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Choose your trim in My Garage to confirm exact fit.
Exact-fit parts for the 2003 Honda Civic Si.
Beck Arnley
Part # 152-0891
$122.22
GMB
Part # 520-1021
$73.25
DeatschWerks
Part # 9-307-1009
$189.00
DeatschWerks
Part # 13U-01-0450-4
$340.90
AEM
Part # 50-1220
$153.55
DeatschWerks
Part # 9-651-1009
$159.00
US Motor Works
Part # USEP8229
$43.33
Fel-Pro
Part # ES70599
$7.08
Beck Arnley
Part # 158-0895
$10.73
DeatschWerks
Part # 9-401-608-7040
$1109.00
Autobest
Part # F327S
$3.62
DeatschWerks
Part # 17U-08-0750-4
$449.54
Autobest
Part # F4577A
$121.57
Beck Arnley
Part # 158-0889
$7.36
Hitachi
Part # FIJ0062
$68.74
Standard Motor Products
Part # SK1
$6.43
Standard Motor Products
Part # SK14
$6.44
Skyward Automotive
Part # SKEFP501
$18.75
Grams Performance
Part # G2-1000-0601
$498.34
GB Remanufacturing
Part # 8-038
$6.69
This page groups parts listed for the 2003 Honda Civic Si. Some products fit every trim, while others depend on submodel, engine, drivetrain, or brake package. Use your trim in My Garage or the product page fitment check to confirm exact fit.
We offer a wide selection of fuel injectors & pumps parts for the 2003 Honda Civic Si. This page narrows the catalog to the year, make, and model; use your trim on product pages to confirm exact fit when a part only fits certain submodels.
We carry parts from trusted brands including DeatschWerks, Delphi, Standard Motor Products, Autobest, and Grams Performance, plus many more. Filter by brand to find your preferred manufacturer.
Most in-stock items ship within 1-2 business days. Shipping rates are calculated at checkout based on your location.
Warranty coverage varies by manufacturer but typically ranges from 1 year to lifetime. Each product page includes specific warranty information from the manufacturer.
