3948878 Front Steering Knuckle Arm Left Right Power 69-82

( Brand: General Motors ), ( Manufacturer Part Number: 3948878 ), ( Item: Front Steering Arm Front Suspension Knuckle Set Pair ), ( Fitment Type: Direct Replacement ), ( Color: Gray ), ( Items Included: As Shown ), ( Vintage Part: Yes ), ( Placement On Vehicle: Front, Left, Right, Drivers Side, Left Hand, Lh, Passenger Side ), ( Type: Steering Knuckle Arm ), ( Oe/oem Part Number: 465071, 3948878, 3948877 ), ( Features: 100 Accuracy Of Fit, No Drilling Required, Direct Fit, Direct Replacement, Original ), ( Finish: Painted ), ( Country Of Origin: United States )

Review GENERAL MOTORS 69-82 Front Steering Knuckle Arm Left And Right Power Pair Oe fits CORVETTE C3

The **GM 3948878 (69-82 C3 Corvette Front Steering Knuckle Arm, Left & Right Power Steering)** is a meticulously engineered, high-performance suspension component designed exclusively for the iconic Chevrolet Corvette models produced between 1969 and 1982, encompassing the C3 generation. This critical steering knuckle arm serves as the foundational pivot point for the front wheel assembly, ensuring precise wheel alignment, optimal handling dynamics, and reliable steering response under both everyday driving conditions and high-performance scenarios. Crafted from durable, heat-treated steel, this knuckle arm is engineered to withstand the rigors of aggressive driving, heavy loads, and prolonged use, making it an essential upgrade or replacement part for enthusiasts seeking to restore factory performance or enhance their Corvette s cornering capabilities. The design incorporates a robust ball joint attachment at the wheel hub, allowing for smooth articulation and minimal play, while the integrated power steering linkage points ensure seamless integration with the vehicle s hydraulic steering system, maintaining the original C3 s signature blend of responsiveness and stability. Whether restoring a classic Corvette to its peak condition or modifying a project car for improved handling, this knuckle arm delivers the structural integrity and precision alignment required to uphold the legendary driving experience that defined the C3 era. Its compatibility with both left- and right-hand applications ensures versatility, while its direct drop-in fitment requiring minimal modification makes installation straightforward for mechanics and DIYers alike. For those preserving or reviving a piece of automotive history, this knuckle arm is a testament to GM s engineering prowess, offering a perfect balance of strength, functionality, and authenticity.

### **Analysis of Buying a Used GM 3948878 (69-82 C3 Corvette Front Steering Knuckle Arm, Left & Right, Power Steering)**

1. **Compatibility and Fit:** This part is specifically designed for the **1969-1982 Chevrolet Corvette (C3 generation)**, ensuring a perfect fit without modifications. It is part of the front steering linkage, which includes the steering knuckle arms (left and right) for power steering applications.

2. **Reliability of the C3 Platform:** The C3 Corvette is a well-documented and widely supported platform. Many aftermarket and OEM parts are available, making repairs and replacements easier compared to less common vehicles.

3. **Power Steering Functionality:** This part is for **power steering models**, which were standard on most C3 Corvettes from 1969 onward. Power steering improves drivability, especially in stop-and-go traffic, making the car more comfortable to drive.

4. **Potential for Restoration or Modification:** If you're restoring or modifying a C3 Corvette, having the correct steering components ensures proper alignment, handling, and safety. It s also a common part for classic car enthusiasts, so finding replacements or labor shouldn t be difficult.

5. **Cost-Effective Replacement:** Compared to rebuilding or machining a worn-out knuckle, purchasing a new or reconditioned part can be more economical. It also avoids the risk of improper welding or machining, which can compromise safety.

6. **Availability of Genuine and Aftermarket Options:** You can find this part from **OEM suppliers (GM), reputable aftermarket brands (like ECS, Jegs, or Summit Racing), or even eBay or classic car parts dealers**. Some sellers offer remanufactured or rebuilt parts with warranties.

7. **Improved Handling and Safety:** Worn or damaged steering knuckles can lead to **excessive play, misalignment, or even failure**, which could compromise steering control. Replacing them ensures smoother handling and reduces the risk of accidents.

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1. **Age and Wear of the Part:** Even if the knuckle arms are new, the **mounting points, bushings, and ball joints** may still be worn out from years of use. Simply replacing the knuckles without addressing these components won t fully resolve steering issues.

2. **Potential for Rust and Corrosion:** Many C3 Corvettes, especially those from the late '70s and early '80s, suffer from **rust in the lower control arms, subframe, and suspension components**. If the knuckles were previously damaged by rust, they may have been welded or repaired poorly, leading to future problems.

3. **Cost of Additional Labor:** Replacing steering knuckles typically requires **removing the wheel, disconnecting the ball joint, and often replacing the bushings or ball joints**. This is labor-intensive work, and if you re not experienced, it may require professional help, adding to the cost.

- **Genuine GM parts** (if available) may be more expensive but ensure exact fit and quality.

- **Aftermarket parts** (e.g., ECS, Summit) are often cheaper but may have slight variations in fit or quality. Some aftermarket parts are remanufactured, which can be a good middle ground.

- **Used parts** can be very cheap but may have hidden damage (cracks, rust, or worn bushings).

5. **Compatibility with Modified Suspensions:** If your Corvette has **aftermarket suspension modifications (lowering springs, poly bushings, or custom control arms)**, the stock knuckles may not fit perfectly or may require additional adjustments.

6. **Potential for Counterfeit or Low-Quality Parts:** When buying online (especially from unknown sellers), there s a risk of receiving **fake, mismatched, or poorly made parts**. Always verify the seller s reputation and check for authenticity.

7. **Time-Consuming Installation:** Steering knuckles are not a quick swap installation requires **removing the wheel, disconnecting the ball joint, replacing the bushing (if needed), and ensuring proper alignment**. This can take **4-8 hours** for a DIYer, depending on experience.

8. **Hidden Damage in Other Components:** If the knuckles were damaged due to an accident or poor maintenance, other parts (like the **subframe, sway bar links, or steering rack**) may also need replacement, increasing costs.

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Buying **GM part number 3948878 (69-82 C3 Corvette Front Steering Knuckle Arm, Left & Right, Power Steering)** is a **practical and necessary upgrade** if your Corvette s original knuckles are worn, damaged, or rusted. However, the decision should be based on **whether you re addressing a specific issue or performing a full suspension refresh**.

- **If you need a direct replacement for a failed knuckle**, this part is a **solid choice**, especially if sourced from a reputable supplier.

- **If your Corvette has extensive rust or suspension wear**, replacing just the knuckles may not be enough you should also inspect and replace **bushings, ball joints, and subframe components**.

- **If you re restoring a C3**, prioritize **genuine or high-quality aftermarket parts** to ensure longevity and safety.

- **If you re on a tight budget**, consider **used parts from trusted sellers**, but inspect them thoroughly for damage.

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- Before purchasing, **inspect the ball joints, bushings, and subframe** for wear. If they re bad, replace them simultaneously to avoid future issues.

- Check for **rust in the steering knuckle mounting points** if severe, the knuckles may need welding or machining.

- **Genuine GM parts** (if available) are ideal but may be expensive.

- **Aftermarket brands like ECS, Summit, or Jegs** offer good quality at lower prices.

- **Avoid unknown eBay sellers** unless they have **excellent reviews and return policies**.

- Some sellers offer **remanufactured knuckles** with new bushings and machining, which can be a cost-effective middle ground.

- If you re not experienced with suspension work, **factor in shop labor costs** (typically **$150-$300 per knuckle** for professional installation).

- If you re replacing the knuckles, **check the steering rack, tie rods, and sway bar links** these often wear out around the same time.

- Keep records of the part numbers, installation date, and any modifications. This helps with future diagnostics and resale value.

**Yes, purchasing this part is a good decision if your C3 Corvette s steering knuckles are failing.** However, **treat it as part of a broader suspension refresh** rather than a standalone fix. Prioritize **quality over cost** to ensure safety and longevity, and **address related wear** (bushings, ball joints) to prevent recurring issues.

For most C3 owners, this is a **worthwhile investment** that improves handling, safety, and the car s overall drivability especially if you plan to keep the vehicle long-term.

Details:

Fits 1969 Thru 1982 C3 Corvettes, -69-82 Corvette Front Steering Knuckle Arm Left Right Power PAIR OE, USED OEM parts, cleaned up and painted cast blast, theres no damages, but some wear in paint, green primer, see pics, Genuine GM Part: # 3948878 3948877, -Color: Gray, Just Corvettes. Warranty includes manufacturing defects. After receiving the product. Electrical Items are excluded.

part #: 3948878 prices

• $40.00-$68.00

specifications tirolik:

• for models: C3, Corvette
• brand: General Motors
• mpn: 3948878
• item: Front Steering Arm Front Suspension Knuckle Set Pair
• fitment type: Direct Replacement
• color: Gray
• items included: As Shown
• vintage part: Yes
• placement on vehicle: Front, Left, Right, Drivers Side, Left Hand, Lh, Passenger Side
• type: Steering Knuckle Arm
• oe/oem part number: 465071, 3948878, 3948877
• features: 100 Accuracy Of Fit, No Drilling Required, Direct Fit, Direct Replacement, Original
• finish: Painted
• country of origin: United States

general tirolik:

• Car Truck Parts Accessories > Steering Suspension > Tie Rods Steering Linkages
• condition: Used

shipping tirolik:

• class: Standard
• carrier: UPS
• cost: $19.00
• service: UPS Ground
• type: Fixed
• transit: 3-7 Days

returns tirolik:

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

payments tirolik:

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

offer tirolik:

• options: Ship-to-home
• sold: 0
• availability: In Stock
• quantity: 1
• started: March 16, 2026

seller tirolik:

• rating: 99.4%
• city: Saint Charles, Missouri
• # reviews: 6769

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