The March Performance 4120-08 is a precision-engineered serpentine pulley kit specifically designed for 1984–1991 Chevrolet Corvette engines. This kit is built to reduce accessory drag and belt slippage while increasing efficiency and under-hood appearance. Gains of approximately 12–15 horsepower at the rear wheels are common due to improved belt control and reduced parasitic load.

Key Features:

• Designed for high-revving and performance driving
• Reduces belt throwing and slippage under load
• Increases alternator, water pump, and power steering efficiency
• Clean, performance-grade look for the engine bay

Specifications:

• Engine Compatibility: 1984–1991 Chevrolet Corvette engines
• Pulley Type: Serpentine
• Grooves: 6-rib
• Material: Combination of CNC-machined billet aluminum and steel
• Finish: High gloss black powder coat
• Includes:
  • Crank pulley
  • Alternator pulley
  • Water pump pulley
  • Power steering pulley (if applicable)
  • Hardware for installation

Applications:
Ideal for Corvette owners looking to improve accessory drive performance while adding a clean, professional appearance to their engine bay. Especially beneficial for cars with high-output electrical systems or performance cooling demands.