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On Demand Video
$7.99

Outside Rear View Mirror, Removal, Service and Repair - On Demand Video

Applies to most models 1973 to 1985 w/ manual mirrors - W114, W115, W107, W116, W123 and early W126 driver side

Is your driver side or right side manual adjusting mirror getting difficult to adjust? Is the mechanism broken or will not hold adjustment? Does the mirror glass need replacing? Repairing these types of problems is definitely something you can do yourself!

On Demand Video
$0.99

W123 Easy Fuse Box Cover Removal and Replacement - On Demand Video

You would think this is easy until you get a W123 and try it yourself!

This is another small "frustration" for W123 diesel owners. The fuse box cover is mounted flat to the firewall behind and to the left of the brake booster. You can not just pull it straight out nor can you just push it straight back on.

$74.50

Automatic Transmission Shift Rod Bushing Replacement Tool Kit - New Bushings Included

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

The plastic shift bushing is a very common part that needs to be replaced on older Mercedes. Can you believe it is the exact same part that was used on all models for over 25 years! It is an inexpensive part that can cause big problems if it breaks out.

$12.95

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!

$22.75

1977 to 1985 Diesel Special 24 mm Oil Filter Housing Fitting Wrench

A Must Have Tool when dealing with stubborn oil cooler hoses

NOTE: May be black or chrome depending upon stock on hand. This standard 24 mm combination wrench is specially ground in our shop so that it will hold the fitting on the late 616 and 617 oil filter housing when loosening the oil cooler hose end nut.

$97.50

Lower Front Seat Spring Sag Repair and Restoration Kit

For ONE 116, 123 and 126 Chassis Sedans, Coupes or Wagon Seat Bottom

For ONE 116, 123 and 126 Chassis Sedans, Coupes or Wagon Seat Bottom. This unique kit is designed to help you repair and restore one broken down front seat bottom so common in the 116, 123 and 126 chassis Mercedes built from 1973 to 1991.

$246.50

5 Cylinder 617 300D 300TD 300SD Physical Exam Kit

Check the Health of your Diesel Engine Yourself - Save BIG $$$

If you are going to buy or have just purchased an older 5 cylinder Mercedes Diesel (1975 to 1985) the first thing you need to do is a good physical exam of the engine. Don't throw money at a car that has a dying engine.

$239.00

4 Cylinder 220D 240D Physical Exam Kit - Check Engine Health

You can save thousands $$ by doing this yourself and catching problems early.

If you are going to buy or have just purchased an older 4 cylinder Mercedes Diesel the first thing you need to do is a good physical exam of the engine. It is even better to do this BEFORE you purchase the car to prevent surprises and pain in your wallet.

$169.95
Currently out of stock.

Ponton 110 113 114 115 123 Round Hella H4 Headlight Upgrade Kit

SOLD OUT -- NOT AVAILABLE AS OF MARCH 2024- Kent has found a good alternative. See related products in this item's description.

This is one of the best safety upgrades you can make on your old Benz - Let there be light !!!

$16.95

Front Seat Repair Manual by Kent Bergsma

Fits all chassis: 107, 114, 115, 116, 123, 126, 201 and 124. This repair manual is written for all Mercedes models from the early 1970s up to the later 1980s.

Power Sunroof Service and Repair Kit
$44.50

Early Power Sunroof Service and Repair Kit

For Non Tilting Power Sunroofs 1965-1985

For all 111, 112, 108, 109, 114, 115, 107, 116, 123, 126 and 201 chassis (Non tilting roofs up through 1986). Do you have a power sunroof that is working poorly or maybe not at all?

$24.95

Miracle Paint For Permanent Rust Repair PINT Black - Free Brushes and Gloves

PLEASE NOTE: This kit contains liquids that can only be shipped by UPS ground. Due to this requirement we can only ship to the continental lower 48 States Sorry for this inconvenience.

NEW and improved HD formula. This new formula has a thicker viscosity for easier application on vertical surfaces and when using fiberglass cloth.Miracle Paint is a unique moisture cured non-porous paint that bonds to rusted and corroded metals like no other coating.

$42.95

Miracle Paint For Permanent Rust Repair QUART Black - Free Brushes and Gloves

Receive Related Bonus-Product Free! (Can only be shipped UPS Ground)

NEW and improved HD formula. This new formula has a thicker viscosity for easier application on vertical surfaces and when using fiberglass cloth. Miracle Paint is a unique moisture cured non-porous paint that bonds to rusted and corroded metals like no other coating.

$34.50

Miracle Paint Rust Repair Starter Kit - with manual and Fiberglass cloth

Limited Time Special Price: We want to help you get started using this amazing product. Watch the videos below for more details.

NEW and improved Miracle Paint HD formula. This new formula has a thicker viscosity for easier application on vertical surfaces and when using fiberglass cloth.

$27.95

616 617 Diesel Vacuum Connector Service Kit

For 1975 to 1985 240D 300D 300CD 300TD and 300SD with the 61x diesel engine

FITS THE FOLLOWING: 115, 116, 123, and 126 chassis. Here is a diesel item I have put together that every Mercedes diesel owner should have.

61x Diesel Automatic Transmission Tuning Manual
$28.50

Diesel Automatic Transmission PEAK Performance Tuning Manual by Kent Bergsma

Receive two related On-Demand videos FREE! Covers ALL Diesel Automatics from 1969-1984 220D 240D 300D 300CD 300TD 300SD

I have received so many emails on this topic that I had to sit down and write a very detailed manual over 130 pages in length!  Let's face it! Diesel automatic transmissions can be troublesome, particularly those models that use vacuum to control shifts.

Early Internal Square Voltage Regulator
$32.50

1970s Chassis Alternator Mounted Voltage Regulator

Fits Early Pre 1980 Models -Direct replacement for rectangular box regulator

Works on most 116, early 107, 114, 115 and early 123 models from the early 70s up to the end of the 1970s. This is a replacement for the Bosch rectangular voltage regulator (see image below) those cars that use an internal voltage regulator.

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. 

$169.50

123 Chassis New Front Bilstein Shock Set of (2) HEAVY DUTY

For agressive driving on hauling heavy loads - PDF INSTRUCTIONS

FITS THE FOLLOWING all 123 chassis from 1977-1985 which include the 230, 240D, 240TD, 280E, 280CE, 300D, 300CD and 300TD. The best way to upgrade the original ride and feel of your Mercedes is to replace your shocks with new HEAVY DUTY Bilsteins.

$118.75

615 616 617 Diesel Valve Adjusting Wrench Kit - Designed by Kent Bergsma - Made in the U.S.A.

For adjustable valve clearances on 190D 200D 220D 240D 300D 300CD 300TD 300SD 1961 to 1985

These wrenches are fantastic labor savers. If you have been thinking about adjusting your diesels valves on your own - this kit will save you time, frustration, and high shop labor costs. Now is the time to get your own pair. NOW WITH RUBBERIZED GRIP HANDLES. Made in the U.S.

Do It Yourself Permanent Rust Repair Without Welding
$19.75

Do It Yourself Permanent Rust Repair Without Welding by Kent Bergsma

PRINTED AND BOUND REPAIR MANUAL -- NO PAINT INCLUDED!!!!!

Applies to all Mercedes: Pre 1960, 190SL, 110, 111, 112, 113, 114, 115, 108, 109, 107, 116, 123, 126, 201, and 124 chassis. I have been trying to find a lasting solution to rust problems on old cars ever since 1962.

$319.00

1980 to 1985 240D 300D 300CD 300TD and 81 to 87 126 300SD 300SDL

Only fits years and models noted. Will NOT fit W116 or R107 models ( See related products below), Now comes with both Kent's PDF written manual and new 44 min. video. Electrical switch available separately see related products below.

As of the summer of 2020 steering locks for these old diesels are no longer being manufactured! Your only option if your key is sticking ( and you already tried replacing the tumbler and key) is to try to find a good used unit or a new old stock unit in some warehouse.

$380.00

4 Cyl 220D 240D 190D DIY Fuel Injector Rebuild Kit

This kit has the right stuff you will need to rebuild your diesel fuel injectors yourself in your own garage!

5/25/22 update: The precision nozzles are now  made for us by Wolfswerke-sachsen ( same company and same nozzle that was formerly branded as Monark). Yes!

$227.00

Diesel Fuel Injector Balance Pressure Tester - Yes, You Can Do It Yourself!

Version 3 release - Improved fluid handling design - Watch the video below for reasons behind the changes.

For all MBZ diesel engines 1950 to 1999. Designed by Kent Bergsma. These are built at Mercedessource to control quality and production demands. Each one is tested here in our shop before shipping.

$9.80

3 Dome and Trunk Light Bulbs + 3 Glove Box and License Light Bulbs

These fit many models from the 1970s to 1990s—both short and long bulbs, as shown.

The long bulb is 1 and 3/4 inches long, and the short bulb is 1 and 1/2 inches long. These bulbs don't necessarily fit all models. Some applications require smaller bulbs, and please measure your bulbs before ordering this 6-pak.

$44.95

615 616 617 Diesel Healthy Vacuum Exam Kit

For all 4 and 5 cylinder diesel Mercedes 1969 to 1985 ( Except 190D)

Is your diesel suffering from hard brakes, poor or no engine shut off, climate control problems, or even funky transmission shifting??

$98.50

Late 616 617 Diesel High Performance Glow Plug Relay

1981 to 1985 240D 300D 300CD 300TD 300SD - Faster smoother starts in COLD WEATHER!

Looking for better-staring performance? Are your glow system lights not coming on on your dash even after replacing the glow plugs? It it taking way too long for the glow light to go out ( it should only be on 5 to 10 seconds)?

$417.00

5 Cyl 617 Diesel Engine Fuel Injector DIY Rebuild Kit

You CAN rebuild your diesel fuel injectors yourself in your own garage!

5/25/22 update: The precision nozzles included are now  made for us by Wolfswerke-sachsen ( same company and same nozzle that was formerly branded as Monark). Yes!

$165.00

116 123 126 5 cylinder TURBO DIESEL Driveline Flex Disc Kit

For 300D, 300CD, 300TD and 300SD to 1985 with turbo charged engine. Two Discs with hardware included.

FITS THE FOLLOWING All 116, 123 and 126 chassis diesel cars with 5 cyl. turbo engines. This includes 1982 to 1985 300D, 1982 to 1985 300CD, 1981 to 1985 300TD and 1978 to 1980 300SD / 1981 to 1985 300SD. THIS IS AN IMPORTANT MERCEDESSOURCE MAINTENANCE ALERT

123 Front/Rear Driveline Flex Disc Kit (NON TURBO) new
$135.00

115 123 220D 240D 300D NON TURBO Driveline Flex Disc Kit

Two Discs with hardware included.

FITS ALL 115 220D 240D 300D and 123 240D 300CD 300D 300TD with NON TURBO engines. THIS IS AN IMPORTANT MERCEDESSOURCE MAINTENANCE ALERT! In previous years I have had a number of Mercedes diesels come in to my shop with severe damage due to total drive line flex disk failure.

$42.50

Early Diesel Vacuum Pump Repair Kit - No Instructions

1969 to 1979 220D 240D 300D 300CD and 300TD Only

Note: Works only on models that have two vacuum lines coming of the pump cover. I am seeing lots of vacuum pump problems with the older diesels. They are reaching that age regardless of mileage where the pumps are failing right and left.

123 Glove Box Maintenance and Repair Guide
$18.95

123 Glove Box Maintenance and Repair Guide - by Kent Bergsma

For all 123 chassis cars sedans, coupes and wagons from 1977 to 1985. Why a glove box manual? Of all the Mercedes glove boxes I have worked with from the early 1950s up to the mid 1990s, the 123 chassis glove box has proven to be the one that needs the most attention AND

123 Tie Rod Kit
$84.75

123 Chassis Front Steering Tie Rod Replacement Kit w/ Instructions

For all 240D 280E 280CE 300D 300CD 300TD 1977 to 1985

Kit contains right and left tie rod assemblies as shown. We have found if you discover one or more loose tie rod ball joints, it is always better to replace both rod assemblies at the same time. Entire assemblies are about the same price as two individual ball joints.

$32.50

All Chassis 1968 to 1991 Front Steering Idler Arm Repair Kit

Next to bad steering gear box this is number one cause of steering looseness

FITS THE FOLLOWING: All Mercedes Chassis 111 113 108 109 107 114 115 116 123 126 from 1968 to 1991 (not applicable for 201 or 124 chassis). This is a very common wear problem on most older Mercedes.

$38.95

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.

Late Style Vacuum Pump Main Checkvalve
$92.50

Late Style Vacuum Pump Main Checkvalve ( Check Valve )

FITS THE FOLLOWING: ALL 123 and 126 chassis 240D, 300D, 300TD, 300CD, and 300SD 1980 to 1985 with later style vacuum pump (only one line coming out of top). In 1980 Mercedes changed the design of their diesel vacuum pumps.

$13.95

617 Turbo Diesel Air Cleaner Rubber Mount Heat Shields ( Set of 3 )

These can help prolong the lift of the rubber mounts under your air cleaner housing

These steel cupped heat shields go under the rubber mounts to help deflect heat and grease away. In most cases (unless your engine is severely shaking) they will prolong the life of the rubber mounts.

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.

On Demand Video
Step-by-Step Diesel Purge Instructions - On Demand Video Instruction
$8.99

Purging a Diesel Engine Fuel Delivery System Step-by-Step - On Demand Video

How to use the best medicine for sick diesels to perform a proper diesel purge

Rough running diesels abound everywhere. The symptoms include poor acceleration, no power, and excess exhaust smoke. Some times these can be a sign of real problems. Other times it may mean your fuel injection system just needs a good cleaning. And NOTHING cleans better than Diesel Purge.

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