FERRARI 109603 Boxer Gearbox End Cover Motor Mount 365 512 Testarossa

( Manufacturer Part Number: 109603 ), ( Type: Motor Mount Cover Plate ), ( Vintage Part: Yes ), ( Country Of Origin: Italy )

Review FERRARI 365 Boxer Gearbox End Cover Motor Mount 512 Testarossa Oe fits GT4

The **Ferrari 109603 365 GT4 Boxer Gearbox End Cover Motor Mount for the 512 Testarossa** is a meticulously engineered, high-performance component designed exclusively for the iconic Ferrari 512 BB and 512i Testarossa models, embodying the uncompromising precision and craftsmanship synonymous with Scuderia Ferrari. This part serves as both a structural and functional element, housing the rear gearbox end cover while securely mounting the engine to the chassis, ensuring optimal alignment and rigidity critical factors for maintaining the vehicle s legendary handling dynamics and reliability. Crafted from high-grade, heat-treated aluminum alloy, the end cover is machined to Ferrari s exacting specifications, featuring a seamless, polished finish that not only enhances aesthetic appeal but also prevents corrosion and wear over time. The integrated motor mount, a critical load-bearing component, is engineered to distribute engine vibrations evenly across the chassis, reducing stress on the drivetrain and suspension while preserving the Testarossa s signature rear-wheel-drive poise. This part is a direct replacement for the original Ferrari unit, ensuring a perfect fit with the 328/355/365 Boxer engine configurations found in the 512 series, complete with the correct bolt patterns, gasket surfaces, and mounting points. Whether restoring a classic Testarossa to its original glory or upgrading an existing build, this gearbox end cover and motor mount combination is an essential component for enthusiasts seeking authenticity, durability, and the unmistakable Ferrari driving experience. Its inclusion in a restoration or modification project ensures that the vehicle retains its mechanical integrity while delivering the exhilarating performance and timeless elegance that define the Ferrari name.

Buying a **Ferrari 109603 365 GT4 Boxer gearbox end cover/motor mount (512 Testarossa)** part can be a practical solution for restoring or maintaining a classic Ferrari, but it comes with several considerations.

1. **Authentic Fitment** This part is designed specifically for the 365 GT4 Boxer and 512 Testarossa, ensuring proper alignment and functionality without compromising the car s original character.

2. **High-Quality Materials** Ferrari parts are typically made from durable materials, including aluminum and steel, which can withstand the stresses of high-performance driving.

3. **Preservation of Value** Using genuine Ferrari parts helps maintain the car s originality, which is crucial for collectors and enthusiasts who prioritize authenticity over aftermarket alternatives.

4. **Reliability** Since these parts were designed for the original application, they are less likely to fail prematurely compared to poorly engineered aftermarket replacements.

5. **Easier Maintenance & Repairs** Having the correct part simplifies future servicing, as mechanics familiar with Ferrari models will be more confident working with original components.

6. **Resale Appeal** A car restored with genuine Ferrari parts retains better resale value, especially in the classic car market where authenticity is highly valued.

1. **High Cost** Genuine Ferrari parts are significantly more expensive than aftermarket alternatives, which can be a major financial burden, especially for older or less valuable models.

2. **Limited Availability** Finding a specific part like this may require sourcing from specialty dealers, Ferrari restoration shops, or even international suppliers, which can add to the cost and wait time.

3. **Potential for Overkill** If the part is only slightly damaged or worn, replacing it with a new genuine component may be unnecessary, making it a costly upgrade rather than a true repair.

4. **Weight Considerations** Some Ferrari parts, while high-quality, may be heavier than modern or aftermarket alternatives, which could slightly affect performance in a high-revving engine like the Boxer.

5. **Storage & Handling Risks** Shipping or storing a high-value Ferrari part requires careful handling to prevent damage, adding logistical challenges.

6. **Depreciation Risk** If the car is not a highly sought-after model, investing in a genuine part may not yield a proportional return in resale value.

Buying a **Ferrari 109603 365 GT4 Boxer gearbox end cover/motor mount** is a wise choice if you are restoring or maintaining a classic Ferrari where authenticity is paramount. The benefits of using an original part such as improved reliability, better resale value, and ease of maintenance often outweigh the drawbacks for serious collectors and enthusiasts.

However, if budget is a concern or the part is only minimally damaged, considering a high-quality aftermarket alternative (from reputable brands like **Ferrari Testa Rossa Parts, ECS, or Motori Ferrari**) could be a more cost-effective solution. Always weigh the long-term value of the car against the immediate cost of the part.

- **If restoring or preserving a high-value Ferrari** (e.g., a well-maintained 365 GT4 or 512 Testarossa), **purchase the genuine Ferrari part** to ensure authenticity and reliability.

- **If the car is a project or lower-value model**, evaluate whether the part is truly necessary or if a well-reviewed aftermarket alternative would suffice.

- **Consult a Ferrari specialist** before purchasing to confirm compatibility and assess whether the part is essential for the car s condition.

- **Check for used or refurbished options** sometimes, a lightly used genuine part can be found at a reduced price from restoration shops or private sellers.

Ultimately, the decision depends on your priorities: whether you value originality above cost or are willing to balance budget with performance and aesthetics.

Details:

FIRST BID BUYS IT!!, Part number: 109603. This item up for sale is a, Ferrari 365 GT4 Berliners Boxer Gearbox End Cover, Used in very good condition Part number: 109603 part also fits: 512BB 512BBi 512 and Testarossa Sale One gearbox end cover as seen Photos are of the item, 100% GENUINE FACTORY FERRARI PART.

part #: 109603 price

• $649.99

specifications steragebo:

• for models: Gt4
• for makes: Ferrari
• mpn: 109603
• type: Motor Mount Cover Plate
• vintage part: Yes
• country of origin: Italy

shipping steragebo:

• service: USPS Priority Mail, UPS Ground
• cost: $86.87
• carrier: USPS, UPS
• type: Fixed
• transit: 5-9 Days
• class: Expedited, Standard

returns steragebo:

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

payments steragebo:

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

offer steragebo:

• sold: 0
• quantity: 1
• availability: In Stock
• options: Ship-to-home
• started: March 11, 2026

seller steragebo:

• city: Stroudsburg, Pennsylvania
• rating: 100.0%
• # reviews: 6911

general steragebo:

• Car Truck Parts Accessories > Steering Suspension > Gearboxes, Rack Pinions
• condition: Used

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