Search | W123 | Transmission

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$168.00
Currently out of stock.

OM 617 Turbo Diesel Automatic Transmission Bowden Cable

Fits 1981 to 1984 Turbo 300D, 300CD, 300TD and 300SD with free video instructions - LAST ONE

Very good used working bowden cable with good plastic threads on the adjuster. No longer available new. This will not fit the 1985 transmissions with the black modulator. Comes with installation instructions. You must be logged in to your account and click on my account to view the video.

$2.95

123 107 126 201 124 722.3x and 722.4x Transmission Modulator O-ring Seal

For re-sealing green and black modulators on most 1981 to 1993 models.

If your modulator is working ok, but leaking transmission fluid, you may only need to replace the inexpensive oring ( o ring ). You do have to be careful when removing the modulator from the transmission. For instructions (available separately) see related products below.

$32.95

Automatic Transmission Pan Black Hole Particle Pick Up Magnets - Super Strength

Will work on all automatic transmissions with steel flat pans

Sold in a set of four. These have to be the strongest magnets in the World! You do not put them inside the pan. Rather you spread them out on the outside bottom of the transmission pan as shown in the picture below. Talk about an easy install!  You don't even need to jack the car up!

On Demand Video
280SEL Transmission Service - On Demand Video
$12.99

Older Automatic Transmission Fluid and Filter Service - On Demand Video

Directly covers most 1960’s Automatics - Indirectly covers 1970’s and Early 1980’s Automatics Directly covers most 1960’s Automatics - Indirectly covers 1970’s and Early 1980’s Automatics

Transmission service on these older Mercedes is very often neglected and it is something you can do yourself. It should be done every 30,000 miles or every 5 years (whichever comes first). After you watch this video you will find out why you should do it yourself!

$1.90

1982 to 1995 Auto Transmission Dipstick Tube Seal

Fits all models with the 722.315 and most 722.4 transmissions - see list below

This is becoming one of the common transmission fluid leaks on these older automatics. If the trans is leaking fluid in small puddles while the car sits for longer periods suspect this seal. You can be fooled thinking it is coming from the pan gasket.

$1.95

617 Turbo Diesel Transmission Bowden Cable O-ring Seal

For 1981 to 1985 Turbo Diesel 300D 300TD 300CD and 300SD

Genuine Mercedes special Oring seal for the bowden cable housing where it connects to the right side of the automatic transmission. This is a common leak area and you may be fooled into thinking it is leaking out of the pan gasket.

On Demand Video
$12.99

Transmission Bowden Shift Control Cable Removal and Replacement - On Demand Video

Specific instructions for 1981 to 1985 Turbo Diesel Automatic Transmissions

The bowden cable runs from the transmission to the throttle linkage on many Mercedes from the early 1980's up through the early mid 1990's. When this cable fails or is out of adjustment the transmission will either shift too early or too late.

$8.95

Transmission Shift Rod Clip Removal and Installation Tool

For all 108 109 114 115 107 116 123 126 201 124 129 and 140 chassis 1968 to 1995

If you have ever tried to remove and reinstall a shift rod attachment clip under your Benz you know how frustrating it can be. On some chassis like the 201 models it is almost impossible to even get to the clip let alone remove it with standard hand tools!

61x Diesel Automatic Transmission Tuning Manual
$28.50

Diesel Automatic Transmission PEAK Performance Tuning Manual by Kent Bergsma

Receive a Related Bonus-Product FREE! Covers ALL Diesel Automatics from 1969-1985 220D 240D 300D 300CD 300TD 300SD

Lets face it! Diesel automatic transmissions can be troublesome, particularly those models that use vacuum to control shifts. This is largely due to the fact that diesel engines don't produce vacuum naturally. It has to be artificially manufactured.

Auto transmission R and R cover
$23.50

Automatic Transmission Removal and Replacement by Kent Bergsma

This manual is part of our Advanced DIY Mechanic Series. It covers advanced procedures in simple terms with photos to illustrate every step. The format size is 8.5 x 7 inches. It is printed on 28 pound stock paper and is wire bound to allow it to stay open when on your workbench. 

$108.95

123 126 Diesel Transmission Ultimate Diagnostic and Tuning Kit

116 and 126 1978 to 1985 300SD, 1980 to 1985 123 240D and 1981 to 1985 123 Turbo 300D 300TD 300D 300CD

To properly tune your diesel transmission you will first need the know-how and then the equipment to adjust your transmission modulator and your VCV transmission shift valve.

$34.95

Diesel Automatic Transmission VCV Vacuum Controls Testing Kit

All diesel Automatic Transmissions with Vacuum Modulator Fitted 1978 to 1993

This unique kit will allow you to hook up a 30 in HG vacuum gauge between your vacuum control shifting valve (VCV) and your transmission modulator to test the VCV for proper function and to tune it for peak shifting performance.

On Demand Video
$7.99

Troubleshooting Older Diesel Automatic Transmission Shift Problems - On Demand Video

Knowing where each component is located and what it does is the start of solving externally caused shift problems

I don't think there is any owner out there who has owned a 1978 to 1993 diesel automatic for any length of time and who has not had some sort of shift problem with the transmission. Maybe it was just a little jerk or a slipping shift. Maybe the rear end clunked hard when you came to a stop.

$69.00

123 126 124 Chassis with 722.4x Transmission -Upgraded BLACK Modulator Valve

Fits late 1985 123 and other models listed in description from 1986 to 1993 - Check the color match

If you are experiencing very hard or less than perfect shifts, a failed transmission modulator could be the problem. New Genuine Mercedes part. This unit is an upgrade over the original. It has a better thrust pin design which is less prone to cause pressure variations in cold weather.

$118.00
Currently out of stock.

1980 and 1981 NON Turbo 300D, 300CD Transmission Red Modulator - USED

No longer available new - super hard to find and a must for shifting of these transmissions!

Only works if your current transmission has a red modulator. Will also work on some late W123 240's.  Complete with the cap as shown. To get this to work right you MUST understand how the vacuum system works on those models.  It is VERY FINICKY!.  SEE MY manual below

$8.90

190E 190D 260E 300E Transmission Pan Gasket Only

Also fits CAL. 1985 Models 300D 300CD 300TD and 300SD with 722.416 transmissions

Brand new gasket. Make sure this fits your transmission before ordering. No returnable if ordered in error.

$11.90

114 115 123 Manual Transmission Shift Rod Connector

Fits 114 115 220 220D 240D 1968 and 1976 and 123 240D 1977 to 1983 US Models Only

Common wear item. Check for looseness where they nylon bushing sits in the aluminum connector. This is a brand new Shift rod Metal Connector with Nylon Bushing installed. Sold individually. List price $20.00

$22.95
Currently out of stock.

Fluid Maintenance - Radiator and Fuel Hose HD Pinch off Pliers

Best tool for secure clamp-off in tight locations - produces super tight seal on larger hoses

I have used a lot of different clamping tools over the years to prevent fluids from leaking out when removing coolant, fuel, or brake fluid hoses. Most work ok. Some are hard to use in tight places.  Many do not stop every last drip from coming out of the hose.

$24.50

Late 123 Chassis Diesel Transmission Mount

Turbo models 1982 to 1985 300D 300CD, 1981 to 1985 300TD, and 1982 to 1983 240D.

New rubber mount that bolts on rear of transmission. Failure of this part can cause excessive engine vibration. Common failure item. Fits models listed above. NO INSTRUCTIONS INCLUDED. Single mount only no bolts or nuts included.

$6.50

Metal to Metal Anaerobic Gasket Maker

Small .20 Fl Oz for small repairs

This is the absolute best gasket maker when you have a clean and tight metal to metal contact. Examples of where you would use this is SEALING the rear differential cover, aluminum oil pan where is mounts to the engine block, etc.

$19.50

616 617 Diesel Engine Starter / Transmission Removal Tool

For 220D 300D 300TD 300CD and 300SD 1969 to 1985

Getting to and removing the two hex head bolts that hold the starter to the bellhousing can be a real test of your sanity - especially if you don't have the right tool! You will need a heavy duty hex socket on a strong wobble extension.

$32.50

Later Automatic Transmission Dipstick Genuine

Most models 1981 and to 1993. 123 chassis only Turbo Diesel - see list below

FITS: MERCEDES BENZ 190DT, MERCEDES BENZ 260E, MERCEDES BENZ 300CDT, MERCEDES BENZ 300CE, MERCEDES BENZ 300DT, MERCEDES BENZ 300E, MERCEDES BENZ 300SD, MERCEDES BENZ 300SDL, MERCEDES BENZ 300SE, MERCEDES BENZ 300SEL, MERCEDES BENZ 300SL, MERCEDES BENZ 300TD, MERCEDES BENZ 300TDT, MERCEDES BENZ 3

$5.95

Automatic Transmission Nylon Shift Bushing Set of 2

For LATE MODEL (70-73) 108 109 and ALL 114 115 107 116 123 126 201 124 129 and 140 chassis 1968 to 1995

Set of (2). The number one cause of a loose or rattling shift lever is failed or missing shift lever bushings. Our upgraded bushings are made out of nylon and are much tougher than the original plastic type. No instructions or special tools included.

$44.50

617 Turbo Diesel Transmission Front Reseal Kit - Late

For Late 123 and 126 chassis 1981 to 1984 Turbo transmissions only - Other models coming soon.

This is the most complete front reseal kit on the market today. It includes Kents new IMAGE-BY-IMAGE instructions. That means there is an image for every single step in the operation of replacing these 2  (Yes there are 2!) critical front seals.

$4.25

Diesel and Gas Early Automatic Transmission Tube Sealing Rings

For 3 banjo bolt connections 1970 to 1980

Some of the most common auto transmission leaks on the early automatics come from the banjo bolts that connect the filler tube to the bottom of the pan and the two transmission coolers lines to the lower front transmission housing.

$3.20

Transmission Modulator Valve Rubber Cap

Fits Late 123 107 126 201 and 124 Chassis 1981 to 1993

NEW Genuine Mercedes Modulator Cap. Check to see if yours is cracked. Cap removal is required for modulator adjustment.

Typical old and cracked rubber cap:

$345.00

Late 240D 300D Clutch Overhaul Kit

123 chassis vin # 123.123 - from 219675 on

If you are going to pull your transmission to replace any clutch components you should do it right! That means replace all key wear components so you don't have to remove the transmission again any time soon. Go with the best brand parts so the repair will last the longest.

$349.00

220D Early 240D 300D Clutch Overhaul Kit

Fits all 115 chassis and 123 chassis up to vin # 123.123 - up to 219674

If you are going to pull your transmission to replace any clutch components you should do it right! That means replace all key wear components so you don't have to remove the transmission again any time soon. Go with the best so the repair will last the longest. That means genuine Sachs parts.

$12.95
Currently out of stock.

Front Crank and Transmission Seal Removal Tool

Helps to remove 616 and 617 Diesel Engine Front Crank Seals and automatic transmissions from 1965 to 1995

If you have a leaking transmission seal it can be a real bear to get the old seals out without this special pry tool. This tool also works great for front crank seals as well.

$3.80

617 Turbo Transmission Oil Cooler Line Banjo Washers (Set of 4)

Fit 123 and 123 chassis turbo diesel transmissions 1981 to 1985

Common diesel transmission leak source. These aluminum washers fit on each side of the banjo connection where the oil cooler lines bolt to the right and left front side of the transmission case. Fit 300D 300TD 300CD and 300SD with automatic transmissions from 1981 to 1985.

$2.25

Automatic Transmission Torque Converter Drain Plug

Brand new Auto transmission torque converter drain plug for All Mercedes, gasoline and diesel, from the late 60s up to the late 90s. If you are doing a complete transmission flush you will need to drain the torque converter. Good to have spare on hand!

$84.50

123 and 123 Most 300D 300TD 300CD 300SD 300SDL New Transmission Oil Pan - Genuine

WARNING: Will not fit 1985 models

New Genuine AT transmission pan. Fits most TURBO 123 and 126 diesels 1982 to 1987 with the exception noted. WARNING: Will not fit 1985 models particularly California. If you have a 1985 model we do not carry pans for that particular transmission. Suggest you contact a Mercedes dealer.

$4.95

Transmission Shift Rod Retaining Clip X 2

Fits late 108 113 111 109 and 107 116 114 115 123 126 201 and 124 Chassis

 These same clips are used on almost all Mercedes Benz Models from the late 1960s up into the 1990s. If you have lost or damaged one of your clips here is a chance to get replacements. Maybe good idea to have spares on hand. Sold in set of 2. 

$72.00

115 116 123 126 Diesel Torque Converter Flex Plate (USED)

ONLY USED AVAILABLE

FITS ALL 115 116 123 126 Chassis Diesels from 1968-1985, including 220D 240D 300D 300CD 300TD 300SD both Non Turbo and Turbo Models! This is an excellent used Genuine Oem Mercedes Torque convertor flex plate.

617 Turbo Kickdown Switch
$18.75

123 126 Chassis 617 Turbo Kickdown Switch

All Turbo 300D 300CD 300TD 300SD 1981 to 1985 -Located under throttle pedal

Brand new Genuine OEM turbo diesel kickdown switch. Fits 123 turbos from 1982-1985 and 126 turbos from 1981-1985. This switch is located under your accelerator pedal, and it tells the transmission when to down shift. If the switch breaks it can stick in or on!

$22.00

Diesel Engine Automatic Transmission Torque Converter Bolt Set (Used)

Correct factory bolts and special washers

Excellent used set of torque converter bolts with correct washers included. These bolts are critical and I often see them replaced with improper bolts. There are six that are required to hold the flex plate to the torque converter on all Mercedes diesel engines from 1969-1985.

123 late 240D slave cylinder
$58.50

123 Late 240D Clutch Slave Cylinder - Vin Number Specific

New clutch release hydraulic slave cylinder for later model 123 chassis 240D. This is the unit that mounts on the right forward side of the transmission. Be sure to check your vin number before ordering. This one fits up to the following vin number 123.123 - from 219675 .

123 early 240D slave cylinder
$68.50

123 Early 240 Clutch Slave Cylinder - Vin Number Specific

New Ate Clutch SLAVE cylinder for early 123 chassis 240D manual transmission. Be sure to check your vin number before ordering. This one fits up to the following vin number 123.123 - up to 219674. List price is $ 107.00

$19.75

107 114 115 116 123 126 Transmission Oil Cooler Flexible Hose w/ Wire Protector

A common source of wetness around the lower front of the engine.

Yes, with age they can leak from the inside out ever so slowly. Replace before they fail! This is a great upgrade that fits most models from early 70s up to mid to late 90s. The wire protector on these hoses will prevent chaffing especially from loose V belts.

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