--- product_id: 296284720 title: "Bar's Leaks 1040-6PK Rear Main Seal Repair Concentrate - 16.9 oz, (Pack of 6)" brand: "bar's leaks" price: "¥53287" currency: JPY in_stock: true category: "Bar's Leaks" url: https://www.desertcart.jp/products/296284720-bars-leaks-1040-6pk-rear-main-seal-repair-concentrate-16 store_origin: JP region: Japan --- # Works with all fuel types Restores worn seals like new Seals multiple engine leaks Bar's Leaks 1040-6PK Rear Main Seal Repair Concentrate - 16.9 oz, (Pack of 6) **Brand:** bar's leaks **Price:** ¥53287 **Availability:** ✅ In Stock ## Summary > 🛢️ Stop leaks before they stop you – seal the deal with Bar’s Leaks! ## Quick Answers - **What is this?** Bar's Leaks 1040-6PK Rear Main Seal Repair Concentrate - 16.9 oz, (Pack of 6) by bar's leaks - **How much does it cost?** ¥53287 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/296284720-bars-leaks-1040-6pk-rear-main-seal-repair-concentrate-16) ## Best For - bar's leaks enthusiasts ## Why This Product - Trusted bar's leaks brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Synthetic Oil Friendly:** Compatible with all petroleum-based oils including high-mileage and synthetic blends for modern engines. - • **Multi-Leak Sealing Power:** Effectively seals rear main, timing cover, cam seals, O-rings, and gaskets—beyond conventional stop leaks. - • **Precision Dosage Control:** One 16.9 oz bottle treats up to 6 quarts of oil, perfect for cars, motorcycles, ATVs, and lawn equipment. - • **Seal Restoration Technology:** Revives hardened, dried, and worn seals to like-new condition, extending engine life. - • **Universal Fuel Compatibility:** Seamlessly works with gasoline, diesel, and turbocharged engines for ultimate versatility. ## Overview Bar's Leaks Rear Main Seal Repair Concentrate is a powerful, synthetic formula designed to stop and restore oil leaks in all vehicle types, including gasoline, diesel, and turbocharged engines. It targets rear main seals but also effectively seals timing covers, cam seals, O-rings, and gaskets. Compatible with all petroleum-based oils, this concentrate revitalizes worn seals to like-new condition, providing a cost-effective, easy-to-use solution for maintaining engine integrity and preventing costly repairs. ## Description Most rear main seal leaks are caused by a combination of normal wear in the crankshaft & seal and the drying, hardening and shrinking of the main seal. Bar’s Leaks® Rear Main Seal Repair restores the seal to like new condition and also contains additives to stop leaks in severely worn seals and crankshafts. Compatible with all petroleum based engines oils including high-mileage and synthetic. Works with ALL vehicle types including gasoline, diesel and turbocharged. Specifically designed to seal rear main leaks, but also works better than a conventional stop leak on all other leaks. This includes the timing cover seal, cam seals, O-Rings and other gaskets. ## Features - STOPS ALL OIL LEAKS: Works with ALL vehicle types including gasoline, diesel and turbocharged. - SEALS TIMING COVER, CAM SEAL, REAL MAIN LEAKS: Specifically designed to seal rear main leaks, but also works better than a conventional stop leak on all other leaks. This includes the timing cover seal, cam seals, O-Rings and other gaskets. - SEAL RESTORER: Bar’s Leaks Rear Main Seal Repair restores the seal to like new condition and also contains additives to stop leaks in severely worn seals and crankshafts. - SEAL POLYMER: Compatible with all petroleum based engines oils including high-mileage and synthetic. - DOSAGE: One bottle treats 4 to 6 quarts of oil. Larger systems use 1 bottle for every 5 quarts of oil capacity. For small engines including 4 cycle / stroke motorcycle, ATV, lawn mowers and other engines use approximately 3 to 4 ounces per quart of capacity. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00BYS6OD4 | | Best Sellers Rank | #315,267 in Car & Motorbike ( See Top 100 in Car & Motorbike ) #237 in Fillers, Adhesives & Sealants | | Brand Name | Bar's Leaks | | Compatible Material | petroleum based engines oils | | Container Type | Bottle | | Country of Origin | USA | | Customer Reviews | 4.2 4.2 out of 5 stars (3,013) | | Global Trade Identification Number | 10046087010409 | | Included Components | Bar's Leaks Rear Main Seal Repair (Pack of 6) | | Item Form | Liquid | | Item Type Name | Bar's Leaks Rear Main Seal Repair (Pack of 6) | | Liquid Volume | 16.9 Fluid Ounces | | Manufacturer | Bar's Leaks | | Material Type | Synthetic | | Model Number | 1040-6PK | | Number of Items | 6 | | Number of Packs | 6 | | Part Number | 1040-6PK | | Recommended Uses For Product | Automotive | | Specific Uses For Product | Prevent Corrosion | | Unit Count | 101.4 Fluid Ounces | | Warranty Description | No | ## Product Details - **Brand:** Bar's Leaks - **Liquid Volume:** 16.9 Fluid Ounces - **Material:** Synthetic - **Package Information:** Bottle - **Recommended Uses For Product:** Automotive ## Images ![Bar's Leaks 1040-6PK Rear Main Seal Repair Concentrate - 16.9 oz, (Pack of 6) - Image 1](https://m.media-amazon.com/images/I/51DEkReRjpL.jpg) ![Bar's Leaks 1040-6PK Rear Main Seal Repair Concentrate - 16.9 oz, (Pack of 6) - Image 2](https://m.media-amazon.com/images/I/41Bjmm37E+L.jpg) ![Bar's Leaks 1040-6PK Rear Main Seal Repair Concentrate - 16.9 oz, (Pack of 6) - Image 3](https://m.media-amazon.com/images/I/41lxD3cNvqL.jpg) ![Bar's Leaks 1040-6PK Rear Main Seal Repair Concentrate - 16.9 oz, (Pack of 6) - Image 4](https://m.media-amazon.com/images/I/41wb2BQ0M1L.jpg) ![Bar's Leaks 1040-6PK Rear Main Seal Repair Concentrate - 16.9 oz, (Pack of 6) - Image 5](https://m.media-amazon.com/images/I/41qMu0Fm3PL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: Is this safe for diesels, specifically the Duramax 6.6L?** A: Yes..... According to Bars Product, this is compatible with all engines and engine oils. **Q: Can you use this with synthetic oils** A: Yes, I have used it with synthetic oil with no issues. **Q: What it does with my other gasket that has not have a leak?** A: If I'm understanding your question correctly.... you would like to know what effect this has on gaskets that are not leaking? The answer is nothing..... Thank you Eric **Q: Is this safe to use with other gas additives such as seafoam, lucas?** A: Yes there is no problem. This gets poured into your oil crankcase not into your gasoline. Seafoam usually gets poured into your gas tank to clean injectors and cylinder walls sometimes you can put it in the crankcase just about 4 oz to clean junk this does not stop any leaks usually done 100 or 200 mi before an oil change. Lucas has many products some that are injector cleaners that go into the fuel tank some that are oil stabilizers or stop leaks or friction additives that go into your oil crankcase you can have Lucas oil additive/stop leak and bars leak in your oil crankcase they don't interfere with one another ## Frequently Bought Together - Bar's Leaks Rear Main Seal Repair (Pack of 6) - Bar's Leaks High Mileage Engine Repair-It, Pack of 4 - Bar's Leaks OS-1-4PK Seal Engine Oil Burning/Leak Repair - 16.9 oz, (Pack of 4) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/296284720-bars-leaks-1040-6pk-rear-main-seal-repair-concentrate-16](https://www.desertcart.jp/products/296284720-bars-leaks-1040-6pk-rear-main-seal-repair-concentrate-16) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-09-23*