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Shop Mercedes Benz 420SEL Parts

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Direct Fit Horn - High Tone
Replacement
Part Number: REPC502504
Vehicle Info Required to Guarantee Fit
$16.44
Vehicle Fitment
  • 1986 - 1991 Mercedes Benz 420SEL Base 8 Cyl 4.2L
Product Details
Notes : High Tone, With Mounting Bracket, 2 Male Blade TerminalQuantity Sold : Sold individuallyWarranty : 1-year unlimited-mileage warranty
Direct Fit Horn - Low Tone
Replacement
Part Number: REPC502505
Vehicle Info Required to Guarantee Fit
$13.50
Vehicle Fitment
  • 1986 - 1991 Mercedes Benz 420SEL Base 8 Cyl 4.2L
Product Details
Notes : Low ToneQuantity Sold : Sold individuallyWarranty : 1-year unlimited-mileage warranty
Direct Fit Horn - Tone
Replacement
Part Number: SET-REPC502504-2
Vehicle Info Required to Guarantee Fit
$28.44
Vehicle Fitment
  • 1986 - 1991 Mercedes Benz 420SEL Base 8 Cyl 4.2L
Product Details
Components : (2) HornsQuantity Sold : Set of 2Warranty : 1-year unlimited-mileage warranty
Black Floor Mats
Husky Liners®
Part Number: H2152011
Vehicle Info Required to Guarantee Fit
$70.95
Vehicle Fitment
  • 1986 - 1991 Mercedes Benz 420SEL All Submodels All Engines
Product Details
Location : Second RowType : Flat Floor MatRow : Second or Third RowColor/Finish : BlackQuantity Sold : 2 PiecesWarranty : Lifetime Husky Liners limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Tan Floor Mats
Husky Liners®
Part Number: H2152013
Vehicle Info Required to Guarantee Fit
$70.95
Vehicle Fitment
  • 1986 - 1991 Mercedes Benz 420SEL Base 8 Cyl 4.2L
Product Details
Location : Second RowNotes : Covers humpType : Flat Floor MatRow : Second or Third RowColor/Finish : TanQuantity Sold : 2 PiecesWarranty : Lifetime Husky Liners limited warranty
Black Floor Mats, Front Row
Husky Liners®
Part Number: H2151091
Vehicle Info Required to Guarantee Fit
$70.95
Vehicle Fitment
  • 1986 - 1991 Mercedes Benz 420SEL All Submodels All Engines
Product Details
Location : Front RowType : Flat Floor MatRow : First RowColor/Finish : BlackQuantity Sold : 2 PiecesWarranty : Lifetime Husky Liners limited warranty
Gray Floor Mats
Husky Liners®
Part Number: H2152012
Vehicle Info Required to Guarantee Fit
$70.95
Vehicle Fitment
  • 1986 - 1991 Mercedes Benz 420SEL Base 8 Cyl 4.2L
Product Details
Location : Second RowNotes : Covers humpType : Flat Floor MatRow : Second or Third RowColor/Finish : GrayQuantity Sold : 2 PiecesWarranty : Lifetime Husky Liners limited warranty
Tan Floor Mats, Front Row
Husky Liners®
Part Number: H2151093
Vehicle Info Required to Guarantee Fit
$70.95
Vehicle Fitment
  • 1986 - 1991 Mercedes Benz 420SEL All Submodels All Engines
Product Details
Location : Front RowType : Flat Floor MatRow : First RowColor/Finish : TanQuantity Sold : 2 PiecesWarranty : Lifetime Husky Liners limited warranty
Fender - Front, Passenger Side
Replacement
Part Number: M110
Vehicle Info Required to Guarantee Fit
$56.61
Vehicle Fitment
  • 1986 - 1991 Mercedes Benz 420SEL Base 8 Cyl 4.2L
Product Details
Location : Front, Passenger SideRecommended Use : OE ReplacementMaterial : SteelColor/Finish : PrimedMolding Holes : With molding holesQuantity Sold : Sold individuallyReplaces OE Number : 1268812401Replaces Partslink Number : MB1241106Warranty : 1-year unlimited-mileage warranty
Fender - Front, Driver Side
Replacement
Part Number: M111
Vehicle Info Required to Guarantee Fit
$56.61
Vehicle Fitment
  • 1986 - 1991 Mercedes Benz 420SEL Base 8 Cyl 4.2L
Product Details
Location : Front, Driver SideRecommended Use : OE ReplacementMaterial : SteelColor/Finish : PrimedMolding Holes : With molding holesQuantity Sold : Sold individuallyReplaces OE Number : 1268812301Replaces Partslink Number : MB1240105Warranty : 1-year unlimited-mileage warranty
Fender - Front, Driver and Passenger Side
Replacement
Part Number: SET-M110
Vehicle Info Required to Guarantee Fit
$107.56
Vehicle Fitment
  • 1986 - 1991 Mercedes Benz 420SEL Base 8 Cyl 4.2L
Product Details
Location : Front, Driver And Passenger SideComponents : (2) FendersRecommended Use : OE ReplacementMaterial : SteelColor/Finish : PrimedMolding Holes : With molding holesQuantity Sold : Set of 2Replaces OE Number : 1268812301, 1268812401Replaces Partslink Number : MB1240105, MB1241106Warranty : 1-year unlimited-mileage warranty
Electric Fuel Pump Without Fuel Sending Unit
Replacement
Part Number: REPM314503
Vehicle Info Required to Guarantee Fit
$35.06
Vehicle Fitment
  • 1986 - 1991 Mercedes Benz 420SEL Base 8 Cyl 4.2L
Product Details
Notes : Fuel pump motor; Two Fuel Pumps May Be RequiredCondition : NewQuantity Sold : Sold individuallyRecommended Use : OE ReplacementOperation : ElectricFuel Sending Unit Included : Without Fuel Sending UnitPressure Sensor Included : Without Pressure SensorProduct Fit : Direct FitProng Connector : 1 electrical connector; 2-prong pin connectorReplaces OE Number : 0020918801Warranty : 1-year unlimited-mileage warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Electric Fuel Pump Without Fuel Sending Unit
Replacement
Part Number: SET-REPM314503-2
Vehicle Info Required to Guarantee Fit
$66.62
Vehicle Fitment
  • 1986 - 1991 Mercedes Benz 420SEL Base 8 Cyl 4.2L
Product Details
Notes : Fuel pump motor; Two Fuel Pumps May Be RequiredComponents : (2) Fuel PumpsCondition : NewQuantity Sold : Set of 2Recommended Use : OE ReplacementOperation : ElectricFuel Sending Unit Included : Without Fuel Sending UnitPressure Sensor Included : Without Pressure SensorProduct Fit : Direct FitProng Connector : 1 electrical connector; 2-prong pin connectorReplaces OE Number : 0020918801Warranty : 1-year unlimited-mileage warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Control Arm - Front, Driver Side, Upper
Dorman®
Part Number: RB520757
Vehicle Info Required to Guarantee Fit
$57.36
Vehicle Fitment
  • 1986 - 1991 Mercedes Benz 420SEL All Submodels All Engines
Product Details
Location : Front, Driver Side, UpperSeries : Dorman OE SolutionsAdjustability : Non-AdjustableMaterial : AluminumBall Joint Included : With ball joint(s)Bushing Included : With bushing(s)Quantity Sold : Sold individuallyRecommended Use : OE ReplacementInterchange Part Number : Mevotech GK9586, Mevotech MK9586, Moog CK9586, Moog K9586, Moog RK9586, Raybestos 502-1019Anticipated Ship Out Time : Same day - 1 business dayWarranty : Lifetime Dorman limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Carbon Black, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Control Arm - Front, Passenger Side Upper
Dorman®
Part Number: RB520758
Vehicle Info Required to Guarantee Fit
$57.36
Vehicle Fitment
  • 1986 - 1991 Mercedes Benz 420SEL All Submodels All Engines
Product Details
Location : Front, Passenger Side UpperSeries : Dorman OE SolutionsAdjustability : Non-AdjustableMaterial : AluminumBall Joint Included : With ball joint(s)Bushing Included : With bushing(s)Quantity Sold : Sold individuallyRecommended Use : OE ReplacementInterchange Part Number : Mevotech GK9588, Mevotech MK9588, Moog CK9588, Moog K9588, Moog RK9588, Raybestos 502-1020Anticipated Ship Out Time : Same day - 1 business dayWarranty : Lifetime Dorman limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Carbon Black, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Page 1 of 498 | Showing 1 - 15 of 7470 results

Mercedes Benz 420SEL Customer Reviews

Fits and works perfectly. Thanks!
Damian Mckeon
VERIFIED PURCHASER
Purchased on May 03, 2020
Completely satisfied.
Thomas Knapik
VERIFIED PURCHASER
Purchased on Apr 25, 2020
Black Floor Mats
Jun 10, 2019
Did not fit truck
The floor mats did not fit the truck it was supposed to fit. I had to cut them to fit around the frame of the front chairs.
Purchased on May 13, 2014

Mercedes Benz 420SEL Guides

Seven Fun Facts about the Mercedes-Benz 420SEL

  • Ever wondered what the SEL in the 420SEL actually means? SEL denotes the fact that the W126 model-variant had a long wheelbase. Meanwhile, the 420 SE had a short wheelbase while the 420SEC was a coupe.
  • In 1973, Mercedes-Benz began planning for its next S-Class generation that it codenamed "Project W126." It took more than six years of dreaming and designing and the 1970s oil crisis before the company debuted their initial lineup at the 1979 International Motor Show (IAA) in Frankfurt, Germany. The 420SEL was a part of this premiere lineup, as a long-wheelbase variant.

  • The M116 engine that powered up the Mercedes-Benz 420SEL was manufactured in Stuttgart-Bad Cannstatt. This German region also produced automotive legends such as Daimler, Maybach, Bosch, and Porsche, earning it the title of "The cradle of the automobile." Stuttgart residents have even gone as far as to call their city "Benztown."

  • While the 420SEL and its fellow W126 S-Class variants were being conceptualized in the 1970s, the oil crisis occurred and their engineers decided to make sure that their vehicles were fuel efficient. By the time it retired in the early 1990s, the 420SEL had an official combined MPG rating of 17 miles per gallon.

  • In 1991, the average American who drove 15,000 miles would have spent 1,279 USD on a year's worth of fuel for their Mercedes-Benz 420SEL. This was calculated according to a gas price of 1.45 USD per gallon and the vehicle's EPA Combined MPG of 17 miles per gallon.

  • True to the neo-noir comic series by Frank Miller, the Sin City movie version also featured a 1990 Mercedes-Benz 420SEL. One of the main characters, Marv, even commented "The Padre drove a Mercedes, or at least that's what they're passing off as a Mercedes these days. Modern cars, they all look like electric shavers."

  • Hollywood seems to love using the Mercedes-Benz 420SEL in its car chase sequences. Since its 1987 appearance in Tropical Heat, it has been featured in 10 movies and television series. On the big screen, its notable stunt performances could be seen in 1995's Crying Freeman, 1998's Lethal Weapon 4, and 1999's The Limey. Meanwhile, TV viewers enjoyed its appearances in series such as Top Gear, Tropical Heat, and Alias.

The Quirks of the Mercedes-Benz 420SEL

During the 1970s, Mercedes-Benz was scrambling to ensure that it remained the leader in luxury sedans by designing its next S-Class generation. The company wanted to create a model with an improved ride, better handling, and improved fuel efficiency. In 1979, it formally introduced the W126 and its model-variants at the International Motor Show in Frankfurt, Germany. One of these variants was the long-wheelbase 420 version known as the 420SEL.


Common W126 quirks

The 420SEL was just one of the model-variants of the W126 released by Mercedes-Benz in 1979. Its German engineering has made the W126 a classic S-Class model with a twelve-year production run. But, it has also acquired a few quirks that its owners have learned to deal with.

For instance, W126 owners know to close the rear vent during the winter because it will always blow cold air, even with the heater turned on. They also know that the bounce test isn't a good indicator of how worn out their car's shocks are since the W126 model-variants aren't as springy as sedans from other brands. Instead, they will examine the shocks for any leaks to know if they need to be replaced. Finally, they know that they need to regularly clean the contacts between the seats and window switches so that they work all the time. Otherwise, this switch will work at odd intervals.


Difficulty with cold starts

The Mercedes-Benz 420SEL itself has had an issue with its fuel distributor. It may sometimes refuse to start cold even if it will fire up with a little gas and some backfiring. Despite cleaning the cold start valve with a cleaning solution, the fuel distributor may still have a hard time cranking up.

To solve this, 420SEL drivers need to ensure that their overall fuel mixtures aren't too lean as this can give them some trouble starting. Then they need to make sure that the cold start valve is getting power and ground when the motor is being cranked. The valve only works for up to 10 seconds when the motor is cranked while its cold, so make sure that it isn't spraying fuel out instead.

FAQs—Mercedes Benz 420SEL

My Mercedes Benz 420SEL overheated twice yesterday, and I'm determined to prevent that from happening ever again. How can I make sure of that?

It is not unusual for cars with high mileage to suffer from overheating. This is due to the fact that the factory engine parts as well as that of the cooling system have all gone old already. When temperatures climb beyond the normal range set for a particular engine, for whatever reason, overheating can happen anytime. The main reason of overheating is the failure of the cooling system to absorb and dissipate the excess heat produced through combustion. It can be due to coolant leaks, poor air flow, slipping fan clutch, loose water pump impeller, defective radiator cap, inoperative thermostat, or deposit in the water jackets. Even if the defect is only one from among these, engine heat can choke up.

Regular maintenance should save you from the hassle brought by overheating. When you do the check on a religious basis, you will be able to anticipate problems. Subsequently, you will easily single out the cause and have a replacement come handy already. Also, never settle for substandard replacement parts for your engine to reach higher mileage.

How bad will overheating affect the engine? Are the effects still reversible?

Seasoned drivers can easily single out a problem when any signs arise, enabling them to immediately provide the solution. But because of lack of experience, newbies fall into the trap of having to handle problems caused by earlier problems, which eventually lead to more serious problems like overheating. The consequence starts from detonation, followed by rattling, pinging, and then losing power. When it continues to detonate, the vital engine parts such as the rings and bearings will begin to suffer damage. Pistons may also swell as temperature spikes up, subsequently scraping against the cylinders.

Ill effects of overheating can reach the exhaust valve, creating scuffs in their guides and finally to loss of compression. Furthermore, thermal stress can swell the parts that are made up of cast iron and aluminum, like the head. This results in blown head gasket and then coolant leak. The overhead cam can also seize and break. And, of course, since the cooling system is directly connected to the engine, the steam going through it can damage the hose and old radiators with plastic end tanks. When major engine damage is severe, costly engine repair is your sole hope.

How do I know when my Mercedes Benz 420SEL head gasket is leaking?

A leaky cylinder head gasket shows no visible external leaks, but you will be able to notice white steam in the exhaust upon restarting or when idling. To confirm any suspicion, you can diagnose the problem by pressure testing the cooling system or through the use of a block checker. The latter uses a cylinder that has a special blue colored leak detection liquid that will turn to green when it detects combustion gas in the coolant. Also know that the head gasket leaks when engine oil is mixed in the coolant and vice versa. When the problem is confirmed, do not settle with fixing the leak with a sealant. Have a replacement always handy, so you can immediately replace the damaged head gasket.

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