Hummer H3 Front Crankshaft Seal Replacement at your home or office.

Our mobile mechanics offer services 7 days a week. Upfront and transparent pricing.

Estimate price near me

Service Location

Customer Ratings

(192)

Included for free with this service

Online Booking

Mechanic comes to you

12-month / 12k-mile warranty

Free 50 point safety inspection

Our certified mobile mechanics can come to your home or office 7 days a week between 7 AM and 9 PM.

Customer Ratings

(192)

Front Crankshaft Seal Replacement Service

How much does a Front Crankshaft Seal Replacement cost?

On average, the cost for a Hummer H3 Front Crankshaft Seal Replacement is $391 with $41 for parts and $350 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2009 Hummer H3L5-3.7LService typeFront Crankshaft Seal ReplacementEstimate$469.94Shop/Dealer Price$499.55 - $568.13
2010 Hummer H3V8-5.3LService typeFront Crankshaft Seal ReplacementEstimate$1120.55Shop/Dealer Price$1158.04 - $1241.63
2008 Hummer H3L5-3.7LService typeFront Crankshaft Seal ReplacementEstimate$447.42Shop/Dealer Price$472.67 - $537.99
2006 Hummer H3L5-3.5LService typeFront Crankshaft Seal ReplacementEstimate$447.42Shop/Dealer Price$472.67 - $537.98
2008 Hummer H3V8-5.3LService typeFront Crankshaft Seal ReplacementEstimate$1120.55Shop/Dealer Price$1168.52 - $1259.98
2009 Hummer H3V8-5.3LService typeFront Crankshaft Seal ReplacementEstimate$1120.55Shop/Dealer Price$1159.19 - $1243.65
2010 Hummer H3L5-3.7LService typeFront Crankshaft Seal ReplacementEstimate$447.42Shop/Dealer Price$472.71 - $538.05
2007 Hummer H3L5-3.7LService typeFront Crankshaft Seal ReplacementEstimate$447.42Shop/Dealer Price$472.67 - $537.98
Show example Hummer H3 Front Crankshaft Seal Replacement prices

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.

Fast and easy service at your home or office

Backed by 12-month, 12.000-mile guarantee


Meet some of our expert Hummer mechanics

Real customer reviews from Hummer owners like you.

Excellent Rating

(192)

Rating Summary
180
5
2
0
5
180
5
2
0
5

Peter

44 years of experience
1397 reviews
Peter
44 years of experience
Hummer H3 L5-3.5L - Oil Change - Glendale, Arizona
Pete was awesome! Called to let me know he had arrived. He took care of my truck quickly and efficiently. He was on time, communicated very well, and got the job done! For what more could I ask? Thanks Pete!

Maurice

22 years of experience
39 reviews
Maurice
22 years of experience
Hummer H3 V8-5.3L - Serpentine/Drive Belt - Mount Pleasant, South Carolina
I was hesitant to use this service...now, I've found my new mechanic. What a fantastic service.

Edmar

23 years of experience
246 reviews
Edmar
23 years of experience
Hummer H3 L5-3.7L - Window Motor / Regulator Assembly Replacement (Passenger Side Rear) - Plano, Texas
We had never had a mechanic come to our home before and the experience was wonderful. Edmar was so gracious and so knowledgeable and we will definitely call him back when we need another mechanic.

Robert

21 years of experience
1307 reviews
Robert
21 years of experience
Hummer H3 L5-3.5L - Serpentine/Drive Belt - Denver, Colorado
Robert knows his stuff. Arrived early and right to work. I am so glad I found this service and look forward to referring it and Robert.

Excellent Rating

(192)

Rating Summary
180
5
2
0
5
180
5
2
0
5
Number of Hummer H3 services completed
2112+
services done by our mechanics
TOTAL NUMBER OF EXPERT Hummer MECHANICS
200+
experts on our platform

Recent articles & questions

The Most and Least Expensive Cars to Own
Car value depends on purchase price, maintenance costs, and selling price. The Toyota Yaris, a discontinued model, costed $8000 less than in 2012.
How to Troubleshoot Car Overheating Causes
Car overheating can be caused by low coolant, a faulty radiator fans, a broken serpentine belt, or a stuck thermostat. Stop driving an overheated car.
How to Adjust a Parking Brake Shoe
Before you begin, it’s important to be familiar with your specific parking brake (https://www.yourmechanic.com/services/parking-brake-won-t-engage-inspection) system. While all systems accomplish the same...

Chirping noise when accelerating...usually right when you accelerate from a stop. 2011 grand Cherokee limited.

This noise is sometimes due to faults with either the serpentine drive belt and/or any of the belt driven accessories or pulleys. If any of the latter are the cause, such can be conclusively determined by simply disconnecting the drive...

car ran out of gas then i put some gas in it but now it wont start?

You will need to have the fuel pressure tested to see if the fuel pump in the fuel tank has failed. You may not actually ran out of fuel but the pump failed and stopped pumping. Have pressure tested and...

I have a 2014 genesis coupe 2.0t, in low rpms I have boost, when I step on it hard not boost, and it goes into a limp mode after

Depending on the cold air intake, you may be affecting the readings from the mass air flow sensor, which may be causing the motor to stumble when pushing for more boost as you describe. The mass air flow sensor (https://www.yourmechanic.com/services/mass-airflow-sensor-replacement)...

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1 (855) 347-2779 · hi@yourmechanic.com