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Bosch Distributor Cap | 03240

Mercedes 190E, 300E, 300CE, 300SE, 300SEL, 300TE, 260E
$71.99
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$74.99
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$170.00
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P/N: 03240 Bosch OEM FREE SHIPPING
Description:
1 per car.
Cross References:
  • 1031580002
  • 1235522384
  • 12355223840U1
  • W01331616883
  • Original equipment Bosch distributor cap replacement for Mercedes distributor cap part number 1031580002
  • This protective cap located at the top of the ignition distributor directs voltage from the distributor rotor to each spark plug wire for ignition spark and cylinder combustion on Mercedes M103 L6 engines
  • (1) per vehicle
  • Replaces cracked distributor rotors that are allowing ignition voltage to arc to the engine creating a weak spark or no spark at all in the cylinders
  • Recommended to be replaced every 30,000 along with distributor rotor, spark plug wires, and spark plug as part of routine ignition system maintenance
  • Fits Mercedes 190E 2.6L 1987-1993, 260E 1987-1989, 300CE 1988-1989, 30E 1986-1993, 300SE 1988-1991, 300SEL 1988-1991, and 300TE 1988-1993

The distributor cap on your Mercedes 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 Mercedes 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 Mercedes 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

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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.

Mercedes
87-93 - 190E 2.6
87-89 - 260E
88-89 - 300CE
86-93 - 300E Base, 2.6, 4Matic
88-91 - 300SE
88-91 - 300SEL
88-93 - 300TE Base, 4Matic