Just bought a 1981 300d. hw do i know what range my engine and chassis are for parts ordering??

You have a W123.130 chassis, with a 617.912 engine.

You will see these numbers when you peruse fastlane for parts (click on the "buy parts" link above)

Most people refer to that chassis as a 123, and the engine as a 617.

You will note that many part numbers on your car start with 123, although a few will be stamped with 116 or 114 or even 108. In these cases they were able to use parts from other chassis and save a buck on tooling. (plus, if it aint broke, don't fix it)

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It is a truism that almost any sect, cult, or religion will legislate its creed into law if it acquires the political power to do so. Robert A. Heinlein


09 Jetta TDI
1985 300D

What you are looking for are the last 6 digits of the vin number and the last 6 digits of the engine number.

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Palangi

2004 C240 Wagon 203.261 Baby Benz
2008 ML320 CDI Highway Cruiser
2006 Toyota Prius, Saving the Planet @ 48 mpg
2000 F-150, Destroying the Planet @ 20 mpg



TRUMP .......... WHITEHOUSE
HILLARY .........JAILHOUSE
BERNIE .......... NUTHOUSE
0BAMA .......... OUTHOUSE

The engine model and serial number is located on the left rear of the engine block, below the cylinder head on a flat spot of the block. The VIN number is located on the driver side door latch pillar on a steel number tag, and on the driver side window pillar (betweent he "A" pillar and windshield) on a metal tag. You should have both the engine and VIN numbers handy as Mercedes has a tendency to make running changes, and everything is based on the serial number.