labwork Hydraulic Pump Convertible Top Folding Roof Unit For BMW E85 Z4
labwork Hydraulic Pump Convertible Top Folding Roof Unit For BMW E85 Z4 is a direct-replacement motor unit priced at $294.03. Designed for 2003–2008 BMW Z4 models, it powers the convertible roof's hydraulic folding mechanism, ensuring smooth, reliable open-and-close cycles for roadster owners needing OEM-level performance.
● In stock
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Key features
- OEM-compatible design for E85 Z4
- Complete hydraulic motor unit
- Direct replacement, no mods needed
- Fits 2.5i, 3.0i, 3.0si, M Roadster
- Plug-and-play electrical connector
- Sealed system reduces leak risk
- Engineered for long service life
Pros
- +Exact fit for 2003–2008 Z4 models
- +Restores full roof operation reliably
- +Saves cost vs dealership replacement
- +Includes motor and hydraulic pump
- +Factory-style connectors included
Cons
- −Only fits E85 chassis, not universal
- −Requires basic mechanical skill to install
- −No fluid or hoses included
About labwork Hydraulic Pump Convertible Top Folding Roof Unit For BMW E85 Z4
What is labwork Hydraulic Pump Convertible Top Folding Roof Unit For BMW E85 Z4?
The labwork Hydraulic Pump Convertible Top Folding Roof Unit For BMW E85 Z4 is a dedicated motor and hydraulic pump assembly engineered to operate the power-folding soft top on BMW Z4 E85 models from 2003 to 2008. This unit replaces the original factory pump responsible for raising and lowering the convertible roof, a critical component for maintaining the car’s open-air driving experience. When the factory pump fails due to wear, leaks, or electrical issues, this replacement ensures full functionality returns without requiring a full roof system overhaul. Sold by Lab Work Auto, it's built to match OEM specifications for fit and performance.
Key features
- OEM-Compatible Design — Matches original fit and function for 2003–2008 BMW Z4 E85 models.
- Complete Hydraulic Motor Unit — Includes integrated pump and motor for full roof actuation.
- Direct Replacement — No modifications needed; installs in place of failed factory unit.
- Broad Model Coverage — Fits 2.5i, 3.0i, 3.0si, and M Roadster S54 variants.
- Reliable Performance — Engineered for consistent hydraulic pressure and long service life.
- Plug-and-Play Wiring — Retains factory connectors for simplified installation.
- Sealed Hydraulic System — Minimizes fluid leaks and contamination risks.
Who is labwork Hydraulic Pump Convertible Top Folding Roof Unit For BMW E85 Z4 for?
This unit is ideal for BMW Z4 E85 owners experiencing slow, incomplete, or failed convertible top operation. It’s especially valuable for DIY mechanics and independent repair shops seeking a cost-effective, high-quality alternative to dealership parts. Enthusiasts maintaining classic Z4s or preparing vehicles for resale will benefit from restoring full roof functionality. It’s suited for users who prioritize reliability and compatibility without sacrificing performance.
How does labwork Hydraulic Pump Convertible Top Folding Roof Unit For BMW E85 Z4 compare?
Compared to generic hydraulic motors or used OEM units, the labwork pump offers superior consistency and longevity. Unlike rebuilt or secondhand pumps, it delivers fresh seals and components, reducing leak risks. It outperforms universal kits that require custom plumbing or voltage adjustments. While not priced at the lowest end, it strikes a balance between affordability and reliability, sitting above budget imports in quality while undercutting dealership list prices. For E85 Z4 owners, it’s a targeted solution that avoids the guesswork of adaptation required with non-specific alternatives.
Best use cases
- →Replace failed factory roof pump
- →Restore convertible top function
- →DIY repair on Z4 2.5i or 3.0i
- →Prevent further roof mechanism damage
- →Upgrade from leaking used unit
Is labwork Hydraulic Pump Convertible Top Folding Roof Unit For BMW E85 Z4 right for you?
This pump is best for BMW Z4 E85 owners with malfunctioning convertible tops. Ideal for DIYers with intermediate mechanical skills—installation requires access to the trunk area and basic tools. If your roof moves slowly or not at all, this unit likely resolves the issue. Alternatives include costly dealership OEM parts or unreliable used units. Always confirm your model year and trim before purchase.
How it compares: Compared to used OEM pumps, this unit offers fresh components and better leak resistance. It outperforms universal hydraulic kits that lack direct fitment. While pricier than low-end imports, it delivers consistent performance and compatibility specific to the E85 Z4 platform.
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$60.00Frequently Asked Questions
What does the labwork Hydraulic Pump Convertible Top Folding Roof Unit do?
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It powers the hydraulic system that opens and closes the BMW Z4 E85's convertible roof. When activated, it pressurizes fluid to move the roof mechanism smoothly and reliably, replacing failed or worn factory pumps.
Does this fit all BMW Z4 models?
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It fits 2003–2008 BMW Z4 E85 models including 2.5i, 3.0i, 3.0si, and M Roadster S54. It is not compatible with newer Z4 generations or non-E85 chassis.
How hard is it to install this hydraulic pump?
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Installation requires moderate mechanical skill. You must access the trunk area, disconnect the old pump, and connect hydraulic lines and wiring. Proper fluid refill and bleeding are essential for full operation.
Is this a new or rebuilt unit?
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This is a new hydraulic pump motor unit built to match OEM specifications. It includes all internal seals and components fresh from manufacturing, offering better reliability than rebuilt or used alternatives.
Can I use this with my existing hydraulic lines?
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Yes, it connects to the factory hydraulic lines and electrical harness. However, inspect existing hoses for leaks or wear before installation. Old or degraded lines may compromise performance.
How much does labwork Hydraulic Pump Convertible Top Folding Roof Unit For BMW E85 Z4 cost?
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labwork Hydraulic Pump Convertible Top Folding Roof Unit For BMW E85 Z4 is $294.03 at Lab Work Auto. Prices may change — click through to Lab Work Auto for the latest.
Is labwork Hydraulic Pump Convertible Top Folding Roof Unit For BMW E85 Z4 in stock at Lab Work Auto?
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Yes, labwork Hydraulic Pump Convertible Top Folding Roof Unit For BMW E85 Z4 is currently in stock at Lab Work Auto.
Specifications
- SKU
- F8-020100