
FERREA S10177 Valve Spring for TOYOTA GR Supra (A90 / A91)
This item is considered special order and is not available for immediate pickup or dispatch. Price and ETA may vary. Please note that no returns, cancellations, or refunds allowed on special orders.
FERREA S10177 Valve Spring for TOYOTA GR Supra (A90 / A91)
Kelberg Warehouse
Auf der Struth 4
53539 Kelberg
Germany
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This item is considered special order and is not available for immediate pickup or dispatch. Price and ETA may vary. Please note that no returns, cancellations, or refunds allowed on special orders.
This item is considered special order and is not available for immediate pickup or dispatch. Price and ETA may vary. Please note that no returns, cancellations, or refunds allowed on special orders.
Description FERREA S10177 Valve Spring for TOYOTA GR Supra (A90 / A91)
The FERREA S10177 valve spring set is engineered for the 3.0L DOHC 24-valve B58 turbo engine used in the Toyota GR Supra (A90/A91). Designed as a PAC-enhanced single spring made from a special alloy, it provides the required seat and open pressures for upgraded valvetrain stability under increased boost and high-RPM operation. The spring specification supports both intake and exhaust sides with defined lift limits to ensure proper clearance to valve seals and retainers.
- PAC-enhanced single spring construction using a special alloy
- Engineered for B58 valvetrain stability under high load
- Defined seat and open pressures for intake and exhaust positions
- Compatible only with Ferrea titanium retainers and Ferrea hat seat locators
- Designed with strict maximum lift limits to maintain retainer-to-seal clearance
Specifications:
- Outside Diameter: 22.53 mm
- Inside Diameter: 15.52 mm
- Seat Pressure: 70 lbs @ 39 mm (INT) / 85 lbs @ 37.7 mm (EXH)
- Open Pressure: 175 lbs @ 29 mm (INT) / 185 lbs @ 27.7 mm (EXH)
- Rate Inch: 253 lbs
- Coil Bind: 26 mm
- Max Net Lift: 11.5 mm (INT) / 11 mm (EXH)
- Required Components: Ferrea Titanium Retainers E11146 (EXH) & E11147 (INT)
- Required Components: Ferrea Hat Seat Locators SL1175 (EXH) & SL1176 (INT)
