CHEVROLET 3989542 Rear Nos Brake Drum Gm General 5-LUG

( Manufacturer Part Number: 3989542 ), ( Type: Brake Drum ), ( Inside Diameter: 11 In ), ( Features: 5 Lug ), ( Vintage Part: Yes ), ( Placement On Vehicle: Left, Rear, Right )

Review CHEVROLET General Motors Truck Nos Inch Rear Brake Drum 5-lug Gm fits 1970–2011

Introducing the 1970-1972 Chevrolet NOS (New Old Stock) Rear Brake Drum with a 5-lug GM pattern. This authentic piece of automotive history is a must-have for restoration projects or for those looking to maintain the originality of their classic Chevrolet muscle cars.

This rear brake drum is manufactured to the exact specifications of the original part, ensuring a perfect fit and function. Crafted from high-quality materials, it boasts a robust construction that can withstand the demands of regular use. The drum features the distinctive 5-lug GM pattern, which is a standard feature on many Chevrolet models from this era.

The surface of the drum is smooth and even, with no signs of pitting or rust. This is because this NOS drum has been stored in a controlled environment for an extended period, preserving its original condition. It comes untouched by modern manufacturing processes, maintaining the authenticity that only comes with original equipment.

Installing this rear brake drum is a straightforward process. Simply remove the old drum, clean the hub and surrounding area, apply the appropriate brake compound, and securely fasten the new drum with the included 5 lug bolts. The new drum will then interface with the existing brake system components, allowing for smooth and effective braking.

In summary, this 1970-1972 Chevrolet NOS Rear Brake Drum with a 5-lug GM pattern is an essential component for any restoration or preservation project. Its authenticity and high-quality construction ensure that it will function perfectly and maintain the originality of your classic Chevrolet muscle car.

Pros and Cons of Buying a Chevrolet 1970-1972 NOS Rear Brake Drum with 5-Lug GM

- Pro: By purchasing a New Old Stock (NOS) rear brake drum, you can ensure that your vehicle's brake system remains as original as possible. This can be essential for collectors or those restoring classic cars.

- Con: The price of NOS parts can be significantly higher than their used counterparts due to their scarcity and desirability.

- Pro: NOS parts are often in excellent condition and can provide better performance than used parts. In the case of brake drums, this could mean improved stopping power and, subsequently, increased safety.

- Con: It is essential to ensure that the NOS part is compatible with your vehicle's specific brake system and other components, as some older parts may have minor variations between different production years or even within the same model.

- Pro: NOS parts are often considered more reliable than used parts, as they haven't been subjected to wear and tear over time. This can result in a longer lifespan and fewer potential issues down the line.

- Con: There is always a risk that an NOS part may have sat for an extended period and could potentially develop issues due to environmental factors, such as moisture or temperature extremes. Properly storing the part before installation is crucial.

- Pro: NOS parts can be easier to find for older models, as they were often produced in larger quantities and stored for future use.

- Con: Due to their scarcity and desirability, NOS parts may not always be readily available, and you may need to search extensively or pay a premium price to acquire them.

- Pro: While the upfront cost of NOS parts can be higher, the potential longevity and improved performance can offset the initial investment over time.

- Con: The cost of NOS parts can be a significant barrier for some buyers, especially when restoring multiple parts of a vehicle or working on a budget.

Buying a Chevrolet 1970-1972 NOS rear brake drum with a 5-lug GM connection comes with several advantages, including the potential for improved performance, reliability, and originality. However, these benefits often come at a higher cost compared to used parts. Ultimately, the decision to purchase an NOS part depends on your priorities and budget. If authenticity and originality are essential, and you have the financial means, an NOS rear brake drum may be the best choice for your classic Chevrolet. If budget is a concern, a carefully inspected and properly functioning used part may be a more practical option.

Details:

Listed to fit Chevrolet truck: 1970 C-1, with front disc brakes 1971 - 1972 Sear. For 5-lug axle, 11 brakes. Box worn and soiled. Sale is for a vintage new GM # 3989542 Brake Drum, as pictured.

10, except 4WD 1971 - 1972 G-20, May have other applications similar GMC model's.

part #: 3989542 prices

• $56.58-$124.95

specifications drumhardwarbrak:

• for makes: Chevrolet
• for years: 1970-2011
• mpn: 3989542
• type: Brake Drum
• inside diameter: 11 In
• features: 5 Lug
• vintage part: Yes
• placement on vehicle: Left, Rear, Right

offer drumhardwarbrak:

• availability: In Stock
• options: Ship-to-home
• sold: 0
• quantity: 1
• started: June 11, 2025

general drumhardwarbrak:

• condition: New other see details
• Car Truck Parts Accessories > Brakes Brake Parts > Brake Drums

returns drumhardwarbrak:

• policy: No Returns

payments drumhardwarbrak:

• other
• credit card: Discover
• wallet: Paypal

shipping drumhardwarbrak:

• cost: $35.92
• type: Calculated
• carrier: FedEx, USPS
• class: Standard
• transit: 3-9 Days
• service: FedEx Ground or FedEx Home Delivery, USPS Ground Advantage

seller drumhardwarbrak:

• rating: 100.0%
• city: Macungie, Pennsylvania
• # reviews: 2623

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