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Bosch Distributor Cap | 12111715905

BMW 325i, 535i, 525i, M5, 325is, 325e, 528e, 635CSi, 325iC, 735i & more
$84.99
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$88.53
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$188.50
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P/N: 12111715905 Bosch OEM FREE SHIPPING
Description:
For ignition distributor with 3-bolt, bolt-on type rotor.
Cross References:
  • 03228
  • 03252
  • 12111285058
  • 12111720124
  • 12111722649
  • 12111725070
  • 1235522365
  • 12355227421
  • W01331615333
  • W01331619989

The distributor cap on your BMW is used to distribute voltage from the ignition distributor, through the spark plug wires, to the spark plugs to create the spark needed for engine combustions. Electrical contacts for each spark plug wire on the inside of the distributor cap isolate and route voltage from the distributor to each spark plug wire independently. Some distributor caps also have an electrical connection for a wire from the ignition coil to send high voltage to the ignition distributor. Additionally, the distributor cap protects the internal parts of the ignition distributor, keeping out dirt and debris from the engine that could damage the ignition distributor. The distributor cap functions by having high voltage created by the ignition coil enter the ignition distributor which sends the voltage through a spinning rotor with an electrical contact that when comes into contact with the electrical contacts on the inside of the distributor cap, allows the voltage to flow to a spark plug wire.

Distributor cap contacts wear from the transfer of electricity jumping from the distributor rotor to the cap and from the cap to the spark plug wires. In addition, distributor caps are made from hard plastic which deteriorates from engine heat and becomes brittle overtime. Because of these things, distributor caps must be replaced regularly as part of routine maintenance.

Replacing Your BMW Distributor Cap

Distributor caps should be replaced at the same time as spark plugs along with the distributor rotor and spark plug wires. Distributor cap replacement intervals vary based on manufacturer’s recommendations and range from 30,000 to 60,000 miles.

Distributor cap replacement is often very simple. By pulling off the spark plug wires on the top of the cap and either unclipping or unscrewing the distributor cap from the ignition distributor, the cap can be lifted off and replaced.

View more BMW Distributor Caps.

Bosch is the world's largest supplier of components to the automotive industry. The Bosch product line includes alternators & starters, brakes, electronic controls and sensors, fuel system parts and management, ignition system components, and steering system components. All Bosch automotive parts are either OEM (Original Equipment Manufacturer) or made to their specs as a replacement part for the OEM unit.
Left = Driver side and Right = Passenger side.
All parts are priced individually unless identified as a set or kit. "Per car" notes identify how many of a given part your car has and "Left/Right or Front/Rear" notes means the part fits the left or right side of the car. These parts are still sold individually and you'll need to select the appropriate quantity if you plan to replace more than one of this item.

Frequently Viewed Together

We found 10 additional part(s) that are frequently viewed together.

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What This Bosch Distributor Cap Fits?

Application information below is for reference only and should not be used to determine the exact vehicle fitment. Please use the "Make Sure It Fits" vehicle selection box above to determine the exact fitment and review any application notes. If you need any help determining if this part works with your vehicle, please don't hesitate to contact us.

BMW
87-88 - 325
84-87 - 325e
87-91 - 325i E30
92-93 - 325i E36
Body Type: Convertible
87-92 - 325iC E30
93-93 - 325iC
Body Type: Convertible
87-91 - 325is E30
88-91 - 325iX E30
89-90 - 525i
84-88 - 528e
82-83 - 528e
For models with upgraded ignition system, bolt-on rotor not push-on.
84-84 - 533i
For models with production date from 1/1984 or with upgraded ignition system, bolt-on rotor not push-on.
83-83 - 533i
For models with upgraded ignition system, bolt-on rotor not push-on.
85-93 - 535i
88-88 - 535is
82-82 - 633CSi
Bolt on Rotor; Manufacturer Body Code: E24
84-84 - 633CSi
For models with production date from 1/1984 or models with upgraded ignition system.
83-83 - 633CSi
For models with upgraded ignition system, bolt-on rotor not push-on.
85-89 - 635CSi