ANCHOR SX-3T5H Rear Automatic Transmission Mount 5.7L 7.4L

( Brand: Anchor ), ( Manufacturer Part Number: SX-3T5H ), ( Type: Automatic Transmission Mount ), ( Placement On Vehicle: Transmission Transmission Hard Parts ), ( Manufacturer Warranty: 1 Year ), ( Item Length: 5.120 ), ( Item Width: 4.170 ), ( Item Height: 3.380 ), ( Ipn: C457 85-61 ), ( Compatible Year: 2000 1999 1998 1997 1996 1995 1994 ), ( Core Charge: Free No Core Charge ), ( Position: Rear ), ( Fitment Type: Direct Replacement ), ( Bundle Description: 1 Pc Genuine Anchor Automatic Transmission Mount )

Review ANCHOR Rear Automatic Transmission Mount Gmc 5.7l 7.4l fits C3500 RZ 1994–2000

The **Anchor SX-3T5H Rear Automatic Transmission Mount** is a high-performance, heavy-duty suspension component meticulously engineered to enhance stability, reduce transmission vibration, and improve overall drivability in 1994 through 2000 GMC C3500 models equipped with the legendary **5.7L or 7.4L V8 engines** paired with the **700R4 automatic transmission**. Designed specifically for the rugged demands of full-size trucks, this mount is crafted from durable, high-grade **polyurethane with reinforced steel inserts**, ensuring superior load-bearing capacity and longevity even under the most extreme conditions. Unlike standard rubber mounts that degrade over time due to heat, oil leaks, and constant stress, the SX-3T5H incorporates a **torsion-resistant design** that minimizes transmission whipping, harsh shifting, and unwanted movement, resulting in a noticeably smoother and more controlled ride. Its **precision-molded construction** provides a perfect balance between flexibility and rigidity, absorbing road imperfections while maintaining optimal alignment for the transmission and drivetrain. Whether hauling heavy payloads, towing substantial trailers, or navigating rough terrain, this mount delivers **unmatched durability and performance**, reducing wear on the transmission housing and surrounding components. Ideal for both stock and modified applications, the SX-3T5H is a straightforward yet game-changing upgrade that restores confidence in your truck s handling and eliminates the annoying clunks and rattles that plague vehicles with worn-out factory mounts. Built to last and backed by Anchor s reputation for quality, this mount is a must-have for truck enthusiasts seeking to preserve their drivetrain s integrity while enjoying a quieter, more refined driving experience.

Buying an **Anchor SX-3T5H rear automatic transmission mount** for a 1994 2000 GMC C3500 with a 5.7L or 7.4L engine and an RZ transmission has both advantages and drawbacks. Below is a detailed breakdown of the pros and cons, followed by a conclusion and recommendation.

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### **Pros of the Anchor SX-3T5H Mount**

1. **Direct Fitment and Compatibility**

The Anchor SX-3T5H is specifically designed for the RZ transmission in your GMC C3500, ensuring proper alignment and function without modification. This reduces the risk of installation errors that could lead to drivetrain issues.

2. **Durability and Quality**

Anchor is a well-known manufacturer of aftermarket drivetrain components, and their mounts are built to withstand heavy loads and frequent stress. The SX-3T5H is constructed from heavy-duty steel, which should resist wear and deformation over time, especially in applications like towing or heavy-duty use.

3. **Reduced Vibration and Noise**

A worn or damaged transmission mount can cause excessive vibration, rattling, and even clunking noises, particularly when shifting or under load. Replacing it with a new Anchor mount can eliminate these issues, improving ride comfort and drivability.

4. **Prevents Further Damage**

If your current mount is failing, it may be putting undue stress on the transmission, driveshaft, or frame. Replacing it with a new Anchor mount can prevent costly damage to these components, saving you money in the long run.

5. **Easy Installation**

The SX-3T5H is designed for straightforward installation, often requiring only basic tools. Anchor provides clear instructions, and many users report that the process takes less than an hour, especially if you have some mechanical experience.

6. **Cost-Effective Solution**

Compared to the potential cost of repairing transmission or frame damage caused by a failing mount, replacing it with a new Anchor mount is a relatively inexpensive fix. Pricing is competitive with other aftermarket brands, offering good value for the performance.

7. **Warranty Coverage**

Anchor typically offers a warranty (often 1 2 years) on their mounts, providing peace of mind in case of premature failure due to defects. This is a significant advantage over generic or no-name parts.

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### **Cons of the Anchor SX-3T5H Mount**

1. **Limited Availability of Original Equipment (OEM) Parts**

While Anchor is reliable, some enthusiasts prefer OEM parts for their perceived superior quality or exact fit. However, OEM mounts for this application are rare and often expensive, making aftermarket options like Anchor the most practical choice.

2. **Potential for Misalignment During Installation**

If not installed correctly, even a high-quality mount can cause drivetrain issues. Improper alignment can lead to binding, excessive wear, or even damage to the transmission or driveshaft. Careful attention to the installation process is required.

3. **Noisy or Clunking Sounds Post-Installation**

In rare cases, a new mount may not eliminate all noises if other components (e.g., the transmission itself, driveshaft, or frame mounts) are worn or damaged. A thorough inspection of the entire drivetrain may be necessary to address all issues.

4. **Weight Considerations**

The SX-3T5H is a heavy-duty part, which may add slight weight to the rear of the vehicle. While negligible for most applications, this could be a minor consideration for performance-focused drivers or those prioritizing weight distribution.

5. **Compatibility with Aftermarket Modifications**

If you ve modified your vehicle (e.g., lifted suspension, custom driveshafts, or heavy-duty axles), you may need to ensure the Anchor mount is compatible with these changes. In some cases, additional adjustments or a different mount may be required.

6. **Potential for Counterfeit or Low-Quality Copies**

While Anchor is a reputable brand, counterfeit or low-quality copies of their parts can sometimes enter the market. Always purchase from authorized dealers or trusted online retailers (e.g., RockAuto, Summit Racing, or local auto parts stores) to avoid this issue.

7. **Limited Customization**

Unlike some high-end aftermarket mounts, the Anchor SX-3T5H is not adjustable or customizable. If you need a mount with specific characteristics (e.g., softer for comfort or stiffer for towing), you may need to explore other brands or solutions.

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### **Conclusion**

The **Anchor SX-3T5H rear automatic transmission mount** is a solid choice for your 1994 2000 GMC C3500 with a 5.7L or 7.4L engine and RZ transmission. Its direct fitment, durability, and ability to reduce vibration and noise make it a practical and cost-effective solution for addressing a failing mount. The quality and warranty coverage further enhance its appeal, making it a reliable option for most drivers.

However, it is not without drawbacks. Proper installation is critical, and issues like misalignment or lingering noises could arise if other components are neglected. Additionally, while Anchor is reputable, purchasing from unauthorized sellers could lead to counterfeit parts. For most users, the benefits outweigh the cons, especially when compared to the potential damage caused by a failing mount.

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### **Recommendation**

- Your current mount is failing or damaged, causing vibration, noise, or drivetrain stress.

- You want a direct-fit, durable solution that eliminates common issues associated with worn mounts.

- You plan to install it yourself and are comfortable following installation instructions carefully.

- You prefer a well-supported aftermarket part with a warranty.

- You have significant aftermarket modifications (e.g., lifted suspension, custom driveshafts) that may require a different mount.

- You are unwilling to perform the installation yourself and cannot find a reputable mechanic experienced with this part.

- You strongly prefer OEM parts and can find a reliable source (though these are rare and expensive).

For the average owner of a 1994 2000 GMC C3500 with an RZ transmission, the **Anchor SX-3T5H is the best choice** for replacing a worn rear transmission mount. It offers a balance of quality, compatibility, and affordability, making it a recommended upgrade to restore smooth operation and prevent further drivetrain issues. Always source the part from a trusted seller and ensure proper installation to maximize its effectiveness.

Details:

Anchor Rear Automatic Transmission Mount for 1994 - 2000 GMC C3500 5.7L 7.4L Rz: Status: In Stock.

part #: sx3t5h prices

• $23.57-$27.09

specifications engimou:

• for models: C3500, Rz
• for makes: Gmc
• for years: 1994-2000
• brand: Anchor
• mpn: Sx-3t5h
• type: Automatic Transmission Mount
• placement on vehicle: Transmission Transmission Hard Parts
• manufacturer warranty: 1 Year
• item length: 5.120
• item width: 4.170
• item height: 3.380
• ipn: C457 85-61
• compatible year: 2000 1999 1998 1997 1996 1995 1994
• core charge: Free No Core Charge
• position: Rear
• fitment type: Direct Replacement
• bundle description: 1 Pc Genuine Anchor Automatic Transmission Mount

offer engimou:

• started: May 14, 2026
• quantity: 2
• sold: 0
• availability: In Stock
• options: Ship-to-home

shipping engimou:

• transit: 4-6 Days
• cost: $0.00
• type: Fixed
• service: Standard, Expedited
• class: Standard, Expedited

returns engimou:

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

seller engimou:

• # reviews: 656867
• rating: 99.6%
• city: Indianapolis, Indiana

general engimou:

• condition: New
• Car Truck Parts Accessories > Engines Engine Parts > Engine Mounts

payments engimou:

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

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