10 best automotive replacement main seals
Automotive replacement main seals are critical components in a vehicle's engine that help prevent oil and other fluids from leaking out and contaminating the engine or the environment. These seals are essential for maintaining the proper function and longevity of the engine. Here are some key points about automotive replacement main seals:
Purpose: The primary function of a main seal is to prevent oil leaks from the engine's crankshaft and other rotating components. It seals the gap between the engine block and the crankshaft to keep oil inside the engine and maintain proper lubrication.
Location: Main seals are typically located at the rear of the engine, where the crankshaft extends out of the engine block. In some vehicles, there may also be front main seals to seal the front of the crankshaft.
Types: There are two main types of main seals - rope seals and lip seals. Rope seals are made of braided or twisted material and fit into a groove in the main bearing cap. Lip seals are made of rubber or synthetic materials and have a lip that contacts the crankshaft.
Materials: Main seals are typically made of high-quality materials, such as rubber, silicone, or Viton, to ensure they can withstand the high temperatures and pressures within the engine.
Replacement: Over time, main seals can wear out and develop leaks. When this happens, it is essential to replace them promptly to prevent oil loss and potential engine damage. Replacement main seals are available as standalone parts or as part of an engine gasket kit.
Professional Installation: Replacing a main seal can be a complex and labor-intensive task that often requires special tools and knowledge.It is recommended to have a qualified mechanic or technician perform the replacement to ensure it is done correctly.
Symptoms of a Failing Main Seal: Signs of a failing main seal include oil leaks from the rear of the engine, low oil levels, excessive oil consumption, and engine overheating due to insufficient lubrication. If you notice any of these symptoms, it's crucial to address the issue promptly.
Maintenance: Regular engine maintenance, such as oil changes and inspections, can help detect main seal issues early and prevent more extensive engine damage.
Quality Matters: When purchasing replacement main seals, it's essential to choose high-quality, OEM (Original Equipment Manufacturer) or aftermarket parts from reputable manufacturers to ensure proper sealing and durability.
In summary, automotive replacement main seals play a crucial role in maintaining the integrity and functionality of a vehicle's engine by preventing oil leaks. Proper maintenance and timely replacement of worn-out seals are essential to keep the engine running smoothly and prevent costly repairs.
Below you can find our editor's choice of the best automotive replacement main seals on the market
Fel-Pro BS 40644 Rear Engine Main Seal Set
Fel-Pro
Product description
Fel-Pro gaskets offers 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust.
- Rear main bearing oil seal installation set
- Application specific design to ensure a perfect fit
- Meets or exceeds all original equipment specifications
- Engineered and manufactured specifically for repair applications
- Unsurpassed quality you can trust
User questions & answers
| Question: | Is this the same "ford f4az-6701-a crankshaft oil seal assembly" for a f150 1998 4wd |
| Answer: | If it has a 5.0 liter engine it will fit |
| Question: | This comes with a rear main seal, sleeve, and installation tool? So there are 3 items |
| Answer: | Thank you for your inquiry. The Fel Pro BS40644 comes with a seal with a installation sleeve installed in the seal to help get the seal on to the back of the crankshaft, once the seal is on the crankshaft it can be discarded. |
| Question: | Will this fit a 2000 mustang gt 4.6l with manual trans |
| Answer: | Not sure. It fit my 86 302 |
| Question: | Where you able to install this without dropong the tranny |
| Answer: | You can remove the transmission mount and slide the transmission back about 6 inches because the flywheel has to come off but it's far less hassle to just carefully remove the transmission entirely |
Fel-Pro BS 40612 Rear Engine Main Seal Set
Fel-Pro
Product description
Fel-Pro gaskets offers 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust.
- Rear main bearing oil seal installation set
- Application specific design to ensure a perfect fit
- Meets or exceeds all original equipment specifications
- Engineered and manufactured specifically for repair applications
- Unsurpassed quality you can trust
User questions & answers
| Question: | Amazon says "does not fit" by 2004 tj rubicon 4.0l straight six. are they wrong? any alternate part |
| Answer: | I don't think it will fit, you should try a Fel-Pro BS40183 |
| Question: | This product work in Grand Cherokee Laredo |
| Answer: | If it is a 4.0, yes |
| Question: | This product work in grand cherokee laredo 2002 engine 4.0 6l |
| Answer: | Yes, only Main difference is the Sensor on the Head for Coolant Temperature |
| Question: | Will this work on 94 jeep cherokee sport inline 6 4.0l |
| Answer: | Yes |
Fel-Pro BS 40694 Rear Engine Main Seal Set
Fel-Pro
Product description
Fel-Pro gaskets offers 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust.
- Rear main bearing oil seal installation set
- Application specific design to ensure a perfect fit
- Meets or exceeds all original equipment specifications
- Engineered and manufactured specifically for repair applications
- Unsurpassed quality you can trust
Fel-Pro BS 40737 Rear Main Seal Set
Fel-Pro
Product description
Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust.
- Application specific design to ensure a perfect fit
- Meets or exceeds all original equipment specifications
- Engineered and manufactured specifically for repair applications
- Unsurpassed quality you can trust
- Validated for fit, form, and function
Fel-Pro BS 40685 Rear Engine Main Seal Set
Fel-Pro
Product description
Fel-Pro gaskets offers 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust.
- Rear main bearing oil seal installation set
- Application specific design to ensure a perfect fit
- Meets or exceeds all original equipment specifications
- Engineered and manufactured specifically for repair applications
- Unsurpassed quality you can trust
User questions & answers
| Question: | Fit acura TL engine |
| Answer: | No this fits honda pilot |
ACDelco 8792S Advantage Oil Seals
Product description
ACDelco Advantage Oil Seals is an economical replacement component for one or more of the following vehicle systems: engine - mechanical, automatic transmission/transaxle, manual drivetrain and axles, and/or steering and suspension. This dependable aftermarket seals offers quality at a competitive price.
- Dependable replacement
- Economically priced
- Provides the performance you expect
- Country of Origin : Taiwan
Fel-Pro BS 40646 Rear Engine Main Seal Set
Fel-Pro
Product description
Fel-Pro gaskets offers 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust.
- Rear main bearing oil seal installation set
- Application specific design to ensure a perfect fit
- Meets or exceeds all original equipment specifications
- Engineered and manufactured specifically for repair applications
- Unsurpassed quality you can trust
Fel-Pro BS 40674 Rear Engine Main Seal Set
Fel-Pro
Product description
Fel-Pro gaskets offers 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust.
- Rear main bearing oil seal installation set
- Application specific design to ensure a perfect fit
- Meets or exceeds all original equipment specifications
- Engineered and manufactured specifically for repair applications
- Unsurpassed quality you can trust
User questions & answers
| Question: | Does this product work on a 99 Toyota 4 runner 6 cylinder 3.4 liter 4 wheel drive |
| Answer: | Yes it should. Both the 3.0 and 3.4 in those years share the same part numbers. |
GM Parts 12554312 Rear Main Housing Seal for Small Block Chevy
GM Performance Parts
Product description
LT-1 Rear Main Seal Housing
- Package dimensions: 6.5 " L x 7.7 " W x 1.4 " H
- Package quantity: 1
- Product type: Auto Part
- Country of Origing: United States
User questions & answers
| Question: | Does this come with the gaskets necessary or do I also need to order those |
| Answer: | It has the rubber seal in it already. |
Fel-Pro BS 40603 Rear Engine Main Seal Set
Fel-Pro
Product description
Fel-Pro gaskets offers 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust.
- Rear main bearing oil seal installation set
- Application specific design to ensure a perfect fit
- Meets or exceeds all original equipment specifications
- Engineered and manufactured specifically for repair applications
- Unsurpassed quality you can trust
User questions & answers
| Question: | Is this seal the on behind the flywheel? Manual transmission 1993 geo tracker. I am changing out the flywheel, pressure plate, clutch etc. Thanks |
| Answer: | I have a 95 tracker and yes it was behind the flywheel so im sure the 93 should b as well. |
Latest Reviews
View all
Macbook Covers
- Updated: 21.06.2023
- Read reviews
Portable Manual Scoreboards
- Updated: 07.01.2023
- Read reviews
Hip Hop Posters
- Updated: 28.01.2023
- Read reviews
Mirror For Pc Monitors
- Updated: 11.01.2023
- Read reviews
Inkjet Photo Printers
- Updated: 06.02.2023
- Read reviews