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Buy 3 Tires Get the 4th Free or Buy 2 Or More Tires and Get 15% Off

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Buy 3 Select Tires, Get the 4th Free Instantly
Buy 3 Tires, Get 4th Tire Free Instantly. Receive a discount equal to the price of a single tire when four tires are added to the cart. Valid on select in stock tires only. Those tires for which discount is available will be identified in search results & product detail pages. All other tires and special order tires are excluded from this offer. Valid when scheduled for installation on PepBoys.com and installation is completed between 9/27/16 through 10/5/16


Buy 2 Tires, Get 15% Off
Receive 15% off 2 tires on your online purchase. Use promotional code ROLLOUT15 at checkout to receive discount. This offer cannot be combined with any other offers, coupons or rebates. Valid on select in stock tires only. Those tires for which discount is available will be identified in search results & tire detail pages. All other tires, as well as special order tires, are excluded from this offer. Valid if purchased online or installed by 10/5/16.

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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