Mercedes S123 250 2.5 Alternator (140 hp Petrol M 123.921)
85 items
VALEO REMANUFACTURED PREMIUM 436121 Alternator 14V, 55A, B+ / B+ / D+, L 60, Ø 75 mm
Article number: 436121
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-
- Construction Year from: 09 / 1979
- Engine Code: M 123.921
- Transmission Type: 5-Speed Manual Transmission
- Alternator Charging Current [A]: 55
- Voltage [V]: 14
- Product line: REMANUFACTURED PREMIUM
- Belt Pulley Ø [mm]: 75
- Number of ribs: 1
- Exchange Part
- Position / Degree: L 60
- Rotation Direction: Clockwise rotation
- Fastening Type: Double Pivot Lever
- Clamp: B+ / B+ / D+
- Weight [kg]: 4,902
- Item number: 436121
- Our price: 127,57 €
- Manufacturer: VALEO
- EAN number: 3276424361219
- Condition: Remanufactured
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Contents of the Alternator VALEO set:
Description of the product
Units
Article number
Alternator
1
9AR2759K
Alternator
1
9AR2784
Alternator
1
9AR2785
Alternator
1
9AR2846
Alternator
1
9AR5028K01
Details
Сurrently out of stock
127,57 €
price incl. 23% VAT
excl. delivery costs
A core charge of 61,50 € (incl. 23% VAT) is NOT included in the price and will be refunded to the customer when the old part is returned
MAGNETI MARELLI 063733140010 Alternator 14V, 65A, PL22, excl. vacuum pump, Ø 73 mm
Article number: 063733140010
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- Alternator Charging Current [A]: 65
- Voltage [V]: 14
- Pulleys: with belt pulley
- Belt Pulley Ø [mm]: 73
- Plug Type ID: PL22
- Alternator Type: excl. vacuum pump
- Diameter [mm]: 70
- TecDoc Engine Number: M 123.921
- Item number: 063733140010
- Our price: 131,93 €
- Manufacturer: MAGNETI MARELLI
- EAN number: 8050947032260
- Condition: New
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Details
Сurrently out of stock
-53%
compared to
RRP 286,71 €
131,93 €
price incl. 23% VAT
excl. delivery costs
VEMO Original Quality V30-13-30720 Alternator 14V, 55A
Article number: V30-13-30720
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- Alternator Charging Current [A]: 55
- Voltage [V]: 14
- Product line: Original Quality
- Engine Code: M123.921
- New Part
- Weight [kg]: 4,24
- New part without deposit
- Packaging width [cm]: 23,5
- Packaging height [cm]: 22
- Item number: V30-13-30720
- Our price: 134,01 €
- Manufacturer: VEMO
- EAN number: 4046001325571
- Condition: New
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Details
NK 4830721 Alternator 12V, 55A, Plug, 0001, Ø 70 mm
Article number: 4830721
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- Alternator Charging Current [A]: 55
- Voltage [V]: 12
- Belt Pulley Ø [mm]: 70
- Number of ribs: 1
- Plug Type ID: 0001
- Vehicle Main Current: for vehicles with 12V main current
- Clamp: Plug
- Bore Diameter 1 [mm]: 10
- Net weight [kg]: 5,35
- Item number: 4830721
- Our price: 134,22 €
- Manufacturer: NK
- EAN number: 5700755261552
- Condition: New
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EAI 55773 Alternator 12V, 55A, with integrated regulator
Article number: 55773
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- Alternator Charging Current [A]: 55
- Voltage [V]: 12
- Pulleys: with belt pulley
- Number of ribs: 1
- Supplementary Article / Supplementary Info: with integrated regulator
- Rotation Direction: Clockwise rotation
- Connector / Clamp: without connection for speed sensor
- Diameter [mm]: 82
- Technical Information Number: C01
- Drive Shaft: with ABS ring
- Item number: 55773
- Our price: 142,35 €
- Manufacturer: EAI
- EAN number: 3596405577300
- Condition: New
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Details
Сurrently out of stock
142,35 €
price incl. 23% VAT
excl. delivery costs
A core charge of 56,25 € (incl. 23% VAT) is NOT included in the price and will be refunded to the customer when the old part is returned
MESSMER 210111A Alternator 14V, 55A, B+D+, Ø 72 mm
Article number: 210111A
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- Alternator Charging Current [A]: 55
- Voltage [V]: 14
- Belt Pulley Ø [mm]: 72
- Number of grooves: 1
- Plug Type ID: B+D+
- Rotation Direction: Clockwise rotation
- Number of mounting bores: 2
- Distance from belt pulley to alternator [mm]: 77
- Belts: without V-belt
- Item number: 210111A
- Our price: 144,98 €
- Manufacturer: MESSMER
- EAN number: 8053379003532
- Condition: New
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SANDO 2010118.0 Alternator 12V, 55A, CPA0007, with integrated regulator
Article number: 2010118.0
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- Alternator Charging Current [A]: 55
- Voltage [V]: 12
- Manufacturer Restriction: BOSCH
- Pulleys: with belt pulley
- Plug Type ID: CPA0007
- Supplementary Article / Supplementary Info: with integrated regulator
- Number of mounting bores: 2
- Manufacturer: MERCEDES-BENZ
- Item number: 2010118.0
- Our price: 152,12 €
- Manufacturer: SANDO
- EAN number: 2245929174957
- Condition: New
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Details

MAGNETI MARELLI 944346033010 Alternator 14V, 55A
Article number: 944346033010
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- Alternator Charging Current [A]: 55
- Voltage [V]: 14
- Pulleys: with belt pulley
- TecDoc Engine Number: M 123.921
- Item number: 944346033010
- Our price: 153,62 €
- Manufacturer: MAGNETI MARELLI
- EAN number: 8001063670546
- Condition: Remanufactured
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BOSCH 0 986 031 431 Alternator 14V, 55A
Article number: 0 986 031 431
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- Alternator Charging Current [A]: 55
- Voltage [V]: 14
- Exchange Part
- Recommended additional repairs: V-Belt / V-Ribbed Belt
- Item number: 0 986 031 431
- Our price: 157,26 €
- Manufacturer: BOSCH
- EAN number: 3165141037128
- Condition: Remanufactured
Details
PowerMax 89212592 Alternator 14V, 55A, Ø 66 mm
Article number: 89212592
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- Alternator Charging Current [A]: 55
- Voltage [V]: 14
- Belt Pulley Ø [mm]: 66
- Number of grooves: 1
- Distance of mounting bores [mm]: 56
- Distance from belt pulley to alternator [mm]: 77
- Item number: 89212592
- Our price: 166,97 €
- Manufacturer: PowerMax
- EAN number: 5713852398274
- Condition: New
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TESLA TECHNICS TT11506 PRO Alternator 12V, 55A, M8, L, Ø 70 mm
Article number: TT11506 PRO
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- Alternator Charging Current [A]: 55
- Voltage [V]: 12
- Pulleys: with belt pulley
- Belt Pulley Ø [mm]: 70
- Number of grooves: 1
- Clamp: M8, L
- remanufactured spare part (REMAN)
- Item number: TT11506 PRO
- Our price: 169,17 €
- Manufacturer: TESLA TECHNICS
- EAN number: 8436250218261
- Condition: New
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SNRA SE8005 Alternator 12V, 55A, with integrated regulator
Article number: SE8005
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- Alternator Charging Current [A]: 55
- Voltage [V]: 12
- Pulleys: with belt pulley
- Number of ribs: 1
- Supplementary Article / Supplementary Info: with integrated regulator
- Rotation Direction: Clockwise rotation
- Connector / Clamp: without connection for speed sensor
- Diameter [mm]: 73
- Technical Information Number: C01
- Item number: SE8005
- Our price: 170,92 €
- Manufacturer: SNRA
- EAN number: 3660089304610
- Condition: New
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Free delivery on this item
Сurrently out of stock
170,92 €
price incl. 23% VAT
A core charge of 56,25 € (incl. 23% VAT) is NOT included in the price and will be refunded to the customer when the old part is returned
VEMO V30-13-31400 Alternator 14V, 55A, Ø 66 mm, Q+, original equipment manufacturer quality MADE IN GERMANY
Article number: V30-13-31400
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-
- Construction Year from: 09 / 1979
- Engine Code: 123.921
- Transmission Code: 717.400
- Transmission Type: Manual Transmission
- Alternator Charging Current [A]: 55
- Voltage [V]: 14
- Supplementary Info: Q+, original equipment manufacturer quality MADE IN GERMANY
- Belt Pulley Ø [mm]: 66
- Number of ribs: 1
- New Part
- New part without deposit
- Packaging width [cm]: 23,5
- Packaging height [cm]: 22
- Item number: V30-13-31400
- Our price: 171,04 €
- Manufacturer: VEMO
- EAN number: 4046001477782
- Condition: New
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AD KÜHNER 3087RI Alternator 12V, 55A, PL22
Article number: 3087RI
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- Alternator Charging Current [A]: 55
- Voltage [V]: 12
- Engine Code: M 123.921
- Number of grooves: 1
- Plug Type ID: PL22
- Diameter [mm]: 69
- Item number: 3087RI
- Our price: 175,75 €
- Manufacturer: AD KÜHNER
- EAN number: 805622406943
- Condition: New
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BOSCH 0 986 031 430 Alternator 14V, 55A, B+(9,8),D+, PL22, excl. vacuum pump, Ø 77 mm
Article number: 0 986 031 430
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-
- Construction Year from: 09 / 1981
- Alternatively
- Alternator Charging Current [A]: 55
- Voltage [V]: 14
- Pulleys: with belt pulley
- Belt Pulley Ø [mm]: 77
- Number of grooves: 1
- Plug Type ID: PL22
- Exchange Part
- Rotation Direction: Clockwise rotation
- Alternator Type: excl. vacuum pump
- Fastening Type: Single pivoted lever
- Recommended additional repairs: V-Belt / V-Ribbed Belt
- Clamp: B+(9,8),D+
- Length [mm]: 165
- Distance from belt pulley to alternator [mm]: 78
- Item number: 0 986 031 430
- Our price: 219,32 €
- Manufacturer: BOSCH
- EAN number: 3165141019346
- Condition: Remanufactured
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Details
Free delivery on this item
Сurrently out of stock
219,32 €
price incl. 23% VAT
A core charge of 61,50 € (incl. 23% VAT) is NOT included in the price and will be refunded to the customer when the old part is returned

AD KÜHNER 3087RIR Alternator 12V, 55A, PL22
Article number: 3087RIR
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- Alternator Charging Current [A]: 55
- Voltage [V]: 12
- Number of grooves: 1
- Plug Type ID: PL22
- Diameter [mm]: 69
- Version: 3087RIR
- Item number: 3087RIR
- Our price: 235,15 €
- Manufacturer: AD KÜHNER
- EAN number: 8056224069448
- Condition: New
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BOSCH 0 120 489 547 Alternator
Article number: 0 120 489 547
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- Recommended additional repairs: V-Belt / V-Ribbed Belt
- Item number: 0 120 489 547
- Our price: 283,42 €
- Manufacturer: BOSCH
- EAN number: 40300120489547
- Condition: New
Contents of the Alternator BOSCH set:
Description of the product
Units
Article number
Rotor, alternator
1
1 124 034 786
Details
BOSCH 0 986 032 800 Alternator 14V, 55A
Article number: 0 986 032 800
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-
- Construction Year from: 09 / 1981
- Alternatively
- Alternator Charging Current [A]: 55
- Voltage [V]: 14
- Exchange Part
- Recommended additional repairs: V-Belt / V-Ribbed Belt
- Item number: 0 986 032 800
- Our price: 304,85 €
- Manufacturer: BOSCH
- EAN number: 3165141037890
- Condition: Remanufactured
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AD KÜHNER 30240RI Alternator 24V, 55A
Article number: 30240RI
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-
- Construction Year from: 09 / 1979
- Engine Code: 123.921
- Alternator Charging Current [A]: 55
- Voltage [V]: 24
- Item number: 30240RI
- Our price: 306,35 €
- Manufacturer: AD KÜHNER
- EAN number: 805622406497
- Condition: New
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BOSCH 0 120 489 917 Alternator 14V, 55A, excl. vacuum pump
Article number: 0 120 489 917
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-
- Construction Year from: 09 / 1981
- usable for vehicles with alternator charging current [A]: 55
- Alternator Charging Current [A]: 55
- Voltage [V]: 14
- Pulleys: without belt pulley
- Rotation Direction: Clockwise rotation
- Alternator Type: excl. vacuum pump
- Fastening Type: Single pivoted lever
- Recommended additional repairs: V-Belt / V-Ribbed Belt
- Length [mm]: 158,5
- Item number: 0 120 489 917
- Our price: 375,52 €
- Manufacturer: BOSCH
- EAN number: 3165142744131
- Condition: New
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Contents of the Alternator BOSCH set:
Description of the product
Units
Article number
Details
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What is the best alternator for a Mercedes-Benz W123 Estate (S123) 2525 ccm?
The best alternators for Mercedes S123 250 T (123.086) models are from the following original brands:
- RIDEX
- DENSO
- AS-PL
- BV PSH
- BOSCH
How much does an alternator for a MERCEDES-BENZ W123 Estate (S123) 250 T (123.086) cost?
The price of an alternator for the Mercedes S123 250 T (123.086) Petrol is typically between €127.57 and €375.52.
How to tell if the alternator on a Mercedes S123 250 T (123.086) is bad and what to do about it
If the alternator is not charging the battery properly, symptoms such as flickering lights or a loss of power may indicate a fault. The regulator, freewheel clutch and screws must be checked. If necessary, remove the alternator on the MERCEDES-BENZ W123 Estate (S123) 103 kW / 140 hp and replace it.
Which alternator do I need for a Mercedes S123 250 T (123.086) Petrol (Intake Manifold Injection/ Carburettor) 1978 - 1982?
Alternator output current [A] | 55; 65 |
Pulley diameter [mm] | 66; 70; 72; 73; 75; 77 |
Pulleys | with belt pulley; without belt pulley |
Weight [kg] | 4.24; 4.902 |
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