Spectra Premium M401L Ford Mustang Driver Side Partial Quarter Panel Patch

The Spectra Premium M401L is a driver side (left) partial quarter panel patch designed as a direct OE-style replacement for classic Ford Mustang restorations and rust repair. Engineered to match the original equipment's fit, form, and function, this panel allows you to surgically remove corroded or damaged sections and restore structural integrity with a precision-fit steel replacement.

Key Features:

• High-gauge rust-resistant steel construction for maximum durability and long-term performance
• OE fit, form, and function — engineered to replicate factory specifications for a seamless installation
• No logos or part numbers stamped on the panel — finish-ready surface for a clean, professional result
• Classic car benchmark quality — Spectra Premium body panels have set the standard in the classic car restoration market for over 20 years
• Protective packaging — double-layered foam wrap and heavy-gauge corrugated board to ensure the panel arrives undamaged and ready to install
• Sold individually as a single panel

Whether you're tackling a full Mustang restoration or addressing localized rust damage near the lower rear quarter and wheel well area, the M401L delivers a factory-grade fit without the cost of new OEM sheet metal. Spectra Premium's decades of manufacturing expertise make this panel a trusted choice among classic car builders and body shops alike.