Undertrays Chassis & Engine

Underbody Protective Plate. Porsche 928 1978-86

92850494104/1

Product Information

Underbody Protective Undertray Panel

High-quality, precision-fitting underbody protective panel designed for Porsche 928 models up to model year 1986.

This authentic undertray plays a crucial role in protecting the underside of the vehicle while also improving aerodynamic airflow. Often overlooked during maintenance, original panels are frequently missing or damaged due to age or contact with road surfaces.

Fits:

Porsche 928 4.5L 1978-82
Porsche 928S 4.7L 1981-83
Porsche 928S2 4.7L 1984-86

Diagram ref no 16

Manufactured from powder-coated aluminium, this replacement panel offers excellent durability, corrosion resistance, and long-term protection—making it ideal for restoration or replacement of worn or missing underbody components.

Key Features

• Direct replacement underbody panel
• Suitable for Porsche 928 (up to 1986)
• Precision fit for OEM-style installation
• Powder-coated aluminium construction
• Improves airflow under the vehicle
• Reduces wind noise and turbulence
• Durable and corrosion-resistant

Function and Purpose

This undertray is an essential part of the vehicle’s underbody system.

It helps to:

• Protect critical components from debris and damage
• Improve aerodynamic airflow beneath the car
• Reduce wind noise at speed
• Support overall vehicle efficiency and performance

Why Replace Your Undertray Panel

Underbody panels are often damaged or missing over time.

Common issues include:

• Cracks or deformation from road contact
• Missing panels due to previous repairs
• Increased wind noise
• Reduced aerodynamic efficiency

Replacing the panel restores both protection and original driving characteristics.

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About Undertrays Chassis & Engine

Protect your Porsche’s vital components and optimise aerodynamics with genuine Porsche and reproduction undertrays for the chassis and engine from Design911. These panels are designed to shield the underbody and engine bay from debris, water, and road damage, while also improving airflow and vehicle stability at speed.

Each undertray is precision-manufactured to OEM specifications, ensuring perfect fitment, structural strength, and long-term durability. Whether replacing a damaged belly pan or restoring a classic Porsche’s underbody, our selection includes factory-original and high-quality reproduction undertrays to suit every model - from early air-cooled 911s to the latest Taycan and 992 series.

Constructed from lightweight yet durable materials such as ABS plastic, aluminium, or composite blends, these panels combine protection, performance, and authenticity to keep your Porsche in peak condition.

Genuine Porsche Undertrays
Factory-original undertrays built to Porsche’s exact specifications. Offer superior fitment, durability, and aerodynamic precision.

Reproduction Undertrays & Panels
High-quality reproduction alternatives offering OEM-grade protection and compatibility for a range of Porsche models - ideal for restorations.

Engine Undertrays & Guards
Protect the engine bay from dirt, heat, and road debris. Designed for easy installation and improved airflow efficiency.

Chassis Undertrays & Belly Pans
Full-length chassis panels that reduce drag and shield underbody components, maintaining Porsche’s factory aerodynamic performance.

Mounting Brackets & Fixing Hardware
OEM-spec clips, screws, and brackets required for secure undertray installation, ensuring a vibration-free and stable fit.

Classic Porsche Underbody Panels
Authentic reproduction undertrays and guards for heritage models such as the 911 Classic, 964, and 993 — essential for concours restorations.

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Undertrays Chassis & Engine

Undertrays Chassis & Engine