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1978 Mercedes Benz 240D Base Sedan 123.123 L4 2.4L

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Your Vehicle 1978 Mercedes Benz 240D Base Sedan 123.123 L4 2.4L
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1978 Mercedes Benz 240D Base Sedan 123.123 L4 2.4L Engine Cooling Parts

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Thermostat O-Ring

Must be replaced when you replace the thermostat 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
2802458
Mfg#:
159972348
Ships in 4 Business Days
ON SALE! SAVE 22%
$4.99

This product was last offered at the strikethrough price on
08-31-2026

$3.87 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Radiator Cap

2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
2801720
Mfg#:
1235010215
Ships in 4 Business Days
ON SALE!
$13.99

This product was last offered at the strikethrough price on
08-31-2026

$13.29 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Radiator Cap

ES#2747958 - 1235010215 - Radiator Cap - Used to maintain proper pressure and boiling point of your cooling system - Ruville - Mercedes Benz

Used to maintain proper pressure and boiling point of your cooling system

Brand:
Ruville - Corporate Logo
ES#:
2747958
Mfg#:
1235010215
Ships in 1-2 days
$7.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Radiator Hose

ES#1649578 - 1235011882 - Radiator Hose - Lower Hose - Genuine Mercedes Benz - Mercedes Benz

Lower Hose From Chassis: 110871 - Due To Multiple Chassis Splits, Please Confirm Fitment Before Ordering

Brand:
Genuine Mercedes Benz - Corporate Logo
ES#:
1649578
Mfg#:
1235011882
Ships in 4 Business Days
8% off MSRP

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$37.99

This product was last offered at the strikethrough price on
09-07-2026

$34.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Radiator Hose

ES#1649569 - 1235010082 - Radiator Hose - Upper Hose - Genuine Mercedes Benz - Mercedes Benz

Upper Hose From Chassis: 110871 - Due To Multiple Chassis Splits, Please Confirm Fitment Before Ordering

Brand:
Genuine Mercedes Benz - Corporate Logo
ES#:
1649569
Mfg#:
1235010082
Ships in 4 Business Days
8% off MSRP

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$23.99

This product was last offered at the strikethrough price on
09-07-2026

$21.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Auxiliary Fan Switch

212 Degrees F Located On Thermostat Housing

Brand:
Genuine Mercedes Benz - Corporate Logo
ES#:
1618845
Mfg#:
0065451424
Ships in 4 Business Days
5% off MSRP

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$56.00

This product was last offered at the strikethrough price on
09-07-2026

$52.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Water Pump Pulley

Does Not Include New Hardware Due To Multiple VIN Splits, Please Confirm Fitment Before Ordering

Brand:
Genuine Mercedes Benz - Corporate Logo
ES#:
1818523
Mfg#:
6172050610
Ships in 4 Business Days
5% off MSRP

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$56.00

This product was last offered at the strikethrough price on
08-04-2026

$52.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Temperature Sensor

ES#2636057 - 0055421017 - Coolant Temperature Sensor - One (1) Pole Terminal - Meyle - Mercedes Benz

One (1) Pole Terminal 5X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Meyle - Corporate Logo
ES#:
2636057
Mfg#:
0055421017
Ships on Sep 23, 2026
$11.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

o-ring

We Price Match - Give Us A Call or Chat!

Brand:
Febi - Corporate Logo
ES#:
2874094
Mfg#:
159972348
Special Order: No Guaranteed ETA
$2.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

radiator cap

ES#2879949 - 1235010215 - radiator cap - Vaico - Mercedes Benz

We Price Match - Give Us A Call or Chat!

Brand:
Vaico - Corporate Logo
ES#:
2879949
Mfg#:
1235010215
Special Order: No Guaranteed ETA
$13.99 USD
This product is lifetime replacement eligible Lifetime Replacement

Coolant Temperature Sensor

ES#1306687 - 0055421017 - Coolant Temperature Sensor - One (1) Pole Terminal - Beru - Mercedes Benz

One (1) Pole Terminal

Brand:
Beru - Corporate Logo
ES#:
1306687
Mfg#:
0055421017
Back Ordered
$22.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

More About Engine Cooling Parts

Optimize your engine cooling system performance and heater output with quality drive belts, coolant hoses, cooling system parts, and approved coolant fluids from ECS Tuning. Head off expensive repairs and untimely breakdowns with regularly scheduled cooling system inspection and maintenance.

ECS Tuning is not affiliated with any automobile manufacturers.
Manufacturer names and/or part numbers are used only for identification purposes.

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