Brian Crower BC0040S Honda/Acura K20A/K20Z, F20C/F22C - High Miles Dual Valve Spring / Steel Retainer / Seat Kit

Brian Crower BC0040S is an application-specific valve spring and retainer package for Honda/Acura K20A/K20Z, F20C/F22C - High Miles. The matched components are intended to provide controlled spring pressure and stable valvetrain operation in performance applications when installed to the correct height and clearance.

Fitment / Application

Honda/Acura K20A/K20Z, F20C/F22C - High Miles

Product Details

• Manufacturer: Brian Crower
• Manufacturer Part Number: BC0040S
• Product Type: Valve Spring & Retainer Kit
• Fitment / Application: Honda/Acura K20A/K20Z, F20C/F22C - High Miles
• Spring Type: Dual
• Spring Part Number: BC1040
• Retainer: BC2011
• Retainer Material: Steel
• Kit Includes: Valve springs, Retainers, Spring seats

Brian Crower Spring Specifications

• Free Length: 2.025"
• Seat Pressure: 1.590" @ 80 lbs
• Open Pressure: 1.110" @ 250 lbs
• Coil Bind: 1.030"
• Net Cam Lift: 0.550" / 13.97 mm
• Spring Seat: BC2904

Installation / Application Notes

Brian Crower notes that late-model Honda cylinder heads (after 2004) may require BC2940 keepers to correctly accommodate BC2010/BC2011-style retainers because Honda changed the keeper-groove angle. Confirm keeper-to-retainer compatibility before assembly.

Fitment Note

We identify many performance components by engine family rather than by every individual chassis. Verify the engine code, cylinder head/valvetrain configuration, and required supporting components before ordering, especially on engine swaps or modified vehicles.

Always verify installed height, coil-bind clearance, retainer-to-seal/guide clearance, and camshaft lift before final engine assembly.