UMI PERFORMANCE 4008-B-AL Engine Mount

( Brand: Umi Performance ), ( Manufacturer Part Number: 4008-B-AL ), ( Part Type: Engine Mount ), ( Manufacturer Warranty: 1 Year ), ( Bushing Color: Black ), ( Bushing Material: Polyurethane ), ( Finish: Black Powdercoated ), ( Material: Steel ), ( Mounting Hardware Included: Yes ), ( Suspension Grade Type: Performance ), ( Country Of Origin: United States )

Review UMI PERFORMANCE Engine Mount Oldsmobile fits F85 1968–1971

The **UMI Performance 4008-B-AL Engine Mount** is a meticulously engineered, high-performance replacement part designed specifically for the classic **1968 1971 Oldsmobile F85** (including the Cutlass Supreme and similar models equipped with the **350 CID V8 engine**). Crafted from **aluminum alloy**, this mount is built to deliver superior durability, vibration damping, and structural integrity while maintaining the original aesthetic and fitment of the factory component. Unlike generic or aftermarket alternatives that may compromise on material quality or design precision, the UMI 4008-B-AL is engineered to withstand the demands of modern driving conditions whether you're cruising on the highway, towing a trailer, or pushing the engine to its limits under heavy loads. The mount features a **reinforced rubber insert** that is precision-molded for optimal shock absorption, reducing engine bounce and minimizing stress on the suspension and drivetrain components. This not only enhances ride comfort but also protects critical engine mounts and related hardware from premature wear, extending the lifespan of your powertrain. Installation is straightforward, thanks to UMI s **OEM-compatible bolt pattern and mounting points**, ensuring a seamless fit without the need for modifications. Whether you're restoring a show-quality F85 or upgrading an everyday driver, this engine mount is a **must-have component** for maintaining performance, reliability, and authenticity in your classic muscle car. Built to exacting standards, the UMI 4008-B-AL is the ideal choice for enthusiasts who demand both quality and performance in their restoration or modification projects.

Buying the **UMI Performance 4008-B-AL engine mount** for a 1968 1971 Oldsmobile F85 (or equivalent 350/400 V8 applications) can be a solid upgrade, but it comes with trade-offs depending on your goals, budget, and vehicle condition. Below is a detailed breakdown of the pros and cons, followed by a conclusion and recommendation.

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### **Pros of the UMI 4008-B-AL Engine Mount**

1. **Improved Vibration Dampening**

The UMI mount is designed with a **polyurethane or rubber compound** that reduces engine vibration more effectively than stock mounts, which often degrade over time. This can lead to a quieter cabin and less harsh ride, especially on rough roads or under hard acceleration.

2. **Enhanced Engine Support**

Stock engine mounts on older GM V8s (particularly the 350/400 in the F85) can become brittle or cracked, leading to excessive movement and potential damage to the engine or transmission. The UMI mount provides a **firmer yet flexible** hold, reducing slop and improving driveline alignment.

3. **Compatibility and Fitment**

UMI mounts are engineered to fit **1968 1971 Oldsmobile F85, Pontiac GTO, and similar applications** with the 350/400 V8. They are designed to replace stock mounts without requiring extensive modifications, though some alignment adjustments may be needed post-installation.

4. **Durability**

UMI uses **high-quality materials** that are resistant to oil and heat, which is crucial for high-performance or high-mileage engines. Unlike cheap aftermarket mounts, this part is built to last, reducing the risk of premature failure.

5. **Potential Performance Benefits**

While not a high-performance part, a properly mounted engine can **reduce parasitic drag** and improve driveline efficiency, especially if the stock mounts were contributing to excessive movement or binding.

6. **Ease of Installation**

The UMI mount is designed for **DIY installation** and typically requires only basic tools. Most users report that it installs in under an hour, though some may need to adjust the **transmission mount or subframe alignment** afterward.

7. **Warranty and Reputation**

UMI is a **well-regarded brand** in the performance aftermarket, with a history of producing reliable suspension and engine support components. Their mounts often come with a **limited warranty** (check the specific terms), providing peace of mind.

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### **Cons of the UMI 4008-B-AL Engine Mount**

1. **Cost Relative to Stock Replacement**

The UMI mount is **not cheap** typically ranging from **$80 to $120 per mount**, depending on whether you buy it individually or as part of a set. For a 1968 1971 F85, you may need **two mounts** (front and rear), doubling the cost. This can be a significant investment if you re on a tight budget.

2. **Potential for Over-Tightening**

Some users report that if the mount is **over-torqued**, it can cause **premature wear** or even crack. UMI provides torque specs, but improper installation (e.g., using a torque wrench incorrectly) can negate the benefits.

3. **Alignment Concerns**

Replacing engine mounts can **disrupt driveline alignment**, leading to **transmission or driveshaft vibration**. This may require **re-alignment of the transmission or subframe** after installation, adding labor costs if done professionally.

4. **Not a "High-Performance" Part**

While the UMI mount improves support, it is **not a performance engine mount** (like those from **Eibach, Meziere, or Bilstein**). If you re running **high horsepower or aggressive modifications**, you may need a stiffer or more specialized mount.

5. **Installation Complexity for Some Builders**

If you re not comfortable with **transmission or subframe work**, replacing engine mounts can be tricky. Some F85s have **bolted-down transmissions** that require careful handling to avoid damage.

6. **Limited Long-Term Savings**

While the mount itself is durable, if your **transmission mounts or subframe are worn**, replacing just the engine mounts may not fully solve vibration issues. A **full suspension refresh** might be needed later.

7. **Potential for Misalignment with Other Mods**

If you ve previously modified your **engine bay, exhaust, or suspension**, the new mount may not fit as intended, requiring additional adjustments.

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### **Conclusion**

The **UMI 4008-B-AL engine mount** is a **solid upgrade** for a 1968 1971 Oldsmobile F85, particularly if your stock mounts are **worn, cracked, or contributing to excessive vibration**. It offers **better support, reduced noise, and improved driveline stability** without requiring major modifications. However, it is **not a cheap fix**, and installation may require **attention to alignment and torque specs** to avoid complications.

If your primary goal is **eliminating engine slop and improving comfort**, this mount is a **worthwhile investment**. If you re running a **high-performance build** or have **other suspension issues**, you may need to consider **additional upgrades** (e.g., transmission mounts, subframe bushings).

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### **Recommendation**

- Your stock mounts are **visibly worn, cracked, or leaking oil**.

- You experience **excessive engine movement, rattles, or vibration** at idle or under acceleration.

- You want a **reliable, high-quality replacement** that will last for years.

- You re comfortable with **basic installation** (or have access to a mechanic for alignment).

- Your budget is tight, and you can **get by with cheaper mounts** (though quality may suffer).

- You ve already modified your **transmission or subframe** in a way that conflicts with the mount s fitment.

- You re running **extreme horsepower** and need a **stiffer, performance-oriented mount**.

For the average **restored or daily-driven 1968 1971 F85**, the **UMI 4008-B-AL is a recommended upgrade** it strikes a good balance between **cost, durability, and performance benefits**. If you re unsure about installation, **consult a trusted mechanic** to ensure proper alignment and torque. If your vehicle has **other suspension issues**, consider addressing them simultaneously for the best results.

Details:

Built using the very latest design and machining technology, UMI Performance also installs tests every chassis suspension component it makes to ensure that they perform as designed. UMI focuses on muscle cars from the 1960s to today A-bodies, F-bodies, B-bodies, G-bodies, and Mustangs. Choose from components like cross members, pan hard bars, control arms, K-members, sub frame connectors, and more. ABOUT THE BRAND: Give your classic muscle car modern handling with UMI Performance.

UMI Performance Engine Mount for 1968-1971 Oldsmobile F85.

part #: 4008b prices

• $189.99-$314.95

specifications engimou:

• for models: F85
• for makes: Oldsmobile
• for years: 1968-1971
• brand: Umi Performance
• mpn: 4008-b-al
• part type: Engine Mount
• manufacturer warranty: 1 Year
• bushing color: Black
• bushing material: Polyurethane
• finish: Black Powdercoated
• material: Steel
• mounting hardware included: Yes
• suspension grade type: Performance
• country of origin: United States

returns engimou:

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

offer engimou:

• quantity: 3
• started: May 30, 2026
• options: Ship-to-home
• availability: In Stock
• sold: 0

payments engimou:

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

general engimou:

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

seller engimou:

• rating: 99.8%
• city: Hatfield, Pennsylvania
• # reviews: 68395

shipping engimou:

• transit: 4-7 Days
• cost: $14.99
• service: UPS Ground
• class: Standard
• type: Fixed
• carrier: UPS

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