difference in chassis number 300d
 

my chassis number doesnt match commonly found numbers can anyone
explain why this would be it is making it difficult to find parts

Does it look like any of the ones listed in post #3 here:

http://www.peachparts.com/shopforum/diesel-discussion/199498-weight-car-85-300d.html?highlight=123.130

What are the first numbers?

123130-12-148529
it seems most have -12-108987 or 8 instead of 7

after 12 it doesnt seem to match anything

Try running the full VIN through the famous Russian web site:

http://www.mbclub.ru/mb/vin/?lng=eng

Its a 79 300D.

Add WDB in front of your vin on the above link.

The last six matches nothing because it is YOUR specific chassis number.

VIN WDB12313012148529
Model 300 D
Chassis 12313012148529
Engine 617912 12 076897
Transmission 02 073352
Order 0 9 705 72441
Approx. year 1979
Lights BOSCH
Cab 19168
Dealer United States (USA) (705)
Interior mb-tex saffron (104)
Paint
470 colorado beige (с 01.01.1975 по 31.12.1979)
04 Unknown code
Options
410 electric sliding roof (с 01.03.1965 по 29.02.1988)
420 automatic transmission, floor shift (с 01.01.1963)
440 tempomat (cruise control) (с 01.09.1975)
467 central locking system and instruments with english lettering (с 01.04.1970 по 31.10.1993)
491 USA version (с 01.01.1963)
518 Becker radio Mexico cassette full stereo (AM/FM - USA) (с 01.02.1974 по 31.10.1980)
524 paintcoat preservation (с 01.01.1964)
531 automatic antenna (с 01.01.1963)
542 lockable glove compartment (с 01.02.1963 по 29.02.1986)
575 front folding armrest and right front seat with seat height adjustment
front folding armrest and headrest, left (с 01.04.1970)
588 automatic climate control and electric window lifters (front and rear doors) (с 01.01.1977)
593 heat-insulating glass, all-around, heated rear window pane (single-sheet safety glass), band filter
green heat-insulating glass all round, heated rear window, single pane safety glass - tinted strip (с 01.01.1972)
639 elimination of first-aid box and warning triangle (с 01.08.1977)
640 aluminium disc wheels with radial-ply tires (с 01.10.1969 по 31.12.1989)
668

One thing left out from above:
"Evil Servo" :overlord: