Distributors

OE Match Bosch-style 12-plug distributor, featuring clockwise rotation. Bluetooth app control allows ignition-map programming, with styling based on the Bosch 3.0 RSR distributor.

Fits

• Porsche 911 - 1972 to 1989
• Excluding 911 SC 3.0ltr
  
  

Confirm the engine specification and ignition arrangement rather than relying on the model-family dates alone.

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

What This Product Does

This distributor routes ignition pulses to the spark plugs in the required firing sequence. It combines a period-inspired housing design with programmable ignition control, allowing the ignition map to be configured through a Bluetooth-connected smartphone app.

Functions

• Distributes ignition output across a 12-plug installation.
• Allows app-based adjustment of the ignition map.
• Provides smartphone control of the rev-limit setting.
• Offers PIN-controlled immobiliser locking and unlocking.
  
  

Technical Details

• Brand: OE Match; Bosch-style design, not identified as Bosch manufacture.
• 12-plug configuration with clockwise rotation.
• Appearance draws on the historic Bosch 3.0 RSR unit.
• Requires a pair of three-pin HKZ ignition units.
• Bluetooth connection supports smartphone app programming.
• Programmable rev limiter and PIN-operated immobiliser.
  
  

Symptoms of Fault

Distributor-related faults can present as difficult starting, uneven idling, intermittent misfiring, hesitation or stalling. Unsteady timing readings, excessive shaft movement, internal moisture or damaged cap contacts warrant inspection. These signs do not establish that the complete distributor needs replacement.

Why Replacement Matters

Mechanical wear or electrical deterioration can disrupt spark distribution and timing consistency. Inspect the cap, rotor, leads, plugs, wiring and associated ignition equipment before deciding which components need renewal. For a rebuild or ignition conversion, verify the clockwise drive requirement, HKZ arrangement and intended ignition settings before installation.

FAQs

Is this suitable for the 911 SC 3.0?
No. The supplied application specifically excludes that engine.

What ignition equipment does it require?
This version needs two three-pin HKZ units; check the existing installation before selecting it.

Can the ignition settings be changed by smartphone?
Yes. Bluetooth app access provides ignition-map programming, rev-limit adjustment and PIN-based immobiliser control.

OE Match offers this clockwise-rotating, Magneti Marelli-style 12-plug distributor. Bluetooth connectivity allows ignition-map programming through a smartphone app.

Fits

• Porsche 911 - 1972 to 1989
• Excluding 911 SC 3.0ltr

The model groups above must be read alongside the specific 1972–1989 application and SC exclusion. Check fitment for your specific vehicle (model, year, engine) before ordering.

What This Product Does

The distributor routes ignition pulses to the spark plugs in the required firing sequence. This 12-plug version combines electronically programmable ignition control with styling based on the period Magneti Marelli distributor, rather than relying solely on a fixed ignition calibration.

Its app provides access to ignition-map settings through Bluetooth. Smartphone controls also allow a speed limit to be configured and the immobiliser to be secured or released using a PIN.

Functions

• Distributes ignition pulses across a 12-plug arrangement.
• Allows ignition-map adjustment through the connected app.
• Provides a smartphone-configurable speed limiter.
• Supports PIN-controlled immobiliser operation.
  
  

Technical Details

• Rotation direction: clockwise.
• Requires two 3-pin HKZ ignition units.
• Specified engine coverage extends from 2.4ltr to 3.2 Carrera, subject to the stated exclusion.
• Appearance follows the Magneti Marelli 2.8/3.0 RSR distributor design.
• Historical context: the original distributor design was factory-fitted to the 911 ST 2.5ltr and 2.8ltr 911 RSR.
• Ignition-map programming uses an app and Bluetooth connection.
  
  

Symptoms of Fault

• Misfiring during acceleration or under load.
• Uneven idling, difficult starting or unexpected stalling.
• Hesitation or backfiring.
• Unstable timing readings during inspection.
• Noticeable play at the distributor shaft or rotor.
• Moisture, oil contamination or electrical tracking inside the cap.
  
  

Why Replacement Matters

Wear within a distributor can disturb ignition timing or interrupt spark distribution. A replacement may be appropriate when inspection confirms shaft wear, housing damage or an internal fault that cannot be resolved through service components. Check the leads, plugs, ignition units and electrical connections first, as faults elsewhere can produce similar running problems.

FAQs

Will a cap and rotor repair every distributor fault?
No. These components cannot correct wear in the shaft, bushes or housing; inspect the complete assembly before deciding what to replace.

What should be checked before installation?
Confirm the engine application, clockwise drive requirement and compatibility with two 3-pin HKZ units. The 911 SC 3.0ltr is excluded.

How are the electronic settings adjusted?
A smartphone app communicates over Bluetooth for ignition-map programming, speed-limiter adjustment and PIN-based immobiliser control.

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

The product you are viewing cross references to these numbers