Nissan 350Z Front Crankshaft Seal Replacement at your home or office.

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Front Crankshaft Seal Replacement Estimate for Nissan 350Z

Nissan 350Z Front Crankshaft Seal Replacement costs $200 on average.

CarServiceEstimateShop/Dealer Price
2003 Nissan 350ZV6-3.5LService typeFront Crankshaft Seal ReplacementEstimate$291.10Shop/Dealer Price$343.73 - $456.95
2004 Nissan 350ZV6-3.5LService typeFront Crankshaft Seal ReplacementEstimate$259.10Shop/Dealer Price$311.75 - $425.00
2005 Nissan 350ZV6-3.5LService typeFront Crankshaft Seal ReplacementEstimate$259.10Shop/Dealer Price$311.75 - $424.99
2008 Nissan 350ZV6-3.5LService typeFront Crankshaft Seal ReplacementEstimate$206.24Shop/Dealer Price$245.64 - $319.21
2009 Nissan 350ZV6-3.5LService typeFront Crankshaft Seal ReplacementEstimate$206.24Shop/Dealer Price$245.70 - $319.32
2007 Nissan 350ZV6-3.5LService typeFront Crankshaft Seal ReplacementEstimate$206.24Shop/Dealer Price$245.68 - $319.27
2006 Nissan 350ZV6-3.5LService typeFront Crankshaft Seal ReplacementEstimate$267.10Shop/Dealer Price$319.53 - $432.61
Show example Nissan 350Z Front Crankshaft Seal Replacement prices

Front Crankshaft Seal Replacement Service

What is the Front Crankshaft Seal all about?

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’s wheel to turn. Enclosed in what’s called a crankcase—the largest cavity in the engine block, just below the cylinders—the crankshaft must be completely lubricated, essentially submerged in oil, to spin nearly friction-free and do its job properly.

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.

Keep in mind:

  • Loss of oil will eventually cause serious internal engine damage.
  • Inspect the sealing surface of the crankshaft or the crankshaft pulley (depending on the engine design) for damage when replacing the crankshaft seal.
  • Oil degrades rubber components.

How it's done:

  • The vehicle is raised and supported on jack stands
  • The crankshaft damper and timing belt is removed
  • The crankshaft seal is removed and a new one installed
  • The timing belt and cover along with crankshaft damper is reinstalled
  • The engine accessory belts are installed and the vehicle is lowered off of the jack stands

Our recommendation:

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.

The good news is that the seals are relatively inexpensive components. The bad news is that neither is easy to replace.

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.

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.

What common symptoms indicate you may need to replace the Front Crankshaft Seal?

  • Oil leaking from the front crank pulley.
  • Oil dripping from the bottom of the clutch housing, where the block and transmission meet.
  • Clutch slip caused by oil spraying on the clutch.

How important is this service?

Letting either crankshaft seal continue to leak can be detrimental to your vehicle’s 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.

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Rating Summary
257
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257
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Mark

11 years of experience
349 reviews
Mark
11 years of experience
Nissan 350Z V6-3.5L - Electric Problems - Fremont, California
Mark Lenhart is great. He's knowledgeable, efficient and easy to talk with. After listening to my description and thoughts on the car being shut off suddenly right on the highway, he focused right away on the battery and it's the battery cables! I was relieved because I thought it's the car security system that shutoff my car. He proceeded to charge it and checked other related components such as the alternator and the belts, while educating me about them. He also told me about his experience with the car security system. I am now comfortable with my car performance from what I learned. The cost from YourMechanic is also reasonable. I definitely recommend Mark. Thanks, Mark.

Derrick

11 years of experience
161 reviews
Derrick
11 years of experience
Nissan 350Z V6-3.5L - Radiator - Alameda, California
Derrick was Very professional and on time. Appeared very knowledgeable.

Joe

43 years of experience
809 reviews
Joe
43 years of experience
Nissan 350Z V6-3.5L - Pre-purchase Car Inspection - Land O Lakes, Florida
good mechanic and very knowledgeable.

Charles

17 years of experience
176 reviews
Charles
17 years of experience
Nissan 350Z V6-3.5L - Power Steering Belt - Mountain View, California
Second time in a week getting some work done by Charles and he is very quick and detailed and gets the job done!

Excellent Rating

(277)

Rating Summary
257
10
2
4
4
257
10
2
4
4
Number of Nissan 350Z services completed
3047+
services done by our mechanics
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