Cool the Rear End, Preserve Performance

OER differential covers provide the protection and thermal management needed to keep classic drivetrains running strong, covering OE-style and performance-inspired covers engineered to seal the rear end while helping dissipate heat during operation. Manufactured by OER, a trusted name in OEM-accurate restoration components with proven engineering and quality control, these covers are built from durable cast aluminum with finned designs that improve cooling and extend gear oil life under real-world driving conditions.