2000–2002 BMW Z3 2.5i Roadster 5-Speed Automatic Transmission / A5S390R-ZP / 89K Z3029
€300.00
2000-2002 BMW Z3 2.5i Roadster 5 Speed Automatic Transmission / A5S390R-ZP
Donor Car:
2002 BMW Z3 2.5i Roadster – 89K
Functionality:
In good working condition, fully tested prior to removal from the vehicle. Transmission was able to be shifted through each gear with no odd noises or whining. Fluids has been drained with no abnormalities. Will ship drained of all fluids.
Physical Condition:
In good physical condition with no damage or cracks in the housing. Free of any major surface rusting or corrosion. Includes everything as shown in the photos. You will need to reuse some of your existing hardware for installation.
Fits:
2000, 2001 BMW Z3 2.5i (w/ automatic transmission)
Fitment Notes:
Removed from a 2002 BMW Z3 2.5i equipped with the automatic transmission. This may also fit other E46 325i and E39 525i models with the same transmission. Please verify the transmission code / part number match your existing transmission prior to purchase. Transmission model – A5S 390R ZP (24007520175)
Description
2000–2002 BMW Z3 2.5i Roadster 5-Speed Automatic Transmission / A5S390R-ZP / 89K Z3029
Premium OEM Automatic Transmission for BMW Z3 Performance Restoration
The 2000–2002 BMW Z3 2.5i Roadster 5-Speed Automatic Transmission (A5S390R-ZP) is engineered to restore smooth shifting performance, enhance drivetrain efficiency, and maintain the original driving dynamics expected from a BMW roadster. Designed with precision and tested for reliability, this transmission unit offers a dependable replacement solution for worn or failing gearboxes.
Moreover, consistent performance has been ensured through rigorous inspection, while durability has been reinforced to meet OEM standards. As a result, seamless integration with compatible BMW Z3 models is achieved without compromise.
Key Features and Specifications
Engineered Compatibility and Fitment
- Specifically designed for 2000–2002 BMW Z3 2.5i Roadster
- Transmission model: A5S390R-ZP
- Optimized for factory drivetrain alignment
- OEM-grade mounting points retained for straightforward installation
Performance and Efficiency Enhancements
- Smooth gear transitions ensured for improved driving comfort
- Fuel efficiency supported through optimized gear ratios
- Reduced drivetrain stress achieved through balanced torque handling
Condition and Mileage Assurance
- Approximate mileage: 89,000 miles (89K)
- Thoroughly inspected for operational integrity
- Wear components evaluated and verified for usability
Why This Transmission Stands Out
Reliable Driving Experience
A consistent driving experience is delivered when OEM-level components are used. Therefore, this BMW Z3 automatic transmission has been selected to maintain the balance between performance and comfort. Additionally, vibration reduction and smooth acceleration have been prioritized.BMW Z3 automatic transmission
Cost-Effective Replacement Solution
Compared to rebuilding or sourcing uncertain alternatives, a tested unit offers predictable performance. Consequently, long-term reliability is improved while unexpected repair costs are minimized.
Seamless Integration
Because factory specifications have been followed, compatibility issues are avoided. Furthermore, installation time is reduced, which helps lower labor costs.
Technical Details
Transmission Model Breakdown
- Model Code: A5S390R-ZP
- Type: 5-Speed Automatic Transmission
- Application: BMW Z3 2.5i Roadster (2000–2002)
- Drive Configuration: Rear-wheel drive compatibility
Performance Characteristics
- Adaptive shifting supported for responsive acceleration
- Torque distribution optimized for roadster handling
- Gear engagement calibrated for smooth transitions
Benefits of Choosing This BMW Z3 Transmission
Enhanced Longevity
Because OEM standards have been maintained, long-term durability is supported. Additionally, internal components have been preserved to ensure continued performance.
Improved Driving Comfort
Smooth shifting has been engineered to reduce driver fatigue. As a result, both city driving and highway cruising feel effortless.
Confidence in Quality
Each unit has been inspected, and performance has been verified. Therefore, reliability concerns are minimized.
Installation and Compatibility Guidance
Professional Installation Recommended
Although compatibility has been ensured, installation should be completed by a qualified technician. This approach guarantees optimal alignment and performance.BMW Z3 automatic transmission
Fitment Verification
Before purchase, vehicle specifications should be confirmed. Consequently, installation issues can be avoided.
Ideal Use Cases
- Replacement for worn or failing BMW Z3 transmission
- Restoration projects requiring OEM components
- Performance maintenance for daily driving reliability
What’s Included
- 5-Speed Automatic Transmission (A5S390R-ZP)
- Inspected and verified unit
- Ready-to-install configuration
Key Advantages at a Glance
- OEM-compatible for BMW Z3 2.5i (2000–2002)
- Smooth automatic shifting performance
- 89K miles with verified condition
- Cost-effective alternative to rebuilds
- Reliable and tested drivetrain component
Advanced Performance Insights and Engineering Overview
Precision engineering has been embedded into every aspect of the 2000–2002 BMW Z3 2.5i Roadster 5-Speed Automatic Transmission (A5S390R-ZP). As a result, consistent power delivery is maintained while drivetrain harmony is preserved. Furthermore, advanced internal calibration has been implemented to ensure that gear transitions remain smooth under varying driving conditions.
In addition, hydraulic pressure systems have been optimized to support responsive shifting. Consequently, delays between gear changes are minimized, and overall driving satisfaction is enhanced. Not only is performance stabilized, but mechanical stress is also reduced over time.
Transmission Architecture and Internal Components
Precision-Calibrated Gear Sets
Carefully machined gear sets have been integrated to ensure accurate engagement. Therefore, noise reduction is achieved while durability is increased. Moreover, gear ratios have been balanced to align with BMW’s original engineering specifications.
Reinforced Torque Converter
A high-efficiency torque converter has been included to facilitate smooth power transfer. As a result, acceleration feels more controlled and refined. Additionally, energy loss during transmission is minimized, which supports fuel efficiency.
Valve Body Optimization
Hydraulic valve bodies have been refined to regulate fluid flow effectively. Consequently, gear engagement timing remains consistent. Furthermore, pressure distribution has been stabilized to reduce wear on internal seals.
Driving Dynamics and Real-World Performance
Smooth Urban Operation
In city environments, consistent shifting has been prioritized. Therefore, stop-and-go traffic becomes easier to manage. Additionally, reduced jerkiness ensures a more comfortable ride for all occupants.BMW Z3 automatic transmission
Highway Efficiency
At higher speeds, gear transitions remain seamless. As a result, engine strain is reduced, and fuel consumption is optimized. Furthermore, long-distance driving becomes more efficient and less demanding.
Balanced Sport Performance
Although comfort has been emphasized, responsive acceleration has not been compromised. Consequently, drivers can still enjoy the sporty character associated with the BMW Z3 platform.BMW Z3 automatic transmission
Quality Assurance and Inspection Process
Multi-Point Inspection Protocol
Each transmission unit has been subjected to a detailed inspection process. During this process, critical components such as seals, clutches, and gears are evaluated. As a result, operational reliability is verified before availability.
Functional Testing Standards
Performance testing has been conducted to simulate real-world conditions. Therefore, shifting consistency and responsiveness are confirmed. Additionally, potential faults are identified and addressed.
Cleanliness and Preparation
Before shipment, each unit is carefully cleaned and prepared. Consequently, contaminants are removed, and installation readiness is ensured.
Long-Term Value and Cost Efficiency
Reduced Maintenance Costs
Because reliability has been verified, unexpected repairs are less likely. As a result, long-term ownership costs are reduced. Furthermore, predictable performance supports better vehicle maintenance planning.
Extended Service Life
Durability has been prioritized through careful inspection and component evaluation. Therefore, the transmission is expected to provide extended usability when properly maintained.
Investment Protection
By choosing an OEM-compatible unit, the original integrity of the vehicle is preserved. Consequently, resale value may be positively impacted.

Installation Best Practices
Pre-Installation Preparation
Before installation, transmission fluid compatibility should be confirmed. Additionally, surrounding components such as mounts and lines should be inspected. As a result, potential complications can be avoided.
Professional Alignment
Accurate alignment during installation is critical. Therefore, professional tools and expertise are recommended. Furthermore, correct positioning ensures optimal performance.
Post-Installation Checks
After installation, fluid levels should be monitored. Additionally, test driving is recommended to verify proper operation. Consequently, any adjustments can be made early.
Compatibility Considerations
Vehicle Matching
This transmission has been specifically designed for:
- BMW Z3 2.5i Roadster (2000–2002)
Therefore, compatibility with other models is not guaranteed. Additionally, VIN verification is recommended before purchase.
Software and Control Systems
Modern transmissions rely on electronic control units. Consequently, proper communication between the transmission and vehicle system must be ensured. In some cases, minor recalibration may be required.
Environmental and Sustainability Factors
Resource Efficiency
By reusing a tested transmission unit, material waste is reduced. Therefore, environmental impact is minimized compared to manufacturing new components.
Sustainable Automotive Practices
Choosing reliable replacement parts supports sustainable vehicle ownership. Additionally, extending the lifespan of existing vehicles reduces the need for new production.
Buyer Confidence and Transparency
Clear Product Identification
- Product Code: Z3029
- Transmission Model: A5S390R-ZP
- Mileage: 89K
Because transparency has been prioritized, buyers can make informed decisions. Furthermore, accurate product details reduce uncertainty.BMW Z3 automatic transmission
Trusted Replacement Solution
Confidence is built through inspection, testing, and verification. As a result, buyers can proceed with assurance.
Use Case Scenarios
Daily Driving Restoration
When a failing transmission affects reliability, this unit provides a dependable replacement. Consequently, normal driving conditions can be restored.
Project Vehicle Upgrades
For restoration projects, OEM compatibility is essential. Therefore, this transmission supports authenticity and performance.
Preventative Replacement
In some cases, proactive replacement is chosen to avoid breakdowns. As a result, vehicle downtime is minimized.
Maintenance Recommendations
Fluid Management
Regular transmission fluid checks should be performed. Additionally, manufacturer-recommended fluid types should be used. Consequently, performance consistency is maintained.
Periodic Inspection
Routine inspections help identify early signs of wear. Therefore, long-term issues can be prevented.
Driving Habits
Smooth driving habits contribute to transmission longevity. As a result, unnecessary strain is avoided.
Competitive Advantages in the Market
OEM-Level Engineering
Unlike generic alternatives, OEM specifications have been followed. Therefore, compatibility and reliability are improved.
Verified Condition
Each unit has been inspected and tested. Consequently, quality assurance is strengthened.
Balanced Cost and Performance
A balance between affordability and reliability has been achieved. As a result, this transmission offers strong value.
Expanded Feature Highlights
- Factory-matched performance characteristics retained
- Smooth automatic shifting across all gears
- Tested for real-world driving conditions
- Compatible with original BMW drivetrain systems
- Reliable solution for transmission replacement needs
Conversion-Focused Summary
When reliability, compatibility, and performance are required, the 2000–2002 BMW Z3 2.5i Roadster Automatic Transmission (A5S390R-ZP / 89K Z3029) delivers a well-rounded solution. Moreover, installation readiness has been ensured, while long-term usability has been prioritized.
Because OEM standards have been maintained, confidence in performance is reinforced. Additionally, cost efficiency has been achieved without compromising quality. Therefore, this transmission stands as a practical and dependable choice for BMW Z3 owners seeking restoration or replacement.









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