Looking for aftermarket parts to modify or upgrade your Hummer H3 with engine components? At Tunersports.com we carry a huge selection of the top name brand performance engine component parts and accessories for your H3.
Whether you have a 2006 or 2010 Hummer H3 in Adventure to X trim we have you covered. With engine components from bearings to valve springs, retainers we have 370 H3 engine component mods available. All parts have free shipping to the Continental US 48 States.
 IN STOCK - LOW Cometic Gasket Head Gaskets C15514-051Cometic GM LS1/LS2/LS3/LS6 Gen-III/IV Small Block V8 .051in MLS Cylinder Head Gasket 4.070in Bore $99.40
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 IN STOCK ACL Race Series Main Bearings 5M7298H-01ACL Chevy V8 4.8/5.3/5.7/6.0L Race Series .01mm Oversized Main Bearing Set $152.81
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 IN STOCK - LOW Victor Reinz Throttle Body Gaskets GS33410MAHLE Original Buick Allure 09-08 Throttle Body Gasket $24.49
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IN STOCK - LOW Mahle OE OE Moly Ring Sets 41859CPMahle Rings GMC Trk 4.8L/5.3L 1999-2002 Moly Ring Set $58.48
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$56.96
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$58.63
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 IN STOCK King Engine Bearings Cam Bearings CS5171HPTKing 06-13 GM LS .775in Wide Performance Coated Cam Bearing Set $137.56
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 IN STOCK - LOW Fluidampr Dampers - Domestic 760111Fluidampr Chevy LS3/L99/Camaro w/ Stock Pulley Steel Internally Balanced Damper $482.80
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IN STOCK Cometic Gasket Head Gaskets C5489-040Cometic GM LS1 SB 4.100in Bore .040in MLS-5 Head Gasket $99.40
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 IN STOCK Cometic Gasket Head Gaskets C5505-051Cometic GM LS Series V8 4.040in bore .051 inch MLX Headgasket $121.52
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IN STOCK King Engine Bearings Cam Bearings CS5171HPTKing 06-13 GM LS .775in Wide Performance Coated Cam Bearing Set $137.56
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 IN STOCK Cometic Gasket Head Gaskets C5751-040Cometic GM LS1 SB 4.060 inch Bore .040 inch MLS Headgasket $99.40
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 IN STOCK ACL Race Series Main Bearings 5M7298H-STDACL Chevy V8 4.8/5.3/5.7/6.0L Race Series Standard Size Main Bearing Set $152.81
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 IN STOCK Cometic Gasket Head Gaskets C5475-040Cometic GM LS1 SB 3.910 inch Bore .040 inch MLS Headgasket $99.40
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 IN STOCK Clevite Main Bearing Set MS2199HClevite Chevrolet V8 293-325-346-364 1997-07 Main Bearing Set $165.61
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 IN STOCK Clevite Camshaft Bearing Set SH2157SClevite Chevrolet V8 4.8L-5.3L-6.0L-6.2L-7.0L 2003-2010 Camshaft Bearing Set $101.64
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 IN STOCK Clevite Main Bearing Set MS2199PClevite Tri Armor Chevrolet V8/ 293-325-346-364/ 1997-00 Main Bearing Set $128.84
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$123.44
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