2003-2006 (5th Generation) Pontiac GTO Parts

The GOAT! The GTO, with its rich pedigree was reborn in 2003 as 2-door wolf in sheep's clothing. Available in both LS1 (6.0L) and LS2 (6.0L) versions and with automatic and manual transmission options the Pontiac GTO was a great coupe with growth potential. Power-wise the LS1 made 350HP/365TQ and the LS2 400HP/400TQ. Regardless of which version you've got if you just scroll a bit we can probably pack some extra HPs and TQs on your ride.

23 products
  • LSX Supercharger Intercooler Lid-XtremeCFM-
    LSX Supercharger Intercooler Lid-XtremeCFM-Black Anodized-XCFM-10149
    Sale
    LSX Supercharger Intercooler Lid
    From $1,074.95
    From $1,074.95 $1,345.00

    1 total reviews

  • Nick Williams 103mm Adjustable Rotating Throttle Body Adapter-XtremeCFM-103mm Straight (Single Gasket)-XCFM-10404
    Nick Williams 103mm Adjustable Rotating Throttle Body Adapter-XtremeCFM-110mm to 103mm Taper (Double Gasket)-XCFM-10166
    Nick Williams 103mm Adjustable Rotating Throttle Body Adapter
    $79.95
    $79.95

    1 total reviews

  • Billet Hose Menders Black Anodized-XtremeCFM-0.75" ID Hose Mender-XCFM-10000
    Billet Hose Menders Black Anodized-XtremeCFM-1.00" ID Hose Mender-XCFM-10001
    Billet Hose Menders Black Anodized
    From $9.95
    From $9.95

    1 total reviews

  • Billet Y-Block - Barbed Hose Ends-XtremeCFM-0.5" to Dual 0.5" Billet-Y Barbed Hose Ends-XCFM-10414
    Billet Y-Block - Barbed Hose Ends-XtremeCFM-1.0" to Dual 0.75" Billet-Y Barbed Hose Ends-XCFM-10088
    Billet Y-Block - Barbed Hose Ends
    From $45.95
    From $45.95
  • Pierburg CWA400 Universal Pump Install Kit-XtremeCFM-XCFM-10457
    Pierburg CWA400 Universal Pump Install Kit-XtremeCFM-XCFM-10457
    Pierburg CWA400 Universal Pump Install Kit
    $79.95
    $79.95
  • Vibrant 0.75" 3/4" 12AN Hose By The Foot
    Vibrant 0.75" 3/4" 12AN Hose
    Vibrant Silicone Hose 3/4" - 12AN - 0.750" - 2045
    From $9.95
    From $9.95 $156.99
  • Nick Williams Performance LSX 103mm Throttle Body and Hardware.
    Nick Williams Performance LSX 103mm Throttle Body and Hardware Connector View.
    Nick Williams LSX 103mm Throttle Body (NA & Boosted)
    From $689.95
    From $689.95
  • Billet LSX / LTX Idler Pulley - 45 mm / 1.772 inches Thick-XtremeCFM-
    Billet LSX / LTX Idler Pulley - 45 mm / 1.772 inches Thick-XtremeCFM-75mm Idler Pulley-XCFM-10375
    Billet LSX / LTX Idler Pulley - 45 mm / 1.772 inches Thick
    From $99.95
    From $99.95
  • Synergy Motorsports LSA Supercharger Adapter Plate
    Synergy Motorsports LSA Supercharger Adapter Plate close up view.
    ZR1/LSX Lid LSA Billet Adapter/Spacer Plate Kit
    $349.95
    $349.95
  • 1" 16AN Vibrant Silicone Hose
    1" 16AN Vibrant Silicone Hose By The Foot
    Vibrant Silicone Hose 1" - 16AN - 2047
    From $10.95
    From $10.95 $196.99
  • Cold Air Intake Couplers & Reducers-XtremeCFM-4.5" x 4.25" x 2.5" Intake Coupler Reducer-XCFM-10074
    Cold Air Intake Couplers & Reducers-XtremeCFM-4.5" x 4.0" x 2.5" Intake Coupler Reducer-XCFM-10073
    Cold Air Intake Couplers & Reducers
    From $19.95
    From $19.95
  • GM Quick Connect Female To -12AN Male-XtremeCFM-XCFM-10441
    GM Quick Connect Female To -12AN Male-XtremeCFM-XCFM-10441
    GM Quick Connect Female To -12AN Male
    $21.95
    $21.95
  • 10mm (9.89mm) Bundy Fitting Quick Connect to 3/8" Barb-XtremeCFM-90 Degree 9.89mm QC / 3/8" Barb-XCFM-10186
    10mm (9.89mm) Bundy Fitting Quick Connect to 3/8" Barb-XtremeCFM-0 Degree 9.89mm QC / 3/8" Barb-XCFM-10187
    10mm (9.89mm) Bundy Fitting Quick Connect to 3/8" Barb
    $7.95
    $7.95
  • C6 Corvette Center Trunk Tank-XtremeCFM-XCFM-10452
    C6 Corvette Center Trunk Tank-XtremeCFM-XCFM-10452
    Sale
    C6 Corvette Center Trunk Water/Ice Tank
    $424.95
    $424.95 $474.95
  • Fuel Pump Pre-Filter-XtremeCFM-6AN-XCFM-10135
    Fuel Pump Pre-Filter-XtremeCFM-8AN-XCFM-10136
    Sale
    Fuel Pump Pre-Filter
    From $19.95
    From $19.95 $24.95
  • 6-Bolt LSX Cylinder Heads-XtremeCFM-XCFM-10460
    6-Bolt LSX Cylinder Heads-XtremeCFM-XCFM-10460
    6-Bolt LSX Cylinder Heads
    $2,915.00
    $2,915.00
  • 9.65mm Bundy Fitting Quick Connect to 3/8" Barb-XtremeCFM-90 Degree 9.65mm QC / 3/8" Barb-XCFM-10190
    9.65mm Bundy Fitting Quick Connect to 3/8" Barb-XtremeCFM-45 Degree 9.65mm QC / 3/8" Barb-XCFM-10189
    9.65mm Bundy Fitting Quick Connect to 3/8" Barb
    $7.95
    $7.95
  • Vibrant 10AN 0.625 5/8" Heater Hose
    Vibrant 10AN 0.625 5/8" Heater Hose By The Foot
    Vibrant Silicone Hose 5/8" - 10AN - 0.625" - 2044
    From $8.95
    From $8.95 $146.99
  • 61mm Fuel Pump Mount/Bracket With Rubber Collar-XtremeCFM-XCFM-10213
    61mm Fuel Pump Mount/Bracket With Rubber Collar-XtremeCFM-XCFM-10213
    Sale
    61mm Fuel Pump Mount/Bracket With Rubber Collar
    $13.95
    $13.95 $19.95
  • -16 AN Weld On 1" Tube Holder-XtremeCFM-XCFM-10328
    -16 AN Weld On 1" Tube Holder-XtremeCFM-XCFM-10328
    -16 AN Weld On 1" Tube Holder
    $14.95
    $14.95
  • Injector Dynamics ID1300-Injector Dynamics-XCFM-10504
    Injector Dynamics ID1300
    $1,873.20
    $1,873.20
  • Injector Dynamics ID1050x-XtremeCFM-XCFM-10503
    Injector Dynamics ID1050x
    $1,075.20
    $1,075.20
  • GM In-Line Fuel "T" Splitter Block-XtremeCFM-XCFM-10214
    GM In-Line Fuel "T" Splitter Block-XtremeCFM-XCFM-10214
    GM In-Line Fuel "T" Splitter Block
    $34.95
    $34.95