2003 BMW 525i Ignition and Tune-Up Products
Find Your Specific 2003 BMW 525i Ignition and Tune-Up Products
Below you will find various in-demand BMW Ignition and Tune-Up Products, components and accessories for your 2003 525i. Advance Auto Parts has popular 525i parts like Ignition Sensors, Ignition Coils and Boots, Ignition Switches and more. You’ll also find aftermarket and OEM Ignition and Tune-Up Products for other 525i model years including
1993,
1994,
1995,
2001,
2002,
2004,
2005,
2006,
2007 and more. Select a category of 2003 BMW 525i Ignition and Tune-Up Products below and start saving instantly.
Popular 2003 BMW 525i Ignition and Tune-Up Products Categories
Essential Ignition and Tune-Up Products for 2003 BMW 525is
Carquest Premium – Carquest Knock Sensor, SBC3898 (Part No.SBC3898)
from
$212.99
Carquest Knock Sensors respond to a wide range of engine knock frequencies providing accurate engine condition to the ECM for optimal ignition timing. Highest quality piezoceramic element manufactured to tight tolerances for increased durability. All Carquest Knock Sensors are designed to meet or exceed OEM specifications at our ISO TS16949 manufacturing facilities.
See More
Encore Automotive – Encore Automotive Knock Sensor, Genuine OE, SKS-G30002 (Part No.SKS-G30002)
from
$153.99
Encore Automotive Genuine OE knock sensor detects excessive/unusual pulses caused by the engine ignition and makes proper adjustments to reduce the risk of damaging pistons. Encore Automotive is dedicated to bringing the latest original equipment technologies to the Aftermarket to provide the highest overall value.
See More
Carquest Premium – Carquest Knock Sensor, SBC4019 (Part No.SBC4019)
from
$83.99
Carquest Knock Sensors respond to a wide range of engine knock frequencies providing accurate engine condition to the ECM for optimal ignition timing. Highest quality piezoceramic element manufactured to tight tolerances for increased durability. All Carquest Knock Sensors are designed to meet or exceed OEM specifications at our ISO TS16949 manufacturing facilities.
See More
Autolite – Autolite Platinum Spark Plug: Enhanced Durability & Improved Performance, AP3923 (Part No.AP3923)
from
$5.49
Autolite Platinum spark plugs are crafted for superior performance and durability, making them ideal for older engine applications. Featuring a platinum center electrode firing tip, these spark plugs ensure quicker firing, smoother starts, and enhanced acceleration while boosting fuel efficiency. The platinum firing tip resists gap erosion, extending service life, while the high alumina ceramic insulator offers excellent thermal conductivity and insulation for added strength. A multi-rib insulator prevents flash-over, and the nickel-plated shell resists corrosion for long-lasting reliability. Designed with a flat gasket seat type, these spark plugs provide a secure seal for optimal engine performance. With a mid-projection standard center electrode and nickel ground electrode tip, they deliver consistent performance for demanding conditions. Perfect for performance-grade applications, these spark plugs combine advanced materials and engineering to ensure your engine runs smoothly and efficiently.
See More
NGK – NGK Iridium IX Spark Plug (LFR6AIX-11): Extreme Ignitability & Durability, 6619 (Part No.6619)
from
$17.99
NGK Iridium IX spark plugs are specifically designed for the performance enthusiast. Iridium IX provides outstanding acceleration, high fuel efficiency and durability. NGK Iridium IX plugs offer extreme ignitability and exceptional anti-fouling. Tapered cut ground electrode provides improved starting, idling and throttle response. The Iridium fine wire center electrode’s durability is six times harder than platinum. Iridium alloy’s extremely high melting point is perfect for today’s engines. For even greater performance consider upgrading to an NGK Ruthenium HX plug.
See More
Autolite Iridium – Autolite Iridium Iridium Ultra Fine wire Spark Plug: Optimal Performance & Durability, AI3923 (Part No.AI3923)
from
$11.49
Optimal Performance, Durability, Ignitability. The Autolite Iridium Ultra is an engineered OE replacement iridium spark plug featuring a laser-welded 0.5mm proprietary iridium alloy finewire center electrode that ensures optimal fuel efficiency, acceleration, and focused ignitability. Its nickel-plated shell resists corrosion, while the high-alumina ceramic insulator provides increased strength. Additionally, the proprietary platinum sidewire technology enhances durability and performance, making it a top choice for reliable ignition. It also features a resistor type and a flat seat type for added compatibility and performance.
See More
Bosch – Bosch Nickel Copper-Core Spark Plug: Enhanced Durability & Performance, 7402 (Part No.7402)
from
$4.19
BOSCH conventional Nickel-Copper Spark Plugs are designed to deliver performance and value. Heavy-duty yttrium-enhanced nickel center electrode with copper core provides a longer lasting copper core spark plug. Engineered to meet or exceed Original Equipment specifications for nickel-copper core spark plugs.
See More
Autolite – Autolite Racing Resistor Spark Plug: Enhanced Heat Transfer for Peak Performance, AR3924 (Part No.AR3924)
from
$5.99
The Racing Resistor Spark Plug is expertly crafted to deliver peak performance on the track, featuring a cut-back ground electrode for optimal ignitability and enhanced heat transfer, ensuring quicker starts and maximum engine efficiency. Its yttrium-enhanced alloy reduces ground wire temperature by up to 8%, making it ideal for colder heat ranges and performance modifications under intense conditions. The anti-corrosive nickel plating resists rust better than black oxide, maintaining durability and long-term reliability. Designed with a high alumina multi-rib ceramic insulator, it offers superior thermal conductivity and insulation, preventing flash-over while increasing strength. With a mid-projection center electrode and nickel-tipped materials for both the center and ground electrodes, this performance-grade spark plug is built to handle demanding environments. The flat seat design and integrated resistor further enhance its functionality, making it a dependable choice for racers seeking consistent ignition and durability.
See More
Autolite – Autolite Racing Resistor Spark Plug: Enhanced Heat Transfer for Peak Performance, AR3923 (Part No.AR3923)
from
$5.99
The Racing Resistor Spark Plug is expertly crafted to deliver peak performance on the track, featuring a cut-back ground electrode for optimal ignitability and superior heat transfer, ensuring quicker starts and maximum engine efficiency. Its yttrium-enhanced alloy reduces ground wire temperature by up to 8%, making it ideal for colder heat ranges and performance modifications under intense conditions. The anti-corrosive nickel plating resists rust better than black oxide, maintaining durability and long-term efficiency. Designed with a high alumina multi-rib ceramic insulator, it offers exceptional thermal conductivity and insulation, preventing flash-over while enhancing strength. With a mid-projection center electrode and nickel-tipped components, this performance-grade spark plug is built to handle the demands of racing environments, delivering reliability and value for enthusiasts seeking top-tier engine performance.
See More
Carquest Premium – Carquest Multi-Use Connector, ABA3459 (Part No.ABA3459)
from
$23.99
Modern vehicles may have 100 or more electrical harness connectors in every operating system of the vehicle. Terminal tension may weaken with time or corrosion may occur within the connector housing making replacement necessary. When replacing any harness-connector assembly approved wire termination methods must be followed to ensure a successful and long-term solution to the original problem is made. A failed terminal connection, terminal corrosion or damaged wire will result in an electrical system fault.
See More
Delphi – Delphi Ignition Coil, GN10328 (Part No.GN10328)
from
$58.99
Every single Delphi ignition coil is designed and endurance tested using high quality materials. This ensures fast starts, consistent engine performance and optimized fuel efficiency. We makes more than 10 million ignition coils for North America each year, and each one is engineered to OE design specifications for vehicles from Ford, Toyota, Nissan, Lexus, GM, Mazda, Chrysler, Subaru, Acura and more.
See More
Delphi – Delphi Ignition Coil, GN10571 (Part No.GN10571)
from
$73.99
Every single Delphi ignition coil is designed and endurance tested using high quality materials. This ensures fast starts, consistent engine performance and optimized fuel efficiency. We makes more than 10 million ignition coils for North America each year, and each one is engineered to OE design specifications for vehicles from Ford, Toyota, Nissan, Lexus, GM, Mazda, Chrysler, Subaru, Acura and more.
See More
Bosch – Bosch Ignition Coil: Meets Or Exceeds Original Equipment Specifications, 1 Piece, 0221504474 (Part No.0221504474)
from
$149.99
Benefits of Bosch original equipment quality ignitions coils include the right ignition voltage, long lasting spark, better engine running conditions, lower fuel consumption, and reduced exhaust emissions.
See More
aFe POWER – aFe POWER SCORCHER High-Performance Ignition Coil (6 Pack), 77-92001-MC (Part No.77-92001-MC)
from
$262.99
Smooth transitions in the mandrel-bent aluminum pipes decrease turbulence and minimize pressure loss, increasing horsepower and torque. This kit includes high-quality, stainless-steel, smartseal clamps and heavy-duty, 5-ply, polyester reinforced silicone couplings. This charge pipe kit also features factory style billet aluminum quick-connect adapters with O-ring seals to ensure a leak-free fit while maintaining superior strength and durability. Finished in wrinkle black powder coating with a unique laser-etched aFe POWER logo for a custom look.
See More
Bosch – Bosch Ignition Coil: Meets or Exceeds Original Equipment Specifications, 1 Piece, 1227030081 (Part No.1227030081)
from
$83.99
Benefits of Bosch original equipment quality ignitions coils include the right ignition voltage, long lasting spark, better engine running conditions, lower fuel consumption, and reduced exhaust emissions.
See More
NGK – NGK Premium COP Pencil Type Ignition Coil: Meets or Exceeds OE Specifications, 48705 (Part No.48705)
from
$64.99
NGK ignition coils are manufactured to meet or exceed OE standards for the highest durability and operational performance, so they can be installed with confidence. NGK and their family of automotive products have over 80 years’ experience and are driven by extreme dedication to innovation, performance and quality. With state-of-the-art manufacturing, inventory and distribution facilities in North America and globally, NGK is dedicated to providing customers with world-class products and services. Developed and rigorously tested in our ISO 17025 accredited test lab under the most extreme conditions, NGK’s coil designs will outperform all others – far beyond operational environments a vehicle would actually experience. NGK ignition coils have vast coverage including late-model domestic and import vehicles. NGK’s OE legacy, unsurpassed quality and leading vehicles in operation coverage reinforces NGK as The Ignition Specialist.
See More
Sylvania – Sylvania 2721 Long Life: Mini Bulb, Standard Performance, 2 Pack, 2721LLBP2 (Part No.2721LLBP2)
from
$8.99
SYLVANIA Long Life miniature bulbs provide standard performance for your car or truck’s interior and exterior auxiliary lighting. Ideal for use in your car’s back up/reverse, trunk, dome lights and more, Long Life bulbs are a direct replacement for your vehicle. Designed for durability, lower maintenance, and safety in mind.
See More
Carquest Premium – Carquest Ignition Switch, CSA1985 (Part No.CSA1985)
from
$188.99
Carquest Premium Vehicle Solutions provides high-quality solutions for a wide range of applications. The Ignition Switch allows for reliable control of the vehicle’s electrical systems and engine start-up, enhancing convenience and ensuring consistent performance during operation. Engineered for maximum performance and durability, our products are built to excel in even the most demanding conditions, ensuring reliable operation and long-lasting value.
See More
Carquest Premium – Carquest Ignition Switch, CSA3195 (Part No.CSA3195)
from
$196.99
Carquest Premium Vehicle Solutions provides high-quality solutions for a wide range of applications. The Ignition Switch allows for reliable control of the vehicle’s electrical systems and engine start-up, enhancing convenience and ensuring consistent performance during operation. Engineered for maximum performance and durability, our products are built to excel in even the most demanding conditions, ensuring reliable operation and long-lasting value.
See More
URO Parts – URO Parts Ignition Switch, 61326901961 (Part No.61326901961)
from
$41.99
For European vehicles, A.P.A. manufactures the URO Parts brand of quality replacement parts, which meet or exceed OEM specifications. URO Parts components are ideal for both professional and DIY vehicle repair, and are often the exclusive aftermarket alternative to overpriced €œGenuine€ components. By reducing deferred maintenance with URO Parts, you will increase the bottom line of your business. With its URO Premium line, A.P.A. offers problem-solving upgraded components that are superior to failure-prone OEM parts in design and/or materials. A.P.A. is so confident in the longevity and reliability of URO Premium products, they’re covered by an unlimited mileage, . URO Parts also specializes in accurate reproduction parts for classic vehicles, including a huge variety of items that are no longer available from the dealer.
See More
Carquest Premium – Carquest Ignition Switch, CSC1516 (Part No.CSC1516)
from
$91.99
Carquest Premium Vehicle Solutions provides high-quality solutions for a wide range of applications. The Ignition Switch allows for reliable control of the vehicle’s electrical systems and engine start-up, enhancing convenience and ensuring consistent performance during operation. Engineered for maximum performance and durability, our products are built to excel in even the most demanding conditions, ensuring reliable operation and long-lasting value.
See More
Carquest Premium – Carquest Ignition Switch, CSA3194 (Part No.CSA3194)
from
$194.99
Carquest Premium Vehicle Solutions provides high-quality solutions for a wide range of applications. The Ignition Switch allows for reliable control of the vehicle’s electrical systems and engine start-up, enhancing convenience and ensuring consistent performance during operation. Engineered for maximum performance and durability, our products are built to excel in even the most demanding conditions, ensuring reliable operation and long-lasting value.
See More
Upgrade your 2003 BMW 525i with Top-Quality Ignition and Tune-Up Products
When it comes to maintaining or upgrading your 2003 BMW 525i, nothing is more important than using high-quality OEM or aftermarket parts that you can trust. Whether you’re repairing damage to your BMW or enhancing its overall performance, Ignition and Tune-Up Products are key to keeping your 525i functioning at its best. At Advance Auto Parts, we offer a wide selection of 42 Ignition and Tune-Up Products for the 2003 BMW 525i, designed to meet your needs without breaking the bank.
From
Ignition Sensor
replacements to
Ignition Coils and Boots
upgrades, we’ve got you covered with parts that fit your vehicle perfectly and ensure long-lasting performance.
Affordable Prices and Wide Selection
Shopping for Ignition and Tune-Up Products for any vehicle can be a hassle, especially if you’re on a budget. But with Advance Auto Parts, you can find high-quality Ignition and Tune-Up Products for your 2003 BMW 525i at great prices.
Our Ignition and Tune-Up Products inventory for this model
ranges from just $3.99 to $262.99, with
an average price of $35.49.
Our 42 Ignition and Tune-Up Products in stock come from 14 trusted brands, so you’re sure to find the right part for your 2003 BMW 525i without overspending.
Top Brands and High Customer Satisfaction
Advance Auto Parts takes pride in offering only the best brands in the automotive industry. For your 2003 BMW 525i, we stock popular OEM and aftermarket Ignition and Tune-Up Products from top names
like NGK, Autolite, DENSO, and more.
NGK Ignition and Tune-Up Products
start at just $6.99 and boast an impressive 4.8 stars average rating from customers.
Autolite and DENSO also bring quality to the table, with Ignition and Tune-Up Products available starting at $5.49, and at an average 4.6 stars rating.
With 2,750 customer reviews and counting, our 2003 BMW 525i Ignition and Tune-Up Products have a strong track record of reliability, ensuring you can trust your purchase.
Explore Related Parts and More
While you’re here, don’t forget to check out other essential categories that go hand in hand with Ignition and Tune-Up Product upgrades. Explore related part types like Batteries and Chargers, Oil and Lubricants
and more to make sure your 2003 BMW 525i is always ready to roll. We’re committed to providing you with everything you need to keep your 525i in top shape, all in one place.
Start shopping confidently below for your 2003 BMW 525i!
Best-Selling Ignition Sensors for 2003 BMW 525is
Enhance the driving experience in your BMW with 1 quality Ignition Sensor components, starting at $83.99.
Carquest Premium – Carquest Knock Sensor, SBC4019 (Part No.SBC4019)
from
$83.99
Carquest Knock Sensors respond to a wide range of engine knock frequencies providing accurate engine condition to the ECM for optimal ignition timing. Highest quality piezoceramic element manufactured to tight tolerances for increased durability. All Carquest Knock Sensors are designed to meet or exceed OEM specifications at our ISO TS16949 manufacturing facilities.
See More
Most Popular 2003 BMW 525i Ignition Coils and Boots
Customize your BMW with 11 Ignition Coils and Boots products
like Ignition Coils and
Ignition Coil Connectors, all
priced under $262.99.
Delphi – Delphi Ignition Coil, GN10571 (Part No.GN10571)
from
$73.99
Every single Delphi ignition coil is designed and endurance tested using high quality materials. This ensures fast starts, consistent engine performance and optimized fuel efficiency. We makes more than 10 million ignition coils for North America each year, and each one is engineered to OE design specifications for vehicles from Ford, Toyota, Nissan, Lexus, GM, Mazda, Chrysler, Subaru, Acura and more.
See More
Delphi – Delphi Ignition Coil, GN10328 (Part No.GN10328)
from
$58.99
Every single Delphi ignition coil is designed and endurance tested using high quality materials. This ensures fast starts, consistent engine performance and optimized fuel efficiency. We makes more than 10 million ignition coils for North America each year, and each one is engineered to OE design specifications for vehicles from Ford, Toyota, Nissan, Lexus, GM, Mazda, Chrysler, Subaru, Acura and more.
See More
Carquest Premium – Carquest Ignition Coil, EBC1006 (Part No.EBC1006)
from
$54.99
Carquest Premium ignition coils meet or exceed original equipment (OE) specifications and are developed by top OE/OES manufacturers to ensure superior performance. All of our Carquest Premium ignition coils are developed by IATF 16949 certified manufacturers for consistent durability and long-lasting performance. These ignition coils use high-quality components and will utilize optimized designs on applications where the OE ignition coil had frequent failures. We require stringent testing standards to ensure proper fit and performance for each application and stand behind our Carquest Premium ignition coils with an industry-leading warranty. Carquest Premium ignition coils are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered and tested by world-class manufacturers to ensure a reliable and long-lasting repair.
See More
Carquest – Carquest Ignition Coil: Meets OE Specifications, 1 Count, 26C1016 (Part No.26C1016)
from
$56.99
Carquest ignition coils meet original equipment (OE) fit, form and function and are built to ensure reliable starting and performance. Carquest ignition coils are tested to ensure proper spark and perfect fit for each application. These ignition coils are an affordable repair choice to restore the vehicle’s ignition system performance. Carquest ignition coils are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered and tested by world-class manufacturers to ensure a reliable and long-lasting repair.
See More
NGK – NGK Premium COP Pencil Type Ignition Coil: Meets or Exceeds OE Specifications, 48705 (Part No.48705)
from
$64.99
NGK ignition coils are manufactured to meet or exceed OE standards for the highest durability and operational performance, so they can be installed with confidence. NGK and their family of automotive products have over 80 years’ experience and are driven by extreme dedication to innovation, performance and quality. With state-of-the-art manufacturing, inventory and distribution facilities in North America and globally, NGK is dedicated to providing customers with world-class products and services. Developed and rigorously tested in our ISO 17025 accredited test lab under the most extreme conditions, NGK’s coil designs will outperform all others – far beyond operational environments a vehicle would actually experience. NGK ignition coils have vast coverage including late-model domestic and import vehicles. NGK’s OE legacy, unsurpassed quality and leading vehicles in operation coverage reinforces NGK as The Ignition Specialist.
See More
Carquest Premium – Carquest Multi-Use Connector, ABA3459 (Part No.ABA3459)
from
$23.99
Modern vehicles may have 100 or more electrical harness connectors in every operating system of the vehicle. Terminal tension may weaken with time or corrosion may occur within the connector housing making replacement necessary. When replacing any harness-connector assembly approved wire termination methods must be followed to ensure a successful and long-term solution to the original problem is made. A failed terminal connection, terminal corrosion or damaged wire will result in an electrical system fault.
See More
aFe POWER – aFe POWER SCORCHER High-Performance Ignition Coil (6 Pack), 77-92001-MC (Part No.77-92001-MC)
from
$262.99
Smooth transitions in the mandrel-bent aluminum pipes decrease turbulence and minimize pressure loss, increasing horsepower and torque. This kit includes high-quality, stainless-steel, smartseal clamps and heavy-duty, 5-ply, polyester reinforced silicone couplings. This charge pipe kit also features factory style billet aluminum quick-connect adapters with O-ring seals to ensure a leak-free fit while maintaining superior strength and durability. Finished in wrinkle black powder coating with a unique laser-etched aFe POWER logo for a custom look.
See More
Carquest Premium – Carquest Ignition Coil: Meets or Exceeds OE Specifications, 6 Count, EBC1006-6 (Part No.EBC1006-6)
from
$262.99
Carquest Premium ignition coils meet or exceed original equipment (OE) specifications and are developed by top OE/OES manufacturers to ensure superior performance. All of our Carquest Premium ignition coils are developed by IATF 16949 certified manufacturers for consistent durability and long-lasting performance. These ignition coils use high-quality components and will utilize optimized designs on applications where the OE ignition coil had frequent failures. We require stringent testing standards to ensure proper fit and performance for each application and stand behind our Carquest Premium ignition coils with an industry-leading warranty. Carquest Premium ignition coils are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered and tested by world-class manufacturers to ensure a reliable and long-lasting repair.
See More
aFe POWER – aFe POWER SCORCHER High-Performance Ignition Coil, 77-92001 (Part No.77-92001)
from
$52.99
Smooth transitions in the mandrel-bent aluminum pipes decrease turbulence and minimize pressure loss, increasing horsepower and torque. This charge pipe kit provides a smooth transition between the turbo and the engine for lower operating temperatures and increased power. This kit includes high-quality, stainless-steel, smartseal clamps and heavy-duty, 5-ply, polyester reinforced silicone couplings. This charge pipe kit also features factory style billet aluminum quick-connect adapters with O-ring seals to ensure a leak-free fit while maintaining superior strength and durability. Finished in textured red powder coating with a unique laser-etched aFe POWER logo for a custom look.
See More
Delphi – Delphi Ignition Coil, GN10572 (Part No.GN10572)
from
$39.99
Every single Delphi ignition coil is designed and endurance tested using high quality materials. This ensures fast starts, consistent engine performance and optimized fuel efficiency. We makes more than 10 million ignition coils for North America each year, and each one is engineered to OE design specifications for vehicles from Ford, Toyota, Nissan, Lexus, GM, Mazda, Chrysler, Subaru, Acura and more.
See More
DENSO – DENSO Direct Ignition Coil, 673-9330 (Part No.673-9330)
from
$34.99
As the innovator and leader in stick coil technology DENSO has conducted superior testing and inspection processes to insure the highest quality ignition coil. Don’t be fooled by imitations – look for the DENSO name to be sure you’re getting the best.
See More
Top Picks for 2003 BMW 525i Ignition Switches
Upgrade BMW 525is with top-quality Ignition Switches parts, including 3 OEM and aftermarket selections for your 2003 model.
Sylvania – Sylvania 2721 Long Life: Mini Bulb, Standard Performance, 2 Pack, 2721LLBP2 (Part No.2721LLBP2)
from
$8.99
SYLVANIA Long Life miniature bulbs provide standard performance for your car or truck’s interior and exterior auxiliary lighting. Ideal for use in your car’s back up/reverse, trunk, dome lights and more, Long Life bulbs are a direct replacement for your vehicle. Designed for durability, lower maintenance, and safety in mind.
See More
Carquest Premium – Carquest Ignition Switch, CSC1516 (Part No.CSC1516)
from
$91.99
Carquest Premium Vehicle Solutions provides high-quality solutions for a wide range of applications. The Ignition Switch allows for reliable control of the vehicle’s electrical systems and engine start-up, enhancing convenience and ensuring consistent performance during operation. Engineered for maximum performance and durability, our products are built to excel in even the most demanding conditions, ensuring reliable operation and long-lasting value.
See More
URO Parts – URO Parts Ignition Switch, 61326901961 (Part No.61326901961)
from
$41.99
For European vehicles, A.P.A. manufactures the URO Parts brand of quality replacement parts, which meet or exceed OEM specifications. URO Parts components are ideal for both professional and DIY vehicle repair, and are often the exclusive aftermarket alternative to overpriced €œGenuine€ components. By reducing deferred maintenance with URO Parts, you will increase the bottom line of your business. With its URO Premium line, A.P.A. offers problem-solving upgraded components that are superior to failure-prone OEM parts in design and/or materials. A.P.A. is so confident in the longevity and reliability of URO Premium products, they’re covered by an unlimited mileage, . URO Parts also specializes in accurate reproduction parts for classic vehicles, including a huge variety of items that are no longer available from the dealer.
See More
In-Demand Spark Plugs for 2003 BMW 525is
Select from 27 premium Spark Plugs parts for your 2003 BMW 525i, with prices ranging from $3.99 to $18.49.
NGK – NGK G-Power Platinum Spark Plug (BKR6EGP): Enhanced Durability & Efficiency, 7092 (Part No.7092)
from
$8.99
NGK G-Power Platinum spark plugs are the best single platinum spark plugs at an economical price. G-Power plugs feature a fine wire platinum center electrode and a trapezoidal cut ground electrode that offers increased durability, improved fuel efficiency, lower emissions, faster starts and quicker acceleration over conventional nickel spark plugs. An excellent upgrade for vehicles which used nickel alloy spark plugs originally. For better performance consider upgrading to a NGK Iridium IX plug. For even greater performance consider upgrading to a NGK RUTHENIUM HX plug.
See More
Autolite – Autolite Platinum Spark Plug (AP3924): Improved Performance & Durability (Part No.AP3924)
from
$5.49
The Autolite Platinum spark plug is a high-performance solution designed to enhance your engine’s efficiency and longevity. Featuring a platinum center electrode firing tip, it ensures quicker firing, smoother starts, and improved fuel efficiency while resisting gap erosion for an extended service life. Its high alumina ceramic insulator provides excellent thermal conductivity and superior insulation, boosting overall strength and reliability. The multi-rib insulator design prevents flash-over, while the nickel-plated shell offers exceptional corrosion resistance, ensuring durability even in demanding conditions. With a mid-projection standard center electrode and a flat seat type, this spark plug is tailored for optimal performance in older engine designs. The combination of a platinum tip and nickel ground electrode makes it a dependable choice for those seeking enhanced acceleration and long-lasting performance. Whether you’re maintaining or upgrading, this performance-grade spark plug delivers exceptional value and reliability.
See More
NGK – NGK V-Power Nickel Spark Plug (BKR6E): Reliable Performance & Ignitability, 6962 (Part No.6962)
from
$6.99
NGK V-Power spark plugs offer reliable performance and improved ignitability over standard nickel plugs. Engineered specifically for OE applications, the special V-cut nickel alloy center electrode and concave ground electrode of NGK’s V-Power spark plug increases ignitability providing quicker starts and smoother idle. NGK’s legendary high grade alumina silicate ceramic creates a stronger insulator for optimal dielectric performance. Trivalent metal plating ensures superior anti-corrosion and anti-seizing properties.
See More
NGK – NGK Laser Platinum Spark Plug (BKR6EQUP): High Ignitability & Longevity, 3199 (Part No.3199)
from
$17.99
NGK Laser Platinum spark plugs provide high ignitability and longer service life compared to conventional nickel spark plugs. Laser Platinum plugs are tested to the highest standards to ensure quality and durability. Engineered specifically for OE applications. Laser platinum plugs provide stable idling, superior anti-fouling, improved fuel efficiency and lower emissions. High-grade pure alumina ceramic and 98% pure copper core prevents spark plug from overheating and provides reliable starts. Most Laser Platinum spark plugs feature a platinum pad on the ground electrode for even wear in distributorless ignition systems.
See More
Autolite – Autolite Double Platinum Spark Plug: Enhanced Durability & Performance, APP3924 (Part No.APP3924)
from
$7.49
Double Platinum Spark Plug offers enhanced durability and performance with its platinum-to-platinum design, effectively reducing gap erosion and minimizing misfires for a longer service life. Engineered for distributor-less ignition system (DIS) engines, it outperforms copper and standard platinum plugs. The yttrium-enhanced ground electrode ensures superior heat transfer, maintaining durability under high temperatures and pressure. Its high alumina ceramic insulator optimizes thermal conductivity and dielectric strength, while the multi-rib insulator prevents flash-over for reliable operation. Featuring a mid-projection center electrode and flat seat type, this performance-grade spark plug is built with platinum-tipped electrodes for consistent ignition and lasting reliability. Designed to deliver exceptional value, it is a dependable choice for those seeking improved engine efficiency and longevity.
See More
NGK – NGK Iridium IX Spark Plug (BKR6EIX): Enhanced Ignitability & Durability, 6418 (Part No.6418)
from
$16.99
NGK Iridium IX spark plugs are specifically designed for the performance enthusiast. Iridium IX provides outstanding acceleration, high fuel efficiency and durability. NGK Iridium IX plugs offer extreme ignitability and exceptional anti-fouling. Tapered cut ground electrode provides improved starting, idling and throttle response. The Iridium fine wire center electrode’s durability is six times harder than platinum. Iridium alloy’s extremely high melting point is perfect for today’s engines. For even greater performance consider upgrading to an NGK Ruthenium HX plug.
See More
DENSO – DENSO Iridium Power Spark Plug: Maximum Spark Energy, 0.4mm Iridium Tip, IK20, 5304 (Part No.5304)
Champion – Champion Double Platinum Power Spark Plug RC10PLPB4 – Enhanced Durability & Performance, 7436 (Part No.7436)
from
$9.99
Champion Double Platinum Power spark plugs combine a platinum fine-wire center electrode with platinum center and ground electrodes and exclusive Heat-Active alloy, ensuring powerful performance, longer service life and precise spark focus for optimal combustion. Champion your engine with spark plugs engineered to improve efficiency and keep your vehicle running at its best.
See More
NGK – NGK Ruthenium HX Spark Plug (FR6AHX-S): High Ignitability & Durability, 94279 (Part No.94279)
from
$18.49
NGK Ruthenium HX High Ignitability spark plugs are the best in class plug for todays modern vehicles. Patented Ruthenium technology offers the most advance tip technology and delivers the highest performance and life expectancy. Created from advanced OE technology as a high ignitability plug, Ruthenium HX spark plugs come with patented, specialized OEM DFE and PSPE tip designs. NGK Ruthenium HX High Ignitability spark plugs provide a more complete fuel burn resulting in a quicker throttle response, smoother idle and better cold starts. Ruthenium center electrode provides industry leading durability.
See More
ACDelco – ACDelco Double Platinum Spark Plug, 41-801 (Part No.41-801)
from
$11.49
ACDelco Gold (Professional) Double Platinum Spark Plug are a high quality alternative to Original Equipment (OE) parts. With a copper core and double platinum pads on the center electrode, these plugs are designed to deliver long-lasting performance. These premium aftermarket replacement spark plugs are manufactured to meet your expectations for fit, form, and function. ACDelco Gold (Professional) parts are manufactured to meet your expectations for fit, form, and function, making them a smart choice for General Motors vehicles, as well as most makes and models, including special applications. These high-quality parts are backed by General Motors. Some ACDelco Gold parts may have formerly appeared as ACDelco Professional.
See More
NGK – NGK Standard Nickel Spark Plug (BKR6EKUB): Reliable OE Performance, 7969 (Part No.7969)
from
$13.99
NGK Standard spark plugs (in the iconic NGK ‘yellow box’ packaging) are a proven OE cornerstone and technology customers have relied on for decades. Engineered specifically for OE applications, NGK Standard spark plugs provide OE quality nickel alloy reliable performance and design. NGK’s legendary high grade alumina silicate ceramic creates a stronger insulator for optimal dielectric performance, while triple gasket sealing prevents combustion gas leakage. Solid 98% pure copper core offers superior heat dissipation, conductivity and ultra wide heat ranges. Trivalent metal plating ensures superior anti-corrosion and anti-seizing properties.
See More
Motorcraft – Motorcraft Double Platinum Spark Plug: Enhanced Durability & Reliability, SP-485 (Part No.SP-485)
from
$4.79
Double Platinum Spark Plug by Motorcraft is engineered to deliver exceptional durability and reliability, making it the ideal choice for Ford, Lincoln, and Mercury vehicles. Designed with platinum center and ground electrode tips, these spark plugs resist oxidation and arc erosion, ensuring long-lasting performance. The multi-rib insulator minimizes misfires, while the gasket seat type guarantees a precise fit. With service intervals of up to 100,000 miles, these spark plugs optimize emissions, reduce fuel consumption, and eliminate misfires, providing a smoother driving experience. Backed by Motorcraft’s Service Parts Warranty, they are crafted from high-quality materials to meet strict Ford engineering standards, offering original equipment performance for a wide range of domestic and import cars and trucks. Motorcraft ignition components also help prevent false check engine lights, giving you confidence in your vehicle’s reliability. These spark plugs are what your vehicle was equipped with at the factory, ensuring compatibility and peace of mind.
See More
DENSO – DENSO Iridium TT Spark Plug: Ultimate Endurance and Power, 0.4mm Iridium Tip, IK20TT, 4702 (Part No.4702)
from
$14.99
Durability of an OE style plug combined with Power & Torque of high performance.
See More
Autolite – Autolite Copper Resistor Spark Plug: Quick Starts & Enhanced Durability, 3924 (Part No.3924)
from
$5.49
Autolite Copper spark plugs are crafted to ensure reliable performance and durability for your vehicle or application. Featuring a copper core center electrode, these spark plugs excel in thermal control and resist fouling, ensuring consistent operation. The high nickel alloy center and ground electrodes are designed for extended life, while the mid-projection center electrode enhances ignition efficiency. Built with a high alumina multi-rib ceramic insulator, these plugs offer superior thermal conductivity and insulation, boosting strength and reliability. The nickel-plated shell provides exceptional corrosion resistance, making them ideal for long-term use. With a flat seat type and integrated resistor, these spark plugs deliver quick starts and meet performance expectations, offering great value for regular-grade applications.
See More
Autolite – Autolite Racing Resistor Spark Plug: Enhanced Heat Transfer for Peak Performance, AR3924 (Part No.AR3924)
from
$5.99
The Racing Resistor Spark Plug is expertly crafted to deliver peak performance on the track, featuring a cut-back ground electrode for optimal ignitability and enhanced heat transfer, ensuring quicker starts and maximum engine efficiency. Its yttrium-enhanced alloy reduces ground wire temperature by up to 8%, making it ideal for colder heat ranges and performance modifications under intense conditions. The anti-corrosive nickel plating resists rust better than black oxide, maintaining durability and long-term reliability. Designed with a high alumina multi-rib ceramic insulator, it offers superior thermal conductivity and insulation, preventing flash-over while increasing strength. With a mid-projection center electrode and nickel-tipped materials for both the center and ground electrodes, this performance-grade spark plug is built to handle demanding environments. The flat seat design and integrated resistor further enhance its functionality, making it a dependable choice for racers seeking consistent ignition and durability.
See More
DENSO – DENSO Double Platinum Spark Plug: OE Performance, lasts 60K+ Miles, PK20TR11, 3253 (Part No.3253)
from
$14.99
Manufactured to the strictest OE performance, durability and emissions standards.
See More
Motorcraft – Motorcraft Platinum Spark Plug: Enhances Durability & Reduces Fuel Consumption, SP-497 (Part No.SP-497)
from
$7.79
Motorcraft Spark Plugs are original equipment on Ford Motor Company vehicles, engineered to meet strict Ford engineering standards for performance and reliability. These spark plugs are matched to specific engines to provide enhanced durability, eliminate misfires, reduce fuel consumption, and optimize emissions. With a platinum center and ground electrode tip, they are resistant to oxidation and arc erosion, ensuring long-lasting performance. The multi-rib insulator protects against misfires, and they are backed by Motorcraft’s Service Parts Warranty. Designed for exact fit in Ford, Lincoln, and Mercury vehicles, these spark plugs also help prevent false check engine lights and offer service intervals of up to 100,000 miles. Crafted with high-quality materials, Motorcraft Spark Plugs deliver reliable performance for a broad range of applications, including domestic and import cars and trucks of all makes and sizes.
See More
DENSO – DENSO Platinum TT Spark Plug with Twin-Tip Design for Enhanced Ignition, 4504 (Part No.4504)
from
$3.99
The Platinum TT Spark Plug with its advanced twin-tip design ensures faster flame propagation for more complete combustion, enhancing ignition performance and efficiency. Featuring a platinum center electrode, it delivers excellent conductivity and durability, while the titanium-enhanced ground strap ensures superior performance and extended lifespan. The flat seat type provides a secure fit, making it compatible with a variety of vehicles. Designed for reliability and longevity, this spark plug is a dependable choice for maintaining consistent engine performance. Its high-quality materials and innovative design make it a valuable addition to your vehicle’s ignition system.
See More
E3 – E3 DiamondFIRE Automotive Spark Plug: More Power & Fuel Efficiency, E3.64 (Part No.E3.64)
from
$8.49
“The Premium DiamondFire Automotive Spark Plug is engineered to deliver peak performance and efficiency for your vehicle. Featuring E3’s patented Diamond Fire edge-to-edge ground electrode, it ensures a faster, more complete burn for smoother acceleration and idle. The innovative “”diamond-shaped”” side wire electrode enhances combustion by quickly igniting the air/fuel mixture, resulting in a larger and faster flame kernel. This translates to improved power output by up to 6% on average and significant fuel savings, while also reducing engine carbon deposits for a cleaner burn. Constructed with durable nickel for both the center and ground electrode tips, this spark plug is built to last. Its gasket seat type ensures a secure fit, and the pre-gapped design eliminates the need for adjustments, making installation hassle-free. Upgrade to this advanced spark plug for enhanced engine performance, better fuel efficiency, and a cleaner, more reliable ride.”
See More
DENSO – DENSO U-Groove Spark Plug: OE Performance, K20TXR, 5063 (Part No.5063)
from
$7.99
The U-Groove Spark Plug is engineered with an OEM-specified special ground electrode configuration, ensuring optimal performance and reliability for a wide range of applications, including classic and collector cars. Its precision machine-rolled threads minimize the risk of seizing or cross-threading in delicate aluminum heads, making installation smooth and hassle-free. Built to last, this spark plug outperforms conventional plugs by offering twice the lifespan, delivering over 30,000 miles of dependable operation. Crafted with a nickel center electrode tip and featuring a flat seat type, it guarantees consistent ignition and efficient combustion. Each plug is 100 percent pre-fired to ensure reliable functionality right out of the box. With its U-Groove design, this spark plug provides enhanced durability and compatibility, making it a valuable upgrade for maintaining peak engine performance.
See More
Autolite Iridium – Autolite Iridium Iridium XP Fine wire Spark Plug: Improved Durability, More Focused Ignition, XP3924 (Part No.XP3924)
from
$11.49
Autolite has over 100 years of engineering experience and has sold over 11 billion plugs. Designed and engineered in the USA, the Autolite Iridium XP spark plugs feature an iridium-enhanced 0.6mm finewire design and patented platinum sidewire technology to provide better overall durability and a more focused ignition for enhanced ignitability and performance. Features double Iridium-enhanced alloy technology center electrode for improved durability and wear resistance.
See More
ACDelco – ACDelco Conventional Spark Plug, 41-629 (Part No.41-629)
from
$6.49
ACDelco GM Original Equipment Conventional Spark Plugs are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These Conventional Spark Plugs are designed for reliability and efficient performance, and are a high quality replacement for many vehicles on the road today. Their high-quality copper cores and outstanding suppression characteristics deliver reliable performance. They are also available for Marine applications. These premium aftermarket replacement spark plugs are manufactured to meet your expectations for fit, form, and function. ACDelco GM Original Equipment parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some ACDelco GM Original Equipment parts may have formerly appeared as GM Genuine Parts (OE) or ACDelco Professional.
See More
ACDelco – ACDelco RAPIDFIRE Spark Plug: Enhanced Durability & Performance, 19 (Part No.19)
from
$7.99
ACDelco Gold (Professional) RAPIDFIRE Spark Plugs are a high quality alternative to Original Equipment (OE) parts. These RAPIDFIRE Single Platinum Performance Spark Plugs are designed for everyday use and are a high quality replacement for many vehicles on the road today. These premium aftermarket spark plugs have high-quality suppressors that help prevent misfiring, an improved plug to boot seal, and a pure copper core for greater durability. These premium aftermarket replacement spark plugs are manufactured to meet your expectations for fit, form, and function. ACDelco Gold (Professional) parts are manufactured to meet your expectations for fit, form, and function, making them a smart choice for General Motors vehicles, as well as most makes and models, including special applications. These high-quality parts are backed by General Motors. Some ACDelco Gold parts may have formerly appeared as ACDelco Professional.
See More
DENSO – DENSO Iridium Long-Life Spark Plug: OE Performance, SK20BR11, 3471 (Part No.3471)
from
$17.99
Engineered to meet the highest OE performance, durability, and emissions standards, this Iridium Long-Life Spark Plug is a powerhouse of innovation and reliability. Featuring DENSO’s patented Iridium Alloy with a 90% Iridium fine wire center electrode, it delivers sustained spark performance for over 100,000 miles, lasting up to three times longer than conventional plugs. The platinum ground electrode ensures extended life, while the 360-degree laser welding process guarantees a superior bond and structural integrity. Designed to endure extreme temperatures exceeding 4,000 Deg F, it is ideal for high-performance ignition systems and special fuel setups. With a flat seat type and cutting-edge technology, this spark plug offers exceptional value, ensuring optimal engine performance and long-lasting durability.
See More
Top-Rated Ignition and Tune-Up Products Brands For Your 2003 BMW 525i
Shop for the best-rated brands offering Ignition and Tune-Up Products and other products for your 2003 BMW 525is. Below you’ll find some of our best rated Ignition and Tune-Up Products from NGK, Autolite, and DENSO, and more. Ignition and Tune-Up Products from these brands that fit a 2003 525i start at just $5.49 and are rated as high as 4.8 stars. OEM and aftermarket Ignition and Tune-Up Products don’t get more top quality, durable, and affordable than from the brands below.
Popular NGK 2003 BMW 525i Ignition and Tune-Up Products
When it comes to maintaining or upgrading your 2003 BMW 525i, using quality Ignition and Tune-Up Products is essential to ensure durability and a perfect fit. NGK ticks all of those boxes. We offer a wide selection of NGK Ignition and Tune-Up Products, specifically designed for the 2003 BMW 525i. With over 3 NGK brand Ignition and Tune-Up Products in stock, you’re sure to find what you need. The prices for these top-notch parts start as low as $6.99, with an average price of just $11.32. Plus, with over 392 customer reviews and an average rating of 4.8 stars, you can trust that our NGK Ignition and Tune-Up Products will get the job done right. Choose Advance Auto Parts for reliability, quality, and expert-approved parts that keep your vehicle running strong.
from
$6.99
(85)
NGK V-Power Nickel Spark Plug (BKR6E): Reliable Performance & Ignitability, 6962
“Good value”
from
$17.99
(155)
NGK Laser Platinum Spark Plug (BKR6EQUP): High Ignitability & Longevity, 3199
“Engine idles smoother”
from
$8.99
(152)
NGK G-Power Platinum Spark Plug (BKR6EGP): Enhanced Durability & Efficiency, 7092
“Charges and Performs Great !”
Popular Autolite 2003 BMW 525i Ignition and Tune-Up Products
Autolite auto parts is one of the highest quality Ignition and Tune-Up Product brands in the market. Any 2003 BMW 525i owner should feel confident when installing genuine Autolite parts in their vehicle. To ensure the best fit and performance for your 2003 525i, Advance Auto Parts carries a full inventory of 3 Autolite Ignition and Tune-Up Products. Plus you will be keeping your BMW in peak condition while saving money because prices on these Autolite Ignition and Tune-Up Products range from $5.49 to $7.49, plus, with more than 247 customer reviews and an impressive 4.6 stars average rating, you can be confident the Fram Ignition and Tune-Up Products below will deliver on both quality and value.
from
$5.49
(49)
Autolite Copper Resistor Spark Plug: Quick Starts & Enhanced Durability, 3924
“Easy to install”
from
$7.49
(72)
Autolite Double Platinum Spark Plug: Enhanced Durability & Performance, APP3924
“Plugs worked great!!”
FAQs for 2003 BMW 525i Ignition and Tune-Up Products
Which Ignition and Tune-Up Products are best-sellers for 2003 BMW 525is?
Out of 42 Ignition and Tune-Up Products that fit 2003 BMW 525is, the following parts are the top sellers:
- DENSO Iridium TT Spark Plug: Ultimate Endurance and Power, 0.4mm Iridium Tip, IK20TT, 4702 (10713003) – $14.99
- Autolite Iridium Iridium XP Fine wire Spark Plug: Improved Durability, More Focused Ignition, XP3924 (15650193) – $11.49
- Autolite Platinum Spark Plug (AP3924): Improved Performance & Durability (5394082) – $5.49
What’s the price range for 2003 BMW 525i Ignition and Tune-Up Products?
Ignition and Tune-Up Product prices for the 2003 BMW 525i start at $3.99 and go up to $262.99 for the most premium parts.
What’s the average price of a Ignition and Tune-Up Product for a 2003 BMW 525i?
The average price for Ignition and Tune-Up Products for the 2003 BMW 525i is $35.49. Keep in mind the variety of part types within our Ignition and Tune-Up Product category so you are likely to find a wide range of prices across a variety of parts and components.
Does Advance Auto Parts sell Ignition and Tune-Up Products for other BMW 525i model years?
What are the cheapest Ignition and Tune-Up Products for my 2003 BMW 525i?
The cheapest 2003 BMW 525i Ignition and Tune-Up Products we carry in stock are:
- DENSO Platinum TT Spark Plug with Twin-Tip Design for Enhanced Ignition, 4504 (11010036) – $3.99
- Motorcraft Double Platinum Spark Plug: Enhanced Durability & Reliability, SP-485 (15650260) – $4.79
- Autolite Platinum Spark Plug (AP3924): Improved Performance & Durability (5394082) – $5.49
- Autolite Copper Resistor Spark Plug: Quick Starts & Enhanced Durability, 3924 (5390710) – $5.49
- Autolite Racing Resistor Spark Plug: Enhanced Heat Transfer for Peak Performance, AR3924 (15650020) – $5.99
What are the top-rated Ignition and Tune-Up Products that fit the 2003 BMW 525i?
Out of 2,750 reviews by customers, our 2003 BMW 525i Ignition and Tune-Up Products have an average customer rating of . These are some of the highest-rated Ignition and Tune-Up Product types for the 2003 BMW 525i and their top-rated products:
- Ignition Switches
- Sylvania 2721 Long Life: Mini Bulb, Standard Performance, 2 Pack, 2721LLBP2 (99997887) – $8.99
- Spark Plugs
- Sylvania 2721 Long Life: Mini Bulb, Standard Performance, 2 Pack, 2721LLBP2 (99997887) – $8.99
- Ignition Coils and Boots
- Sylvania 2721 Long Life: Mini Bulb, Standard Performance, 2 Pack, 2721LLBP2 (99997887) – $8.99
What types of Ignition and Tune-Up Products do you sell for my 2003 BMW 525i?
As of 8/2/26, these are some of the most in-demand types of Ignition and Tune-Up Products for a 2003 BMW 525i:
Can I get help with 2003 BMW 525i Ignition and Tune-Up Product orders?
Contact our customer support team, by chat or phone, through the help desk page, where you can find instant answers about BMW Ignition and Tune-Up Products and more.
What is your return policy for BMW 525i Ignition and Tune-Up Products?
Advance Auto Parts keeps returns simple. For new BMW 525i Ignition and Tune-Up Products and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.
