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Mercedes S123 250 T 2.5 Alternator (129 hp Petrol M 123.921)

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4G0149P Alternator Mercedes-Benz 123-Series 250T (123.086) 129 hp 95 kW M 123.921 1978 S123 RIDEX PLUS 4G0149P MERCEDES-BENZ W123 Estate (S123) 250T (123.086) Alternator 129 hp Petrol 1979 cost RIDEX PLUS 4G0149P Alternator
RIDEX PLUS 4G0149P Alternator 12V, 55A, B+ (M6), B+ B+ D+ W, excl. vacuum pump, Ø 66 mm
Article number: 4G0149P
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  • Alternator Charging Current [A]: 55
  • Voltage [V]: 12
  • Pulleys: with belt pulley
  • Rated Voltage [V]: 14
  • Engine Code: M123.921
  • Belt Pulley Ø [mm]: 66
  • Number of grooves: 1
  • Plug Type ID: B+ B+ D+ W
  • Vehicle Main Current: for vehicles with 12V main current
  • Rotation Direction: Clockwise rotation
  • Alternator Type: excl. vacuum pump
  • Fastening Type: Single pivoted lever
  • Clamp: B+ (M6)
  • Bore Diameter 1 [mm]: 10
  • Number of mounting bores: 2
  • Number of threaded holes 0
  • Distance from belt pulley to alternator [mm]: 77
  • Item number: 4G0149P
  • Our price: €83.99
  • Manufacturer: RIDEX PLUS
  • EAN number: 4067448818471
  • Condition: New
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€83.99
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price incl. 23% VAT

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    • Construction Year to: 09 / 1979
    • Engine Code: 123.920
    • Transmission Code: 716.006
    • Transmission Type: Manual Transmission
  • Alternator Charging Current [A]: 65
  • Voltage [V]: 12
  • Pulleys: with belt pulley
  • Rated Voltage [V]: 14
  • Belt Pulley Ø [mm]: 70,0
  • Number of grooves: 1
  • Vehicle Main Current: for vehicles with 12V main current
  • Alternator Type: excl. vacuum pump
  • Fastening Type: Single pivoted lever
  • Clamp: B+,D+,W
  • Bore Diameter 1 [mm]: 10,5
  • Number of mounting bores: 2
  • Number of threaded holes 0
  • Distance from belt pulley to alternator [mm]: 77,5
  • Item number: 4G1417
  • Our price: €104.99
  • Manufacturer: RIDEX
  • EAN number: 4066016900501
  • Condition: New
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In stock
€104.99

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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: CAL10118AS
  • Our price: €101.49
  • Manufacturer: CASCO
  • EAN number: 2248410876331
  • Condition: New
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In stock (Item(s) left: 2)
€101.49

price incl. 23% VAT

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  • Alternator Charging Current [A]: 55
  • Voltage [V]: 12
  • Pulleys: with belt pulley
  • Rated Voltage [V]: 14
  • Engine Code: M123.921
  • Belt Pulley Ø [mm]: 66
  • Number of grooves: 1
  • Plug Type ID: B+ B+ D+ W
  • Vehicle Main Current: for vehicles with 12V main current
  • Rotation Direction: Clockwise rotation
  • Alternator Type: excl. vacuum pump
  • Fastening Type: Single pivoted lever
  • Clamp: B+ (M6)
  • Bore Diameter 1 [mm]: 10
  • Number of mounting bores: 2
  • Number of threaded holes 0
  • Distance from belt pulley to alternator [mm]: 77
  • Item number: SKGN-0320148
  • Our price: €116.49
  • Manufacturer: STARK
  • EAN number: 4059191442423
  • Condition: New
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In stock (Item(s) left: 4)
€116.49
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BV PSH 555.005.055.010 Alternator 12V, 55A, B+ (M6), Ø 82,0 mm
Article number: 555.005.055.010
Reviews - 2
  • Alternator Charging Current [A]: 55
  • Voltage [V]: 12
  • Belt Pulley Ø [mm]: 82,0
  • Number of grooves: 1
  • Clamp: B+ (M6)
  • Quality: +Line Original
  • Number of mounting bores: 2
  • Mounting Angle [degrees]: -60
  • Item number: 555.005.055.010
  • Our price: €116.99
  • Manufacturer: BV PSH
  • EAN number: 8720264084258
  • Condition: New
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In stock (Item(s) left: 3)
-32%
compared to RRP €173.53

€116.99

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LUCAS LRA00823 Alternator 12V, 55A, Plug, 0001, Ø 70 mm
Article number: LRA00823
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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]: 4,6
  • Length 4 [mm]: 56,0
  • Item number: LRA00823
  • Our price: €117.49
  • Manufacturer: LUCAS
  • EAN number: 5708279018362
  • Condition: Remanufactured
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In stock (Item(s) left: 5)
€117.49

price incl. 23% VAT

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A core charge of €32.10 (incl. 23% VAT) is NOT included in the price and will be refunded to the customer when the old part is returned
    • Construction Year to: 09 / 1979
    • Engine Code: M 123.920
    • Transmission Type: 4-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: €120.49
  • 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
In stock (Item(s) left: 1)
€120.49

price incl. 23% VAT

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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
3120546 Alternator Mercedes-Benz 123-Series 250T (123.086) 129 hp 95 kW M 123.921 1979 S123 Sample photo only Henkel Parts 3120546 Mercedes S123 250T (123.086) Generator 129 hp Petrol 1978 cost
Henkel Parts 3120546 Alternator 12V, 55A
Article number: 3120546
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  • Alternator Charging Current [A]: 55
  • Voltage [V]: 12
  • Number of ribs: 1
  • Vehicle Main Current: for vehicles with 12V main current
  • Quality: Standard Neuteil
  • Item number: 3120546
  • Our price: €121.49
  • Manufacturer: Henkel Parts
  • EAN number: 4063214231192
  • Condition: New
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In stock
€121.49

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    • Construction Year to: 09 / 1979
    • Engine Code: 123.920
    • Transmission Code: 716.006
    • Transmission Type: Manual Transmission
  • Alternator Charging Current [A]: 65
  • Voltage [V]: 12
  • Pulleys: with belt pulley
  • Rated Voltage [V]: 14
  • Belt Pulley Ø [mm]: 70,0
  • Number of grooves: 1
  • Vehicle Main Current: for vehicles with 12V main current
  • Alternator Type: excl. vacuum pump
  • Fastening Type: Single pivoted lever
  • Clamp: B+,D+,W
  • Bore Diameter 1 [mm]: 10,5
  • Number of mounting bores: 2
  • Number of threaded holes 0
  • Distance from belt pulley to alternator [mm]: 77,5
  • Item number: SKGN-03221640
  • Our price: €121.99
  • Manufacturer: STARK
  • EAN number: 4066016900495
  • Condition: New
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In stock
€121.99

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HELLA 8EL 011 711-681 Alternator 14V, 55A, Ø 69 mm
Article number: 8EL 011 711-681
Reviews - 12
  • Alternator Charging Current [A]: 55
  • Voltage [V]: 14
  • Pulleys: with belt pulley
  • Belt Pulley Ø [mm]: 69
  • Number of grooves: 1
  • Used part return not required
  • TecDoc Engine Number: M 123.921
  • New part without deposit
  • Assy. / disassy. by qualified personnel required!
  • Item number: 8EL 011 711-681
  • Our price: €122.99
  • Manufacturer: HELLA
  • EAN number: 4082300335750
  • Condition: New
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In stock
-51%
compared to RRP €254.86

€122.99

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ELSTOCK 28-0675 Alternator 12V, 55A, Plug, 0001, Ø 70 mm
Article number: 28-0675
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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
  • Length [mm]: 22,0
  • Net weight [kg]: 4,6
  • Length 4 [mm]: 56,0
  • Item number: 28-0675
  • Our price: €122.99
  • Manufacturer: ELSTOCK
  • EAN number: 5708114008831
  • Condition: Remanufactured
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In stock (Item(s) left: 2)
€122.99

price incl. 23% VAT

excl. delivery costs

A core charge of €30.91 (incl. 23% VAT) is NOT included in the price and will be refunded to the customer when the old part is returned
AS-PL A0069 Alternator 12V, 55A
Article number: A0069
Reviews - 1
  • Alternator Charging Current [A]: 55
  • Voltage [V]: 12
  • Manufacturer Restriction: BOSCH
  • Pulleys: with belt pulley
  • Quality: STANDARD LINE
  • Version: 0120489556
  • New part without deposit
  • Item number: A0069
  • Our price: €122.99
  • Manufacturer: AS-PL
  • EAN number: 5901259400991
  • Condition: New
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In stock
-36%
compared to RRP €192.46

€122.99

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AS-PL A0393 Alternator 12V, 65A
Article number: A0393
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  • Alternator Charging Current [A]: 65
  • Voltage [V]: 12
  • Manufacturer Restriction: BOSCH
  • Pulleys: with belt pulley
  • Diameter [mm]: 73,00
  • Quality: STANDARD LINE
  • New part without deposit
  • Item number: A0393
  • Our price: €123.49
  • Manufacturer: AS-PL
  • EAN number: 5901259490732
  • Condition: New
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In stock
-36%
compared to RRP €194.85

€123.49

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STARDAX STX100142R Alternator 12V, 55A, Ø 70 mm
Article number: STX100142R
Reviews - 1
  • Alternator Charging Current [A]: 55
  • Voltage [V]: 12
  • Pulleys: with belt pulley
  • Engine Code: M123.921
  • Belt Pulley Ø [mm]: 70
  • Number of ribs: 1
  • Number of grooves: 1
  • Exchange Part
  • Item number: STX100142R
  • Our price: €134.49
  • Manufacturer: STARDAX
  • EAN number: 226382186053751860537
  • Condition: New
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In stock
€134.49

price incl. 23% VAT

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A core charge of €26.86 (incl. 23% VAT) is NOT included in the price and will be refunded to the customer when the old part is returned
BV PSH 906.002.055.010 Alternator 24V, 55A, B+ (M8), Ø 116,0 mm
Article number: 906.002.055.010
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  • Alternator Charging Current [A]: 55
  • Voltage [V]: 24
  • Belt Pulley Ø [mm]: 116,0
  • Number of grooves: 2
  • Clamp: B+ (M8)
  • Quality: +Line Original
  • Number of mounting bores: 3
  • Mounting Angle [degrees]: 22
  • Item number: 906.002.055.010
  • Our price: €148.49
  • Manufacturer: BV PSH
  • EAN number: 8720264049912
  • Condition: New
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In stock
-32%
compared to RRP €219.12

€148.49

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HC-Cargo 110358 Alternator 14V, 55A, PL22, Ø 70,0 mm
Article number: 110358
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  • Alternator Charging Current [A]: 55
  • Voltage [V]: 14
  • Pulleys: with belt pulley
  • Belt Pulley Ø [mm]: 70,0
  • Number of grooves: 1
  • Plug Type ID: PL22
  • Rotation Direction: Clockwise rotation
  • Length [mm]: 162,50
  • Item number: 110358
  • Our price: €175.99
  • Manufacturer: HC-Cargo
  • EAN number: 2248198843502
  • Condition: New
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€175.99

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A core charge of €8.95 (incl. 23% VAT) is NOT included in the price and will be refunded to the customer when the old part is returned
ERA 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: €187.99
  • Manufacturer: ERA
  • EAN number: 2223414552600
  • Condition: New
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WAL00386 Alternator Mercedes-Benz 123-Series 250T (123.086) 129 hp 95 kW M 123.921 1979 S123 WALKER WAL00386 Mercedes S123 250T (123.086) Alternators 129 hp Petrol 1978 cost
WALKER WAL00386 Alternator 12V, 55A, Plug, 0001, Ø 70 mm
Article number: WAL00386
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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]: 4,6
  • Item number: WAL00386
  • Our price: €202.00
  • Manufacturer: WALKER
  • EAN number: 4060426560607
  • Condition: New
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€202.00

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0 986 030 360 Generator Mercedes-Benz 123-Series 250T (123.086) 129 hp 95 kW M 123.921 1978 S123 Sample photo only BOSCH 0986030360 MERCEDES-BENZ W123 Estate (S123) 250T (123.086) Alternator 129 hp Petrol 1979 cost
BOSCH 0 986 030 360 Alternator
Article number: 0 986 030 360
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  • Exchange Part
  • Recommended additional repairs: V-Belt / V-Ribbed Belt
  • Item number: 0 986 030 360
  • Our price: €46.49
  • Manufacturer: BOSCH
  • EAN number: 2230130418300
  • Condition: Remanufactured
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€46.49

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  • Alternator Charging Current [A]: 55
  • Voltage [V]: 12
  • Pulleys: for v-belt pulley
  • Rated Voltage [V]: 14
  • Belt Pulley Ø [mm]: 69
  • Number of grooves: 1
  • Vehicle Main Current: for vehicles with 12V main current
  • Rotation Direction: Clockwise rotation
  • Alternator Type: excl. vacuum pump
  • usable for vehicles with alternator charging current [A]: 55
  • Fastening Type: Single pivoted lever
  • Clamp: D+,B+(9,8)
  • Number of mounting bores: 2
  • Number of threaded holes 0
  • Connector Shape: angular
  • Quantity Unit: Piece
  • Item number: SKGN-03222182
  • Our price: €57.99
  • Manufacturer: STARK
  • EAN number: 4067448328338
  • Condition: New
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€57.99

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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 €46.49 and €202.

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) 95 kW / 129 hp and replace it.

Which alternator do I need for a Mercedes S123 250 T (123.086) Petrol (Intake Manifold Injection/ Carburettor) 1978 - 1979?

Alternator output current [A] 55; 65
Pulley diameter [mm] 66; 69; 70; 72; 75; 82; 116
Pulleys for v-belt pulley; with belt pulley
Weight [kg] 4.902
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