BMW 325i Ignition and Tune-Up Products

Please Select your Vehicle to See Exact Fit Parts

Essential BMW 325i Ignition and Tune-Up Products

Encore Automotive – Knock Sensor, Genuine OE (Part No.SKS-G30002)

Knock Sensor, Genuine OE

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.

Product Features:
  • Genuine OE Part
  • Highly accurate engine vibration detection
  • Excellent material quality
See More

Carquest Premium – Knock Sensor (Part No.SBC4019)

Knock Sensor

from

$64.99
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.

Product Features:
  • Precision piezoceramic element ensures accurate response to a wide range of engine vibrations
  • Manufactured using the highest quality OEM materials to ensure optimal performance and rugged durability
  • Designed to meet or exceed all OEM specifications in fit, form & function
  • Extensive product testing includes salt spray, high/low temperature impact, thermal cycling, vibration, drop among other tests, to ensure all sensors meet or exceed OEM specifications.
See More

Carquest Premium – Coil On Plug Insulator Boot: Spring included, Designed for direct fit (Part No.35-7030)

Coil On Plug Insulator Boot: Spring included, Designed for direct fit

from

$6.99
Carquest Premium spark plug boots are engineered to restore ignition boot reliability and performance. They are designed to meet or exceed original equipment (O.E.) specifications for fit, form and function. Our spark plug boots offer excellent heat resistance as well as maximum protection against spark loss. Carquest Premium spark plug boots are built with a durable silicone compound for resistance to high heat and abrasion, resulting in a longer-lasting ignition repair.

Product Features:


    Product Features:
    • OE design provides an exact fit for your application
    • Provides excellent heat resistance as well as maximum protection against spark loss
    • Durable silicone compound for resistance to high heat or abrasion
    • Spring included with the spark plug boot
    • Design for direct compatibility
    • Multipack provides one time replace all COP for better deal
See More

NGK – Premium OE Fit & Design Spark Plug Wire Set: Tinned Copper Core, 7 Leads (Part No.54221)

Premium OE Fit & Design Spark Plug Wire Set: Tinned Copper Core, 7 Leads

from

$551.99
NGK tinned copper core wire sets provide excellent OE fit, performance and durability. High-temp premium silicone outer jacket and inner EPDM/silicone insulation contain high voltage currents for excellent dielectric strength. As required on certain European models, NGK utilizes a premium 29 gauge galvanized, tinned core wire. RFI suppression is located close to the source and thus built into NGK’s OE designed spark plug and distributor connectors and metallic resistor boots. Spark plug boots are glued to NGK cable with a silicone sealer for a watertight seal.

Product Features:
  • PERFECT FIT FOR YOUR VEHICLE: Built to OEM tolerances with OE quality or better materials
  • BUILT TO LAST: Outer Jacket built to withstand temperatures greater than 250 degrees Celsius, inner insulation EPDM or silicone for best dielectric strength
  • STAINLESS STEEL TERMINALS: Provide the highest possible retention to ensure positive connections through the life of the set
  • CYLINDER LEAD ID: Cylinder lead identification tags where possible make installation easier
  • LIMITED WARRANTY: See package for details
See More

Carquest Premium – Ignition Switch (Part No.CSA2547)

Ignition Switch

from

$169.99
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.

Product Features:
  • Durable Construction: Designed with high-quality materials to withstand harsh environmental conditions, ensuring long-lasting performance in extreme temperatures, vibrations, and moisture exposure.
  • Precision Engineering: Accurate sensing and switching capabilities provide reliable performance, reducing the risk of malfunctions and improving vehicle safety and efficiency.
  • Easy Installation & Maintenance: Designed for quick installation and minimal upkeep, reducing downtime and repair costs for both manufacturers and consumers.
  • Fit/Form/Function: Each vehicle electronic component is engineered to meet or surpass OEM standards, ensuring precise fit, optimal functionality, and reliable performance.
See More

Carquest Premium – Ignition Switch (Part No.CSC1516)

Ignition Switch

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.

Product Features:
  • Durable Construction: Designed with high-quality materials to withstand harsh environmental conditions, ensuring long-lasting performance in extreme temperatures, vibrations, and moisture exposure.
  • Precision Engineering: Accurate sensing and switching capabilities provide reliable performance, reducing the risk of malfunctions and improving vehicle safety and efficiency.
  • Easy Installation & Maintenance: Designed for quick installation and minimal upkeep, reducing downtime and repair costs for both manufacturers and consumers.
  • Fit/Form/Function: Each vehicle electronic component is engineered to meet or surpass OEM standards, ensuring precise fit, optimal functionality, and reliable performance.
See More

Carquest Premium – Ignition Switch (Part No.CSC2271)

Ignition Switch

from

$154.99
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.

Product Features:
  • Durable Construction: Designed with high-quality materials to withstand harsh environmental conditions, ensuring long-lasting performance in extreme temperatures, vibrations, and moisture exposure.
  • Precision Engineering: Accurate sensing and switching capabilities provide reliable performance, reducing the risk of malfunctions and improving vehicle safety and efficiency.
  • Easy Installation & Maintenance: Designed for quick installation and minimal upkeep, reducing downtime and repair costs for both manufacturers and consumers.
  • Fit/Form/Function: Each vehicle electronic component is engineered to meet or surpass OEM standards, ensuring precise fit, optimal functionality, and reliable performance.
See More

Carquest Premium – Distributor Cap and Rotor Kit (Part No.CAE1835)

Distributor Cap and Rotor Kit

from

$132.99
The distributor cap & rotor are just two pieces of this type of ignition system which is typically driven by the engine’s camshaft. The distributor is the device that delivers the ignition spark to the spark plugs at a precise time, and spark timing is critical. Any wear or component out of place in this type of system will result in failure. Within the distributor and mounted to it are many individual pieces which allow the distributor and system to be maintained and repaired to keep it in top working order.

Product Features:
  • All products are constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
  • Cap terminal conductor wires formed with precision guided machines to ensure precise final location in the final housing assembly.
  • Terminal inserts manufactured to precise tolerances to ensure a guaranteed electrical connection between the cap conductor wires and spark plug wire terminals.
  • Distributor rotor blade coated with RFI coating to prevent electrical magnetic interference with the vehicles electrical system.
  • Distributor and rotor housings manufactured using the latest plastic technologies to guarantee di-electric strength and long life cycle.
See More

Carquest Premium – Distributor Cap (Part No.CAE1689)

Distributor Cap

from

$89.99
The distributor cap & rotor are just two pieces of this type of ignition system which is typically driven by the engine’s camshaft. The distributor is the device that delivers the ignition spark to the spark plugs at a precise time, and spark timing is critical. Any wear or component out of place in this type of system will result in failure. Within the distributor and mounted to it are many individual pieces which allow the distributor and system to be maintained and repaired to keep it in top working order.

Product Features:
  • All products are constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
  • Cap terminal conductor wires formed with precision guided machines to ensure precise final location in the final housing assembly.
  • Terminal inserts manufactured to precise tolerances to ensure a guaranteed electrical connection between the cap conductor wires and spark plug wire terminals.
  • Distributor rotor blade coated with RFI coating to prevent electrical magnetic interference with the vehicles electrical system.
  • Distributor and rotor housings manufactured using the latest plastic technologies to guarantee di-electric strength and long life cycle.
See More

E3 – DiamondFIRE Automotive Spark Plug: More Power & Fuel Efficiency (Part No.E3.64)

DiamondFIRE Automotive Spark Plug: More Power & Fuel Efficiency

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.

Product Features:
  • E3’s Diamond Fire edge to edge ground electrode provides maximum performance with increased efficiency and a faster more complete burn
  • Smoother Acceleration & Idle – The faster flame initiated by the spark plug results in a more complete burn of the ingested fuel charge. More pressure is created against the piston more fuel is put to work
  • Energy – Power output improved up to 6% on average in the typical operating ranges. Results will vary.
  • Efficiency – The “diamond shaped” side wire electrode projects the combustion spark in a way that more quickly ignites the air/fuel mixture, thereby creating a significantly faster and larger flame kernel. The result is that more fuel is put to work durin
  • E3’s patented Diamond Fire Technology provides a cleaner burning combustion, which translates into fuel savings and reduced engine carbon deposits
  • The Spark Plugs are pre-gapped at the factory and cannot be adjusted.
See More

DENSO – U-Groove Spark Plug: OE Performance, K20HR-U11 (Part No.3381)

U-Groove Spark Plug: OE Performance, K20HR-U11

from

$7.99
The U-Groove Spark Plug features a patented U-groove ground electrode design that enhances ignitability, allowing for leaner fuel mixtures and improved engine efficiency. Built with a nickel center electrode tip and a flat seat type, this spark plug ensures reliable performance and compatibility with a wide range of vehicles, including classic and collector cars. Precision machine-rolled threads minimize the risk of seizing or cross-threading in aluminum heads, making installation smooth and secure. Designed to last twice as long as conventional plugs, it delivers over 30,000 miles of dependable operation. Each plug is 100% pre-fired to guarantee consistent performance, making it an excellent choice for maintaining OE-level performance in your engine.

Product Features:
  • Patented U-groove ground electrode design fires leaner mixtures than conventional plugs
  • Precision machine-rolled threads reduce seizing and cross-threading in delicate aluminum heads
  • Wide range of part numbers for thousands of applications, including classic and collector cars
  • Lasts twice as long as most conventional plugs
  • 100 percent pre-fired to assure reliable operation
  • U-Groove Conventional
See More

Autolite – Copper Resistor Spark Plug: Quick Starts & Reliable Performance (Part No.64)

Copper Resistor Spark Plug: Quick Starts & Reliable Performance

from

$3.99
Autolite Copper spark plugs are crafted to ensure quick starts and reliable performance, making them a dependable choice for your vehicle or application. Featuring a copper core center electrode, these spark plugs excel in thermal control and resist fouling, while the high nickel alloy center and ground electrode enhance durability for extended use. The high alumina multi-rib ceramic insulator boosts thermal conductivity and insulation, ensuring superior strength under demanding conditions. With a nickel-plated shell, these spark plugs resist corrosion, adding to their longevity. Designed for optimal fuel efficiency, they help improve fuel economy, saving you money over time. The mid-projection standard center electrode and flat seat type further contribute to their consistent performance. Equipped with a resistor, these spark plugs are built to meet regular grade expectations while delivering reliable ignition and smooth operation.

Product Features:
  • The copper core center electrode aids in thermal control and improves resistance to fouling.
  • Its specially engineered high nickel alloy center and ground electrode provides extended life.
  • The high alumina multi-rib ceramic insulator provides thermal conductivity and superior insulation for increased strength.
  • Designed with a nickel-plated shell that is corrosion resistant to provide increased durability for extended periods.
  • Good Fuel Economy: Designed to optimize fuel efficiency, these spark plugs help you achieve better fuel economy, saving you money at the pump.
See More

Dorman – Help – Spark Plug Non-Foulers – 14mm Gasket Seat Long Reach (Part No.42004)

Spark Plug Non-Foulers - 14mm Gasket Seat Long Reach

from

$9.99
This spark plug non fouler is designed for easy installation on specified vehicles to protect spark plugs from fouling and damage. It is engineered for durability and reliable performance.

Product Features:
  • Direct replacement – this spark plug non fouler is designed for easy installation to protect spark plugs from fouling and damage on specified vehicles
  • Ideal solution – this non-fouler preserves spark plug life and is a reliable replacement for an original non-fouler that has failed due to corrosion
  • Durable construction – made from quality components to ensure reliable performance and a long service life
  • Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
See More

Delphi – Ignition Coil: Meets or Exceeds Original Equipment Design, 1 Piece (Part No.GN10016)

Ignition Coil: Meets or Exceeds Original Equipment Design, 1 Piece

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.

Product Features:
  • Delphi coils provide OE performance, durability and electromagnetic capacity level requirements
  • Delphi ignition coils are designed to insert power into spark plugs to ensure fast starts, consistent engine performance and optimized fuel efficiency
  • Delphi uses smart winding process techniques to controls wire lengths, keeping voltage the same
  • We manufacture our ignition coils with a high quality wire coating that resists imperfections that lead to failure
See More

NGK – Premium COP Pencil Type Ignition Coil: Meets or Exceeds OE Specifications (Part No.49021)

Premium COP Pencil Type Ignition Coil: Meets or Exceeds OE Specifications

from

$52.99
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.

Product Features:
  • OE QUALITY: Vacuum-sealed premium epoxy resin and thermoplastic coil housings provide superior dielectric strength, voltage insulation and durability
  • OPTIMAL PERFORMANCE: Precision coil windings and laminations maximize outputs, custom NGK ASIC chipset optimizes efficiency, prevents component damage
  • EASE OF INSTALLATION: NGK Ignition Coils include ignition control module, premium high temperature coil boot, and jumper harnesses where required
  • THE NGK DIFFERENCE: Featuring superior materials and design enhancements
  • EXTENSIVE TESTING: NGK ignition coils must pass extreme testing during manufacturing to ensure the highest quality and durability standards are met
  • PRODUCT ENGINEERING: Advanced flow and stress modeling systems preemptively identify and avoid common failure points found in OE and competitor coils
See More

Bosch – Ignition Coil: Meets or Exceeds Original Equipment Specifications, 1 Piece (Part No.0221504800)

Ignition Coil: Meets or Exceeds Original Equipment Specifications, 1 Piece

from

$71.99
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.

Product Features:
  • Meets or exceeds OEM specification
  • Ensures reliable voltage for smooth engine performance
See More

Bosch – Ignition Coil: Meets Or Exceeds Original Equipment Specifications, 1 Piece (Part No.0221504029)

Ignition Coil: Meets Or Exceeds Original Equipment Specifications, 1 Piece

from

$73.99
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.

Product Features:
  • Meets or exceeds OEM specification
  • Excellent mechanical stability and corrosion protection
  • Direct fit application
  • Lower fuel consumption and reduced exhaust emissions for your vehicle
  • Ensure reliable voltage for smooth engine performance
See More

NGK – Premium OE Fit & Design Spark Plug Wire Set: Tinned Copper Core, 7 Leads (Part No.54212)

Premium OE Fit & Design Spark Plug Wire Set: Tinned Copper Core, 7 Leads

from

$487.99
NGK tinned copper core wire sets provide excellent OE fit, performance and durability. High-temp premium silicone outer jacket and inner EPDM/silicone insulation contain high voltage currents for excellent dielectric strength. As required on certain European models, NGK utilizes a premium 29 gauge galvanized, tinned core wire. RFI suppression is located close to the source and thus built into NGK’s OE designed spark plug and distributor connectors and metallic resistor boots. Spark plug boots are glued to NGK cable with a silicone sealer for a watertight seal.

Product Features:
  • PERFECT FIT FOR YOUR VEHICLE: Built to OEM tolerances with OE quality or better materials
  • BUILT TO LAST: Outer Jacket built to withstand temperatures greater than 250 degrees Celsius, inner insulation EPDM or silicone for best dielectric strength
  • STAINLESS STEEL TERMINALS: Provide the highest possible retention to ensure positive connections through the life of the set
  • CYLINDER LEAD ID: Cylinder lead identification tags where possible make installation easier
  • LIMITED WARRANTY: See package for details
See More

NGK – Direct Ignition Coil on Plug Boot: Premium Silicone (Part No.58925)

Direct Ignition Coil on Plug Boot: Premium Silicone

from

$40.99
Product Features:
  • PREMIUM GRADE SILICONE: Designed to withstand harsh environments
  • OEM MATCHED: Includes all required internal springs and ferrite resistors for superior performance and RFI noise suppression
  • LIMITED WARRANTY: See package for details
See More

NGK – Direct Ignition Coil on Plug Boot: Premium Silicone (Part No.58941)

Direct Ignition Coil on Plug Boot: Premium Silicone

from

$19.99
Product Features:
  • PREMIUM GRADE SILICONE: Designed to withstand harsh environments
  • OEM MATCHED: Includes all required internal springs and ferrite resistors for superior performance and RFI noise suppression
  • LIMITED WARRANTY: See package for details
See More

Carquest Premium – Distributor Rotor (Part No.DAA1232)

Distributor Rotor

from

$56.99
The distributor cap & rotor are just two pieces of this type of ignition system which is typically driven by the engine’s camshaft. The distributor is the device that delivers the ignition spark to the spark plugs at a precise time, and spark timing is critical. Any wear or component out of place in this type of system will result in failure. Within the distributor and mounted to it are many individual pieces which allow the distributor and system to be maintained and repaired to keep it in top working order.

Product Features:
  • All products are constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
  • Cap terminal conductor wires formed with precision guided machines to ensure precise final location in the final housing assembly.
  • Terminal inserts manufactured to precise tolerances to ensure a guaranteed electrical connection between the cap conductor wires and spark plug wire terminals.
  • Distributor rotor blade coated with RFI coating to prevent electrical magnetic interference with the vehicles electrical system.
  • Distributor and rotor housings manufactured using the latest plastic technologies to guarantee di-electric strength and long life cycle.
See More

Helping You Find the Right Ignition and Tune-Up Products for Your BMW 325i

You love your 325i. So we’ve made it easier than ever to help you find BMW 325i Ignition and Tune-Up Products in our online catalog. Our inventory holds 100 aftermarket and OEM Ignition and Tune-Up Products for your BMW 325i, ranging from $2.49 to $551.99.

We offer parts from 15 brands trusted to make quality Ignition and Tune-Up Products for your BMW 325i. Before you buy, take some time to read through customer reviews. We currently have 21,391 reviews of BMW 325i Ignition and Tune-Up Products from previous customers. Some of the top rated parts include DiamondFIRE Automotive Spark Plug: More Power & Fuel Efficiency with 4.1 stars and Platinum Spark Plug (AP3924): Improved Performance & Durability with 4.8 stars.

Find your 325i Ignition and Tune-Up Products here, order online, and have your order shipped directly to your home. Prefer to have an in-person look at your BMW 325i part to confirm it’s just right? You can find your nearest Advance Auto Parts store and confirm they have the part in stock before heading over.

Top Ignition and Tune-Up Products Brands for Your BMW 325i

Our inventory holds Ignition and Tune-Up Products for your BMW 325i from 15 trusted brands. You’ll find OEM and aftermarket parts from brands like DENSO, NGK, and Autolite, all of which can keep that BMW happy.

Top-Rated NGK Ignition and Tune-Up Products

Leading NGK Ignition and Tune-Up Products

We carry NGK brand parts for your BMW 325i across several catalog categories, including Spark Plugs. Some of our most reviewed NGK parts include:

FAQs for BMW 325i Ignition and Tune-Up Products

What are the most purchased Ignition and Tune-Up Products for the BMW 325i?

Out of 100 Ignition and Tune-Up Products for the BMW 325i, the most popular in our inventory are:
Iridium XP Fine wire Spark Plug: Improved Durability, More Focused Ignition
from $10.99
This product is not rated
Iridium XP Fine wire Spark Plug: Improved Durability, More Focused Ignition
Spark Plugs

What are the top-rated BMW 325i Ignition and Tune-Up Products?

Top-rated Ignition and Tune-Up Products for your BMW 325i based on customer reviews/ratings are:
DiamondFIRE Automotive Spark Plug: More Power & Fuel Efficiency
from $8.49
(184)
DiamondFIRE Automotive Spark Plug: More Power & Fuel Efficiency
“Works well, better gas milage”
Platinum Spark Plug (AP3924): Improved Performance & Durability
from $4.99
(126)
Platinum Spark Plug (AP3924): Improved Performance & Durability
“Worked out great and made my car run better”
Platinum TT Spark Plug with Twin-Tip Design for Enhanced Ignition
from $3.99
(105)
Platinum TT Spark Plug with Twin-Tip Design for Enhanced Ignition
“Very nice quality. Installed like factory. Ran great.”