Standard Alternator / Genarator

Alternator 12v 55A (Internal Regulator)

Note** This has an internal regulator the external regulator should be removed from the car when fitting

Fits:
Porsche 911 1965-74

Alternator 12V-55A.
Replace: 91160310600, 90160311400, 90160311300.

This is a NEW part not an exchange part, so no old part is required. This alternator is usable for all old "small" type alternator stand.

Fits
Porsche 911 65-77 with internal regulator.

For Installation Instructions please CLICK HERE

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

901603106DX

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Alternator 14V 60A.

Fits:
Porsche 911 1965-74

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

91160312000

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Standard output, 200 Series, 94 amp alternator. Porsche 911 (with early, thick fan housing)

Fits:

Porsche 911 1965-1968 2.0L / 912 SWB (F)
Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)  
Porsche 914-6 1970-1976

 WOSP 200 Series 70 amp Alternator

The WOSP 200 Series Alternators are designed as direct replacements for OEM alternators, making them ideal for classic Porsche restorations, standard road use, or motorsport applications where a smaller, lower-output alternator is preferred.

Unlike the modern 300 Series units, the 200 Series uses traditional round-wire stator technology. This makes them faithful to original designs while still benefitting from WOSP’s reputation for high-quality engineering and reliability.

Key Features of the 200 Series 

• Round-Wire Stator Design – based on traditional alternator construction, offering reliable charging performance.
  
• Direct OEM Replacement – plug-and-play compatibility with factory alternators.
  
• Lower Output Race Alternators – compact, lightweight designs available for motorsport or specialist builds.
  
• Durable Construction – built to WOSP’s exacting standards to withstand heat, vibration, and long-term use.
• Easy Fitment – engineered for straightforward installation without modification.

Why Choose a 200 Series Alternator?

• OEM Accuracy – ideal for those seeking authenticity in restorations.
  
• Cost-Effective Reliability – a direct replacement for worn or failing factory units.
  
• Motorsport Ready – smaller/lower output versions reduce parasitic loss, improving efficiency in lightweight race applications.
  
• Proven Technology – traditional design trusted for decades, refined by WOSP for modern standards.

Common Signs Your Alternator Needs Replacing

• Battery Warning Light on dashboard
  
• Dim or Flickering Lights at idle or under load
  
• Flat Battery or difficulty starting
  
• Electrical Failures when multiple systems are in use
  

Unusual Noises from the alternator bearings

If you experience these symptoms, replacing your alternator with a WOSP 200 Series LMA036 ensures dependable charging and reliable performance.

 Why Buy from Design911?

• Authorised WOSP Supplier – genuine alternators, guaranteed fitment
  
• OEM & Motorsport Options – covering both factory replacements and race-spec alternators
  
• Expert Support – guidance on choosing the right output for your Porsche
  
• Worldwide Shipping – secure, fast delivery from our Essex-based warehouse

Upgrade or restore your Porsche with the WOSP 200 Series LMA036 Alternator – the perfect balance of OEM accuracy, proven reliability, and WOSP engineering excellence.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

91160312000

The product you are viewing cross references to these numbers

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.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

90161203720

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The OE Match engine harness for Bosch alternator replaces the engine wiring on Porsche 911 1970–71 models with the 2 Pole connector arrangement. It is supplied with new connectors, housings, connector boots and an engine tin square grommet for engine wiring repairs and restoration. Manufactured to original specs.

Fits

• Porsche 911 1970–71 — for Bosch alternator with 2 Pole connector.
  
  Check fitment for your specific vehicle (model, year, engine) before ordering. Confirm the alternator type and connector arrangement, particularly if the charging system has been changed previously.
  
  What Is This Part?

This is the engine wiring harness for the Bosch alternator installation, grouping the relevant electrical wiring into an organised loom. Its connectors and housings provide the connection points, while the boots cover the terminal areas and the square grommet protects the wiring where it passes through the engine tin. The harness is manufactured to original specifications and made in Canada. It provides a replacement option when the existing loom has deteriorated or accumulated repairs that make further local repairs impractical.

What Does This Part Do?

• Connects the engine wiring: Provides the wiring arrangement for the specified Bosch alternator application.
• Groups the circuits: Keeps the engine wiring together as a loom rather than separate, unsupported wires.
• Provides connection points: New connectors and housings replace the corresponding ageing connection components.
• Covers terminal areas: Connector boots provide covering around the electrical connections.
• Protects the engine tin passage: The square grommet separates the wiring from the edge of its opening.
  
  Why Replace This Part?

Engine wiring can deteriorate through age, heat, vibration and abrasion. Cracked insulation, fractured wires or corroded connections can interrupt a circuit or introduce resistance, potentially contributing to intermittent electrical faults or poor charging. Replacement is appropriate when inspection and testing identify damage within the harness, rather than simply because a charging fault is present.

A replacement loom may also be useful during restoration when the original wiring has widespread deterioration, unsuitable joins or damaged connector housings. Check the battery, earth connections, alternator and regulator as part of diagnosis so that a fault elsewhere is not mistaken for harness failure.

When to Replace This Part?

• Damaged insulation: Cracking, brittleness, chafing or exposed conductors are visible.
• Heat damage: Wiring, boots or connector housings show melting or scorching; investigate the cause before fitting a replacement.
• Deteriorated connections: Terminals are corroded, loose or no longer retained properly in their housings.
• Confirmed circuit faults: Electrical testing identifies a broken conductor or excessive resistance in the loom.
• Unsuitable previous repairs: Multiple damaged or poorly secured joins make dependable local repair impractical.
• Removal reveals damage: Engine or alternator work exposes worn wiring or a damaged engine tin grommet.
  
  Where Is This Part Fitted?

Location: In the rear engine compartment, forming part of the engine wiring arrangement for the Bosch alternator installation. The supplied square grommet fits at the wiring passage through the engine tin.

Technical Details

• Alternator application: Bosch.
• Connector arrangement: 2 Pole connector.
• Included connection components: New connectors, housings and connector boots.
• Included grommet: Engine tin square grommet.
• Specification: Manufactured to original specifications.
• Country of manufacture: Canada.
  
  FAQs

• Does poor charging prove that the harness needs replacing? No. Check the battery, alternator, regulator, earth connections and wiring, then replace the component shown to be faulty.
• Should I repair the existing loom or replace it? An isolated fault may be repairable. Widespread insulation damage, corroded connections or numerous unsuitable joins can justify replacing the harness.
  
  Product Summary

• Product: Engine harness for Bosch alternator.
• Brand: OE Match.
• Application: Porsche 911 1970–71 with 2 Pole connector.
• Purpose: Replacement of deteriorated or damaged engine wiring.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

91161201600

The product you are viewing cross references to these numbers

This OE Match engine harness for Motorola alternator applications connects the engine electrical circuits on Porsche 911 models from 1970–71. It provides a replacement wiring assembly when the existing loom has deteriorated or suffered damage.

Fits

• Porsche 911 1970–71 — with Motorola alternator.
  
  These broader model classifications do not extend this harness's application beyond Porsche 911 1970–71 with a Motorola alternator. Confirm the alternator currently fitted, particularly if the charging system has previously been changed.
  
  Check fitment for your specific vehicle (model, year, engine) before ordering.
  
  Diagram ref no 20
  
  What Is This Part?

This is the engine wiring loom specified for the Motorola alternator installation. The harness forms the electrical connection between the engine and the engine-compartment fuse-panel wiring, grouping individual circuits into a routed assembly. Its conductors and connections carry electricity between the connected components and the vehicle wiring. During restoration or engine work, its condition should be assessed alongside the terminals, earth connections and surrounding wiring.

What Does This Part Do?

• Connects engine wiring: Links the engine electrical circuits to the engine-compartment wiring connection.
• Serves the Motorola installation: Provides the engine harness application specified for this alternator arrangement.
• Groups individual circuits: Keeps the engine wiring together as a loom for routing and connection.
• Replaces deteriorated wiring: Allows a damaged engine harness to be renewed as an assembly rather than retaining multiple unreliable repairs.
  
  Why Replace This Part?

Engine-bay heat, vibration and age can leave insulation brittle, damage conductors or loosen connections. Corroded or poorly secured terminals can introduce electrical resistance, causing voltage loss and intermittent charging faults. Replacement may be appropriate where inspection confirms widespread deterioration, damaged connections or previous repairs that cannot be put right satisfactorily.

A charging warning or flat battery does not establish that the harness is faulty. Check battery condition, earth straps, alternator connections and charging-system operation before deciding which component needs replacing. A sound harness does not need automatic replacement whenever the alternator is removed.

When to Replace This Part?

• Cracked insulation: Brittle, split or missing covering exposes the conductors.
• Heat damage: Melted insulation, discolouration or burnt connections require investigation.
• Damaged wiring: Chafed, cut or fractured conductors are found during inspection.
• Corroded terminals: Connections are damaged or no longer make secure electrical contact.
• Confirmed electrical loss: Continuity or voltage-drop testing identifies a fault within the harness.
• Unsatisfactory previous repairs: Multiple damaged joins or altered connections make reliable repair impractical.
  
  Where Is This Part Fitted?

Location: In the rear engine compartment, running between the engine electrical connections and the engine-compartment fuse-panel harness. During fitting, check routing and supports so the loom is not stretched, trapped or left rubbing against adjacent parts. Disconnect the battery before disturbing alternator electrical connections.

Technical Details

• Country of manufacture: Canada.
• Electrical application: Engine harness for Motorola alternator installation.
  
  FAQs

• Should I replace the harness for a charging fault alone? No. Inspect the wiring and connections, then test the charging system to establish the cause.
• Can an individual damaged wire be repaired? A localised defect may be repairable using suitable automotive wiring methods. Widespread insulation damage or corrosion may justify harness replacement.
  
  Product Summary

• Product: Engine harness for Motorola alternator.
• Brand: OE Match.
• Purpose: Connects engine electrical circuits to the engine-compartment wiring.
• Manufacture: Made in Canada.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

91161201700

The product you are viewing cross references to these numbers

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

Related reference numbers
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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

Related reference numbers
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90160391000

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