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Spark Plug for 2003 BMW 525i

We have 22 Items In-stock. Select your vehicle's Submodel to continue.

NGK Spark Plug

NGK Spark Plug, NGK Laser Platinum, Direct Fit, Sold Individually
NGK Spark Plug NGK Spark Plug
$9.95 List Price $20.43 Save $10.48 Availability: In Stock
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  • SKU#: W0133-1634282
  • Anticipated Ship Out Time: Same day - 1 business day
  • Notes: Ships to U.S. addresses only. Cannot be shipped internationally.
Fits the following 2003 BMW 525i submodels:
  • All Engines | All Submodels
Rating: (see review/s)

"these plugs work great as of 20K miles the car runs well and notice no lack of power." posted by: JT on January 30, 2012 view all 8 reviews

NGK Spark Plug, NGK G-Power, Direct Fit, Sold Individually
NGK Spark Plug NGK Spark Plug
$12.70 List Price $14.99 Save $2.29 Availability: In Stock
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  • SKU#: NG7092
  • Plug Type: Resistor
  • Electrode Core Material: Copper
  • Anticipated Ship Out Time: 1-2 Business Days
  • Electrode Tip Material: Platinum
  • Gap Size: 1.016 mm
  • Notes: Ships to U.S. addresses only. Cannot be shipped internationally.
  • Reach: 19 mm
  • Thread Size: 14 mm
  • Warranty: 60-day NGK limited warranty
see more Fits the following 2003 BMW 525i submodels:
  • 6 Cyl 2.5L | Base
Rating: (see review/s)

"The plugs give an excellent spark if you use 8mm wires. Burns ALL fuel in the combustion chamber giving good performance and good gas mileage. Recommend a set of 8mm MSD wires and MSD ignition coil/coil pack." posted by: Sir_Killalot44 on April 9, 2009 view all 3 reviews

NGK Spark Plug, NGK Iridium IX, Direct Fit, Sold Individually
NGK Spark Plug NGK Spark Plug
$10.92 List Price $18.87 Save $7.95 Availability: In Stock
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  • SKU#: NG6418
  • Plug Type: Resistor
  • Electrode Core Material: Copper
  • Anticipated Ship Out Time: Same day - 1 business day
  • Electrode Tip Material: Iridium
  • Gap Size: 0.8 mm
  • Notes: Ships to U.S. addresses only. Cannot be shipped internationally.
  • Reach: 19 mm
  • Thread Size: 14 mm
  • Warranty: 60-day NGK limited warranty
see more Fits the following 2003 BMW 525i submodels:
  • 6 Cyl 2.5L | Base
NGK Spark Plug, NGK Laser Platinum, Direct Fit, Sold Individually
NGK Spark Plug NGK Spark Plug
$8.95 List Price $19.42 Save $10.47 Availability: In Stock
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  • SKU#: W0133-1635610
  • Anticipated Ship Out Time: Same day - 1 business day
  • Notes: Ships to U.S. addresses only. Cannot be shipped internationally.
Fits the following 2003 BMW 525i submodels:
  • All Engines | All Submodels
NGK Spark Plug, NGK Standard, Direct Fit, Sold Individually
NGK Spark Plug NGK Spark Plug
$11.91 List Price $20.43 Save $8.52 Availability: In Stock
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  • SKU#: NG3199
  • Plug Type: Resistor
  • Electrode Core Material: Copper
  • Anticipated Ship Out Time: Same day - 1 business day
  • Electrode Tip Material: Nickel alloy
  • Notes: Ships to U.S. addresses only. Cannot be shipped internationally.
  • Reach: 19 mm
  • Thread Size: 14 mm
  • Warranty: 60-day NGK limited warranty
see more Fits the following 2003 BMW 525i submodels:
  • 6 Cyl 2.5L | Base
Rating: (see review/s)

"I could not install these so I can not fairly comment on installation ease, but I am sure it was not hard. The tech siad they were the best ones, even better than Bosch so I can not complain. Installation instructions would be nice including gapping." posted by: zoom on May 7, 2008 view all 1 reviews

NGK Spark Plug, NGK Standard, Direct Fit, Sold Individually
NGK Spark Plug NGK Spark Plug
$15.85 List Price $18.70 Save $2.85 Availability: In Stock
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  • SKU#: NG7969
  • Plug Type: Resistor
  • Electrode Core Material: Copper
  • Anticipated Ship Out Time: Same day - 1 business day
  • Electrode Tip Material: Nickel alloy
  • Notes: Ships to U.S. addresses only. Cannot be shipped internationally.
  • Reach: 19 mm
  • Thread Size: 14 mm
  • Warranty: 60-day NGK limited warranty
see more Fits the following 2003 BMW 525i submodels:
  • 6 Cyl 2.5L | Base

Denso Spark Plug

Denso Spark Plug, Denso Iridium Power, Direct Fit, Sold Individually
Denso Spark Plug Denso Spark Plug
$13.75 List Price $16.23 Save $2.48 Availability: In Stock
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  • SKU#: NPIK20
  • Plug Type: Resistor
  • Electrode Core Material: Iridium
  • Anticipated Ship Out Time: Same day - 1 business day
  • Electrode Tip Material: Platinum
  • Gap Size: 1.1 mm
  • Reach: 19 mm
  • Thread Size: 14 mm
  • Warranty: 12-month Denso limited warranty
see more Fits the following 2003 BMW 525i submodels:
  • 6 Cyl 2.5L | Base
Rating: (see review/s)

"The front 3 Spark plugs easy to replace. The rear 3 are very hard to get to." posted by: CL on September 11, 2012 view all 1 reviews

Denso Spark Plug, Denso Platinum TT, Direct Fit, Sold Individually
Denso Spark Plug Denso Spark Plug
$5.60 List Price $6.61 Save $1.01 Availability: In Stock
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  • SKU#: NPPK20TT
  • Plug Type: Resistor
  • Electrode Core Material: Platinum
  • Anticipated Ship Out Time: Same day - 1 business day
  • Electrode Tip Material: Platinum
  • Gap Size: 1.1 mm
  • Heat Range: 20
  • Reach: 19 mm
  • Thread Size: 14 mm
  • Warranty: 12-month Denso limited warranty
see more Fits the following 2003 BMW 525i submodels:
  • 6 Cyl 2.5L | Base
Denso Spark Plug, Denso Iridium Power, Direct Fit, Sold Individually
Denso Spark Plug Denso Spark Plug
$13.23 List Price $15.61 Save $2.38 Availability: In Stock
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  • SKU#: NP5304
  • Plug Type: Resistor
  • Electrode Core Material: Iridium
  • Anticipated Ship Out Time: Same day - 1 business day
  • Gap Size: 0.044 in.
  • Reach: 19 mm
  • Thread Size: 14 mm
  • Warranty: 12-month Denso limited warranty
see more Fits the following 2003 BMW 525i submodels:
  • 6 Cyl 2.5L | Base
Denso Spark Plug, Direct Fit, Sold Individually, Same Day - 1 Business Day
Denso Spark Plug Denso Spark Plug
$2.95 List Price $6.75 Save $3.80 Availability: In Stock
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  • SKU#: W0133-1642307
Fits the following 2003 BMW 525i submodels:
  • All Engines | All Submodels
Denso Spark Plug, Denso Platinum TT, Direct Fit, Sold Individually
Denso Spark Plug Denso Spark Plug
$10.31 List Price $12.17 Save $1.86 Availability: In Stock
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  • SKU#: NP4504
  • Plug Type: Resistor
  • Electrode Core Material: Platinum
  • Anticipated Ship Out Time: Same day - 1 business day
  • Electrode Tip Material: Platinum
  • Gap Size: 1.02 mm
  • Reach: 19 mm
  • Thread Size: 14 mm
  • Warranty: 12-month Denso limited warranty
see more Fits the following 2003 BMW 525i submodels:
  • 6 Cyl 2.5L | Base
Denso Spark Plug, Denso Standard, Direct Fit, Sold Individually
Denso Spark Plug Denso Spark Plug
$5.38 List Price $6.35 Save $0.97 Availability: In Stock
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  • SKU#: NP5063
  • Plug Type: Resistor
  • Electrode Core Material: Copper
  • Anticipated Ship Out Time: Same day - 1 business day
  • Reach: 19 mm
  • Thread Size: 14 mm
  • Warranty: 12-month Denso limited warranty
see more Fits the following 2003 BMW 525i submodels:
  • 6 Cyl 2.5L | Base
Denso Spark Plug, Denso Standard, Direct Fit, Sold Individually
Denso Spark Plug Denso Spark Plug
$6.76 List Price $7.98 Save $1.22 Availability: In Stock
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  • SKU#: NPK20TXR
  • Plug Type: Resistor
  • Electrode Core Material: Copper
  • Anticipated Ship Out Time: Same day - 1 business day
  • Electrode Tip Material: Nickel alloy
  • Reach: 19 mm
  • Thread Size: 14 mm
  • Warranty: 12-month Denso limited warranty
see more Fits the following 2003 BMW 525i submodels:
  • 6 Cyl 2.5L | Base

Bosch Spark Plug

Bosch Spark Plug, Bosch Platinum+4, Direct Fit, Sold Individually
Bosch Spark Plug Bosch Spark Plug
$6.04 List Price $7.13 Save $1.09 Availability: In Stock
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  • SKU#: BS4417
  • Plug Type: Resistor
  • Electrode Core Material: Platinum
  • Anticipated Ship Out Time: Same day - 1 business day
  • Electrode Tip Material: Platinum
  • Gap Size: 1.6 mm
  • Reach: 19 mm
  • Thread Size: 14 mm
  • Warranty: 12-month or 12,000-mile Bosch limited warranty
see more Fits the following 2003 BMW 525i submodels:
  • 6 Cyl 2.5L | Base
Rating: (see review/s)

"Excellent Quality Sparki Plugs. Previously, someone had installed inferior Quality Spark Plugs in the Vehicle and they affected Performance. Installation needs to be carefully...Engine Cover has to be removed, Electrodes have to be extracted (affixed with Screws), Spark Plugs are set very deep inside of the Engine. There is also a Ground Connector that should be disconnected and reinstalled carefully. Spark Plugs do not need to be gapped. One must take the Time and Patience to put them in correctly or entrust someone who is both knowledgeable a Patient in order to do the Operation. The Spark Plugs are giving an excellent Performance since they have been installed." posted by: Vitznau on September 29, 2014 view all 1 reviews

Bosch Spark Plug, Direct Fit, Sold Individually, Same Day - 1 Business Day
Bosch Spark Plug Bosch Spark Plug
$10.95 List Price $19.78 Save $8.83 Availability: In Stock
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  • SKU#: W0133-1817571
Fits the following 2003 BMW 525i submodels:
  • 6 Cyl 2.5L | Base