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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.

$80.00

OM 636 Diesel Engine Monark Fast Glow Plugs x 2

DISCONTINUED BY MONARK FEBRUARY 2018 --We have 2 plugs left for someone who needs spares.

Only two plugs are available. These are best for spares with an engine that already has fast pencil plugs installed.  They fit 4-cylinder flat head diesel 636 engines built in the 1950s.

$14.00

Late OM602 OM603 Diesel Bosch Glow Plug - SOLD INDIVIDUALLY

5 needed for 1986 to 1989 190D 2.5 and 1990 TO 1993 300D. 6 needed 1990 to 1991 350SDL, 1992 to 1993 300SD (140 Chassis) and 1994-1995 S350

PLEASE READ CAREFULLY. This glow plug works ONLY in those years and models listed above. SOLD INDIVIDUALLY. If you need five please change your cart total to 5. If you need 6 then change the total to 6. PLEASE NOTE:  NO INSTRUCTIONS and NO WIRE NUTS are included.

$39.95

Early Diesel Pre-glow Chamber Carbon Reamer - Designed by Kent Bergsma

For 1961 to 1979 190D 200D 220D 240D 300D 300CD 300TD with Series Style Glow Plugs

This custom reamer designed and built by Kent Bergsma in our shop is the only one like it in the World. This is truly another first. Now you will be able to ream out that old crusty carbon build-up in your old diesel engine. Thread size matches old series-style glow plugs.  18 x 1.5

$89.95

190D 2.2 4 Cylinder Cylinder Glow Plug Installation Kit

For 601 diesel engines only from 1984 to 1986 - reamer and instructions included

If you are planning to install new glow plugs in your 601 engine, 190D from 1984-1986, it is essential that you ream the carbon out of the holes to prevent premature failure of your new plugs.

$58.50

E300D Diesel All Steel Glow Plug Reamer - Long Port Version

1995 to 1999 604 605 606 Engines - Custom made by Mercedessource

Cleaning out the carbon is a MUST anytime you change glow plugs in these engines. If you don't do this your engine will not run as well a startup and it will shorten the life of the new plugs. This is a high quality custom made glow reamer. All steel body. Made by Kent Bergsma.

5 Cylinder Diesel Series to Pencil FAST Glow plug Conversion Kit
$104.75

Early 300D 5 Cylinder Diesel Series to Pencil FAST Glow plug Conversion Kit

Fits 1975 to 1979 5 Cylinder 300D 300CD 300TD - Better starting performance

WARNING: PLEASE confirm you have the original engine in your diesel BEFORE ORDERING this kit. We keep getting owners ordering this kit only to find out a later model engine has been installed. This happens quite often.

4 Cylinder Diesel FAST Pencil Glow plug Conversion Kit
$88.95

Early 123 240D 4 Cylinder Diesel FAST Pencil Glow plug Conversion Kit

For 240 1977 to 1979 with series glow plugs.

If you own an early 123 4-cylinder diesel, then this is a must-have diesel engine kit! This glow plug upgrade will do three things that will put a smile on your face: 1. Your engine will start faster and cold idle smoother. 2. Your glow plugs will last longer. 3.

$58.95
Currently out of stock.

123 240D Monark Pencil Glow Plugs - Set of 4 with Instructions

LAST SET WE HAVE. NLA. For 1980 to 1983 Models ONLY - Check your glow plug style BEFORE ordering

Made in Germany. Application: Fits all 4 cylinder 240D diesel engines from 1980 to 1983 with pencil glow plugs. Excellent quality. They are built with the same materials and have the same specifications as the Bosch Duraterm pencil plugs.

$49.75

Heavy Duty Carbon Reamer for Pencil Glow Plug Chambers

Now with Kent's special tool included! A must-have to increase glow plug performance and extend their life.

PENCIL GLOW PLUGS ONLY!! WILL NOT WORK ON MODELS WITH THE OLD STYLE LARGE THREAD SERIES TYPE. For 1978 to 85 300SD Turbos / 1980 to 93 240D / 300D 300TD 300CD 190D 300SD 300SDL 350SDL. When was the last time your glow plug chambers were reamed out?

$16.95

Early Diesel Fast Glow Plug

Upgrade to better glow plugs for 1969 to 1979 220D 240D and 300D

New German made fast heat glow plug designed to replace the series loop tip style glow plugs that were installed in all non-turbo diesel engines up to 1979. These have the large thread built in so they will install directly into the older heads.

Diesel Purge Injection System Cleaner H. D.
$39.50

Diesel Purge Injection System Cleaner kit with Instructions

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

Can only be shipped UPS GROUND. NO INTERNATIONAL. Extra packaging charges may apply. It some cases it may be shipped in its own box depending on the size of your order and the other products included.

On Demand Video
$2.99

1977 to 1985 Mercedes Diesel Oil Change Procedure the Easy Way - On Demand Video

Do your oil changes yourself to make certain they get done properly with the correct oil!

Doing your own diesel oil changes is not difficult.  Granted you won't save a lot of money, but it will get you to regularly inspect your engine for oil leaks, etc and it will guarantee the job gets done right.

On Demand Video
$4.99

Waking Up An Old Benz That Has Sat For Years Part 1 - On Demand Video

Kent covers what you may have to do first with the engine and fuel system

When an old Mercedes ( or any other car for that matter ) has sat idle for over a year it can be a challenge to get it safely back on the road again. If it has sat idle for more than 5 years you may find it difficult to even get the engine running. 

On Demand Video
$4.99

Abnormal Diesel Engine Noise Troubleshooting - On Demand Video

How to determine if the engine noise is external or internal

Diesel engines make noise. Some ticking and rattling is normal and not something you should be concerned about. Certain loud knocking or rattling noises could be a sign that something bad is happening to the engine, especially if the noise comes on suddenly.

$54.20

W123 Chassis 5-Cylinder Non-Turbo Diesel Motor Mount Kit

For all non-turbo 300D 300CD 300TD models 1977 to 1981 includes transmission mount

Have you noticed your Mercedes diesel sedan is recently shaking more at idle. Maybe you are noticing new vibrations that were not there before. You may have also noticed the engine makes some clunking noise when you shut it off. When was the last time your rubber motor mounts were changed.

$228.00
Currently out of stock.

617 Diesel Garrett T3 Turbocharger 200K High Performance Overhaul Kit

CURRENTLY IN PRODUCTION AT FACTORY ---- ESTIMATED DELIVERY TIME JANUARY 2026

For 5 cylinder Garrett turbos on 300SD 300D 300CD and 300TD 1978 to 1985. Buy the complete kit and save! If your Garrett T3 turbo has over 200K Kent highly recommends you plan on doing the complete overhaul.

$99.50
Currently out of stock.

123 116 126 Diesel Fuel Tank Screen Removal and Replacement Kit

GENUINE OEM FUEL TANK SCREEN -- ALL AFTERMARKET BRANDS DISCONTINUED.

Fits all 116 diesel 300SD, and 123 240D 300D and 300CD and all 126 chassis diesels 300SD 300SDL 350SD/L. 1977 to 1991 (Does not fit wagons!). Wiill NOT work on 107 chassis. Receive a Related Bonus-Product FREE!

$12.90

W201 W124 Coolant Reservoir Pressure Cap

Losing small amounts of coolant? This may be the problem.

This fits all 201 chassis 190E and 190D from 1984 to 1993 and all 124 chassis sedans, coupes and wagons from 1986 to 1995 both gas and diesel. Visually check the condition of the seal on the underside of the cap.

$29.60

1977 to 1985 Diesel Oil Filter Housing Cap Stud Repair Kit

Includes the parts and tools you will need to fix this permanently with profession looking results

If you discover a stud loose when doing an oil change on your 1977 240D 300D 300TD 300SD here is the kit you will need to fix it properly. Even comes with new semi-locking cap nuts. Watch Kent's YouTube video below to learn more. 

The kit comes with the following:

$88.75

2007 to 2012 GL450 GL550 V8 Front Engine Pesky Leaks Fix Kit

100K Service: Solve THREE common engine fluid leaks while servicing your power steering fluid and filter at the same time.

Watch the YouTube video below for full details. Kent will tell you everything about this kit and why you should do this joy yourself around 100,000 miles

This kit includes the following:

$65.00

2007 to 2012 GL450 GL550 Power Steering Filter and Fluid Change Kit

For only those models with the M273 V8 engine. This is a highly neglected service!

This DIY job is very important for a number of reasons. Changing the fluid and the filter every 40k to 50k will extend the life of your power steering pump and steering rack. Changing out the reservoir will allow you to replace the seal between the tank and the pump.

$44.50

V8 Gas and Early Diesel Engine Timing Chain Guide Rail Pin Removal Tool

New Version 2. For 3.5 4.5 380 420 500 560 V8s - 220D 240D 300D 300CD 300TD 300SD

This is a must-have tool if you own a 1970 to 1991 M116 or M117 V8 engine. It will also work on older six-cylinder gas and four and 5-cylinder engines from the 1960s up through 1985. Note: The included video instructions only cover removal and installation of the pin.

On Demand Video
$12.99

Replacing Rear O-ring Seal in Older ZF Power Steering Pump - On Demand Video

Aluminum ZF pump only in 1980's - Mostly on OM616 and OM617 Diesel engines.

Kent's instructions for replacing the real seal in this style pump. Make sure your pump is all aluminum ZF pump, or this seal will not work. Total run time: 14 minutes. An 8-inch C-clamp will be required to complete the installation. 

$399.00

2005 to 2013 M272 V6 100K Forget-Me-Not Complete Service Kit

Kent put together this DIY preventative 100K maintenance kit to improve reliability and increase the life of your V6 engine.

These are all maintenance issues that a lot of shops miss. If you want your M272 to break down or lose performance after 100K, then just ignore these items. We are talking prevention here - not waiting until something breaks to fix it! This is a DIY SUPER KIT.

$150.00

1981 to 1985 W126 300SD Oil Cooler Hoses Upper and Lower - USED

Came off a running engine with no leaks. Good threads and appear to have been replacements along the way

These have been tested. Removed from a running engine. No leaks or wetness around the fittings. No belt wear marks on the hoses. Only fits 126 300SD.

$250.00

1981 to 1984 W126 300SD Complete Exhaust System - USED

Low mileage and in excellent condition. No weak metal and no leaks. Will not ship. Must be picked up in Bellingham, Wa.

DO NOT try to check out. Contact us via email  (sales@mercedessource.com) if you wish to purchase, and we will arrange payment and discuss pickup options. It is very hard to find one this good, so we are offering it for sale even though it will require a pickup truck to come and get it.

$75.00

1977 240D Oil Filter Hosing Complete - Excellent Used.

Only for VERY early W123 240D with the single center-bolt cap as shown below.

We have only seen one of these, and it came off a 150,000 mile 1977 240D. I am sure it would fit the 1978 and 1979 240D, but it would not be original. Study the pictures carefully. Note the different cap designs with long center bolt. BUPS

$76.00

W126 300SD Turbo Diesel LEFT Side Motor Mount Arm ( Used )

Fits 1981 to 1985 126 turbo diesels only. No corrosion and excellent motor mount bolt threads

Excellent used driver-side motor mount arm with excellent bolt mount threads. If your threads are damaged or the bolt broke in the threads replacement is the best solution.. Please take a look below for the passenger side. 

$65.00

Ponton 190, 219, and 220S Mechanical Fuel Pump and Parts Lot - USED

Study the pictures carefully to make sure your pump is the same.

Late 1950's carburated engine fuel pumps and parts as shown.  What you see here is exactly what you will receive. Two of the pumps were taken apart to check the internal condition and put back together (Dec. 2024). Sold as is - not warranty - and they are not returnable. 

$57.50

300D 300CD 300TD 300SD Genuine Turbo Alternator Adjusting Bolt and Nut

BETTER THAN OE! For OM617 turbo engines from 1981 to 1985. Custom machined and welded in our shop with a much stronger threaded adjusting shaft than the original

This is a very common failure item on the OM617 turbo diesel engines. There are two reasons why it bends or strips. 1) The original threaded adjusting rod is made of a VERY soft metal.

On Demand Video
$16.99

M272 v6 M273 V8 Oil Separator Replacement Instructions - On Demand Video

Convers both the mid-range separator on the left side of the engine and the full throttle separator on the right side.

This critical maintenance item should be done every 40K to 50K miles - BUY it does not get done. In this xx-minute video, Kent will show you how to properly replace both oil separators without screwing up and breaking something inside the engine.

On Demand Video
$9.99

M272 V6 M273 V8 Thermostat Replacement Procedures - On Demand Video

The thermostat is slightly different, but the procedures apply to all V6 and V8 title designation engines from 2006 to 2013

In this 10-minute instructional video, Kent will show you the location of the thermostat on both engines, explain why they should be replaced every 40,000 to 50,000 miles, and wrap up with installation tips that should help you do it yourself.

On Demand Video
$14.99

M272 M273 Drive Belt and Accessory Inspection and Replacement - On Demand Video

This applies to all 272 V6 and 273 V8 engines from 2006 to 2013. A must 100K inspection service.

In this 19-minute instructional video, Kent will walk you through the process of removing the drive belt, explain what you should inspect at the front of your engine, and show you how to install the parts that always seem to wear out around 100K miles.

$59.95

M273 V8 Thermostat DIY Replacement Kit

Common failure item. Change at 40,000 to 50,000 miles to avoid problems. PARTIAL Video instructions included.

This is not a difficult part to replace, but it does require you to remove the belt and one pulley. A good time to replace this part is at the 80 to 100K inspection interval since you will already be removing / replacing the belt and pulleys.

$62.50

M272 V6 Thermostat DIY Replacement Kit

Common failure item. Change at 40,000 to 50,000 miles to avoid problems. Video Instructions included.

Failure is more common and happens more often with these thermostats due to the internal temperature probe that goes down through the center of the housing. It is much better to replace this as a preventative measure to prevent engine overheating. 

$99.50

M272 V6 M273 V8 Drive Belt and Pulley Replacement Kit w/ Kent's Tool

SPECIAL! Like clockwork, these parts always show signs of wear at 80,000 to 100,000 miles. Replace them BEFORE they actually fail and leave you stranded.

Yes, that is correct. These are the same parts on all 272 V6 and 273 V8 from 2006 to 2013. That is a few million cars that are now all aging, and many have not had these parts replaced. I am not sure why many shops do not even recommend this service before something fails! WARNING!

$32.85

M272 V6 Rubber Breather Hose Replacement Kit

Fits all M272 V6 engines from 2006 to 2013. Replace them when they become hard or cracked.

I recommend that the oil separators on the M272 and M273 engines  be changed every 40K miles to prevent excess oil from entering your intake manifold.

$36.60

M273 V8 Rubber Breather Hose Replacement Kit

Fits all M273 V8 engines from 2007 to 2012. Replace them when they become hard or cracked.

I recommend that the oil separators on the M272 and M273 engines be changed every 40K miles to prevent excess oil from entering your intake manifold.

$112.00

M113 V8 Mass Air Flow Sensor

New Bremi premium part. This can give you a boost in mileage and power

Fits most M113 V8 Mercedes from 2000 to 2006 included the S500, E500, and SL500. If this part fails, you will get a check engine light and a specific P code.

$72.10

2006 to 2012 M273 V8 Oil Separator Replacement Kit

Includes both normal and high-speed V8 oil separators with extras. Should be changed every 40,000 to 50,000 miles.

How do you know if these parts need replacing? If you have driven 50,000 miles since it was installed or last changed then they need to be replaced to prevent oil from entering your intake manifold.

$65.50

2006 to 2013 M272 V6 Oil Separator Replacement Kit

Includes both normal and high-speed V6 oil separators with extras. Should be changed every 40,000 to 50,000 miles.

How do you know if these parts need replacing? If you have driven 50,000 miles since it was installed or last changed then it needs to be done to prevent oil from entering your intake manifold.

$19.85

2005 to 2013 M272 V6 Intake Elbow to Throttle Body Orange Seal

This is neglected on almost every newer gas engine I see. Replace this during throttle body inspection and cleaning.

You do the throttle body cleaning service, and you might be surprised at the results. When does this ever get done? I have experienced smoother idle, less stumbling, more power, and better fuel economy from just doing this easy and inexpensive service.

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