2003 BMW 525i Fuel and Emissions Systems

Essential 2003 BMW 525i Fuel and Emissions Systems

Carquest Premium – Fuel Pump Module Assembly HS1284788: Fuel Pump, Sending Unit, Wiring Harness and Strainer (Part No.HS1284788)

Fuel Pump Module Assembly HS1284788: Fuel Pump, Sending Unit, Wiring Harness and Strainer

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$141.99
Carquest Premium fuel pump modules and assemblies are built to meet or exceed Original Equipment (OE) specifications for fit, form and function. We have invested in industry-leading quality improvements like upgraded turbine impellers and 100% carbon commutators to deliver greater reliability. Carquest Premium fuel pump modules are supplied with the pump strainer and gaskets or seals when required for the application. Carquest Premium fuel pump modules are engineered with superior quality components to provide the longest life and reliable performance.

Product Features:
  • Meets or exceeds OE specifications for fit, form and function
  • 100% carbon commutators provide resistance to aggressive fuels and double the life expectancy of the pump
  • OE upgraded turbine impellers greatly reduce fuel pulsation
  • All fuel pumps are 100% performance tested
  • Includes installation gaskets or seals where applicable
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aFe POWER – Sprint Booster (Part No.77-16304)

Sprint Booster

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$297.99
Silver Bullet throttle body spacers create turbulence in the air flow at the point just prior entry into the engine increasing horsepower, torque and improving throttle response and fuel efficiency. Silver Bullet throttle body spacers are constructed out of durable T-6061 billet aluminum and using a unique serrated/helix entry to create turbulence at the manifold while eliminating the annoying whistle found in other helix only throttle spacers.

Product Features:
  • Reduces Throttle Response Time
  • Improves Acceleration
  • Easy To Install
  • Does Not Affect The Vehicles Electronic System
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Carquest Premium – Remanufactured Fuel Injector (Part No.A212-2105)

Remanufactured Fuel Injector

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$46.99
CARQUEST’S line of remanufactured OEM fuel injectors are remanufactured using a proven 15 step process at a state-of-the-art remanufacturing facility in the U.S.A. Each injector is 100% tested under multiple operating conditions to ensure each injector meets or exceeds OE specifications for flow rate, spray pattern, coil resistance, form, fit and function. Each injector includes new external seals and O-rings.

Product Features:
  • Each unit is 100% tested to OE specifications
  • Includes new O-rings and seals made of premium OE quality materials
  • Includes application specific technical bulletin, where applicable
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Vaico – Intake Man. Runner V (Part No.B1220334716VCO)

Intake Man. Runner V

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$413.02
Intake Man. Runner V

Rein – Breather Hose (Part No.ABV0202)

Breather Hose

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$29.99
Rein Automotive OE quality vacuum hoses fit European vehicles the way the original manufacturer intended. Designed to be direct replacements for OE hoses, Rein hoses are identical to the OEM, from the size and shape of their branches to the thermoplastic quick connect fittings.

Product Features:
  • Matches original equipment design specifications.
  • Manufactured with high quality materials.
  • Direct fit for easy installation.
  • Resistant to heat, salt, road debris, oil and other contaminants.
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Dorman – Help – PCV System Oil Separator (Part No.46103)

PCV System Oil Separator

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$103.99
This engine crankcase breather hose check valve is designed to match the fit and function of the original valve on specified vehicles, and is engineered for durability and reliable performance.

Product Features:
  • Direct replacement – this engine crankcase breather hose check valve is designed to match the fit and function of the original valve on specified vehicles
  • Restores functionality – this valve is made to fit and fully restore part functionality after the original valve fails
  • Durable construction – this part is made from quality materials to ensure reliable performance and long service life
  • Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
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Carquest Premium – Fuel Injector Seal Kit (Part No.AS017)

Fuel Injector Seal Kit

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$2.99
CARQUEST fuel injector seal kits include the necessary O-rings and seals to properly reseal the injector, which is a recommended practice any time the injector is removed. Each kit services one injector and includes hard to find or previously dealer-only components.

Product Features:
  • Premium OE quality materials
  • Services one injector
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APA/URO Parts – Vapor Canister Gromm (Part No.B7085566156APA)

Vapor Canister Gromm

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$6.81
Vapor Canister Gromm

Carquest Premium – Locking Fuel Cap: 10582, Push In, Direct Fit, Provides Tight Seal, 1 Pack (Part No.10582)

Locking Fuel Cap: 10582, Push In, Direct Fit, Provides Tight Seal, 1 Pack

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$19.79
Manufactured with OEM quality materials and safety standards by an OE Supplier. Manufactured to pass all state and federal emissions requirements. Specifically designed pressure and vacuum relief valves to prevent evaporation of fuel. A leaking fuel cap can allow up to 30 gallons of gasoline to evaporate over the period of a year.

Product Features:
  • Protects your fuel from theft and vandalism
  • Passes all state and federal emissions tests
  • Manufactured from durable, long-life materials
  • Reduces air pollution with proper sealing and venting
  • Independently tested for emission control
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Carquest Premium – Evaporative Emissions System Leak Detection Pump (Part No.VDC1019)

Evaporative Emissions System Leak Detection Pump

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$267.99
Carquest premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.
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Carquest Premium – Diverter Valve (Part No.ECC1498)

Diverter Valve

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$116.99
CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.
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Pierburg – Electronic Change Over Valve (Part No.B7075343168APG)

Electronic Change Over Valve

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$60.44
Electronic Change Over Valve

Rein – Breather Hose Kit (Part No.ABK0129)

Breather Hose Kit

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$116.99
Rein Automotive OE quality breather hose kits fit European vehicles the way the original manufacturer intended. Designed to be direct replacements, all components of the Rein Breather Hose kits are identical to the OEM.

Product Features:
  • Provides all needed components to replace the crankcase breather valve.
  • Manufactured with high quality materials.
  • Direct fit components for easy installation.
  • Matches original equipment design specifications.
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Rein – Air Pump Pipe (Part No.B6031946374RIN)

Air Pump Pipe

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$38.35
Air Pump Pipe

Vemo – Purge Valve (Part No.B7080267466VMO)

Purge Valve

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$107.53
Purge Valve

Carquest Premium – Ambient Air Temperature Sensor (Part No.WTA1098)

Ambient Air Temperature Sensor

from

$39.99
CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.
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Pierburg – Secondary Air Pump (Part No.B6010298318APG)

Secondary Air Pump

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$445.73
Pierburg a global supplier to European automakers manufactures an OE-equivalent direct fit Air Pump that maintains the quality and performance of the Original Equipment it replaces. Pierburg designed a modular system of brackets, and vibration absorbing elements to ensure that the secondary air pump does not interact with its mounting location.

Product Features:
  • OE design
  • Low noise
  • Long working life
  • High thermal and mechanical resistance
  • Sealed bearing design
  • Housing sealed to protect against contamination
  • High output DC motor
  • Exact OE Body and engine mounting
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Delphi – Fuel Tank Cleaning Kit (Part No.FC01)

Fuel Tank Cleaning Kit

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$12.49
To perform a complete fuel pump replacement, clean the tank every time. Order the Delphi Fuel Tank Cleaning Kit (Part FC01). Remember, the original pump went into a clean fuel tank, to ensure the same level of performance, the new pump should too. 100 ye

Product Features:
  • Helps avoid premature fuel pump failure
  • Lint free towel included
  • Low suds formulation
  • Removes harmful contaminants from the fuel tank
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Dorman – Air Injection Pump Bushing (Part No.911-901)

Air Injection Pump Bushing

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$22.99
This secondary air injection pump mount is designed to match the fit and function of the original mount on specified vehicles, and is engineered for durability and reliable performance.

Product Features:
  • Direct replacement – this secondary air injection pump mount is designed to match the fit and function of the original mount on specified vehicles
  • Restores functionality – reliable replacement for an original cover that has failed due to corrosion
  • Durable construction – this part is made from quality materials to ensure reliable performance and long service life
  • Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
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Pierburg – Air Inject Check Val (Part No.B7040269654APG)

Air Inject Check Val

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$41.94
Air Inject Check Val

Rein – Air Flow Meter Boot (Part No.ABV0169)

Air Flow Meter Boot

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$27.99
Rein Automotive OE quality boots fit European vehicles the way the original manufacturer intended. Designed to be direct replacements for OE hoses, Rein hoses are identical to the OEM.

Product Features:
  • Direct fit for easy installation.
  • Manufactured with high quality materials.
  • Matches original equipment design specifications.
  • Resistant to heat, salt, road debris, oil and other contaminants.
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Bosch – Fuel Pressure Regulator O-Ring (Part No.C3002290581BOS)

Fuel Pressure Regulator O-Ring

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$4.63
Bosch is one of the largest global suppliers of automotive products, developing, manufacturing and supplying precision OE components and systems to vehicle manufacturers and the automotive aftermarket. 5mm x 1.5mm
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Rein – Hose Clamp (Part No.Y3063860432RIN)

Hose Clamp

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$3.57
Hose Clamp

Elring – Elring Intake Plenum O-RIng (Part No.A8028393965ELR)

Elring Intake Plenum O-RIng

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$1.74
Elring Intake Plenum O-RIngs are designed engineered and manufactured to OE specifications.

Product Features:
  • OE Quality
  • Vehicle Specific Composition
  • Highly Durable Sealing Surface
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Bosch – Oxygen Sensor (Part No.C5010281832BOS)

Oxygen Sensor

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$91.26
The Bosch oxygen sensor utilizes a mix of zirconium and yttrium oxides and other elements to form a tough base that withstands the intense stress to which oxygen sensors are subjected. Each element is incredibly strong for best-in-class performance and maximum service life.

Product Features:
  • OE-Equivalent.
  • Direct fit for easy installation.
  • OE Style connectors and wire lengths.
  • Base ceramic probe of Zirconium and Yttrium.
  • Patented Platinum Power Grid.
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Bosch – Oxygen Sensor (Part No.C5010266617BOS)

Oxygen Sensor

from

$182.53
The Bosch oxygen sensor utilizes a mix of zirconium and yttrium oxides and other elements to form a tough base that withstands the intense stress to which oxygen sensors are subjected. Each element is incredibly strong for best-in-class performance and maximum service life.

Product Features:
  • OE-Equivalent.
  • Direct fit for easy installation.
  • OE Style connectors and wire lengths.
  • Base ceramic probe of Zirconium and Yttrium.
  • Patented Platinum Power Grid.
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Wells Vehicle Electronics – Fuel Injection Pressure Regulator (Part No.5G1031)

Fuel Injection Pressure Regulator

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$69.99
Fuel Injection Pressure Regulator

Vemo – Relay (Part No.P2020309952VMO)

Relay

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$26.12
The Vemo Relay is an ideal high quality aftermarket replacement that is manufactured to meet or exceed OE specifications for fit, form, and function.

Product Features:
  • Premium aftermarket replacement
  • Provides performance and dependability
  • Manufactured to meet OE specifications
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2003 BMW 525i Fuel and Emissions Systems

You count on your 2003 BMW 525i to run right. That means taking care of it with regular maintenance, necessary repairs, and the right parts. Advance Auto Parts can help with all of that thanks to our extensive inventory of trusted Fuel and Emissions Systems. With 76 Fuel and Emissions Systems ranging in price from $1.74 to $482.99, you’re sure to find everything you need for your 2003 BMW 525i.

Brands matter. If you want to shop a specific Fuel and Emissions Systems brand, we stock 20 different brands like Carquest Premium, Bosch, and Delphi. 2003 BMW 525i Fuel and Emissions Systems start as low as $1.74!

One of the best ways to find top quality OEM or aftermarket Fuel and Emissions Systems is by asking professionals. Short of that, you can shop with confidence thanks to our 216 extensive product reviews on 2003 BMW 525i Fuel and Emissions Systems. Some of the top-rated Fuel and Emissions Systems products we carry are First Time Fit Oxygen Sensor with 4.9 stars and Oxygen Sensor: 4 Wire, 11.42" Long, Heated, Exact Fit with 4.9 stars.

Did we mention you can order your Fuel and Emissions Systems from our online catalog and have them shipped right to your garage? Or, if you feel like seeing the parts first-hand, search for your nearest Advance Auto Parts location above and pick up in-store when you’re ready. Browse our full Fuel and Emissions Systems inventory for your 2003 BMW 525i below to get started!

Top-Rated Fuel and Emissions Systems Brands For Your 2003 BMW 525i

Trusted Fuel and Emissions Systems OEM and aftermarket product brands are what Advance Auto Parts specializes in. The brands we work with are sure to keep that 2003 BMW 525i running right for years to come. In our inventory you’ll find brands like Carquest Premium, Bosch, Delphi, and even more.

Popular Cardone Fuel and Emissions Systems

You’ll find popular Cardone brand products across Fuel Injectors. All are waiting to get your 2003 BMW 525i back on the road. Some of the top-rated Cardone products in these categories are:
Mass Air Flow Sensor
from $99.99
(2)
Mass Air Flow Sensor
Air Flow Meters and Mass Air

FAQs for 2003 BMW 525i Fuel and Emissions Systems

What are the most purchased Fuel and Emissions Systems for the 2003 BMW 525i?

Out of 76 Fuel and Emissions Systems for the 2003 BMW 525i, the most popular in our inventory are:
Fuel Tank Cleaning Kit
from $12.49
This product is not rated
Fuel Tank Cleaning Kit
Fuel Tank Cleaning Kits
Fuel Injector Seal Kit
from $2.99
This product is not rated
Fuel Injector Seal Kit
Fuel Injector O-Ring Kits

What are the top-rated 2003 BMW 525i Fuel and Emissions Systems?

Top-rated Fuel and Emissions Systems for your 2003 BMW 525i based on customer reviews/ratings are:
First Time Fit Oxygen Sensor
from $94.74
(34)
First Time Fit Oxygen Sensor
“Quality fluid, works as it should.”
Switching Oxygen Sensor: 4 Wire, 13.75" Long, Heated, Direct Fit
from $92.99
(2)
Switching Oxygen Sensor: 4 Wire, 13.75" Long, Heated, Direct Fit
“Installed two in a 200 528i BMW in pre-cat application. Remove and Replace took 15 minutes for each sensor. Copper anti-seize paste was included in ”