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Looking for aftermarket parts to modify or upgrade your 2003 Avanti II with engine components? At Tunersports.com we carry a huge selection of the top name brand performance engine component parts and accessories.
 IN STOCK Cometic Gasket Oil Pan Gaskets C5173Cometic GM Gen-3/4 Small Block V8 Oil Pan Gasket - Except LS1/LS6 Corvette: Upper to Block $49.42
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 IN STOCK - LOW Cometic Gasket Head Gaskets CF1013Cometic Header Bolts M8 - 1.25 x 25mm Grade 5 Carbon Steel w/ Compact Head & Black Oxide Finish $37.30
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$67.31
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 $72.46
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 $45.58
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 $54.99
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 IN STOCK King Engine Bearings Main Bearings MB5293SIKing GM 294/325/345/364CI 4.8/5.3/5.7/6.0L L20/LS1/LS2/LS4/LS6 Main Bearing Set - Size STD $74.03
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 IN STOCK King Engine Bearings Performance Rod Bearings CR807HPNKing Engine Bearings Chevy LS1/LS6/LS3 Performance Rod Bearing Set - Size STD $99.09
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 IN STOCK King Engine Bearings Performance Main Bearings MB5013XPKing Engine Bearings Chevy LS1/LS6/LS3 Performance Main Bearing Set - Size STD $169.71
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 IN STOCK Cometic Gasket Head Gaskets C5489-040Cometic GM LS1 SB 4.100in Bore .040in MLS-5 Head Gasket $102.70
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 IN STOCK King Engine Bearings Performance Rod Bearings CR807XPNKing Engine Bearings Chevy LS1/LS6/LS3 Performance Rod Bearing Set - Size STD $108.79
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IN STOCK King Engine Bearings Performance Main Bearings MB5013XPKing Engine Bearings Chevy LS1/LS6/LS3 Performance Main Bearing Set - Size STD $169.71
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 IN STOCK King Engine Bearings Performance Rod Bearings CR807XPNSTDXKing Engine Bearings Chevy LS1/LS6/LS3 Performance Rod Bearing Set - Size STDX $108.79
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 $300.06
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 IN STOCK King Engine Bearings Performance Main Bearings MB5013XPSTDXKing Engine Bearings Chevy LS1/LS6/LS3 Performance Main Bearing Set - Size STDX $169.71
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 IN STOCK King Engine Bearings Cam Bearings CS5503HPTKing Engine Bearings High Performance Cam Bearing Set - Coated $167.59
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