This Brian Crower valve spring and retainer component is an exact-part-number engine component with verified coverage that includes the 2005-2010 Scion tC Base application listed below. Match manufacturer part number BC0340, the complete vehicle application, engine family and generation, dimensions, companion components, and every manufacturer note before ordering.

Key Features

• Dual Valve Spring Design: Progressive rate springs with beehive inner for precise control and coil bind resistance up to 0.500 in lift.
• Complete Kit: Includes 16 springs, retainers, valve seals, and keepers for full DIY valvetrain refresh.
• A: Up to 0.500 in with proper installed height and clearance.
• Titanium Retainers: Ultra-lightweight 10g Ti8Al1V4 retainers reduce valvetrain mass for quicker revs and less stress on springs.
• Tools required: spring compressor, valve spring tool, micrometer engine head removal needed.
• Compatible with stock or aftermarket cams up to 0.500 in lift.

Fitment

Specifications

What’s Included

One new Brian Crower valve spring and retainer component identified by manufacturer part number BC0340. Supporting engine components are included only when expressly stated for this exact part number.

About Brian Crower

Brian Crower develops camshafts, connecting rods, crankshafts, valvetrain components, gaskets, and related engine internals for performance applications. Selection and assembly remain exact-engine, exact-dimension, and exact-part-number specific.

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Browse the Brian Crower collection for related engine components.

Frequently Asked Questions

Will this Brian Crower part fit my 2005-2010 Scion tC Base?
That application is listed, but confirm the exact part number, engine family and generation, production split, dimensions, required companion parts, and every Brian Crower application note before ordering.

What should be measured before installation?
Confirm every applicable journal, bore, stem, seat, spring, retainer, piston-to-valve, bearing, fastener, and running clearance against the current Brian Crower instructions and the engine builder’s specifications before final assembly.

Are all supporting parts included?
Only components expressly listed for this exact manufacturer part number are included. Bearings, pistons, rings, springs, retainers, locks, guides, seals, gaskets, fasteners, fluids, tools, and tuning may be separate.

Installation Instructions

Follow the current Brian Crower instructions, engine builder specifications, and factory service information for this exact part number. Work in a clean environment, inspect and measure all mating components, verify required clearances, use the specified lubricants and fasteners, set valve timing and torque values correctly, rotate the assembly by hand, establish oil pressure before startup, and complete professional calibration when required. Professional engine assembly is strongly recommended.