Upgrade your BMW E30’s differential performance and reliability with the RacingDiffs Billet Diff Cover. Precision engineered for enthusiasts and track-day drivers, this cover is designed to enhance cooling efficiency and protect your differential under demanding conditions.

• Enhanced Oil Flow: The unique inner profile, developed through extensive engineering and real-world testing, accelerates oil flow and reduces oil temperature by an average of 15%.
• External Cooling Compatibility: Features three M16x1.5 oil ports, allowing seamless integration with external oil cooling systems. Perfect for endurance racing or extended track use—no welding or modifications required.
• Premium Construction:
  • Base Plate: Forged T6-7075 aluminum for exceptional strength and durability.
  • Powerflex Bushings: Supplied as standard for enhanced vibration damping and stability.
  • Complete Installation Kit: Includes side mounts, secondary mount brackets, a sealant rubber gasket, and all necessary bolts and fasteners.
• Customization: Personalize your diff cover with a custom print—simply specify your request at checkout.

Designed specifically for BMW E30 models, this billet diff cover is ideal for drivers seeking improved cooling, strength, and reliability in both street and motorsport environments.