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1985 Mercedes Benz 300D Base Sedan 123.133 L5 3.0L

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Your Vehicle 1985 Mercedes Benz 300D Base Sedan 123.133 L5 3.0L
Your Vehicle 1985 Mercedes Benz 300D Base Sedan 123.133 L5 3.0L
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1985 Mercedes Benz 300D Base Sedan 123.133 L5 3.0L Engine Cooling Parts

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Expansion Tank Hose

ES#2533930 - 1235012182 - Expansion Tank Hose - Expansion tank to bottom of radiator - URO - Mercedes Benz

Expansion tank to bottom of radiator 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
2533930
Mfg#:
1235012182
Ships in 1 Business Day
$11.54 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Temperature Sensor

ES#1618356 - 0055421017 - Coolant Temperature Sensor - One (1) Pole Terminal - Genuine Mercedes Benz - Mercedes Benz

One (1) Pole Terminal

Brand:
Genuine Mercedes Benz - Corporate Logo
ES#:
1618356
Mfg#:
0055421017
Ships in 3 Business Days
6% off MSRP

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

$33.99

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

$31.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank

ES#2533942 - 1265001549 - Coolant Expansion Tank - Coolant level sensor and cap not included - URO - Mercedes Benz

Coolant level sensor and cap not included 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
2533942
Mfg#:
1265001549
Ships in 1 Business Day
$39.99

This product was last offered at the strikethrough price on
07-13-2026

$31.49 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Relay - Priced Each

ES#2703176 - 0015420219 - Relay - Priced Each - Five (5) Pin Multi-Purpose Relay - Meyle - Mercedes Benz

Five (5) Pin Multi-Purpose Relay 5X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!
Auxiliary Cooling Fan Relay

Brand:
Meyle - Corporate Logo
ES#:
2703176
Mfg#:
0015420219
In Stock
$27.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Radiator Hose

ES#2533678 - 1245013582 - Radiator Hose - Lower - URO - Mercedes Benz

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

Brand:
URO - Corporate Logo
ES#:
2533678
Mfg#:
1245013582
Ships in 1 Business Day
$27.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat - 80C

Includes new o-rings

Brand:
Behr - Corporate Logo
ES#:
2862703
Mfg#:
6172001815
Ships in 1 Business Day
$30.99

This product was last offered at the strikethrough price on
05-07-2026

$25.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Radiator Cap

ES#2747957 - 1235010215 - Radiator Cap - Used to maintain proper pressure and boiling point of your cooling system - Reutter - Mercedes Benz

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

Brand:
Reutter - Corporate Logo
ES#:
2747957
Mfg#:
1235010215
In Stock at Vendor
$18.11

This product was last offered at the strikethrough price on
06-12-2026

$16.44 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Cap

ES#2533938 - 1245000406 - Expansion Tank Cap - Includes new seal - URO - Mercedes Benz

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

Brand:
URO - Corporate Logo
ES#:
2533938
Mfg#:
1245000406
Ships in 1 Business Day
$7.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Relay - Priced Each

ES#2533602 - 0015420219 - Relay - Priced Each - Five (5) Pin Multi-Purpose Relay - URO - Mercedes Benz

Five (5) Pin Multi-Purpose Relay 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!
Auxiliary Cooling Fan Relay

Brand:
URO - Corporate Logo
ES#:
2533602
Mfg#:
0015420219
Ships in 1 Business Day
$12.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Radiator Hose

ES#2533668 - 1235010082 - Radiator Hose - Upper Hose - URO - Mercedes Benz

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

Brand:
URO - Corporate Logo
ES#:
2533668
Mfg#:
1235010082
Ships in 1 Business Day
$15.99

This product was last offered at the strikethrough price on
08-13-2026

$11.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Temperature Sensor

ES#3988414 - 0055421017 - Coolant Temperature Sensor - One (1) Pole Terminal - URO - Mercedes Benz

One (1) Pole Terminal 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
3988414
Mfg#:
0055421017
Ships in 1 Business Day
$5.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Temperature Sensor

ES#2636056 - 0055421017 - Coolant Temperature Sensor - One (1) Pole Terminal - FAE - Mercedes Benz

One (1) Pole Terminal

Brand:
FAE - Corporate Logo
ES#:
2636056
Mfg#:
0055421017
Ships in 1 day
$11.99

This product was last offered at the strikethrough price on
05-07-2026

$10.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Temperature Sensor

ES#4684768 - 0055422617 - Coolant Temperature Sensor - One (1) Pole Terminal - Vemo - Mercedes Benz

One (1) Pole Terminal

Brand:
Vemo - Corporate Logo
ES#:
4684768
Mfg#:
0055422617
Special Order: No Guaranteed ETA
$10.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Radiator Hose

ES#2533670 - 1235011882 - Radiator Hose - Lower Hose - URO - Mercedes Benz

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

Brand:
URO - Corporate Logo
ES#:
2533670
Mfg#:
1235011882
Ships in 1 Business Day
$9.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Anti-Freeze Tester

ES#4337913 - CTAA195 - Anti-Freeze Tester - Tests all ethylene glycol solutions with radiator hot or cold - CTA Tools - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Tests all ethylene glycol solutions with radiator hot or cold

Brand:
CTA Tools - Corporate Logo
ES#:
4337913
Mfg#:
CTAA195
In Stock
$9.98 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Freeze Plug - Priced Each

ES#2608713 - 000443034002 - Freeze Plug - Priced Each - 34mm - Febi - Mercedes Benz

34mm We Price Match - Give Us A Call or Chat!
On Side Of Engine Block

Brand:
Febi - Corporate Logo
ES#:
2608713
Mfg#:
000443034002
In Stock
ON SALE! SAVE 88%
$7.99

This product was last offered at the strikethrough price on
05-02-2026

$0.99 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.

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Manufacturer names and/or part numbers are used only for identification purposes.

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