Driver Side Windscreen Wiper Arm
SKU:
80355900
$145.00
- Type: This part number refers to the complete mechanical arm located on the driver’s side of the vehicle, which connects the wiper motor linkage to the wiper blade. It is specifically designed for the left-hand side of the windshield as viewed from the driver’s seat.
- Function: The primary functions of the driver side windscreen wiper arm are crucial for effective windshield clearing and driver visibility:
- Blade Support: Provides a rigid and stable mount for the wiper blade, ensuring it remains in contact with the windshield surface.
- Motion Transfer: Transmits the oscillating motion from the wiper motor and linkage to the wiper blade, moving it across the windshield.
- Pressure Application: Contains an integrated spring mechanism that applies consistent downward pressure to the wiper blade, ensuring optimal contact with the glass for streak-free wiping.
- Aerodynamic Design: Often designed with an aerodynamic profile to minimize lift and maintain blade contact at higher speeds.
- Components: The wiper arm assembly typically includes the main arm structure, the pivot point/mounting spline that attaches to the wiper motor shaft, the articulated joint for the wiper blade attachment, and the internal spring mechanism. It does not include the wiper blade itself, the wiper motor, or the motor linkage.
- Location: Mounted on the cowl panel at the base of the windshield on the driver’s side, attached to the external shaft of the wiper motor’s linkage.
- Material: Primarily constructed from durable metals such as steel or aluminum, often painted or coated in a matte black finish for corrosion resistance and aesthetic integration with the vehicle’s exterior.
- Design: Precisely engineered in terms of length, sweep angle, and spring tension to match the specific curvature and dimensions of the Maserati GranCabrio and GranTurismo windshields, ensuring optimal wiping performance and even pressure distribution.
Steering Rack Assembly (LHD)
SKU:
321591
$2,934.00
- Type: A complete steering rack and pinion assembly, which is the core component of the vehicle’s steering system. For these Maserati models, it is typically a hydraulic power steering rack, meaning it uses hydraulic fluid pressure to assist the driver’s steering effort. The “LHD” designation is crucial, indicating it is designed for vehicles where the driver sits on the left side of the car. The “M139HL” reference in the part description points to its compatibility with the specific chassis and steering system architecture found in the GranTurismo/GranCabrio (which share some heritage with the M139 Quattroporte).
- Function: The primary functions of this steering rack assembly are fundamental to vehicle control, driver feedback, and safety:
- Translates Steering Input: Converts the rotational motion of the steering wheel into the linear (side-to-side) motion required to turn the front wheels via the tie rods.
- Power Assistance: Provides hydraulic power assistance, significantly reducing the effort required by the driver to turn the steering wheel, especially at low speeds or during parking maneuvers.
- Road Feedback: Transmits sensory information from the road surface back to the driver through the steering wheel, providing crucial feedback on traction, road conditions, and vehicle behavior.
- Steering Precision: Engineered for high precision and minimal play, ensuring accurate and responsive steering, vital for a performance-oriented vehicle like a Maserati.
- Components: A complete steering rack assembly typically includes:
- The rack gear (a linear rod with teeth)
- The pinion gear (which meshes with the rack)
- The rack housing
- Internal hydraulic power steering components (valves, pistons, seals, fluid passages)
- Power steering lines connection points
- Inner tie rod ends (often directly integrated or attached with protective boots).
- Mounting points for attachment to the vehicle’s subframe.
- It generally does NOT include the outer tie rod ends, power steering pump, reservoir, or fluid.
- Location: Mounted horizontally, typically behind the engine or suspension crossmember, between the front wheels. The steering column connects to the pinion gear, and the tie rods extend from the rack to the steering knuckles.
- Material: Constructed from robust materials like cast iron or aluminum for the housing, and hardened steel for the rack and pinion gears, designed to withstand immense forces, provide durability, and maintain precise tolerances.
- Design: Precisely engineered and calibrated to the specific steering ratio and hydraulic assist requirements of the Maserati GranCabrio and GranTurismo. The “LHD” specific design ensures correct pedal and steering column alignment for left-hand drive markets.