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25% Off Online Orders of Select Hard Parts. Enter Promo Code MMJ30 in Cart.

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25% Off Select Parts and Accessories
Receive 25% Off Your Online or In-Store Purchase. Use promotional code MMJ25 at checkout to receive discount. 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 will be displayed in product search results and product detail pages. INCLUDES the following categories: Starters, Alternators, Fuel Pumps, Radiators, Shocks & Struts, Chassis, CV Axles, Batteries, Ignition, Window Motors, Wipers, Appearance Chemicals, Car Wash Accessories, Floor Mats, Lift Equipment, Hand Tools, Headlamps and Bulbs. Excludes the following brands: 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 and BBK Performance. Valid online until 2:59 am EST on 5/1/17.

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  • Part #: 78380|
  • SKU: 9866201

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Pay in Store Available

    • Helps maintain diesel engine performance by keeping fuel injectors clean and improving lubricity of diesel fuel
    • Save fuel by keeping injectors clean
Sale Price
$7.49
$4.90
PayPal available for online purchases. Major credit cards accepted online and in store. Pay online, in-store or take advantage of our Pep Boys credit card. Learn more and see additional details in cart.

STP Diesel Treatment & Injector Cleaner

Use Regularly When You Fill Up! Formulated to help prevent deposit build-up in diesel engines. Without cleaning, these deposits can harm performance, cause corrosion and waste fuel.
  • Helps maintain diesel engine performance by keeping fuel injectors clean and improving lubricity of diesel fuel
  • Save fuel by keeping injectors clean
  • Maintain performance by preventing deposit build-up, corrosion and rust
  • Fight fuel line freeze and wax gel formation


9866201