This Brian Crower valve spring and retainer component is an exact-part-number engine component with verified coverage that includes the 1993-2005 Lexus GS300 Base application listed below. Match manufacturer part number BC0300, the complete vehicle application, engine family and generation, dimensions, companion components, and every manufacturer note before ordering.

Key Features

• Seat: 1.325″ @ 80 lbs.
• Open: 0.980″ @ 158 lbs.
• Net Cam Lift: 0.460″ / 11.68mm.
• Direct-fit upgrade for compatible engines.
• 1993-2005 lexus gs300 base~2001-2005 lexus is300 base~2002-2005 lexus is300 sportcross~1992-2000 lexus sc300 base~1993-1998 toyota supra base~1993-1998 toyota supra twin turbo.

Fitment

Specifications

What’s Included

One new Brian Crower valve spring and retainer component identified by manufacturer part number BC0300. 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.

Related Brian Crower Products

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• Brian Crower Subaru BRZ/Scion FR-S/Toyota GT86 4UGSE Single Spring & Titanium Retainer Kit w/ Seats

Browse the Brian Crower collection for related engine components.

Frequently Asked Questions

Will this Brian Crower part fit my 1993-2005 Lexus GS300 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.