Engine & Performance Warehouse B303HP Valve Spring Inserts Type B .700 x 1.48 - 50 Pack

The Engine & Performance Warehouse B303HP is a 50-piece pack of Type "B" Valve Spring Inserts (VSI) measuring .700" x 1.48", designed for use with new valve springs during engine rebuilds and valve jobs. Made in the U.S.A., these valve spring inserts are the preferred choice of professional engine builders over standard flat valve spring shims.

Key Features:

• Type B design engineered specifically for use with new valve springs
• Dimensions: .700" x 1.48" for precise fitment
• Pack of 50 pieces — ideal for full engine rebuilds and machine shop use
• Patented serrations promote proper oil channeling and heat dissipation
• Extends valve train life by reducing wear at the spring seat
• Made in the U.S.A. to meet the demands of professional engine rebuilders

Valve Spring Inserts (VSIs) have been the go-to solution for engine builders since 1959, consistently outperforming plain valve spring shims. Their unique serrated design allows for proper lubrication and heat management at the valve spring seat, making them a critical component in any quality valve job or engine rebuild.