Looking for aftermarket parts to modify or upgrade your 2003 Honda Civic with engine components? At Tunersports.com we carry a huge selection of the top name brand performance engine component parts and accessories for your Civic.
Whether you have a 2003 Honda Civic in DX to Si trim we have you covered. With engine components from bearings to valves we have 329 Civic engine component mods available. All parts have free shipping to the Continental US 48 States.
 $52.70
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 IN STOCK - LOW Wiseco Piston Sets - 4 Cyl K624M75Wiseco Honda D17 Turbo -14cc 1063 x 75.0MM Piston Shelf Stock Kit $683.99
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 IN STOCK Wiseco Piston Sets - 4 Cyl K624M755Wiseco Honda D17 Turbo -14cc 1063 x 75.5MM Piston Shelf Stock Kit $683.99
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 $154.85 SALE
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 IN STOCK Weapon R Intake Manifold 501-122-112Weapon R Honda / Acura K20 Race Sheetmetal Intake Manifold $535.35 SALE
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 IN STOCK - LOW Victor Reinz Cylinder Head Bolts GS33607MAHLE Original Acura Csx 10-07 Cylinder Head Bolts $72.17
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 IN STOCK Skunk2 Racing Head Studs 661-05-0001Skunk2 Honda / Acura B and K Series Head Studs - Fits B18 Vtec K20 K24 |
 IN STOCK Skunk2 Racing Ultra Intake Manifold 307-05-9565Skunk2 Honda/Acura Remote Iavc Relocation Kit For B/D Series Ultra Race Intake Manifold |
 IN STOCK Skunk2 Racing Thermal IM Gasket 372-05-0265Skunk2 Honda and Acura Ultra Series Street / Race Thermal Intake Manifold Gasket B-Series |
 IN STOCK Skunk2 Racing Ultra Intake Manifold 907-05-0030Skunk2 Honda and Acura Ultra Street Manifold Plenum Gasket - B/K |
 IN STOCK ACL Race Series Main Bearings 5M1959H-STDACL Acura B17A1/B18A1/B18B1 / B18C1/B18C5 VTEC / Honda K20A3/K20A2/K24A Standard Size High Performa $76.56
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 IN STOCK ACL Race Series Main Bearings 5M1959HX-STDACL Acura B17A1/B18A1/B18B1 / B18C1/B18C5 VTEC / Honda K20A3/K20A2/K24A Standard Size High Performa $76.56
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 IN STOCK King Engine Bearings Performance Main Bearings MB5259XPCKing Honda A-Series/B-Series/K-Series (Size STD) pMaxKote Performance Main Bearing Set $80.95
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IN STOCK King Engine Bearings Performance Main Bearings MB5568XPKing Acura D16A1 / 97-01 Honda H22A4 / 98+ F23A (Size STD) Performance Main Bearing Set $87.33
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 IN STOCK Cometic Gasket Head Gaskets C4312-030Cometic Honda K20/K24 88mm Head Gasket .030 inch MLS Head Gasket $102.89
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IN STOCK King Engine Bearings Performance Main Bearings MB5259XPCSTDXKing Honda A-Series/B-Series/K-Series (Size STDX) pMaxKote Performance Main Bearing Set $83.89
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 IN STOCK Skunk2 Racing Ultra Intake Manifold 307-05-0600Skunk2 Ultra Series Street K20A/A2/A3 K24 Engines Intake Manifold |
 $473.45
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 IN STOCK Manley Performance Conrods TTuff I-Bm -4 Cyl 14404-4Manley 02+ Acura RSX 2.0 V-Tec DOHC (K20) Turbo Tuff Pro Series I Beam Connecting Rod Set |
 IN STOCK Cometic Gasket Head Gaskets C4311-030Cometic Honda K20/K24 87mm Head Gasket .030 inch MLS Head Gasket $102.89
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