This Ferrea Valve Spring Kit upgrades the valvetrain on the Toyota Supra 3.0L B58 turbo (and BMW B58) inline-six with springs designed for improved valve control over stock at elevated boost and rpm. Sold as a complete kit.
| Type | Valve spring kit |
| Application | Toyota Supra 3.0L / BMW B58 turbo |
| Use | Boost / high-rpm valvetrain upgrade |
| Part Number | KT4048 |
Shipping: In-stock orders placed before 3 PM EST ship the same day, and everything else ships within 24 hours. Standard, expedited, and overnight options are available at checkout. Backordered items ship as soon as we get them back in stock. Contact us for lead times. See the full Shipping Policy.
Returns: 30-day returns on new, unused items in original packaging. See the full Refund Policy.
