Search | W123 | Climate Control

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On Demand Video
Mercedes Monovalve Installation - On Demand Video
$9.99

Monovalve Heater Control Inspection - Installation - Testing - On Demand Video Manual

Covers 1981 to 1991 W123 W107 and W126 with automatic climate control panel

If you have a 1981 to 1985 W123 300D, 300CD, 280E, 280CE, 300TD or a 1981 to 1989 W107 380SL, 560SL, or a 1981 to 1991 W126 380SE/L 300SD 500SE/L 300SDL 420SE/L 300SE/L 560SE/L 380SEC 560SEC that has automatic climate control this video manual will apply. These c

$119.50

Late 123 Heater Blower Motor Assembly New

Fits U.S. Model W123 1980 to 1985

Brand New aftermarket heater blower motor. There are not many options for the 123 owners other than used. Many of the used heater motors out there are just worn out. This is a direct replacement ready to install under your dash.

$9.60

Coolant Hose Clamps for Most 1960 to 1995 Mercedes.

5/8" to 1" diameter which will fit most but not all heater core coolant hoses. Measures yours first before ordering.

6 "German style" non-cutting hose clamps as shown. These are wider than most to better seal the hose to the fitting.  See our other hose clamp assortments below.

On Demand Video
$12.99

1982 to 1991 107 123 126 Mono Valve Repair Kit Installation - On Demand Video

Easy DIY job to fix the most common problem with erratic cabin heat inside your old Benz.

Learn how to install this critical repair kit correctly and how to test your monovalve function on the bench. In this 13-minute video, Kent shares how to install the kit while avoiding problems. Get your cabin heat working properly again!

$26.40

Late R107, Late W123 and All W126 Heater Mono Valve Repair Kit

A torn diaphragm in the heater control monovalve is the number one reason for sporadic cabin heat, but it is not the only reason! With Kent's video tips, it is easy to install.

This fits the U.S. models with automatic climate control which include the 1982 to 1989 R107 380SL, 500SL, and 560SL + the 1982 to 1985 W123 ALL models + the 1981 to 1991 W126 sedan and coupes. This is an easy fix that you can do yourself.

On Demand Video
$14.99

1981 to 1991 Monovalve Climate Control Electric Water Pump Upgrade Installation Instructions - On Demand Video

How to install a newer style pump in your late W123, late R107 and W126 with ACCIII automatic climate control

In this 30-minute instructional video, Kent will explain how this new pump compares to the original, what is included in the kit and why, how to make a new plugin wiring harness, demonstrate step by step how to install this pump in a late W123 and explain the differences you will face when instal

On Demand Video
$12.99

How to Install our ACCIII Climate Control Performance Upgrade - On Demand Video

This applies to the 1981 to 1985 W123 and the 1982 to 1989 R107. Also indirectly to the W126

This an instructional "how-to" video that comes with our ACCIII performance upgrade it. It will show you how to install a protective fuse for your auxillary water pump and how to replace the rotton foam climate control hose under your dash. Total run time is 16:29.

$12.75

Late W123 Bosch Electric Auxiliary Water Pump BYPASS Kit

If the electric pump is not working and you don't want to replace it. GET IT OUT of your system!

Since the original style Bosch electric water pumps are no longer available NEW. If you need a replacement pump, you have three options. 1. Buy a used pump. 2. Buy our newer pump conversion upgrade. 3. Take your inoperable pump out of the system.

$18.95

1981 to 1985 ACCIII Climate Control Performance Enhancement Kit

Must do for 1981 to 1985 W123, W126 and R107 with automatic climate control. You won't believe what you find under your dash!!!

The parts in this little kit will do two things.  1. Protect your climate control push button panel. 2. The system will get more accurate readings from the climate control sensor on top of your dash.

PDF
$9.95

123 116 Heater Motor Repair By Kent Bergsma - Download

How to replace the brushes on most 123 and 116 Model years 1973-1985

For most 123 chassis cars made from 1977 to 1985 and all 116 chassis sedans built from 1973 to 1980 with the Behr Heater motor. This repair guide will take you through the process of how to properly remove your heater blower motor and replace the motors two brushes.

$675.00

1977 to 1981 ACC II Climate Control Servo Replacement - Modern Electronic Upgrade

Written instructions are included. Extra on-demand videos to help you understand the ORIGINAL are included at no extra charge ($25 value).

For US Models 116, 107, and 123 from 1977 to 1981 with Automatic Climate Control (Vertical Push Button Panel). New for 2023. Easy installation and excellent temperature regulation!

$14.95

Engine Coolant Temperature Sensor

SINGLE pin - located on left side of cylinder head by glow plugs on 1977 to 1985 OM616 and OM617 Diesel engines.

New coolant temperature sensor for most Mercedes built from 1973 to 1993, Gasoline and Diesel models. Many gas models it is located on top of the thermostat housing. Sends signal to engine coolant temperature gauge on the dashboard. These are getting harder to get. Single pin

Sale
$16.00

W123 W116 Chassis Heater and A/C Motor Brushes w/ PDF Instructions

WARNING: Does not fit all motors. Will NOT fit Seimens motors found on some 123 chassis

For *most 123 chassis cars made from 1977 to 1985 and *mostl 116 chassis sedans built from 1973 to 1980. The PDF repair guide will take you through the process of how to properly remove your heater blower motor and replace the motors two brushes.