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2003 Ford Focus Spark Plug

5 items

Spark plug replacement helps cure misfires, rough idle, weak starts, and wasted fuel. Pick the right socket size and restore crisp, reliable ignition.

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4 Pack Iridium Spark Plug | A-Premium APSP1004 Pack Iridium Spark Plug | A-Premium APSP100
A-Premium®Part # APSP100
4 Pack Iridium Spark Plug | A-Premium APSP100
4.921 Reviews
CA$47.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 2011 - 2011 Ford Focus, 2010 - 2013 Ford Transit Connect, 2010 - 2011 Ford Ranger, 2008 - 2008 Mazda Tribute, 2006 - 2008 Ford Escape, 2006 - 2007 Mazda 5, 2005 - 2008 Mercury Mariner, 2005 - 2006 Mazda Tribute, 2005 - 2005 Ford Escape, 2003 - 2005 Mazda 6, 1999 - 2001 Oldsmobile Alero, 1999 - 2001 Pontiac Grand Am, 1997 - 1999 Chevrolet Malibu, 1996 - 2002 Chevrolet Cavalier, 1996 - 2002 Pontiac Sunfire, 1996 - 1998 Buick Skylark, 1996 - 1998 Oldsmobile Achieva, 1996 - 1998 Pontiac Grand Am, 1995 - 1995 Buick Skylark, 1995 - 1995 Chevrolet Cavalier
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2003 Ford Focus
Item LocatedCanada
Quantity4
MaterialIridium + Platinum
ConditionNew
item #10051PTN
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4 Pack Iridium Spark Plug | A-Premium APSP049
A-Premium®Part # APSP049
4 Pack Iridium Spark Plug | A-Premium APSP049
4.921 Reviews
CA$39.99
CA$44.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 2005 - 2010 Ford Focus, 2005 - 2005 Ford Escape, 2004 - 2005 Mazda 3, 2004 - 2005 Mazda 3, 2003 - 2007 Ford Focus
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2003 Ford Focus
Item LocatedCanada
Quantity4
MaterialIridium + Platinum
ConditionNew
item #100529R6
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4 Pack Iridium Spark Plug | A-Premium APSP042
A-Premium®Part # APSP042
4 Pack Iridium Spark Plug | A-Premium APSP042
4.921 Reviews
CA$53.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 2017 - 2018 Ford Fusion, 2017 - 2017 Chevrolet Impala, 2016 - 2016 Chevrolet Malibu Limited, 2015 - 2016 Chevrolet Colorado, 2015 - 2016 GMC Canyon, 2015 - 2015 Cadillac ATS, 2014 - 2018 Ford Transit Connect, 2014 - 2016 Chevrolet Impala, 2014 - 2015 Buick Verano, 2014 - 2015 Mazda 5, 2013 - 2017 Ford Fusion, 2013 - 2016 Ford C-Max, 2013 - 2015 Chevrolet Malibu, 2013 - 2014 Chevrolet Malibu, 2013 - 2013 Cadillac ATS, 2012 - 2016 Buick Verano, 2012 - 2014 Chevrolet Captiva Sport, 2012 - 2014 Chevrolet Orlando, 2012 - 2013 Mazda 3, 2012 - 2012 Mazda 3 Sport
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2003 Ford Focus
Item LocatedCanada
Quantity4
MaterialIridium + Platinum
ConditionNew
item #10052CXV
Show less
4 Pack Iridium Spark Plug | A-Premium APSP232
A-Premium®Part # APSP232
4 Pack Iridium Spark Plug | A-Premium APSP232
4.921 Reviews
CA$48.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 2005 - 2010 Ford Focus, 2005 - 2005 Ford Escape, 2004 - 2005 Mazda 3, 2004 - 2005 Mazda 3, 2003 - 2007 Ford Focus
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2003 Ford Focus
Item LocatedCanada
Quantity4
MaterialIridium + Platinum
ConditionNew
item #10051X3D
Show less
4 Pack Iridium Spark Plug | A-Premium APSP103
A-Premium®Part # APSP103
4 Pack Iridium Spark Plug | A-Premium APSP103
4.921 Reviews
CA$39.99
CA$44.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 2000 - 2004 Ford Focus, 1998 - 2002 Ford Escort, 1997 - 1999 Mercury Tracer, 1997 - 1997 Ford Escort, 1996 - 1997 Isuzu Hombre, 1995 - 1997 Pontiac Sunfire, 1994 - 1997 Chevrolet Cavalier, 1994 - 1997 Chevrolet S10, 1994 - 1997 GMC Sonoma, 1994 - 1996 Buick Century, 1994 - 1996 Chevrolet Beretta, 1994 - 1996 Chevrolet Corsica, 1994 - 1996 Oldsmobile Cutlass Ciera, 1994 - 1995 Chevrolet LLV, 1991 - 1996 Ford Escort, 1991 - 1996 Mercury Tracer
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2003 Ford Focus
Item LocatedCanada
Quantity4
MaterialIridium + Platinum
ConditionNew
item #1000KH1U
Show less

What does a spark plug do?

A spark plug is like the ignition spark that gets your engine firing on all cylinders—literally. It’s a small but vital part that plays a huge role in the engine’s performance. When you start your car, the spark plug generates a spark that ignites the fuel and air mixture inside the engine’s cylinders. This controlled explosion powers the engine’s pistons, which then turn the crankshaft and keep the vehicle moving. Without the spark plug, the engine would fail to combust the fuel, and your car simply wouldn’t start.

Not only does the spark plug create this spark, but it also helps keep the combustion process efficient. A properly working spark plug ensures smooth engine performance, better fuel efficiency, and lower emissions. Over time, spark plugs wear out and can affect everything from acceleration to engine misfires. So, while it’s a small part, its job is crucial for your vehicle to run properly and efficiently.

Symptoms of a bad spark plug

Bad spark plugs can cause several noticeable symptoms in your vehicle. You might experience engine misfires, where the engine runs unevenly, jerks, or stalls. Poor acceleration is another sign, with your car feeling sluggish or slow to respond when you press the gas pedal. A rough idle, where the engine shakes or vibrates at a stop, is also common. If you notice your car is using more gas than usual, it could be due to decreased fuel efficiency caused by faulty spark plugs. Hard starting, where the engine takes longer to crank, and the Check Engine light coming on are also indicators. Lastly, you may see increased exhaust emissions, with a strong gasoline smell or black smoke coming from the tailpipe. If you notice any of these, it’s a good idea to check and replace your spark plugs.

Get the best spark plugs here at A-Premium

Say goodbye to rough idling, engine misfires, or starting issues with the new spark plugs from A-Premium. Our spark plugs are compatible with virtually all makes and models across a wide range of heat ratings. Shop online now and enjoy free shipping and fast delivery.

At A-Premium, we make it simple to find the perfect parts for your vehicle. If you're asking, “Which spark plugs do I need?” just enter your car’s year, make, model, and engine details at the top of this page, and we'll help you choose the right spark plugs. For example, if you need spark plugs for your Honda Civic, just enter its information, and we’ll recommend the perfect fit. Shop now!

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