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Shop BlueDevil Products

Whether you've discovered a leak, diagnosed a blown head gasket, or you've started hearing engine noise, BlueDevil Products are here to help! Easily search our list of symptoms to discover solutions for your problem. If you already know exactly what product you need, visit our products page for more information, videos, product directions, and more! Though a complete repair or replacement of defective parts is always your best option, we understand that may not always be possible or make financial sense for you or your vehicle. When you need a solution to keep your vehicle on the road, find the BlueDevil Products you need at your local O'Reilly Auto Parts Store.

Whether you’re stopping an oil leak, repairing a blown head gasket, or flushing your radiator, BlueDevil Products is your one-stop shop for DIY repairs. Their list of automotive care products is designed for easy use and lasting results. Trusted for generations by professional technicians and DIY mechanics alike, BlueDevil Auto Car Solutions offer cost-effective repair options for a variety of vehicle systems and issues. Reach for BlueDevil products at your local O’Reilly Auto Parts to complete your repair.
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BlueDevil Sealers and Stop Leaks Products

Sealers and Stop Leaks
BlueDevil Radiator Flushes and Block Products

Radiator Flushes and Block
BlueDevil Power Steering Fluid Products

Power Steering Fluids
BlueDevil Engine Repair/Revive Products

Engine Repair/Revive
20% OFF $125+ WITH PROMO CODE: GREEN20, Online Only

20% OFF $125+ WITH PROMO CODE: GREEN20, Online Only

Get 20% off $125 with promo code GREEN20. Online, ship to home only. 04/23/26 – 04/27/26. *Maximum discount $50.

20% off $125+: Valid on regularly priced in-stock items for Ship to Home orders that when purchased together total $125 or more (before tax, shipping and discount) on the website only. Excludes AIRAID, B&M, Bully Dog, DeVilbiss, Edelbrock, Flowmaster, Holley, Hurst, Ingersoll-Rand, K&N, MSD, SCT, and Spectre items.

To Redeem Offer: Add qualifying items totaling $125 or more to your shopping cart and select “Ship” as your delivery method. Enter promo code GREEN20 in the cart. The total in your shopping cart will be adjusted after promo code is applied. Excluded brands contribute toward minimum purchase amount to qualify for offer but are not eligible for discount. (Maximum $50.00 Discount.) Valid Thursday, April 23rd to Monday, April 27th, 2026 (11:59pm Hawaii Time Zone). Coupon code is not redeemable for cash, is nontransferable and cannot be replaced if lost or stolen. Not valid on same-day delivery orders. Void if copied, transferred or where prohibited by law. Customer pays sales tax and shipping fees.

Offer subject to adjustment due to returns, cancellations and exchanges. Additional taxes and duties may apply. Not valid with any other promotional gift with purchase. Offer may be modified or discontinued at any time without notice.

Offer Terms: Offer does not apply to gift card orders. Offer does not apply to Lead-Acid batteries. Cannot be used in combination with any other certificates, offers, or discounts or for payment on account. Not valid on previous purchases or store purchases. Shipping & handling and taxes do not qualify towards the minimum purchase. Valid for retail customers only. OReillyAuto.com only ships orders within the U.S.

Excluded Brands: Offer does not apply to AIRAID, B&M, Bully Dog, DeVilbiss, Edelbrock, Flowmaster, Holley, Hurst, Ingersoll-Rand, K&N, MSD, SCT, and Spectre items.


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Stop Oil Leaks with BlueDevil Oil Stop Leak

BlueDevil Oil Stop Leak is a fast and effective solution to seal oil leaks and restore your engine’s performance. This demonstration shows how easy it is to stop leaks in oil pan gaskets, crankshaft seals, valve seals, and more. If you're tired of dealing with oil spots or low oil levels, BlueDevil Oil Stop Leak is an affordable way to get your engine running smoothly again and reduce oil consumption and leaking without the need for costly repairs.

Repairing a Rear Main Seal Oil Leak

BlueDevil Rear Main Sealer is an effective solution designed to stop leaks and prevent further oil loss or engine damage due to a failed rear main seal. Rear main seals are often difficult to access, and typically require the transmission or transaxle to be removed from the engine – or the engine may even need to be removed from the vehicle entirely. Watch to learn more about the simple application process to see how this powerful sealer can restore your engine’s rear main seal and stop oil leaks, saving you from costly and extensive repairs. Repair leak points and restore performance with BlueDevil Rear Main Sealer.

Improve Your Radiators Performance with BlueDevil

BlueDevil 3-in-1 Radiator Flush is a powerful cleaner designed to remove rust, scale, and debris from your cooling system. This easy-to-use product can loosen rust, scale, and buildup, allowing you to flush these contaminants from the system to help your radiator and cooling system operate smoothly and efficiently. Whether you're dealing with overheating, contamination, or poor coolant circulation, BlueDevil’s 3-in-1 Radiator Flush can prevent costly repairs and help improve engine cooling performance.

Easy-to-use head gasket sealer -Permanent head gasket sealer-Compatible with gasoline and diesel engines-Safe head gasket sealer-BlueDevil Head Gasket Sealer-Engine Leak Repair-Blown head gasket fix-Engine-friendly gasket sealer-Automotive gasket sealer-Engine leak solution (each dash represents a separate line)

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