Search
Advanced Search
Free Shipping on eligible itemsFree Shipping on eligible items
My Cart

Bosch Platinum+4 High-Performance Car Spark Plugs

Top brands like NGK, DENSO, Autolite, and Champion help maximize your engine’s power and performance. We carry thousands of automotive spark plugs for everything from a Chevy to a Ford or a Volkswagen to a Toyota, all backed by our 100% fitment guarantee. Browse popular series, including NGK Iridium, NGK Racing, and NGK G-Power, to find the perfect replacement spark plugs for your vehicle.

NGK spark plugs and DENSO spark plugs, plus those from Autolite, Bosch, and Champion, help maximize engine power and operating performance ride after ride. We carry thousands of spark plugs for everything from Chevy to Ford, Volkswagen to Toyota, all with a 100% fitment guarantee. Browse popular spark plugs including NGK Iridium, NGK Racing, NGK G-Power, and many more replacement spark plugs. Ensure they’re well protected in the Cylinder Head and properly connected via the Coil Boots when replacing them.

Click to Learn MoreClick to Learn More
Select Your Vehicle

Filter By Part Details
Clear All
View as Grid List

46 Items

Set Ascending Direction
  1. Bosch Spark Plug
    Bosch Platinum+4 6743 Spark Plug
    Special Price $9.19 Regular Price $12.99
    Bosch
    Out of stock
  2. Bosch Spark Plug
    2 pc Bosch Platinum+4 6743 Spark Plugs
    Special Price $17.13 Regular Price $23.99
    Bosch
    Out of stock
  3. Bosch Spark Plug
    4 pc Bosch Platinum+4 6743 Spark Plugs
    Special Price $34.07 Regular Price $48.99
    Bosch
    Out of stock
  4. Bosch Spark Plug
    4 pc Bosch Platinum+4 Spark Plugs for 1999 BMW 318ti 1.9L L4
    Special Price $43.46 Regular Price $61.99
    Bosch
    Out of stock
  5. Bosch Spark Plug
    4 pc Bosch Platinum+4 Spark Plugs for 1996-1998 BMW Z3 1.9L L4
    Special Price $43.46 Regular Price $61.99
    Bosch
    Out of stock
  6. Bosch Spark Plug
    4 pc Bosch Platinum+4 Spark Plugs for 2002-2008 Mini Cooper 1.6L L4
    Special Price $43.46 Regular Price $61.99
    Bosch
    Out of stock
  7. Bosch Spark Plug
    6 pc Bosch Platinum+4 Spark Plugs for 1999-2002 BMW Z3 2.5L 2.8L 3.0L L6
    Special Price $61.51 Regular Price $87.99
    Bosch
    Out of stock
  8. Bosch Spark Plug
    6 pc Bosch Platinum+4 Spark Plugs for 2001-2005 BMW 330xi 3.0L L6
    Special Price $61.51 Regular Price $87.99
    Bosch
    Out of stock
  9. Bosch Spark Plug
    6 pc Bosch Platinum+4 Spark Plugs for 2003-2005 BMW Z4 2.5L 3.0L L6
    Special Price $61.51 Regular Price $87.99
    Bosch
    Out of stock
  10. Bosch Spark Plug
    6 pc Bosch Platinum+4 Spark Plugs for 1992-2005 BMW 320i 2.0L 2.2L L6
    Special Price $61.51 Regular Price $87.99
    Bosch
    Out of stock
  11. Bosch Spark Plug
    6 pc Bosch Platinum+4 Spark Plugs for 2001-2005 BMW 325i 2.5L L6
    Special Price $61.51 Regular Price $87.99
    Bosch
    Out of stock
  12. Bosch Spark Plug
    6 pc Bosch Platinum+4 Spark Plugs for 2001-2005 BMW 330i 3.0L L6
    Special Price $61.51 Regular Price $87.99
    Bosch
    Out of stock
  13. Bosch Spark Plug
    6 pc Bosch Platinum+4 Spark Plugs for 1999 BMW 328is 2.8L L6
    Special Price $61.51 Regular Price $87.99
    Bosch
    Out of stock
  14. Bosch Spark Plug
    6 pc Bosch Platinum+4 Spark Plugs for 2001-2005 BMW 525i 2.5L L6
    Special Price $61.51 Regular Price $87.99
    Bosch
    Out of stock
  15. Bosch Spark Plug
    6 pc Bosch Platinum+4 Spark Plugs for 1998-1999 BMW 323is 2.5L L6
    Special Price $62.77 Regular Price $89.99
    Bosch
    Out of stock
  16. Bosch Spark Plug
    6 pc Bosch Platinum+4 Spark Plugs for 2001-2005 BMW 530i 3.0L L6
    Special Price $62.77 Regular Price $89.99
    Bosch
    Out of stock
  17. Bosch Spark Plug
    6 pc Bosch Platinum+4 Spark Plugs for 2004-2006 BMW X3 2.5L 3.0L L6
    Special Price $62.77 Regular Price $89.99
    Bosch
    Out of stock
  18. Bosch Spark Plug
    6 pc Bosch Platinum+4 Spark Plugs for 1999-2000 BMW 328i 2.8L L6
    Special Price $62.77 Regular Price $89.99
    Bosch
    Out of stock
  19. Bosch Spark Plug
    6 pc Bosch Platinum+4 Spark Plugs for 1999-2000 BMW 528i 2.8L L6
    Special Price $62.77 Regular Price $89.99
    Bosch
    Out of stock
  20. Bosch Spark Plug
    6 pc Bosch Platinum+4 Spark Plugs for 2001-2006 BMW X5 3.0L L6
    Special Price $62.77 Regular Price $89.99
    Bosch
    Out of stock
  21. Bosch Spark Plug
    6 pc Bosch Platinum+4 Spark Plugs for 2001-2006 BMW 330Ci 3.0L L6
    Special Price $62.77 Regular Price $89.99
    Bosch
    Out of stock
  22. Bosch Spark Plug
    6 pc Bosch Platinum+4 Spark Plugs for 2000 BMW 328Ci 2.8L L6
    Special Price $62.77 Regular Price $89.99
    Bosch
    Out of stock
  23. Bosch Spark Plug
    6 pc Bosch Platinum+4 Spark Plugs for 2001-2006 BMW 325Ci 2.5L L6
    Special Price $62.77 Regular Price $89.99
    Bosch
    Out of stock
  24. Bosch Spark Plug
    6 pc Bosch Platinum+4 Spark Plugs for 2001-2005 BMW 325xi 2.5L L6
    Special Price $62.77 Regular Price $89.99
    Bosch
    Out of stock
  25. Bosch Spark Plug
    6 pc Bosch Platinum+4 Spark Plugs for 1998-2000 BMW 323i 2.5L L6
    Special Price $62.77 Regular Price $89.99
    Bosch
    Out of stock
  26. Bosch Spark Plug
    6 pc Bosch Platinum+4 Spark Plugs for 2000 BMW 323Ci 2.5L L6
    Special Price $62.77 Regular Price $89.99
    Bosch
    Out of stock
  27. Bosch Spark Plug
    8 pc Bosch Platinum+4 6743 Spark Plugs
    Special Price $67.26 Regular Price $95.99
    Bosch
    Out of stock
  28. Bosch Spark Plug
    8 pc Bosch Platinum+4 Spark Plugs for 2004-2005 BMW 645Ci 4.4L V8
    Special Price $79.56 Regular Price $113.99
    Bosch
    Out of stock
  29. Bosch Spark Plug
    8 pc Bosch Platinum+4 Spark Plugs for 2002-2005 BMW 745i 4.4L V8
    Special Price $79.56 Regular Price $113.99
    Bosch
    Out of stock
  30. Bosch Spark Plug
    8 pc Bosch Platinum+4 Spark Plugs for 2002-2005 BMW 745Li 4.4L V8
    Special Price $79.56 Regular Price $113.99
    Bosch
    Out of stock
  31. Bosch Spark Plug
    8 pc Bosch Platinum+4 Spark Plugs for 1999-2001 BMW 740iL 4.4L V8
    Special Price $79.56 Regular Price $113.99
    Bosch
    Out of stock
  32. Bosch Spark Plug
    8 pc Bosch Platinum+4 Spark Plugs for 2000-2006 BMW X5 4.4L 4.6L 4.8L V8
    Special Price $79.56 Regular Price $113.99
    Bosch
    Out of stock
  33. Bosch Spark Plug
    8 pc Bosch Platinum+4 Spark Plugs for 2003-2005 Land Rover Range Rover 4.4L V8
    Special Price $79.56 Regular Price $113.99
    Bosch
    Out of stock
  34. Bosch Spark Plug
    8 pc Bosch Platinum+4 Spark Plugs for 1999-2001 Bentley Arnage 4.4L V8
    Special Price $79.56 Regular Price $113.99
    Bosch
    Out of stock
  35. Bosch Spark Plug
    8 pc Bosch Platinum+4 Spark Plugs for 1999-2001 BMW 740i 4.4L V8
    Special Price $79.56 Regular Price $113.99
    Bosch
    Out of stock
  36. Bosch Spark Plug
    8 pc Bosch Platinum+4 Spark Plugs for 2004-2005 BMW 545i 4.4L V8
    Special Price $81.18 Regular Price $115.99
    Bosch
    Out of stock
  37. Bosch Spark Plug
    8 pc Bosch Platinum+4 Spark Plugs for 2000-2003 BMW M5 5.0L V8
    Special Price $81.18 Regular Price $115.99
    Bosch
    Out of stock
  38. Bosch Spark Plug
    8 pc Bosch Platinum+4 Spark Plugs for 2004-2007 Morgan Aero 8 4.4L V8
    Special Price $81.18 Regular Price $115.99
    Bosch
    Out of stock
  39. Bosch Spark Plug
    8 pc Bosch Platinum+4 Spark Plugs for 1999-2003 BMW 540i 4.4L V8
    Special Price $81.18 Regular Price $115.99
    Bosch
    Out of stock
  40. Bosch Spark Plug
    8 pc Bosch Platinum+4 Spark Plugs for 2000-2003 BMW Z8 4.8L 5.0L V8
    Special Price $81.18 Regular Price $115.99
    Bosch
    Out of stock
  41. Bosch Spark Plug
    12 pc Bosch Platinum+4 Spark Plugs for 2003-2008 BMW 760Li 6.0L V12
    Special Price $117.62 Regular Price $167.99
    Bosch
    Out of stock
  42. Bosch Spark Plug
    12 pc Bosch Platinum+4 Spark Plugs for 1999-2001 BMW 750iL 5.4L V12
    Special Price $117.62 Regular Price $167.99
    Bosch
    Out of stock
  43. Bosch Spark Plug
    12 pc Bosch Platinum+4 Spark Plugs for 2004-2006 BMW 760i 6.0L V12
    Special Price $120.02 Regular Price $170.99
    Bosch
    Out of stock
  44. Bosch Spark Plug
    12 pc Bosch Platinum+4 Spark Plugs for 2004-2013 Rolls-Royce Phantom 6.7L V12
    Special Price $120.02 Regular Price $170.99
    Bosch
    Out of stock
  45. Bosch Spark Plug
    12 pc Bosch Platinum+4 Spark Plugs for 1999-2002 Rolls-Royce Silver Seraph 5.4L V12
    Special Price $120.02 Regular Price $170.99
    Bosch
    Out of stock
  46. Bosch Spark Plug
    12 pc Bosch Platinum+4 Spark Plugs for 2002 Rolls-Royce Park Ward 5.4L V12
    Special Price $120.02 Regular Price $170.99
    Bosch
    Out of stock
per page

The Sixity Auto Advantage

Finding the right car spark plugs can seem complicated, but our goal is to make it simple. We combine a massive selection of parts from trusted brands with the expert, US-based support you need to make the right choice. With fast shipping and a 100% fitment guarantee, we provide a hassle-free shopping experience that has earned the trust of over a million customers.

Platinum, Iridium, and More

Choosing the right material is key to your engine’s performance and longevity. We carry a massive selection of aftermarket spark plugs in every type, from long-lasting iridium to dependable copper plugs for classic vehicles. Whatever your engine needs, we have the right plug to match its specific requirements, ensuring optimal spark and efficiency.

Expert Support When You Need It

Not sure which plug is right for your vehicle? Our friendly, US-based customer support team is here to help. With deep knowledge of our full catalog, they can guide you to the perfect car spark plugs for your specific make and model. We are committed to helping you buy with confidence and getting your installation done right the first time.

Frequently Asked Questions

Got a question about our automotive spark plugs? Here are a few things people often ask. For anything else, our main FAQ page has you covered.

How do I find the right spark plugs for my car?

Your best bet is our vehicle selector tool. Just plug in your car’s info, and we’ll show you exactly which plugs are guaranteed to work.

Are your aftermarket spark plugs as good as the originals?

Definitely. We only carry parts that are as good or better than the ones that came in your car, but without those dealership prices.

How often should I replace car spark plugs?

That really depends on the type. A standard copper plug is usually good for about 20,000 miles, while a high-end iridium one can last 100,000. Your owner’s manual will have the exact schedule for your engine.

Spark Plug Features

  • Precision ceramic insulators
  • Corrosion-resistant shell with triple high pressure gas seals
  • Screw or snap-on electrical connectors
  • Pre-installed metal compression gaskets
  • Copper-core electrode cooling
  • Application specific heat-range design
  • Improved cold-starting performance
  • Smooth firing at high or low engine RPM
  • Reduced electrode erosion and long service life
  • Enhanced ignition efficiency and fuel economy
  • Superior anti-fouling characteristics
  • Reduced hot-spark firing voltage requirements
  • Maximum engine horsepower and torque
  • Superior throttle-response, acceleration and WOT performance
  • Precision Laser-welded Iridium electrodes - 6X harder than platinum
  • Precision ceramic insulators
  • Corrosion-resistant shell with triple high pressure gas seals
  • Screw or snap-on electrical connectors
  • Pre-installed metal compression gaskets
  • Copper-core electrode cooling
  • Application specific heat-range design
  • Improved cold-starting performance
  • Smooth firing at high or low engine RPM
  • Reduced electrode erosion and long service life
  • Enhanced ignition efficiency and fuel economy
  • Superior anti-fouling characteristics
  • Reduced hot-spark firing voltage requirements
  • Maximum engine horsepower and torque
  • Superior throttle-response, acceleration and WOT performance
  • Precision Laser-welded Iridium electrodes - 6X harder than platinum
free shipping on eligible items at sixityauto.com

FAST & FREE SHIPPING
On eligible items

At SixityAuto.com, we offer free shipping on thousands of eligible items. We also ship FAST. Over 99% of all items ordered will ship within one business day. Plus, we ship from our strategically located warehouses on the East and West Coast to save precious shipping time.

100% fitment guarantee at sixityauto.com

100% FITMENT GUARANTEE
Your parts will fit as advertised

Shop with confidence, knowing that your purchase from Sixity Auto will fit your vehicle. If after purchase you determine that your part does not fit the vehicle we advertised, simply contact us to initiate a return. We want your parts to fit!

5-star customer rated at sitejabber

RAVE REVIEWS
5-Star Rated on Sitejabber

Don't take it from us - check out our feedback from our customers! Sixity Auto has partnered with Sitejabber, the industry leader in tracking customer loyalty and feedback, to bring genuine product and customer service reviews.

Plus read thousands of authentic reviews on Trustpilot, Google, Reseller Ratings, the Better Business Bureau, and more!

call sixity auto 8am to 8pm Eastern, Monday through Friday

WE'RE HERE TO HELP
(888) 679-6279
Monday through Friday, 8am-8pm Eastern

We speak your language. Our staff has decades of experience selling auto parts to enthusiasts like you. Whether it's for your car, truck, or van, we have staff on hand that can answer your questions and make sure you get the part you're looking for.

For phone sales or help with product fitment questions, our U.S.-based customer service staff in California and Indiana is available weekdays, 8am-8pm ET.

tax exempt shopping available for businesses

BUILT FOR BUSINESS
Tax-exempt shopping available

Sixity Auto works with a wide range of business customers—from repair shops and dealerships to fleet operators, government organizations, and others that purchase parts for resale or operational use.

If you are a qualified tax-exempt or resale customer, submit your documentation and we'll set you up for tax-free shopping. Check out all the details here.

military members and vets save 10% every day

MILITARY DISCOUNT
Save 10% on every purchase

Sixity Auto is proud to support our Active-Duty Service Members, Vets, and their immediate families. To show a token of our thanks, we extend a 10% discount on your entire purchase, every single day.

We use VerifyPass (formerly ID Discount) to help us manage our Military Discount program. Click here for all the details!

Sixity PaymentsSixity Payments
A+ Rated by BBBA+ Rated by BBB
SecurityMetrics card safe certification logo

© 2026 Sixity, Inc. Part of Proximity Group, an American-owned and operated online retailer. All Rights Reserved.

© 2026 Sixity, Inc. Part of Proximity Group, an American-owned and operated online retailer. All Rights Reserved.