Mercedes 420SEL Coolant Parts

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OEM
1986, 1987, 1988, 1989, 1990, 1991 Mercedes 420SEL
In Stock Status
In Stock Information Icon
Leaves warehouse within 1-2 business days.
$27.89
Reg
$29.05
List
$29.62
1986, 1987, 1988, 1989, 1990, 1991 Mercedes 420SEL
In Stock Status
In Stock Information Icon
Leaves warehouse within 1-2 business days.
$16.09
Reg
$16.76
List
$15.00
OEM
Please verify appearance, connection and temperature rating on existing part prior to ordering. Also need 007603-014102 sealing washer, please order separately. 1 per car.
1988, 1989, 1990, 1991 Mercedes 420SEL
In Stock Status
In Stock Information Icon
Leaves warehouse within 1-2 business days.
$19.69
Reg
$20.51
List
$44.50
1 per car.
1986, 1987, 1988, 1989, 1990, 1991 Mercedes 420SEL
In Stock Status
In Stock Information Icon
Leaves warehouse within 1-2 business days.
$10.69
Reg
$11.14
List
$28.50
Sold by the meter, usage as required. Black shiny hose from radiator cap outlet down side of radiator. 1 per car.
1986, 1987, 1988, 1989, 1990, 1991 Mercedes 420SEL
In Stock Status
In Stock Information Icon
Leaves warehouse within 1-2 business days.
$7.49
Reg
$7.80
List
$6.25
1 per car.
1986, 1987, 1988, 1989, 1990, 1991 Mercedes 420SEL
In Stock Status
In Stock Information Icon
Leaves warehouse within 1-2 business days.
$0.99
Reg
$1.03
List
$5.86
Early models without coolant level sensor also require 1265000084 plug kit.
1986, 1987, 1988, 1989, 1990, 1991 Mercedes 420SEL
In Stock Status
In Stock Information Icon
Leaves warehouse within 1-2 business days.
$38.99
Reg
$40.61
List
$38.50
Please verify appearance and pressure rating of cap installed on vehicle prior to ordering. 1 per car.
1986, 1987, 1988, 1989, 1990, 1991 Mercedes 420SEL
In Stock Status
In Stock Information Icon
Leaves warehouse within 1-2 business days.
$5.49
Reg
$5.72
List
$15.50
Replacement hose may be longer than required, please cut to length upon installation. 1 per car.
1986, 1987, 1988, 1989, 1990, 1991 Mercedes 420SEL
In Stock Status
In Stock Information Icon
Leaves warehouse within 1-2 business days.
$6.49
Reg
$6.76
List
$52.00
Kit includes plug, o-ring and circlip. Kit to plug lower hose outlet on expansion tank. 1 kit per car.
1986, 1987, 1988, 1989, 1990, 1991 Mercedes 420SEL
In Stock Status
In Stock Information Icon
Leaves warehouse within 1-2 business days.
$11.79
Reg
$12.28
List
$11.50
OEM
1986, 1987, 1988, 1989, 1990, 1991 Mercedes 420SEL
In Stock Status
In Stock Information Icon
Leaves warehouse within 1-2 business days.
$17.99
Reg
$18.74
List
$80.00
OEM
1 per car.
1986, 1987, 1988, 1989, 1990, 1991 Mercedes 420SEL
In Stock Status
In Stock Information Icon
Leaves warehouse within 1-2 business days.
$23.19
Reg
$24.16
List
$38.50
1986, 1987, 1988, 1989, 1990, 1991 Mercedes 420SEL
In Stock Status
In Stock Information Icon
Leaves warehouse within 1-2 business days.
$7.49
Reg
$7.80
List
$35.00
OEM
1986, 1987, 1988, 1989, 1990, 1991 Mercedes 420SEL
In Stock Status
In Stock Information Icon
Leaves warehouse within 1-2 business days.
$8.59
Reg
$8.95
List
$15.50
1 per car.
1986, 1987, 1988, 1989, 1990, 1991 Mercedes 420SEL
Low Stock Status
Low Stock Information Icon
Leaves warehouse within 1-2 business days, if still available when processed.
$18.29
Reg
$19.05
List
$17.00
1986, 1987, 1988, 1989, 1990, 1991 Mercedes 420SEL
In Stock Status
In Stock Information Icon
Leaves warehouse within 1-2 business days.
$9.97
Reg
$10.39
List
$28.50
FREE SHIPPING
Early models without coolant level sensor also require 1265000084 plug kit.
1986, 1987, 1988, 1989, 1990, 1991 Mercedes 420SEL
In Stock Status
In Stock Information Icon
Leaves warehouse within 1-2 business days.
$51.99
Reg
$54.16
List
$38.50
OEM FREE SHIPPING
1986, 1987, 1988 Mercedes 420SEL
In Stock Status
In Stock Information Icon
Leaves warehouse within 1-2 business days.
$45.99
Reg
$47.91
List
$95.00
OEM
1 per car.
1986, 1987, 1988, 1989, 1990, 1991 Mercedes 420SEL
In Stock Status
In Stock Information Icon
Leaves warehouse within 1-2 business days.
$2.19
Reg
$2.28
List
$2.20
1 per car.
1986, 1987, 1988, 1989, 1990, 1991 Mercedes 420SEL
Low Stock Status
Low Stock Information Icon
Leaves warehouse within 1-2 business days, if still available when processed.
$13.99
Reg
$14.57
List
$13.00

The average price of a Mercedes 420SEL coolant is between $0.99 and $51.99.

Mercedes 420SEL coolant is a type of fluid used to regulate the temperature of the engine and prevent it from overheating. It is a mixture of water and antifreeze that helps dissipate the heat generated by the engine and maintain a consistent operating temperature.

This coolant is important because it helps prolong the life of the engine by preventing it from overheating, which can cause damage to various components. It also protects against corrosion, rust, and other types of damage that can occur over time. Regular maintenance and replacement of the coolant are crucial for ensuring the proper functioning of the engine and preventing costly repairs.

Type of Coolant for Mercedes 420SEL

The Mercedes 420SEL coolant uses a coolant that meets the MB 325.0 specification, which is a blue-colored coolant. The specific brand and type of coolant can vary, but it should be compatible with this specification.

Mercedes 420SEL Coolant Capacity by Year

Year Range: 1986-1991

Engine Size: 4.2L

Coolant Capacity:

  • 1986-1990: 12.1 quarts (11.5 liters)
  • 1991: 13.7 quarts (13 liters)

How to Add Coolant to Your Mercedes 420SEL

  1. Make sure the engine is cool before adding coolant.
  2. Locate the coolant reservoir tank under the hood.
  3. Remove the reservoir cap carefully to avoid any hot steam or coolant escaping.
  4. Check the coolant level and add coolant as necessary up to the "Full" line.
  5. Use the correct type of coolant recommended in your owner's manual.
  6. Tighten the reservoir cap securely after adding the coolant.
  7. Start the engine and let it run for a few minutes. Monitor the temperature gauge to make sure the engine is not overheating.
  8. Recheck the coolant level after the engine has cooled down and add more if necessary.

It's important to keep the coolant level within the appropriate range to ensure optimal performance and prevent engine damage or failure. If you're not comfortable adding coolant yourself or are unsure about the process, consult a professional mechanic for assistance.


At AutohausAZ, our customers can experience a hassle-free shopping experience when looking for coolant for their Mercedes 420SEL coolant. Our vast selection of high-quality coolant options allows customers to easily find the right product to fit their needs. We take pride in our commitment to providing top-notch customer service and making sure our customers are satisfied with their purchase. Our knowledgeable staff is always available to assist customers with any questions or concerns they may have. In addition to offering competitive prices, we also offer a convenient online ordering process that can save customers time and effort. Shopping at AutohausAZ for Mercedes 420SEL coolant means customers can trust that they will receive great value, quality products, and exceptional service.

Auto Parts We Offer for Mercedes 420SEL