $6.49-$16.99

specifications engibearing:

• for models: Vega, Monza
• for makes: Chevrolet
• for years: 1971-1977
• brand: Gm
• part type: Bearing Cam
• manufacturer warranty: No
• manufacturer part number: 3983489
• country of origin: United States

payments engibearing:

• credit card: Visa
• wallet: Apple-pay
• other

general engibearing:

• Car Truck Parts Accessories > Engines Engine Parts > Engine Bearings
• condition: Used

seller engibearing:

• rating: 100.0%
• city: Toledo, Ohio
• # reviews: 19244

shipping engibearing:

• cost: $10.60
• service: USPS First Class
• class: Standard
• transit: 17-27 Days
• type: Calculated
• carrier: USPS

returns engibearing:

• policy: No Returns

offer engibearing:

• started: May 31, 2026
• options: Ship-to-home
• quantity: 1
• sold: 0
• availability: In Stock

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