2003 Ford Focus Engine Parts

1,557 products fit your

2003 Ford Focus

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2003 Ford Focus

Department

Street

Application

Sport Compact

Products

-70%

Speedway Replacement EPR2 O-Rings for -10 AN Fittings, Pack/5

Speedway Motors |

#6173466

Speedway Replacement EPR2 O-Rings for -10 AN Fittings, Pack/5

AN Size:

-10 AN

Material Type:

Rubber

Fitting Size 1:

-10 AN 0.755

$7.49

/bag

$25.42

-7%

Earls |

#425803110ERL

Earls 803110ERL 30 Degree -10 AN Female to -10 AN Hose Adapter

Fitting Hose Size:

-10 AN

Fitting End A:

-10 AN Female

Fitting End B:

-10 AN Hose

$59.89

/each

$64.95

Brisk |

#12190951

Brisk USA DR15ZC Multi-Spark 14mm Racing Spark Plug

Thread Pitch:

14 mm

Sold in Quantity:

Each

$14.35

/each

Maxima |

#22935901

Maxima Racing Oils 39-35901 Performance Oil, 20W50, 1 Quart

Oil Weight:

20W50

Oil Type:

Conventional

ZDDP Enhanced:

Yes

$10.99

/quart

3/8 NPT Male to 5/16 Inch Hose Barb Adapters

Speedway Motors |

#91011774

3/8 NPT Male to 5/16 Inch Hose Barb Adapters

(9)

Fitting End A:

5/16" Hose barb

Fitting End B:

3/8" NPT Male

Angle:

Straight

$11.99

/pair

Historic Indy Engines

To celebrate the upcoming 106th running of the Indianaplis 500, here's a look back at a few of the engines that have competed at the Brickyard over the years.

1946 Ford Sedan Delivery Engine Detail

Speedway Motors Product Manager Jeff K. talks about how to really make your engine bay stand out from the crowd with just a little patience, and some Speedway products.

Ford 302 Crate Engine Tech Talk

Darrian recently purchased a 302 Ford BluePrint Crate Engine for his 1962 Comet. Learn more as he walks you through what is included in the kit, it's out-of-the-box assembly and the performance metrics of the engine.

Vortec 4.8 LS Build: Horsepower Recipes, Specs, & Upgrades

The 4.8 LS engine is a salvage yard bargain vs the typical 5.3 or 6.0 LS and can still make great power for your LS swap needs.

NASCAR Engines Through the Years

In honor of NASCAR's 75th anniversary, we're taking a look at a few remarkable engines that have powered our favorite racers to victory through the years.

Gen III/IV LS Engine ID Guide

Looking to swap the venerable LS engine into your hot rod, muscle car, or classic truck? Take a look at our detailed identification guide for Gen III/IV LS engines before you hit the salvage yard or swap meet!

Ford 302 Build Combinations: Recipes for 300-500+ HP

Ford’s 302ci small block V8 is one of Ford’s best engine designs and is capable of great power with the right parts

'32 Ford Anniversary

This year's 90th anniversary of the '32 Ford reminds us of the 75th, when some of the most famous and influential Deuce hot rods gathered at the Grand National Roadster Show.

The Difference Between 1933 and 1934 Fords

Learn about the defining differences between 1933 and 1934 Fords, including interior and exterior differences.

Header Suggestions for a '33 Ford

In this Tech Tip, one of our customers asks for a suggestion on exhaust headers for his 1933 pickup.

-7%

Earls |

#425782256ERL

Earls 782256ERL Vapor Guard 90 Deg 3/8 Inch NPT to 5/16 Inch

(3)

Fitting End A:

5/16" Hose barb

Fitting End B:

3/8" NPT Male

Angle:

90 degree

$15.84

/each

$17.13

Storage -4 AN Flare Fitting Cap, Pack of 4

Speedway Motors |

#54523801

Storage -4 AN Flare Fitting Cap, Pack of 4

Sold in Quantity:

Set

AN Size:

-4 AN

$5.69

/set

Storage -6 AN Flare Fitting Cap, Pack of 4

Speedway Motors |

#54523803

Storage -6 AN Flare Fitting Cap, Pack of 4

(1)

Sold in Quantity:

Set

AN Size:

-6 AN

$4.49

/set

COMP Cams |

#2825200

COMP Cams 5200 Aluminum Vacuum Canister Reservoir, Black, Each

(1)

Overall Diameter:

5.00"

Overall Height:

7.00"

Material Type:

Steel

$74.95

/each

Equus |

#184E8444

Equus E8444 8000 Series 2-5/8 Inch Mech. Oil Pressure Gauge

(2)

Gauge Diameter:

2-5/8"

Gauge Series:

Analog

Gauge Style:

Mechanical

$38.99

/each

Equus |

#184E7234

Equus E7234 7000 Series 2 Inch Mech. Oil Pressure Gauge, 0-100PSI

Gauge Diameter:

Gauge Style:

Mechanical

Gauge Range:

0-100 psi

$13.99

/each

Fan Relay Harness Kit, Single Or Dual Fan Application Up To 40AMP

Speedway Motors |

#91740080

Fan Relay Harness Kit, Single Or Dual Fan Application Up To 40AMP

Sold in Quantity:

Each

Amperage:

40 amps

$39.99

/each

Aluminum -8 AN Female to -6 AN Male Reducer Fitting

Speedway Motors |

#472995008

Aluminum -8 AN Female to -6 AN Male Reducer Fitting

(13)

Angle:

Straight

Fitting End A:

-8 AN Female

Fitting End B:

-6 AN Male

$12.99

/each

Maxima |

#22914912

Maxima Racing Oils 22914901 Semi-Synthetic, 10W40, 12 Quarts

Oil Weight:

10W40

Oil Type:

Synthetic Blend

ZDDP Enhanced:

Yes

$225.99

/box

Maxima |

#22934505

Maxima Racing Oils 39-34505 Performance Oil, 10W40, 5 Gallons

(2)

Oil Weight:

10W40

Oil Type:

Conventional

ZDDP Enhanced:

Yes

$159.99

/each

Inline Fuel Pressure Adapter, -6 AN to -6 AN w/ 1/8Inch NPT, Black

Speedway Motors |

#61770001

Inline Fuel Pressure Adapter, -6 AN to -6 AN w/ 1/8Inch NPT, Black

(2)

Fitting End A:

-6 AN Male

Fitting End B:

-6 AN Male

Fitting End C:

1/8" NPT Female

$9.49

/each

Storage -10 AN Flare Fitting Cap, Pack of 4

Speedway Motors |

#54523807

Storage -10 AN Flare Fitting Cap, Pack of 4

(2)

Sold in Quantity:

Set

AN Size:

-10 AN

$7.39

/set

Storage -16 AN Flare Fitting Cap, Pack of 4

Speedway Motors |

#54523811

Storage -16 AN Flare Fitting Cap, Pack of 4

Sold in Quantity:

Set

AN Size:

-16 AN

$6.49

/set

-62%

Aeroquip |

#6171003

Aeroquip Straight Full Flow Swivel Hose End Fitting, Red/Blue, -8 AN

(6)

Fitting Hose Size:

-8 AN

Fitting End A:

-8 AN Female

Fitting End B:

-8 AN Hose

$20.99

/each

$56.24

Spectre 9781 Coupler, 4 in. ID, 4 in. OD

Spectre Performance |

#4659781

Spectre 9781 Coupler, 4 in. ID, 4 in. OD

(2)

Inlet Diameter:

Outlet Diameter:

$32.99

/each

Earls |

#425781605ERL

Earls 781605ERL Vapor Guard Straight 1/4 Inch NPT to 5/16 Inch

(1)

Fitting End A:

5/16" Hose barb

Fitting End B:

1/4" NPT Male

Angle:

Straight

$6.95

/each

-40%

Fragola |

#61768108

Fragola 680108-BL Real-Street Straight PTFE Hose End Fitting, -8 AN

(1)

Fitting Hose Size:

-8 AN

Fitting End A:

-8 AN Female

Fitting End B:

-8 AN Hose

$16.99

/each

$28.50

Lucas Oil |

#484101181

Lucas Oil 10118 High Mileage Oil Stabilizer, 1 Quart

Sold in Quantity:

Each

Volume:

1 quart

$17.99

/each

Lucas Oil |

#484107021

Lucas Oil 10700 20W50 Synthetic Motorcycle Oil, 1 Quart Bottle

Oil Weight:

20W50

Oil Type:

Synthetic

ZDDP Enhanced:

$10.49

/each

Anodized Aluminum -4 AN Flare Plug Fitting, Set of 4

Speedway Motors |

#54523800

Anodized Aluminum -4 AN Flare Plug Fitting, Set of 4

Fitting End A:

-4 AN

Fitting Attachment 1:

Male AN

Material Type:

Aluminum

$5.49

/set

-7%

Earls |

#425782205ERL

Earls 782205ERL Vapor Guard 90 Deg 1/4 Inch NPT to 5/16 Inch

Fitting End A:

5/16" Hose barb

Fitting End B:

1/4" NPT Male

Angle:

90 degree

$16.36

/each

$17.70

Aluminum Flare Union Adapter Fitting, Blue, -3 AN

Speedway Motors |

#6176033

Aluminum Flare Union Adapter Fitting, Blue, -3 AN

(2)

Fitting End A:

-3 AN Male

Fitting End B:

-3 AN Male

Angle:

Straight

$7.99

/each

-69%

Speedway Replacement EPR2 O-Rings for -16 AN Fittings, Pack/5

Speedway Motors |

#6173468

Speedway Replacement EPR2 O-Rings for -16 AN Fittings, Pack/5

AN Size:

-16 AN

Material Type:

Rubber

Fitting Size 1:

-16 AN 1.171

$6.49

/bag

$21.63

-7%

Earls |

#425781656ERL

Earls 781656ERL Vapor Guard Straight 3/8 Inch NPT to 5/16 Inch

(1)

Fitting End A:

5/16" Hose barb

Fitting End B:

3/8" NPT Male

Angle:

Straight

$12.93

/each

$13.98

Storage -12 AN Flare Fitting Cap, Pack of 4

Speedway Motors |

#54523809

Storage -12 AN Flare Fitting Cap, Pack of 4

Sold in Quantity:

Set

AN Size:

-12 AN

$7.09

/set

-19%

Powermaster |

#2558173

Powermaster 8173 Denso Style Race Alternator, 75A, 100mm, Natural

(1)

One Wire Alternator:

Yes

Alternator Amperage:

75 amp

Alternator Finish:

Natural

$237.99

/each

$296.25

-68%

Aeroquip |

#61710171

Aeroquip FBM4433 Black Hose End Coupler Fitting-90 Degree Angle, -8 AN

(1)

Fitting Hose Size:

-8 AN

Fitting End A:

-8 AN Female

Fitting End B:

-8 AN Hose

$35.99

/each

$115.95

-7%

Mr Gasket |

#5503701

Mr Gasket 3701 Vacuum Canister

(18)

Overall Diameter:

5.00"

Overall Height:

6.85"

Fitting End A:

.42

$78.45

/each

$84.95

-18%

Royal Purple |

#29606041

Royal Purple XPR 10W40 Racing Oil, 6 Quarts

(2)

Oil Weight:

10W40

Oil Type:

Synthetic

ZDDP Enhanced:

Yes

$131.94

/box

$161.94

40-75 PSI Billet Aluminum Fuel Pressure Bypass Regulator, Black

Speedway Motors |

#2891059-BLK

40-75 PSI Billet Aluminum Fuel Pressure Bypass Regulator, Black

(3)

Regulator Style:

Return

Material Type:

Billet Aluminum

$62.99

/each

-29%

Fragola |

#6172201051

Fragola 2201051-BL Straight Hose End Adapter Fitting, -8 AN to -6 AN

Fitting Hose Size:

-8 AN

Fitting End A:

-6 AN Female

Fitting End B:

-8 AN Hose

$11.99

/each

$16.89

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2003 Ford Focus Engine Parts

Subcategory

Part

Brand

Availability

Discounts

Engine Family

Price

Customer Rating

Products

Speedway Replacement EPR2 O-Rings for -10 AN Fittings, Pack/5

Earls 803110ERL 30 Degree -10 AN Female to -10 AN Hose Adapter

Brisk USA DR15ZC Multi-Spark 14mm Racing Spark Plug

Maxima Racing Oils 39-35901 Performance Oil, 20W50, 1 Quart

3/8 NPT Male to 5/16 Inch Hose Barb Adapters

Related Articles

Earls 782256ERL Vapor Guard 90 Deg 3/8 Inch NPT to 5/16 Inch

Storage -4 AN Flare Fitting Cap, Pack of 4

Storage -6 AN Flare Fitting Cap, Pack of 4

COMP Cams 5200 Aluminum Vacuum Canister Reservoir, Black, Each

Equus E8444 8000 Series 2-5/8 Inch Mech. Oil Pressure Gauge

Equus E7234 7000 Series 2 Inch Mech. Oil Pressure Gauge, 0-100PSI

Fan Relay Harness Kit, Single Or Dual Fan Application Up To 40AMP

Aluminum -8 AN Female to -6 AN Male Reducer Fitting

Maxima Racing Oils 22914901 Semi-Synthetic, 10W40, 12 Quarts

Maxima Racing Oils 39-34505 Performance Oil, 10W40, 5 Gallons

Inline Fuel Pressure Adapter, -6 AN to -6 AN w/ 1/8Inch NPT, Black

Storage -10 AN Flare Fitting Cap, Pack of 4

Storage -16 AN Flare Fitting Cap, Pack of 4

Aeroquip Straight Full Flow Swivel Hose End Fitting, Red/Blue, -8 AN

Spectre 9781 Coupler, 4 in. ID, 4 in. OD

Earls 781605ERL Vapor Guard Straight 1/4 Inch NPT to 5/16 Inch

Fragola 680108-BL Real-Street Straight PTFE Hose End Fitting, -8 AN

Lucas Oil 10118 High Mileage Oil Stabilizer, 1 Quart

Lucas Oil 10700 20W50 Synthetic Motorcycle Oil, 1 Quart Bottle

Anodized Aluminum -4 AN Flare Plug Fitting, Set of 4

Earls 782205ERL Vapor Guard 90 Deg 1/4 Inch NPT to 5/16 Inch

Aluminum Flare Union Adapter Fitting, Blue, -3 AN

Speedway Replacement EPR2 O-Rings for -16 AN Fittings, Pack/5

Earls 781656ERL Vapor Guard Straight 3/8 Inch NPT to 5/16 Inch

Storage -12 AN Flare Fitting Cap, Pack of 4

Powermaster 8173 Denso Style Race Alternator, 75A, 100mm, Natural

Aeroquip FBM4433 Black Hose End Coupler Fitting-90 Degree Angle, -8 AN

Mr Gasket 3701 Vacuum Canister

Royal Purple XPR 10W40 Racing Oil, 6 Quarts

40-75 PSI Billet Aluminum Fuel Pressure Bypass Regulator, Black

Fragola 2201051-BL Straight Hose End Adapter Fitting, -8 AN to -6 AN