Bosch warm-up regulator 0438140065 K-Jetronic Mercedes W123 230E 230CE 230TE 230 GE
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Refurbished Bosch warm-up regulator for the K-Jetronic. Bosch warm-up regulator 0438140065 for the K-Jetronic of the Mercedes-Benz model series W123/C123/S123 (230 E, 230 CE, 230 TE) and the G-Class W460 230 GE with M102 engine. The regulator was completely disassembled, cleaned and set on the test bench to Bosch specification.
Completely disassembled and cleaned · New diaphragm, heating resistor and seals · 5-year warranty
Control pressure ✓Springs ✓
The control pressure was set on the test bench to Bosch specification and the pressure values were logged; the springs were checked and replaced if necessary.
5-year warranty on this refurbished warm-up regulator
If there is a problem: send the regulator in – we will repair or replace it. In addition, a 60-day return policy and free shipping within Germany apply.
♻ Old-part bonus: 50 € back for your old regulator
Buy this regulator at the regular price, install it at your leisure and then send us your old Bosch warm-up regulator – even if defective, as long as it is complete. After receipt, we refund you 50 € to your payment method. Simply register your old part within 60 days on our buyback page – all conditions are listed there as well.
| Your options | Condition | Warranty |
|---|---|---|
| New part from Bosch | no longer manufactured | – |
| Untested used regulator | Control pressure and diaphragm condition unknown | none |
| Refurbished genuine part (this listing) | disassembled, new diaphragm and heating resistor, set on the test bench | 5 years ✓ |
How can you tell a warm-up regulator is defective?
The warm-up regulator sits in the fuel circuit of the Bosch K-Jetronic between the fuel distributor and the control pressure line and is bolted to the engine block. It regulates the control pressure depending on engine temperature and thus ensures correct mixture enrichment during cold running.
The control pressure is lowered via a heated bimetal element, which raises the control pressure again as operating temperature increases. If this element or the heating winding is defective, the control pressure is no longer regulated correctly during cold running and the mixture enrichment is wrong.
Detailed diagnostic instructions in the guide: Warm-up regulator W123 230 E: which end number fits
What was done during refurbishment
- Complete disassembly into all individual parts
- Cleaning in an ultrasonic bath
- New diaphragm installed
- New heating resistor installed
- Springs checked and replaced if necessary
- All seals replaced
- Set on the test bench to Bosch specification, pressure values logged
- Delivered with new copper sealing rings
Fits the following vehicles
Model series W123 / C123 / S123 (4/1980 – 12/1985, M102.980 engine, 2.3 l, 100 kW / 136 PS)
- 230 E sedan (123.223)
- 230 CE Coupe (123.243)
- 230 TE wagon (123.283)
G-Class W460 (4/1982 – 8/1985, M102.981 engine, 2.3 l, 92 kW / 125 PS)
- 230 GE
- Puch G 230 GE (identical in construction)
The Bosch exchange number 0438140146 is identical to our number and directly interchangeable.
Part numbers: Bosch 0438140065 · Mercedes 102 070 01 62 · Mercedes 000 070 20 62 · exchange number 0438140146
⚠ Important: compare the part number before buying
Three different warm-up regulators were fitted to the M102 engine over its production run. This regulator carries the end number -065 (Mercedes number 102 070 01 62 or 000 070 20 62); the variants -097 (Mercedes 102 070 02 62) and -100 (Mercedes 102 070 03 62) are different versions. The Bosch exchange number 0438140146 corresponds to this number and is directly interchangeable. Compare the number on your old part 1:1 before you order.
Does not fit:
- Vehicles with KE-Jetronic, for example W124 230 E from 1985 – there an electrohydraulic actuator takes over this task, no warm-up regulator is fitted
- W460 230 GE from 9/1985 with KE-Jetronic
- Six-cylinder M110 (280 E, 280 CE, 280 SE, 280 SEL, 280 SL, 280 SLC, 280 GE) – those use 0438140057, 0438140067 or 0438140103
- V8 models (380, 450, 500, 560) – their own regulator variants
- Carburetor models 230, 230 C, 230 T with M115 engine – no injection system
- Diesel models (200 D, 240 D, 300 D, 300 TD) – no warm-up regulator present
Does this part fit your car? Send us the VIN (chassis number) and model year – we'll check it for free: +49 179 8991069 (Mon–Fri 8 am–6 pm) or via our contact form.
FAQ
What warranty is provided?
5-year warranty on this refurbished regulator. If there is a problem, send it in – we will repair or replace it. In addition, a 60-day return policy and free shipping within Germany apply.
Does the regulator fit my vehicle?
Compare the part number on your old regulator 1:1 with the number given here. If you are unsure, we will check the fit for free using your VIN and model year.
What was done to the regulator?
The regulator was completely disassembled, cleaned in an ultrasonic bath and fitted with a new diaphragm, a new heating resistor and new seals. It was then set on the test bench to Bosch specification and the pressure values were logged. It is delivered with new copper sealing rings.
Why not a new part?
Bosch no longer supplies new warm-up regulators. That is why we rely on refurbishing genuine parts.
KFZTeile-Thot specializes in spare parts for Mercedes classic cars and classics – with in-house refurbishment for Bosch K-Jetronic components.
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