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Kits
Fits:
Porsche 928 S2 - 1984 to 1986
Kit contains
2 x Distributor cap
2 x Rotor arm
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94460225100KIT1
The product you are viewing cross references to these numbers
- Porsche 928S2 4.7L 1984-86
Fits:
Porsche 928S 09/1982 - 07/1983
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
92860290200
The product you are viewing cross references to these numbers
- Porsche 928S 4.7L 1981-83
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12 Month Warranty
Worldwide Delivery
High-quality Bosch distributor cap for the Porsche 928S 4.7L, designed as a direct replacement for Porsche OE reference 92860290200. The Bosch 0290004502 distributor cap is an essential component of the Porsche 928S ignition system, distributing the high-voltage current generated by the ignition coil to each spark plug in the correct firing sequence.
Fits:
Porsche 928S 09/1982 - 07/1983
* Engine codes: M28.11 M28.12
Always confirm the Porsche OE reference and existing ignition system before ordering, particularly on vehicles where the distributor may have been replaced during previous repairs.
A distributor cap operates continuously under high electrical voltage, engine-bay heat and vibration. As the internal contacts wear or become contaminated, ignition performance can deteriorate, potentially causing difficult starting, misfires, rough running or reduced engine performance.
Replacing a worn distributor cap with the correct Bosch component helps restore reliable spark distribution and maintain smooth operation of the 4.7-litre V8 engine.
Key Features
- Premium distributor cap manufactured by Bosch
- Bosch part number 0290004502
- Cross-reference for Porsche OE 92860290200
- Designed for Porsche 928S 4.7L applications
- Suitable for M28.11 and M28.12 engines
- Direct replacement for the original distributor cap
- Designed for accurate high-voltage distribution
- Helps maintain consistent ignition performance
- Correct fit for the original Bosch distributor system
- Ideal for routine ignition servicing or restoration work
- Sold individually
What Does the Distributor Cap Do?
- Reliable starting
- Stable idle
- Consistent spark delivery
- Smooth acceleration
- Correct combustion
- Reliable high-RPM operation.
- Difficult starting
- Engine misfires
- Rough or uneven idle
- Hesitation during acceleration
- Reduced engine performance
- Intermittent ignition faults
- Visible corrosion on the internal contacts
- Carbon tracking inside the cap
- Cracks in the cap housing
- Excessive wear or burning of the terminals
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
92860290200
The product you are viewing cross references to these numbers
- Porsche 928S 4.7L 1981-83
Shop Securely
12 Month Warranty
Worldwide Delivery
OE Match distributor cap for the supplied 928S application. It connects the distributor rotor with the ignition leads as part of the spark distribution system.
Fits
- Porsche 928 (1978-1995)=>928S 4.7L 1981-83
Check fitment for your specific vehicle (model, year, engine) before ordering.
What This Product Does
Working alongside the rotor, the cap routes high-voltage electricity towards the appropriate spark plug lead. Its insulating housing separates the electrical paths and covers the internal contacts. Damage to the housing or deterioration around the terminals can allow electricity to take an unintended path.
Functions
- Provides connection points for the ignition leads.
- Passes ignition voltage from the rotor towards the spark plugs.
- Separates the high-voltage paths within the distributor assembly.
- Shields the enclosed contacts from external contamination.
Technical Details
- Brand: OE Match.
- Component: ignition distributor cap.
- Supplied reference: 92860290200.
- Listed 928S engine specification: 4.7L.
Symptoms of Fault
- Misfiring that becomes more noticeable in damp weather.
- Uneven idling or hesitation when accelerating.
- Starting difficulty or occasional failure to start.
- Fine cracks around the lead connections.
- Dark tracking lines or evidence of electrical arcing inside.
- Oxidised, corroded or visibly eroded contacts.
Why Replacement Matters
A cracked housing, damaged insulation or deteriorated contacts can interrupt the intended ignition path. Renewal addresses cap-related faults once inspection has established the cause. Check the rotor, lead condition and connections during diagnosis: similar running problems can originate elsewhere, so symptoms alone do not confirm that the cap requires replacement.
FAQs
Does an intact exterior rule out failure?
No. Internal tracking or insulation deterioration may be present even when the outside appears undamaged.
Why can damp conditions make misfiring worse?
Moisture on contaminated insulating surfaces can make unintended electrical discharge more likely.
Should the rotor also be inspected?
Yes. Examine both components for wear and damage rather than assuming that only the cap needs attention.
Can cleaning resolve the problem?
Removing contamination may offer temporary improvement, but cleaning does not repair cracked insulation or established tracking damage.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
92860290200
The product you are viewing cross references to these numbers
- Porsche 928S 4.7L 1981-83
Shop Securely
12 Month Warranty
Worldwide Delivery
Monday-Friday: 8.30am - 5.30pm (GMT)
Saturday: Closed
Sunday: Closed