Standard Alternator / Genarator

Alternator wiring harness loom for Motorola unit.

Fits:
Porsche 901 / 911 - 1964 to 1965

For Motorola alternator only

Harness from alternator to regulator with rubber terminal boot included. (Motorola)

(Only for 1964 901 and 1965 911)

As original coloured wiring.

Original neoprene terminal sleeves used, (no shrink wrap)

Very high quality flex automotive grade wiring, ISO6722:2002 / DIN72551/6 / EEC directive 2000/53

Gasoline, oil, battery acid, engine coolant resistant.

The high flex sleeving is very resistant to solvents, free of halogen, sulphur and phosphorous.

Special order made to order parts please allow 2 – 4 weeks

Handmade to concourse quality.

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90161203710

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OE Match alternator wiring loom for Porsche 901 / 911 models from 1969–73 equipped with Bosch alternators. This replacement harness serves the wiring connection between the alternator and voltage regulator.

Fits

• Porsche 911 1969-73
  
  

Check fitment for your specific vehicle (model, year, engine) before ordering.

What This Product Does

The loom groups the electrical connections associated with the alternator and regulator. It is a wiring component, rather than a replacement alternator or voltage regulator, and is intended for repairs involving damaged or deteriorated charging-system wiring.

Functions

• Connects the Bosch alternator and regulator wiring.
• Groups the associated conductors into a harness.
• Provides a replacement for deteriorated wiring during electrical repairs or restoration.
  
  

Technical Details

• Part number: 90161203720.
• Brand: OE Match.
• Application: Bosch alternator wiring.
• Internal diagram description: wiring harness NR. 2 0, regulator/generator, Bosch.
  
  

Symptoms of Fault

• Charging that becomes intermittent or insufficient.
• Battery warning lamp illumination or flickering lights.
• Cracked, brittle or melted wire insulation.
• Corrosion at terminals or connectors.
• Electrical behaviour that changes when the wiring moves.
  
  

Why Replacement Matters

Renewal may be appropriate when conductors are damaged, insulation has deteriorated, connections have corroded or earlier repairs have left unreliable joins. Confirm the source of the fault first: battery condition, earth connections, alternator and regulator faults can produce similar symptoms. Replacing the loom will not correct a defective charging unit.

FAQs

• Is this the alternator itself?
  No. The product is the wiring loom for a Bosch alternator application.
• What should be checked before replacement?
  Inspect the existing harness, terminals, battery connections and earth straps. Electrical testing should establish whether the wiring is responsible for the charging fault.
• Does the model year alone confirm compatibility?
  No. Compare the installed alternator, regulator connections and existing loom with the required application, particularly if the charging system has previously been changed.
• Can the original wiring be repaired instead?
  A localised defect may be repairable, while widespread insulation damage or corrosion can justify replacing the harness.

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90161203720

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12 Volt 90 Amp Alternator 

The Porsche Alternator is a high-quality 12 Volt 90 Amp charging system component designed for Porsche 911 and Porsche 911 turbo models. As one of the most important electrical components on the vehicle, the alternator generates electrical power while the engine is running and continuously recharges the battery to maintain reliable operation of the vehicle's electrical systems.

Fits:

• Porsche 911 1984-1986 3.2L
• Porsche 911 1987-1989 3.2L G50
• Porsche 911 1978-1989 3.3L Turbo (930)

From powering the ignition system and fuel delivery components to supporting lighting, instrumentation, heating and other electrical accessories, the alternator plays a crucial role in the day-to-day reliability and performance of your Porsche. Without a properly functioning alternator, the battery will gradually discharge, leading to starting difficulties, electrical faults and eventually complete vehicle shutdown.
Overall length: 173mm
Voltage: 12V
Power: 90Amp
Direction of rotation: clockwise (CW)
Fixing: 6 studs
Controller: internal
Pulley: not supplied

Whether you're maintaining an air-cooled Porsche 911, servicing a Porsche 911 turbo or carrying out a restoration project, replacing a worn alternator helps ensure dependable performance and protects the vehicle's electrical system.

What Does an Alternator Do?

The alternator converts mechanical energy generated by the engine into electrical energy. Driven by the engine belt system, it supplies power to the vehicle while simultaneously charging the battery.

The alternator is responsible for:

Recharging the battery while driving Powering electrical systems and accessories Maintaining stable system voltage Supporting ignition and fuel system operation Ensuring reliable starting performance

A healthy alternator is essential for keeping every electrical system operating correctly.

Symptoms of Alternator Wear or Failure

Alternators operate continuously whenever the engine is running and are subjected to heat, vibration and electrical load. Over time, internal components such as bearings, brushes, voltage regulators and diodes can wear or fail.

Common symptoms of alternator failure include:

Battery warning light illuminated Repeated flat batteries Slow or difficult engine starting Flickering headlights Dimming dashboard lights Electrical accessories operating intermittently Low charging voltage Unusual whining or grinding noises Burning electrical smell Vehicle stalling due to insufficient voltage

In many cases, alternator failure develops gradually before progressing to complete charging system failure.

Why Alternator Replacement Matters

A faulty alternator can leave the battery unable to recharge properly, eventually causing loss of electrical power and unexpected breakdowns.

Replacing a worn alternator helps:

Restore correct battery charging Improve electrical system reliability Prevent roadside breakdowns Maintain stable voltage output Extend battery life Protect sensitive electrical components Eliminate charging system warning lights Improve overall vehicle dependability

For classic and performance Porsche models, maintaining a healthy charging system is essential for reliable operation and long-term ownership enjoyment.

Features & Benefits

• 12 Volt, 90 Amp output
• Provides reliable battery charging
• Maintains stable electrical system voltage
• Supports ignition and fuel system operation
• Durable construction for long service life
• Ideal for maintenance, repairs and restoration projects       

Related reference numbers
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91160312005

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Alternator.
Keep your Porsche's charging system operating reliably with this OE Match Alternator, manufactured as a direct replacement. Produced to OE-style specifications, this alternator is designed to generate electrical power while the engine is running, supplying electricity to the vehicle's electrical systems and maintaining the battery at the correct state of charge.

Fits:

• Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
• Porsche 911 1978-1983 3.0L / SC  

The alternator is a vital component that powers everything from the ignition and lighting system to fuel delivery, instrumentation, and charging functions. Over time, internal bearings, brushes, voltage regulation components, or windings can wear through continuous operation, heat, and age, leading to reduced charging performance or complete failure. Replacing a worn alternator restores dependable electrical output and helps ensure reliable starting and operation. This OE Match component is ideal for routine maintenance, electrical system repairs, and Porsche restoration projects.  

What This Product Does:

• Generates electrical power while the engine is running.
• Charges the vehicle's battery during operation.
• Supplies power to the ignition and electrical systems.
• Maintains consistent charging voltage.
• Supports reliable engine starting and vehicle operation.
• Replaces worn or failing original alternators.
• Provides an OE-style fit and dependable quality.

Symptoms Of Wear Or Failure:

• Battery warning light illuminated.
• Battery repeatedly losing charge.
• Dim or flickering headlights.
• Electrical accessories operating intermittently.
• Whining, grinding, or bearing noise from the alternator.
• Difficulty starting due to low battery charge.
• Low or inconsistent charging voltage.
• Visible damage or excessive wear to the alternator.

Why Replacement Matters:

• The alternator is responsible for supplying electrical power to the vehicle while simultaneously recharging the battery. A failing alternator can lead to poor charging performance, battery drain, unreliable starting, and the eventual loss of essential electrical systems, potentially leaving the vehicle unable to operate.
• Replacing the alternator restores the correct charging capacity, ensuring dependable electrical performance and protecting the battery from unnecessary strain. Manufactured as a direct replacement and produced to OE-style specifications, this OE Match alternator provides the correct fit, dependable quality, and long-lasting durability, making it an excellent choice for Porsche maintenance, electrical system repairs, and restoration projects.

Related reference numbers
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91160312002

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Engine harness for Bosch alternator (2 Pole connector).
All new connectors, housings, connector boots, and engine tin square grommet. Manufactured to original specs.

Fits:
Porsche 911 1970-71

Made in Canada

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91161201600

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Engine harness for Motorola alternator.

Fits:
Porsche 911 1970-71

Made in Canada

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91161201700

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OE Match engine wiring loom for Porsche 911 K-jet applications from 1974–75. Manufactured in Canada for replacement or restoration work involving the engine wiring.

Fits

• Porsche 911 1974-75
  
  

Check fitment for your specific vehicle (model, year, engine) before ordering.

What This Product Does

The loom groups the engine's electrical connections into an organised assembly. It carries electrical supplies and signals between connected components, providing the wiring paths needed for their operation. This is a wiring harness, not an alternator or generator.

Functions

• Connects engine electrical components through a grouped wiring assembly.
• Carries power and electrical signals through the connected circuits.
• Replaces an existing engine loom affected by deterioration or unsuitable previous repairs.
  
  

Technical Details

• Brand: OE Match.
• Part reference: 91161201731.
• Application type: K-jet engine wiring.
• Country of manufacture: Canada.
  
  

Symptoms of Fault

• Starting or running faults that occur intermittently.
• Electrical operation changing when wiring is moved.
• Cracked, hardened or melted insulation around the engine.
• Corroded terminals or damaged connector housings.
• Voltage loss across a damaged wire or connection.
• Repeated fuse failures requiring investigation.
  
  

These observations can also have other causes. Inspect the wiring and test the affected circuit before deciding that the harness needs replacement.

Why Replacement Matters

Ageing insulation, fractured conductors and corroded connections can interrupt electrical circuits. Replacing a deteriorated loom addresses damaged wiring as an assembly rather than adding further joins to extensively repaired sections. Check battery connections, earth straps and adjoining connectors as part of the same diagnosis.

FAQs

• What should I check before choosing this harness?
  Confirm the vehicle year, K-jet application, existing wiring arrangement and part reference. Compare the connectors with those on the original loom.
• Does an intermittent fault prove the loom is defective?
  No. Test circuit continuity, supplies and earth connections, and inspect terminals before replacing parts.
• Can an existing loom be repaired instead?
  A localised defect may be repairable. Widespread insulation damage, corrosion or numerous unreliable joins can make replacement more appropriate.

Related reference numbers
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91161201731

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OE Match engine wiring harness for the Porsche 911 SC 3.0L, covering the 1982–83 application. 

Fits

Porsche 911 1982-83

Check fitment for your specific vehicle (model, year, engine) before ordering.

What This Product Does

The loom groups the engine's electrical wiring, providing connections through which the associated components receive power or transmit signals. It is a wiring assembly, not an alternator, voltage regulator or ignition unit.

Functions

• Connects the engine's electrical circuits.
• Carries electrical supplies and signals between connected components.
• Keeps related wiring together within an engine harness assembly.
  
  

Technical Details

• Brand: OE Match.
• Part reference: 91161201604.
• Application: Porsche 911 SC 3.0L, 1982–83.
• Internal diagram description: engine wiring harness; SC application, with an 82-onwards note.
  
  

Symptoms of Fault

• Electrical operation that changes when the wiring moves.
• Cracked, hardened or melted insulation around the engine.
• Corroded terminals or damaged connector housings.
• Starting or charging problems associated with excessive circuit resistance.
• Repeated fuse failures or intermittent engine electrical faults.
  
  

These symptoms can have several causes. Inspect the battery connections, earth straps and individual circuits before attributing a fault to the harness.

Why Replacement Matters

Renewal may be appropriate where insulation has deteriorated extensively, conductors have fractured or earlier repairs have left unreliable connections. Replacing a confirmed faulty loom addresses the wiring itself rather than repeatedly changing connected components. OE Match focuses on Porsche replacement applications; matching the original reference and vehicle specification remains essential.

FAQs

Can a damaged connection resemble a component failure?
Yes. Poor terminal contact can interrupt an electrical supply or alter a signal, so the connected component may not be responsible.

Should a small damaged section be repaired instead?
A localised fault may be repairable, while extensive deterioration can make harness replacement more appropriate. Have the condition assessed before deciding.

What should be checked before installation?
Compare the original reference, model year, engine specification, connector arrangement and wiring route with the existing loom.

Related reference numbers
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91161201604

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Fits:
Porsche 912 1965-69

Diagram ref no 1

PLEASE NOTE:

• The surcharge for this reconditioned part will be refunded when the exchange unit is received and approved by us and the relevant manufacturer.
• Please note, surcharge refunds often take an average of 6 to 8 weeks to be approved by the manufacturer.
• Acceptance of the exchange part is at the manufacturer's discretion, based on the part being fit for reconditioning.
• All surcharges and exchanges are subject to our terms and conditions.

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61660311200

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PLEASE NOTE:

• The surcharge for this reconditioned part will be refunded when the exchange unit is received and approved by us and the relevant manufacturer.
• Please note, surcharge refunds often take an average of 6 to 8 weeks to be approved by the manufacturer.
• Acceptance of the exchange part is at the manufacturer's discretion, based on the part being fit for reconditioning.
• All surcharges and exchanges are subject to our terms and conditions.  

Generator harness 420W.

Fits:
Porsche 912 (1965-68)

Made in Canada.

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90261203700

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Generator rebuild kit 12V 30A 105 mm.

Fits:
Porsche 356
Porsche 912

Fits for Bosch generator number 0101 206 116 or 0101 206 117 or Porsche number 616 603 102 01 or all 356 6V generator. This rebuild kit is usable with 0190 350 068 Bosch voltage regulator. 

Generator rebuilt kit 12V 30A 90 mm 356/912. With this kit you can rebuild your 912 generator. This is for the 90 mm generator. This kit can also be used to transfer your 6V 356 generator in to 12V. Set includes 2 bearings, 1 set brushes, 2 field coils and 1 armature. There Are 2 types of Bosch 90 mm generator. The difference is in the field coil holder. These field coils are for the short field coil holder. You can easy shorten the field coil holder with a few millimeters to fit these short field coils. Parts are also separate available.

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0101206116RK

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Generator rebuild kit 12V 30A 90 mm.

Fits:
Porsche 356
Porsche 912

Fits for Bosch Generator number 0101 206 116 or 0101 206 117 or Porsche number 616 603 102 01 or all 356 6V generator. This rebuild kit is usable with 0190 350 068 Bosch voltage regulator. 

Generator rebuilt kit 12V 30A 90 mm 356/912. With this kit you can rebuild your 912 generator. This is for the 90 mm generator. This kit can also be used to transfer your 6V 356 generator in to 12V. Set includes 2 bearings, 1 set brushes, 2 field coils and 1 armature. There Are 2 types of Bosch 90 mm generator. The difference is in the field coil holder. These field coils are for the short field coil holder. You can easy shorten the field coil holder with a few millimeters to fit these short field coils. Parts are also separate available.

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0101206116RK

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Generator Wire Lead Rubber Boot.

The OE MATCH Generator Wire Lead Rubber Boot is a replacement protective cover designed for the generator electrical connections on classic Porsche 356 and 912 models. This rubber boot helps insulate and protect the generator wire terminals from moisture, dirt, oil contamination and accidental electrical contact.
Sold Each.
x Required Per Car.

Fits:

• Porsche 356 1950-65
• Porsche 912 1965-69

Diagram Ref No 4

Designed to provide an OE-style fit and appearance, it is ideal for routine maintenance, electrical system repairs and classic Porsche restoration projects.

What This Product Does:

• The generator wire lead rubber boot covers the electrical terminal connections on the generator, helping protect them from environmental exposure and reducing the risk of accidental short circuits.
• It also helps maintain the original appearance of the engine bay while providing an additional layer of protection against dirt, moisture and everyday engine vibration.

Symptoms Of Wear Or Failure:
Over time, exposure to engine heat, oil and age can cause the original rubber boots to deteriorate. Common signs include:

• Cracked or split rubber: Age-related deterioration leaves electrical terminals exposed.
• Hard or brittle material: Loss of flexibility prevents the boot from fitting securely.
• Loose or missing boots: Electrical connections become vulnerable to contamination and accidental contact.
• Oil and dirt contamination: Damaged protective boots allow contaminants to accumulate around the generator terminals.
• Visible electrical corrosion: Moisture exposure may contribute to corrosion around terminal connections.

Why Replacement Matters:

• Replacing worn or damaged generator wire lead rubber boots is a simple but important step in maintaining the reliability and safety of your classic Porsche's electrical system.
• A correctly fitted replacement boot helps protect exposed generator terminals, reduces the risk of accidental short circuits and limits contamination that could contribute to poor electrical connections.
• Replacement also helps preserve the original engine bay appearance, making it particularly beneficial during restoration and preventative maintenance.

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61610938100

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Ground Strap Alternator and Intercooler.

Fits:
Porsche 911 - 1965 to 1973 - (alternator)

Porsche 911 turbo - 1987 to 1989  (intercooler)
Porsche 914 - 1970 to 1976

Click 'Zoom in' for large parts diagram.
Diagram ref no 18 or 17

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90161211000

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Holder bracket alternator. 
Sold each

Fits:
Porsche 911 - 1965 to 1977

Fitted to 770W, three-phase alternators of the 911 models from 1969 to 1977

Diagram ref no 3 and 4

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90160391000

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Resistor For Alternator.

Fits:
Porsche 911 1982>>1983

Diagram Ref No 2A

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91164198100

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