Rear main seal stop leak products are essential for addressing oil leaks in vehicles, providing a cost-effective solution to prevent engine damage. In 2025, the market offers a variety of top-rated options that effectively seal leaks and restore engine performance. These products are designed to rejuvenate seals, reduce oil consumption, and extend the life of your engine, making them a must-have for any car owner facing rear main seal issues. With numerous brands and formulations available, finding the right rear main seal stop leak can significantly enhance your vehicle's reliability and efficiency.
Bar's Leaks Rear Main Seal Repair, 16.9 oz
- Seals timing cover, cam seal, rear main and other hard to stop oil leaks
- Add to engine oil
- Specifically designed to seal rear main leaks, but also works better than a conventional stop leak on all other leaks
- Add entire bottle of Rear Main Seal Repair to engine crankcase (where you add oil) at or between oil changes. Do not overfill. Most leaks will stop within 100 miles or 2 days of driving
$10.99
SALE
−$7.19
BlueDevil Products 00234 Rear Main Sealer - 8 Ounce
- Permanent seal: This product is formulated to flow into damaged areas of the rear main seal to provide a permanent seal to keep your vehicle’s oil inside of the rear of the engine. Works as a permanent repair and does not need to be added when oil is changed.
- Easy to use: BlueDevil Rear Main Sealer is designed to be easy to use, making it accessible to a wide range of drivers. Simply pour the recommended amount into the engine oil.
- Restores while you drive: Designed to restore dried, cracked, and shrunken rubber seals to their original condition while you drive.
- Safe to use: Does not contain petroleum distillates which can destroy seals.
- Compatible with all types of engines: Works on gasoline or diesel engines that use synthetic or conventional oils, making it a versatile product that can be used on a wide range of vehicles.
$15.80
SALE
−$8.81
ATP Automotive AT-205 Re-Seal Stops Leaks, 8 Ounce Bottle
- Professional strength fast acting resealer, stops leaks fast
- Rejuivinates all rubber seals & gaskets in engines, transmissions, power steering, differentials and hydraulic systems
- Compatible with conventional and synthetic oils, ATF, gear oil, power steering fluids and hydraulic oil
- Does not contain petroleum distillates, will not over-swell or breakdown seals
- 8oz bottle will treat a 6 quart capacity, adjust accordingly
$14.92
AT-205 Seal Leak Stopper 8 Ounce - 2 Pack
- Professional strength fast acting resealer, stops leaks fast
- Compatible with conventional and synthetic oils, ATF, gear oil, power steering fluids and hydraulic oil
- Does not contain petroleum distillates, will not over-swell or breakdown seals
- Rejuivinates all rubber seals & gaskets in engines, transmissions, power steering, differentials and hydraulic systems
$36.35
Lubegard LG-Fixx Seal Fixx Multi-Purpose Stop Leak, 8 fl. oz
- Quickly stops seal-related leaks
- Fast acting formula
- Economical seal leak repair and treatment
- Effective on all rubber seals and gaskets
- Easy to use
$13.99
SALE
−$4.00
Bar's Leaks OS-1 Oil Seal Engine Oil Burning and Leak Repair, 16.9 oz.
- REPAIRS LEAKING MAIN SEALS AND GASKETS: We have designed this product to work in all gasoline and diesel engines including turbocharged, EcoBoost, hybrid and even racing engines.
- RENEWS WORN VALVE SEALS AND GUIDES: Your vehicle is a good candidate for Bar’s Leaks Oil Seal Engine Oil Burning & Leak Repair if it does not consume more than one quart of oil per day.
- STOPS OIL BURNING & BLUE EXHAUST SMOKE: This covers 3, 4, 5, 6, 8 and 10 cylinder engines in all cars, trucks, vans and SUV’s. Our product can also be used in heavy-duty applications referencing the appropriate dosage level.
- SEAL ALL OTHER OIL LEAKS, DRIPS AND CONSUMPTION: This applies to a wide range of other motor applications too - tractors, boats, RV’s, motorcycles (including wet clutch), ATV’s, lawn equipment.
- MADE IN THE USA
$17.99
SALE
−$2.41
ATP Automotive AT-205 Re-Seal Stops Leaks, 8 Ounce Bottle (2 Pack)
- Professional strength fast acting resealer, stops leaks fast
- Rejuivinates all rubber seals & gaskets in engines, transmissions, power steering, differentials and hydraulic systems
- Compatible with conventional and synthetic oils, ATF, gear oil, power steering fluids and hydraulic oil
- Does not contain petroleum distillates, will not over-swell or breakdown seals
- 8oz bottle will treat a 6 quart capacity, adjust accordingly
$36.99
XADO ATOMEX Oil Additive Stop Leak Engine - Restore Seal and Gaskets, Treatment for Car Engine High Mileage or Rear Main Seal, Best Stopper Leaks Reseal (Bottle, 250 ml)
- Elasticity Restorer: Look no further for a solution to restore elasticity ability of rubber gaskets and seals. Say goodbye to leaks and fugas with our formula for complete rejuvenation and protection.
- Leak Prevention: Ideal for stopping engine oil leakages. Engineered for all engines, including auto and motorcycle, our slick liquid formula fixes leaks and rejuvenates seals.
- Cost Saver: It offers complete protection for older and new engines. This multi-purpose aditivo is perfect for stopping leaks, enhancing engine performance, and extending the life of your vehicle.
- Efficiency Enhancer: Reduces engine noise and oil consumption with our advanced formula.The slick liquid fix rejuvenates seals, valves, and cylinders, ensuring smoother operation and reducing wear.
- Universal Compatibility: This multi-purpose sealant works with auto, motorcycle, and marine engines, preventing fugas and leaks while rejuvenating seals, valves, and cylinders.
$23.04
GoaMotors Rear Main Seal Set Oring Gasket Crankshaft Seal Fit for Chevrolet for GMC for Hummer for Pontiac LS LSX LS1 LQ4 LQ9 LS2 LS3 LS7 4.8L 5.3L 5.7L 6.0L, Replace BS40640
- Replace Part Number: BS40640.
- Fit for Chevrolet for GMC for Hummer for Pontiac for Saab for Isuzu 4.8L 5.3L 5.7L 6.0L.
- The gasket greatly prevent motor oil from leaking out as it travels around the camshafts, rockers and valves.
- Please check the description and compatibility chart before your purchasing.
$15.18
Bar's Leaks MS-1 Main Seal Motor Oil Leak Repair, 32 fl. Oz.
- Safe and easy to use, and works quickly
- Best stop leak formula money can Buy
- Synthetic blend, for all engines
- Repair leaking front and rear main seals
- Stop cam and timing seal leaks
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Last update on 2025-05-03 / Affiliate links / Images from Amazon Product Advertising API