Lemförder 37939 01 - Mounting, automatic transmission

Lemförder 37939 01 – Mounting for Automatic Transmission (Left Side)

The Lemförder 37939 01 is a precision‑engineered mounting designed to secure the automatic transmission unit on the left side of front‑wheel drive vehicles. Developed by Lemförder, a leading manufacturer of automotive components, this mounting delivers exceptional rigidity, vibration damping, and durability for the demanding operating conditions encountered in modern passenger cars.

Key Design Features

• High‑strength steel construction: The mounting is fabricated from a proprietary alloy that offers superior tensile strength while maintaining lightweight characteristics. This material choice ensures the component can withstand high torque loads and harsh road environments without deformation.
• Optimized geometry: The mounting incorporates a carefully engineered shape that distributes stresses evenly across the attachment points. This design reduces localized fatigue and extends service life.
• Integrated vibration isolation: A built‑in elastomeric layer between the mounting body and the transmission housing absorbs engine vibrations, resulting in smoother operation and reduced noise levels.
• Corrosion‑resistant finish: The component is coated with a high‑performance anti‑corrosion layer that protects against moisture, road salts, and other environmental factors.
• Tool‑free installation: The mounting features a quick‑release mechanism that allows for rapid assembly and disassembly without the need for specialized tools, facilitating efficient maintenance procedures.

Compatibility and Application Scope

The Lemförder 37939 01 is specifically engineered for the following vehicle platforms:

• Citroën DS3 – models equipped with a left‑hand automatic transmission.
• Peugeot 208 – 2008‑2015 generation, left‑hand automatic gearbox.
• Peugeot 207 – 2006‑2015 generation, left‑hand automatic gearbox.
• DS 3 and DS 2 – left‑hand automatic transmission variants.

These vehicles share a common mounting interface, allowing the Lemförder 37939 01 to serve as a direct replacement for OEM components. The mounting is compatible with both 1.6 L and 1.4 L engine variants, as well as with diesel (HDI) powertrains.

Installation Procedure

1. Preparation: Ensure the vehicle is securely lifted and supported. Remove any existing mounting hardware that may interfere with installation.
2. Positioning: Align the mounting’s attachment points with the corresponding holes on the transmission housing. Verify that the orientation matches the left‑hand side specification.
3. Securing: Fasten the mounting using the supplied bolts. Tighten to the manufacturer’s torque specifications, typically 80 Nm, to guarantee optimal clamping force.
4. Verification: Inspect the installation for any gaps or misalignments. Confirm that the mounting sits flush against the transmission frame and that all fasteners are secure.
5. Final checks: Re‑torque the bolts after a short drive cycle to account for any settling. Verify that the mounting remains free of play and that vibration levels are within acceptable limits.

Performance Benefits

• Enhanced Structural Integrity: The mounting’s robust construction reduces the risk of transmission frame flexing, thereby preserving gear alignment and preventing premature wear.
• Improved Ride Comfort: The integrated vibration isolation layer dampens engine and road‑induced vibrations, contributing to a quieter cabin environment.
• Extended Component Life: By evenly distributing loads and protecting against corrosion, the mounting prolongs the lifespan of both the transmission and the vehicle’s drivetrain.
• Maintenance Efficiency: The tool‑free design shortens service times, reducing labor costs and minimizing vehicle downtime.

Material Specifications

The Lemförder 37939 01 is manufactured from a high‑grade alloy steel (typically 20MnMoV5) that offers a balance of strength, toughness, and weldability. The component undergoes a phosphating process followed by a thermal spray coating to enhance corrosion resistance. The elastomeric isolation layer is composed of a polyurethane compound selected for its high resilience and temperature tolerance.

Quality Assurance

Every mounting undergoes rigorous testing, including:

• Dimensional inspection to ensure compliance with OEM tolerances.
• Load testing to verify that the mounting can sustain peak torque loads without failure.
• Vibration analysis to confirm that the isolation layer effectively dampens resonant frequencies.
• Environmental testing to assess performance under temperature extremes and corrosive conditions.

Conclusion

The Lemförder 37939 01 mounting for automatic transmission represents a pinnacle of automotive engineering. Its combination of high‑strength materials, thoughtful design, and ease of installation makes it an ideal choice for vehicle owners seeking reliable performance and longevity. Whether you are restoring a classic Citroën DS3 or maintaining a modern Peugeot 208, this mounting delivers the structural support and vibration control necessary to keep your vehicle running smoothly for years to come.