I need 2 pistons for a 1990 OM103 GAS, 3.0 ltr 6cyl. Please PM me.

OM denotes a diesel.

You're simply after M103 pistons. That may aid in your search.

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68 280SL - 70 280SL - 70 300SEL 3.5 - 72 350SL - 72 280SEL 4.5 - 72 220 - 72 220D - 73 450SL - 84 230GE - 87 200TD - 90 190E 2.0 - 03 G500

Nissan GTR - Nissan Skyline GTS25T - Toyota GTFour - Rover Mini - Toyota Land Cruiser HJ60 - Cadillac Eldorado - BMW E30 - BMW 135i

(and when looking for pistons you need to specify the size wanted)

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1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior



Don't leave that there - I'll take it to bits!

This guy has both kinds

http://www.peachparts.com/shopforum/mercedes-used-parts-sale-wanted/374993-fs-om603-3-0-engine-extra-603-parts-m103-parts.html

To expound... MB matched the pistons to the finished bores. Hence there are a few different "standard" sizes. IIRC you will have a stamp on the piston and the block. IE: if you have a hole stamped with "X" then you want an "X" piston to go back in it. "X" I'm sure is one option, but don't recall the others. If there are any stamps they indicate a deviation from nominal and should be noted and replacement parts matched.

Mercedes did pretty much the same thing with the crank and rod bearings. Makes it a huge PITA when rebuilding these engines. On the up side, they are some of the best engines ever built.

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90 300TE 4-M
Turbo 103, T3/T04E 50 trim
T04B cover .60 AR
Stage 3 turbine .63 AR
A2W I/C, 40 LB/HR
MS2E, 60-2 Direct Coil Control
3" Exh, AEM W/B O2
Underdrive Alt. and P/S Pulleys,
Vented Rear Discs, .034 Booster.
3.07 diffs 1st Gear Start

90 300CE 104.980
Milled & ported head, 10.3:1 compression
197° intake cam w/20° advancer
Tuned CIS ECU
4° ignition advance
PCS TCM2000, built 722.6
600W networked suction fan
Sportline sway bars
V8 rear subframe, Quaife ATB 3.06 diff

Sounds like that line from the Blues Brothers =>

"Country" and "Western"!

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1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior



Don't leave that there - I'll take it to bits!

Yep, and I had no idea that BB was so popular overseas. ( It was released in 1980 then a part 2 later on. )

HA

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I'm not a doctor, but I'll have a look.

'85 300SD 245k
'87 300SDL 251k
'90 300SEL 326k

Six others from BMW, GM, and Ford.

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