What is the Front Crankshaft Seal all about?
\n\n
A number of mechanisms must work together to make your vehicle move forward. One of the most important is the crankshaft, which converts rotary into linear motion; i.e., it transforms the force created by the engine's pistons moving up and down into a force that moves in a circular motion that causes a car\u2019s wheel to turn. Enclosed in what\u2019s called a crankcase\u2014the largest cavity in the engine block, just below the cylinders\u2014the crankshaft must be completely lubricated, essentially submerged in oil, to spin nearly friction-free and do its job properly.
\n\n
Consequently, there are seals located at either end of the crankshaft that allow it to spin freely and keep engine oil from escaping the engine block, as well as prevent contaminants and other debris from entering and causing damage to the mechanism. Since there are two ends of the crankshaft, there are two types of seals: the front crankshaft seal and the rear crankshaft seal, also known as the front main and rear main seals.
\n
","articleDesc2":"
Keep in mind:
\n\n
\n- Loss of oil will eventually cause serious internal engine damage.
\n- Inspect the sealing surface of the crankshaft or the crankshaft pulley (depending on the engine design) for damage when replacing the crankshaft seal.
\n- Oil degrades rubber components.
\n
\n\n
How it's done:
\n\n
\n- The vehicle is raised and supported on jack stands
\n- The crankshaft damper and timing belt is removed
\n- The crankshaft seal is removed and a new one installed
\n- The timing belt and cover along with crankshaft damper is reinstalled
\n- The engine accessory belts are installed and the vehicle is lowered off of the jack stands
\n
\n\n
Our recommendation:
\n\n
One of the most important parts of your car, crankshaft seals are typically made from a durable material, such as a synthetic rubber or silicone, designed to handle the extreme pressure and temperatures as well as the caustic chemicals in your engine oil. Because they are exposed to such abuse, main seals are subject to a lot of wear and tear. And whether you are talking a front or rear main seal, replacement is the only cure when one malfunctions.
\n\n
The good news is that the seals are relatively inexpensive components. The bad news is that neither is easy to replace.
\n\n
Front seal: The front seal is located behind the main pulley that drives all the belts, which is, of course, always spinning. The main pulley throws any leaking oil out in a big circle. It can get thrown up on the alternator, steering pump, belts, in short anything attached to the front of the engine and cause a real mess and eventually some serious damage. Consequently, it has to be removed along with many of the components attached to the front of the block to replace the front main seal.
\n\n
Rear seal: The rear crankshaft seal is placed along with the transmission; therefore, the process of replacing it requires the removal of transmission, as well as the clutch and flywheel assembly. This is a very involved job.
\n\n
What common symptoms indicate you may need to replace the Front Crankshaft Seal?
\n\n
\n- Oil leaking from the front crank pulley.
\n- Oil dripping from the bottom of the clutch housing, where the block and transmission meet.
\n- Clutch slip caused by oil spraying on the clutch.
\n
\n\n
How important is this service?
\n\n
Letting either crankshaft seal continue to leak can be detrimental to your vehicle\u2019s continued operation. Besides the maladies caused by driving around with little to no oil flowing in the engine, the faulty seal will be spread oil through the engine bay and undercarriage of your car as you drive, a mess that is difficult to clean up and can be a fire hazard. Replacing is better addressed sooner than later.
\n
"},"reviewsAndRatings":{"reviewsData":{"make":null,"model":null,"jid":481,"city_id":null,"state_id":null,"review_count":4,"mechanics":[{"id":2049584,"name":"Rohon","login":"rohon","mech_location":"Port Saint Lucie, FL","experience":48,"avatar_url":"https://res.cloudinary.com/yourmechanic/image/upload/dpr_auto,f_auto,g_face,q_auto/v1/mechanic/avatar_images/1312955710342653859","avatar_path":"mechanic/avatar_images/1312955710342653859","profile_url":"/pro/rohon","average_rating":5,"ratings_count":64,"reviews":[{"rating":5,"content":"Rohan went above and beyond what was required of his work. \nHe was punctual, professional, cordial, and is the type of person you want around for a bbq or to hang out with. His years of service and knowledge is reflected in the quality of his workmanship. And my go to mechanic from here on.","author":"Edison","review_date":"2021-09-25T18:57:49-07:00","service_location":"Jupiter, Florida","year":"2013","make":"Mercedes-Benz","model":"C250","engine":"L4-1.8L Turbo","car":"2013 Mercedes-Benz C250 L4-1.8L Turbo","job":"Front Crankshaft Seal","job_id":481}]},{"id":560691,"name":"Matthew","login":"mlerman","mech_location":"Williamsburg, VA","experience":33,"avatar_url":"https://res.cloudinary.com/yourmechanic/image/upload/dpr_auto,f_auto,g_face,q_auto/v1/mechanic/avatar_images/9186620066350318590","avatar_path":"mechanic/avatar_images/9186620066350318590","profile_url":"/pro/mlerman","average_rating":5,"ratings_count":1222,"reviews":[{"rating":5,"content":"Matthew was very knowledgeable about the job and familiar with the type of truck I had. That was a plus. ","author":"Jamie","review_date":"2021-08-27T12:02:47-07:00","service_location":"Hampton, Virginia","year":"2005","make":"Cadillac","model":"Escalade","engine":"V8-6.0L","car":"2005 Cadillac Escalade V8-6.0L","job":"Front Crankshaft Seal Replacement","job_id":481}]},{"id":447624,"name":"Rusty","login":"rhigginbotham","mech_location":"Arlington, TX","experience":23,"avatar_url":"https://res.cloudinary.com/yourmechanic/image/upload/dpr_auto,f_auto,g_face,q_auto/v1/mechanic/avatar_images/12166676775197095965","avatar_path":"mechanic/avatar_images/12166676775197095965","profile_url":"/pro/rhigginbotham","average_rating":5,"ratings_count":514,"reviews":[{"rating":5,"content":"He was on time and performed great mechanic work. Inspected the car and gave general needed Mantiance suggestions and I have chosen to rebook with him on the needed Mantiance updates . ","author":"amanda","review_date":"2021-07-29T17:09:19-07:00","service_location":"Arlington, Texas","year":"2011","make":"Mini","model":"Cooper","engine":"L4-1.6L","car":"2011 Mini Cooper L4-1.6L","job":"Front Crankshaft Seal","job_id":481}]},{"id":1329915,"name":"Keven","login":"kcausby","mech_location":"Tacoma, WA","experience":7,"avatar_url":"https://res.cloudinary.com/yourmechanic/image/upload/dpr_auto,f_auto,g_face,q_auto/v1/mechanic/avatar_images/2968006038027977765","avatar_path":"mechanic/avatar_images/2968006038027977765","profile_url":"/pro/kcausby","average_rating":5,"ratings_count":122,"reviews":[{"rating":5,"content":"Smooth process! Keven knows his stuff, arrived on time, and is extremely easy going and fun to talk with. Finished the task faster than expected. A+","author":"Gamil","review_date":"2021-07-18T00:33:27-07:00","service_location":"Bellevue, Washington","year":"2004","make":"Mitsubishi","model":"Lancer","engine":"L4-2.0L","car":"2004 Mitsubishi Lancer L4-2.0L","job":"Front Crankshaft Seal Replacement","job_id":481}]}],"hide_description":null},"aggregateRating":{"jid":481,"extrapolated_service_count":2244,"rating_count":204,"rating":"4.8","count_1_star":5,"count_2_star":1,"count_3_star":3,"count_4_star":6,"count_5_star":189},"linkToReviewsPage":"/reviews/?mktg_jid=481","cityLinks":[{"title":"Front Crankshaft Seal Replacement In Banning, CA","url":"/services/front-crankshaft-seal-replacement/?city=banning-ca"},{"title":"Front Crankshaft Seal Replacement In Fairfield, CA","url":"/services/front-crankshaft-seal-replacement/?city=fairfield-ca"},{"title":"Front Crankshaft Seal Replacement In Laguna Woods, CA","url":"/services/front-crankshaft-seal-replacement/?city=laguna-woods-ca"},{"title":"Front Crankshaft Seal Replacement In Port Orange, FL","url":"/services/front-crankshaft-seal-replacement/?city=port-orange-fl"},{"title":"Front Crankshaft Seal Replacement In Fort Pierce, FL","url":"/services/front-crankshaft-seal-replacement/?city=fort-pierce-fl"},{"title":"Front Crankshaft Seal Replacement In Revere, MA","url":"/services/front-crankshaft-seal-replacement/?city=revere-ma"},{"title":"Front Crankshaft Seal Replacement In North Attleboro, MA","url":"/services/front-crankshaft-seal-replacement/?city=north-attleboro-ma"},{"title":"Front Crankshaft Seal Replacement In Warren, MI","url":"/services/front-crankshaft-seal-replacement/?city=warren-mi"},{"title":"Front Crankshaft Seal Replacement In Woodbridge, NJ","url":"/services/front-crankshaft-seal-replacement/?city=woodbridge-nj"},{"title":"Front Crankshaft Seal Replacement In Harrington Park, NJ","url":"/services/front-crankshaft-seal-replacement/?city=harrington-park-nj"},{"title":"Front Crankshaft Seal Replacement In Rockaway Park, NY","url":"/services/front-crankshaft-seal-replacement/?city=rockaway-park-ny"},{"title":"Front Crankshaft Seal Replacement In Commercial Point, OH","url":"/services/front-crankshaft-seal-replacement/?city=commercial-point-oh"},{"title":"Front Crankshaft Seal Replacement In Montgomery, TX","url":"/services/front-crankshaft-seal-replacement/?city=montgomery-tx"},{"title":"Front Crankshaft Seal Replacement In Missouri City, TX","url":"/services/front-crankshaft-seal-replacement/?city=missouri-city-tx"},{"title":"Front Crankshaft Seal Replacement In Renton, WA","url":"/services/front-crankshaft-seal-replacement/?city=renton-wa"}]},"repairPricingTableData":{"pricingData":[{"car":"2007|Mazda|CX-9|V6-3.5L","labor":12240,"parts":2098,"url":"/cars/0/0","estimate":"$344","partsCost":"$20.98","laborCost":"$322.96","savings":"11%","averageDealerPrice":"$386.48"},{"car":"2014|Toyota|Venza|L4-2.7L","labor":3600,"parts":2297,"url":"/cars/0/1","estimate":"$118","partsCost":"$22.97","laborCost":"$94.99","savings":"9%","averageDealerPrice":"$130.47"},{"car":"2006|Chevrolet|Cobalt|L4-2.2L","labor":5760,"parts":3615,"url":"/cars/0/0","estimate":"$188","partsCost":"$36.15","laborCost":"$151.98","savings":"9%","averageDealerPrice":"$208.15"},{"car":"2010|Audi|TT Quattro|L4-2.0L Turbo","labor":14400,"parts":35462,"url":"/cars/0/1","estimate":"$735","partsCost":"$354.62","laborCost":"$379.96","savings":"6%","averageDealerPrice":"$784.62"},{"car":"2008|Mercedes-Benz|ML320|V6-3.0L Turbo Diesel","labor":5400,"parts":1449,"url":"/cars/0/0","estimate":"$157","partsCost":"$14.49","laborCost":"$142.48","savings":"10%","averageDealerPrice":"$175.74"},{"car":"2009|Lexus|IS F|V8-5.0L","labor":16920,"parts":4593,"url":"/cars/0/0","estimate":"$492","partsCost":"$45.93","laborCost":"$446.45","savings":"10%","averageDealerPrice":"$551.18"}],"sidebarTitle":"Need a new Front Crankshaft Seal?","sidebarBody":"Get your Front Crankshaft Seal changed by a top-rated mechanic at the convenience of your home or office."},"seoData":{"metaData":{"service":{"itemType":"https://schema.org/Service","metaProps":[{"itemProp":"url","content":"//m.whoreclub.com/services/front-crankshaft-seal-replacement"},{"itemProp":"areaServed","content":"USA"},{"itemProp":"serviceType","content":"Mobile Car Repair"}]},"organization":{"itemType":"https://schema.org/Organization","metaProps":[{"itemProp":"name","content":"YourMechanic"},{"itemProp":"legalname","content":"YourMechanic"},{"itemProp":"logo","content":"//m.whoreclub.com/assets/ym-logo-straight.png"},{"itemProp":"telephone","content":"1 (855) 347-2779"},{"itemProp":"url","content":"//m.whoreclub.com"},{"itemProp":"areaServed","content":"USA"},{"itemProp":"address","content":null}]}}},"bookEngineState":{"quote":{"jobs":[{"id":481,"description":"Front Crankshaft Seal Replacement"}]}},"serviceMerchandiserUI":{"heading":"Front Crankshaft Seal Replacement at your home or office","isDiagnosticJob":false,"costRangeMin":10657,"costRangeMax":133648,"serviceRating":4.8,"totalRatings":204,"benefits":[{"title":"Online Booking"},{"title":"Mechanic comes to you"},{"title":"12-month / 12k-mile warranty"},{"title":"Free 50 point safety inspection"}],"notFixedOnMobile":false,"jobTitle":"Front Crankshaft Seal Replacement","cityName":null,"seoFriendlyHeading":"","seoFriendlyTitle":"","ctaTextTitle":"","navBarCities":[{"id":9232,"name":"Greenville","featured_on_homepage":true,"featured_on_navbar":true,"url":"city/greenville-sc","city_state":"Greenville, SC"},{"id":25324,"name":"Pasadena","featured_on_homepage":true,"featured_on_navbar":true,"url":"city/pasadena-tx","city_state":"Pasadena, TX"},{"id":10263,"name":"Orlando","featured_on_homepage":true,"featured_on_navbar":true,"url":"city/orlando-fl","city_state":"Orlando, FL"},{"id":8635,"name":"Charlotte","featured_on_homepage":true,"featured_on_navbar":true,"url":"city/charlotte-nc","city_state":"Charlotte, NC"},{"id":19657,"name":"Chicago","featured_on_homepage":true,"featured_on_navbar":true,"url":"city/chicago-il","city_state":"Chicago, IL"},{"id":25545,"name":"San Antonio","featured_on_homepage":true,"featured_on_navbar":true,"url":"city/san-antonio-tx","city_state":"San Antonio, TX"},{"id":24056,"name":"Austin","featured_on_homepage":true,"featured_on_navbar":true,"url":"city/austin-tx","city_state":"Austin, TX"},{"id":9514,"name":"Atlanta","featured_on_homepage":true,"featured_on_navbar":true,"url":"city/atlanta-ga","city_state":"Atlanta, GA"},{"id":10370,"name":"Tampa","featured_on_homepage":true,"featured_on_navbar":true,"url":"city/tampa-fl","city_state":"Tampa, FL"},{"id":6106,"name":"Washington","featured_on_homepage":true,"featured_on_navbar":true,"url":"city/washington-dc","city_state":"Washington, DC"},{"id":27890,"name":"Los Angeles","featured_on_homepage":true,"featured_on_navbar":true,"url":"city/los-angeles-ca","city_state":"Los Angeles, CA"},{"id":27167,"name":"Phoenix","featured_on_homepage":true,"featured_on_navbar":true,"url":"city/phoenix-az","city_state":"Phoenix, AZ"}]}}" data-trace="true" style="display: none">
