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25% Off Online Orders of Select Hard Parts. Enter Promo Code MMJ25 in Cart.

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Receive Up To 25% Off Your Online Purchase Of Select Parts And Accessories
Use promotional code MMJ25 at checkout to receive 25% off the following categories: Select Brake Parts, Select Hi-Performance and Truck Accessories, Batteries, Shocks & Struts, Paint, Splash Guards, Select Ventvisors & Bug Shields, Springs & Spacers, Water Pumps, Belts, A/C Parts, Starters, Alternators, Fuel Pumps, Radiators, Radiator Fans, Thermostats, Caps & Clamps, Clutches, Spark Plugs, Plug Wires, Chassis, CV Axles, Batteries, Battery Chargers & Booster Cables, OE Locks, Rack & Pinons, Window Motors, RainX Wipers, Appearance Chemicals, Car Wash Accessories, Floor Mats, Lift Equipment, Hand Tools, Travel Accessories, Outdoor Lifestyle, Towing, Car Covers, Seat Covers, Wheel Covers, Body Repair, Collectibles and Apparel.

Use promotional code MMJ20 at checkout to receive 20% off the following categories: Ignition, Air Filters, Oil Filters, Bearings & Seals and Engine Parts.

Offers not valid in combination with any other discounts, promotions or items already on sale. Not valid on gift cards, special orders, installed merchandise, commercial or fleet purchases. Those products that are included in these offers will be displayed in product search results and product detail pages. Excludes the following brands: Champion, Powerstop, Razor, Traxxas, Superchips, Hypertech, Edge, Bully Dog, Diablo, Edelbrock, Holley, NOS, Proform, Specialty Auto, Autometer, Accel, K&N, Kenwood, Pioneer, Sony, Thule, Thule Karrite, JVC, Flowmaster, Hurst, B&M, MSD, Moog, Wagner, Philips and BBK Performance. Valid online until 11:59 PM EST on 9/24/17.

Receive 25% Off Wagner branded brake parts with your online purchase. Use promotional code: WAGNER25.

Receive 10% Off Select Champion, MOOG and FelPro branded products with your online purchase. Use promotional codes: CHAMP10, MOOG10 and/or FELPRO10.


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The Bosch Group is a leading global supplier of automotive and industrial technology, consumer goods and building technology.

A leading automotive supplier in North America, Bosch Automotive Technology represents the company’s largest business sector in North America, with approximately 30 primary locations.

Bosch OE Fine Wire Spark Plugs

Bosch OE Fine Wire Spark Plugs, including Double Iridium, Double Platinum and Platinum spark plugs, are built around OE technology, have an original equipment specific design and are manufactured to be OE equivalent replacements. As direct injection continues to grow across all makes (Domestic, Asian and European vehicles), and as ignition systems continue to increase in voltage output, things like advanced ceramic technology, spark position and correct gap are more critical than ever. Recognizing this, Bosch created these OE equivalent spark plugs for the aftermarket.

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Bosch Double Iridium


Bosch Double Iridium Spark Plugs represent the best of OE spark plug technology and are engineered to deliver both high performance and over 4X longer service life compared to standard copper spark plugs.
  • Double Iridium electrodes – iridium firing pin and iridium ground electrode inlay – offer higher performance
  • OE-matched spark position for compatibility with new Gasoline Direct Injection (GDI) technology

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Bosch Double Platinum


Bosch Double Platinum Spark Plugs are designed for durability – and the laser welded platinum inlay ground electrode provides 3X longer service life compared to standard copper spark plugs.
  • Fine wire platinum firing pin for better ignitability
  • Unique 360 continuous laser weld fuses corrosion resistant platinum firing pin to base

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Bosch Platinum


Bosch Platinum Spark Plugs, with special yttrium enhanced ground electrodes, are engineered for up to 2X longer service life compared to standard copper spark plugs.
  • Fine wire platinum firing pin for better ignitability
  • Unique 360 continuous laser weld fuses corrosion resistant platinum firing pin to base

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