If the head is OK, and you DIY
1983 Mercedes-Benz 300D Sedan - Cylinder Head & Valvetrain - Page 1
+ oil change and antifreeze.

If you take it to a shop $500.00 - $3,000.00 USD.

If the head is cracked ???

http://www.peachparts.com/shopforum/diesel-discussion/285883-om617-head-gasket-failure-pictures.html

http://www.peachparts.com/shopforum/diesel-discussion/325016-1980-240d-cracked-cylinder-head-cavitation-damage.html

http://www.peachparts.com/shopforum/general-information/272132-cavitation.html

http://www.peachparts.com/shopforum/diesel-discussion/155113-leaky-head-gasket.html#post1184752

1985 300TD head gasket repair
http://www.peachparts.com/shopforum/diesel-discussion/325433-1985-300td-head-gasket-repair.html

http://www.peachparts.com/shopforum/diesel-discussion/306995-om617-intake-exhaust-valve-guide-id-specification.html

http://www.peachparts.com/shopforum/diesel-discussion/272804-need-definitive-om617-compression-test-procedure.html

http://www.peachparts.com/shopforum/general-information/239902-home-made-special-tools-where-members-can-share-how-they-made-special-tools.html


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__________________
ASE Master Mechanic

Prototype R&D/testing:
Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician.
Noise Vibration and Harshness (NVH).
Dynamometer.
Heat exchanger durability.
HV-A/C Climate Control.
Vehicle build.
Fleet Durability
Technical Quality Auditor.
Automotive Technical Writer

1985 300SD
1983 300D

https://www.boldegoist.com/