Mercedes-Benz S350 Valve Cover Gasket Replacement Costs

Estimate price near me

Service Location

Customer Ratings

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.

See availability

Customer Ratings

Valve Cover Gasket Replacement Service

How much does a Valve Cover Gasket Replacement cost?

On average, the cost for a Mercedes-Benz S350 Valve Cover Gasket Replacement is $240 with $30 for parts and $210 for labor. Prices may vary depending on your location.

Car	Service	Estimate	Shop/Dealer Price
1995 Mercedes-Benz S350L6-3.4L Turbo Diesel	Service typeValve Cover Gasket Replacement	Estimate$292.98	Shop/Dealer Price$317.55 - $370.00
2006 Mercedes-Benz S350V6-3.7L	Service typeValve Cover Gasket Replacement	Estimate$677.95	Shop/Dealer Price$747.57 - $934.78
2013 Mercedes-Benz S350V6-3.0L Turbo Diesel	Service typeValve Cover Gasket Replacement	Estimate$1530.93	Shop/Dealer Price$1611.14 - $1785.16
2012 Mercedes-Benz S350V6-3.0L Turbo Diesel	Service typeValve Cover Gasket Replacement	Estimate$1530.93	Shop/Dealer Price$1611.12 - $1785.12
1994 Mercedes-Benz S350L6-3.4L Turbo Diesel	Service typeValve Cover Gasket Replacement	Estimate$279.47	Shop/Dealer Price$303.33 - $355.25

Show example Mercedes-Benz S350 Valve Cover Gasket Replacement prices

What is a valve cover gasket and how does it work?

Each cylinder head on your car’s engine has an aluminum or plastic valve cover bolted to it. Between this valve cover and the cylinder head, there is a gasket that keeps engine oil from leaking out. The valve cover bolts keep the gasket compressed, thus preventing leaks. Over time the gasket becomes brittle from the engine’s heat or the bolts loosen, creating an engine oil leak.

When to consider replacing a valve cover gasket?

Look for these signs of oil leakage at the valve cover gasket:

Oil seepage or dripping. Should the joint between the valve cover and the cylinder head fail, oil often becomes visible on the valve cover or cylinder heads. Usually, the oil will attract and hold dirt.
Oil accumulating inside the spark plug well. The spark plug tube seals are part of the valve cover sealing system. If the tube seals are leaking, you will see oil on the spark plugs or wires. The valve cover gasket and tube seals are all replaced at one time if either fails.
Oil leakage at the rubber grommets. The bolts holding the valve cover to the cylinder head sometimes have rubber grommet seals under the bolt heads. If these seals are leaking, you will see oil seepage around the bolt heads.

How do mechanics replace a valve cover gasket?

Remove engine cover. Some engines have plastic covers over the entire top. The plastic engine cover is removed to access the valve cover(s).
Remove components. On 4 cylinder engines, the valve cover is usually readily accessed once any electrical components and emission control tubing are removed, plus any accelerator linkages that might be in the way. On 6 or 8 cylinder engines, depending on which valve cover gasket is leaking, removal of the air intake plenum might be required, as well as additional steps.
Remove valve cover. Once the valve cover(s) is accessed, the cover retaining bolts are removed and the cover pulled off. The valve cover sealing surface is checked with a straight edge to be sure the cover is flat and thus reusable.
Install new gasket. The new valve cover gasket is applied along with new rubber grommets under the retaining bolt heads. If there are spark plug tube seals, these are replaced as well. In some applications, oil resistant RTV (room temperature vulcanization) sealant must be applied to specific segments of the sealing surface, along with the new gasket, to ensure a complete and effective seal. The cover is bolted back on, using a calibrated inch pound torque wrench, and all other components are restored to their original position.
Check for leaks. Finally, the car engine is run and a visual check is made for oil leaks.

Is it safe to drive with a valve cover gasket problem?

Yes, as long as the amount of oil leaking is small, and there is no leak onto hot engine parts such as the exhaust manifold, it is safe to drive your car until you have an opportunity to fix it.

If you notice oil leaking on to the ground beneath your car after it is parked, you do not have a small leak, and it needs to be found and repaired as soon as possible. Any leak, of course, means your oil level is dropping as you drive the car. If you have a leak, be sure to check your oil more frequently than usual so you do not run low on oil and damage the engine.

When replacing a valve cover gasket keep in mind:

The mechanical components of a car engine will typically outlive the gaskets used to seal the engine. However, many of these gaskets, including the valve cover gaskets, are relatively easy to replace.
Never add stop leak type products to engine oil or other vehicle fluids. Not only are these materials not approved or specified by the original equipment manufacturers, but they also can create additional problems that may be costly to repair.
Often, if a car is old enough to have a valve cover oil leak, there will be oil leaks elsewhere on the engine, so you should request a complete leak inspection. It may be more cost effective to repair multiple leaks during one service call.
Often, the PCV (Positive Crankcase Ventilation) valve is inserted into a rubber grommet in one of the valve covers. An old rubber grommet is a potential leak source, as well as connections to the PCV valve. These components should be inspected and considered for replacement while there is access to the valve cover.

Fast and easy service at your home or office

Backed by 12-month, 12.000-mile guarantee

Meet some of our expert Mercedes-Benz mechanics

Real customer reviews from Mercedes-Benz owners like you.

Excellent Rating

(6)

Rating Summary

5

0

0

0

1

5

0

0

0

1

SEE REVIEWS NEAR ME

Rigoberto

12 years of experience

739 reviews

Request Rigoberto

Rigoberto

12 years of experience

Request Rigoberto

by Brad

Mercedes-Benz S350 V6-3.7L - Battery - Chicago, Illinois

The experience was great! Very professional, prompt, courteous and knowledgable. I will be a return customer. Sincerely, Brad White

Andrian

33 years of experience

185 reviews

Request Andrian

Andrian

33 years of experience

Request Andrian

by Jadine

Mercedes-Benz S350 V6-3.7L - Car is not starting - Fort Lauderdale, Florida

He took the time to thoroughly assess the condition of my vehicle, explained his findings and discussed possible options and next steps. I never felt pressured or like he was trying to upsell me. He is articulate, knowledgeable, polite and extremely honest. I recommend him highly and hope I have the opportunity to work with him in the future.

Mark

42 years of experience

77 reviews

Mark

42 years of experience

by Al

Mercedes-Benz S350 V6-3.7L - Serpentine/Drive Belt - Alpharetta, Georgia

Fixed my car. Nice guy. A+

Omar

13 years of experience

287 reviews

Omar

13 years of experience

by Jadine

Mercedes-Benz S350 V6-3.7L - Brake Pads Replacement (Front, Rear) - Fort Lauderdale, Florida

He was on time, transparent, extremely communicative about the process and procedures. Polite and extremely respectful.

Excellent Rating

(6)

Rating Summary

5

0

0

0

1

5

0

0

0

1

SEE REVIEWS NEAR ME

Recent articles & questions

How to Replace a Car Track Bar

Replacing a track bar involves lifting the car in the air and using a wrench to tighten the bar at the correct torque specification.

How Long Does a Clutch Slave Cylinder Last?

The The clutch slave cylinder is located on the inside or outside of the transmission. If the slave cylinder is mounted on the outside of the transmission, it is normally attached by two bolts. Every time hydraulic pressure is applied,...

2012 Nissan Rogue vs. 2012 Ford Escape: Which One Should I Buy?

Sport Utility Vehicles (SUVs) use the chassis of a truck to provide superior structure, with a larger size and often poor gas mileage. While that isn’t always true, SUVs have a raised ground clearance and are generally meant to haul...

Transmission

This may be a sign of low transmission fluid (https://www.yourmechanic.com/services/transmission-fluid-service) or a faulty transmission control solenoid. As you know, automatic transmissions use pressurized hydraulic fluid to change gears. Every time a gear change is required, the car's computer activates a...

P1717 check engine light code on Acura TL type s 07

Hi there. This OBD-II code pertains to the transmission selector range switch. This switch tells the transmission what gear you are selecting. This code can be induced if the battery voltage got below 11 volts. The solution is to either...

I am having trouble starting my 2007 Dodge Charger and it does not have good acceleration

Hello. There are a lot of things that can cause this on your vehicle. I would usually start by scanning the computer for any codes. If there are codes set it can help to find the issue. If there are...

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 (844) 997-3624 · hi@yourmechanic.com