Distributors

12 plug distributor, Bosch style. Porsche 911 1972 to 1989

Rotates clockwise

Fits:
Porsche 911 - 1972 to 1989
Excluding 911 SC 3.0ltr

This distributor is made in the historical design of the original Bosch 3.0 RSR ignition distributor and combines the latest technology with an authentic look. 

The ignition map is easily and freely programmable via an app and Bluetooth. 

In addition, an immobilizer can be locked/unlocked with a PIN and a speed limiter can also be set easily via a smartphone. 

This version requires two 3-pin HKZ devices but it fits all engines from 1972 to 1989, so from the 2.4ltr to the 3.2 Carrera 

This ignition distributor rotates clockwise, so for all engines except 911 SC 3.0ltr

12 plug distributor, Bosch style. 

Anticlockwise rotation



Fits:
Porsche 911 SC - 1978 to 1983

This distributor is made in the historical design of the original Bosch 3.0 RSR ignition distributor and combines the latest technology with an authentic look. 

The ignition map is easily and freely programmable via an app and Bluetooth. 

In addition, an immobilizer can be locked/unlocked with a PIN and a speed limiter can also be set easily via a smartphone. 

This version requires two 3-pin HKZ devices and fits the 911 SC 3.0ltr

This ignition distributor rotates anti-clockwise.

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Related, superseded, cross reference or alternative numbers for comparison.

90160202510

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12 plug distributor, Magneti Marelli style. Porsche 911 1965 to 1971

Fits:
Porsche 911 2.0ltr - 1965 to 1969 
Porsche 911 2.2ltr - 1970 to 1971

This distributor is made in the historical design of the original Magneti Marelli ignition distributor and combines the latest technology with an authentic look. 

It was installed at the factory on the 906, 911R, 914/6 GT and 911 ST and the ignition map is easily and freely programmable via an app and Bluetooth. 

In addition, an immobilizer can be locked/unlocked with a PIN and a speed limiter can also be set easily via a smartphone. 

This version requires two 3-pin HKZ devices but it fits all engines from 1965 to 1971, so from the 2.0ltr to the 2.2ltr 

12 plug distributor, Magneti Marelli style. 

Clockwise rotation



Fits:
Porsche 911 - 1972 to 1989
Excluding 911 SC 3.0ltr

This distributor is made in the historical design of the original Magneti Marelli 2.8/3.0 RSR ignition distributor and combines the latest technology with an authentic look. 

It was installed at the factory on the 911 ST 2.5ltr and on the 2.8ltr 911 RSR and the ignition map is easily and freely programmable via an app and Bluetooth. 

In addition, an immobilizer can be locked/unlocked with a PIN and a speed limiter can also be set easily via a smartphone. 

This version requires two 3-pin HKZ devices but it fits all engines from 1972 to 1989, so from the 2.4ltr to the 3.2 Carrera 

This ignition distributor rotates clockwise, so for all engines except 911 SC 3.0ltr

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

90160202500

The product you are viewing cross references to these numbers

Distributor cap 12 plug Bosch style. 

Fits:
Porsche 911 RS / RSR / ST / 934

Produced in the original manufacturing process using the original Bakelite material. This material was specially developed in co-operation with the OEM manufacturers for the HKZ ignition system and offers the best insulation values and extreme temperature resistance.
The caps are elaborately produced in accordance with the manufacturer's specifications

Reference number:
Bosch ZV/8 970
Bosch D 237 012 178

Porsche 911, 911 RS, 911 RSR, 911 ST, 917, 935
Material - Bakelite

• New production in true to original design
• Based on NOS (New Old Stock) components and own construction drawings

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

90160202520

The product you are viewing cross references to these numbers

Distributor Block-Off & Conversion Kits for Classic Porsche 911
The Distributor Plug Kit for classic Porsche 911 covers the precise scenario where the engine’s original distributor hole is no longer used—often when converting to coil-on-plug ignition or eliminating the mechanical distributor altogether.

Fits:

• Porsche 911 1965-1968 2.0L / 912 SWB (F)
• Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
• Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
• Porsche 911 1978-1983 3.0L / SC
• Porsche 911 1984-1986 3.2L
• Porsche 911 1987-1989 3.2L G50
• Porsche 911 1975-1977 3.0L Turbo (930)
• Porsche 911 1978-1989 3.3L Turbo (930)

Blanks off distributor hole in crankcase, highlighted in green

This high-quality kit is CNC-machined from aluminium, anodised silver, and features dual O-ring seals to ensure a secure, leak-free block-off of the distributor housing. It also incorporates a threaded pulling hole so the plug can be removed easily if future service is required. The result: a clean, visually refined engine bay appearance and a reliable closure of the distributor port, preserving oil-tight integrity and engine performance.

What the product is:
A plug kit designed specifically for the distributor bore in classic Porsche 911 engines. CNC-machined aluminium block-off plug, enhanced sealing (double O-rings), and serviceable pull-thread.

What it does:

• Seals the distributor aperture when the mechanical distributor has been removed or bypassed.
• Maintains crankcase oil integrity, prevents leaks and contamination ingress.
• Enhances engine bay aesthetics by replacing the open distributor hole with a tailored, polished plug.

Why the original part or configuration fails / needs attention:
When a distributor is removed (for example during coil-on-plug conversion), the hole becomes an unsealed opening—risking oil leakage, contamination ingress (dirt, moisture), crankcase pressure loss, or aesthetic degradation. Older distributor seals and housings may become warped, cracked or worn with age, causing leaks or reduced reliability.

Why this plug kit should be installed / replaced:

• Prevents oil leaks and contamination by securely sealing the engine block in the absence of a distributor.
• Improves engine bay appearance and presents a quality finish.
• Provides a service-friendly solution (threaded pull hole) versus a crude blanking plate or crude cap.
• If you’re converting away from a distributor or refurbishing the engine, installing this kit is a simple, low-cost upgrade to protect longevity and maintain engine integrity.
  

For enthusiasts of the classic Porsche 911 who are performing engine conversions, refurbishments, or upgrades, the Distributor Plug & Block-Off Kit category is essential. These kits are designed for scenarios where the factory mechanical distributor is removed—commonly in coil-on-plug conversions, performance builds, or restoration projects.

What these components do:

• Securely blank off the distributor aperture to maintain crankcase integrity.
• Prevent oil and vacuum/pressure leakage from the engine block.
• Ensure that modifications (such as eliminating the distributor) do not compromise engine performance or reliability.
• Provide a finished, professional engine bay look—no open holes, no unsealed ports, and no risk of contamination.

Why you should replace or install proper kits now:

• Restores or maintains crankcase seal integrity, protecting engine internals from oil and debris.
• Helps maintain correct engine pressure and lubrication environment for optimal performance.
• Minimises risk of leaks, contamination, and subsequent engine damage—especially critical on high-value classic Porsche engines.
• Enhances presentation and value of the engine bay for restoration, show or performance builds.
• Using a quality kit from Design911 ensures you’re installing parts that meet or exceed the factory fit and finish—and are tailored for your classic Porsche 911.

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

AMS9050165

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