Click the image to expand

Bosch Distributor Cap | 03212

BMW 320i, 318i
VW Jetta, Golf, Vanagon, Cabriolet, Scirocco, Corrado, Quantum
In Stock Status
In Stock Information Icon
Leaves warehouse within 1-2 business days.

Make Sure It Fits

P/N: 03212 Bosch OEM
1 per car.
Cross References:
  • 027905207
  • 03036
  • 055905207
  • 12111326765
  • 12111706113
  • 12111706122
  • 1235522213
  • 1235522370
  • W01331634280
  • W01331635629

The distributor cap on your vehicle 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 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 Bosch 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.

Why Buy OEM & Genuine Replacement Auto Parts from AutohausAZ?

Auto parts at wholesale prices is what you will find at AutohausAZ. Have you been searching the web for auto parts for your vehicle? You have come to the right place! Here at Autohaus, we strive to offer low prices on quality replacement parts and providing first rate customer service.

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.

84-85 - 318i
80-83 - 320i
85-85 - Cabriolet
For models with engine serial number from 140001, approximately 10/1984.
86-86 - Cabriolet
For models with production date through 9/1986.
90-90 - Corrado
For 1990 models with chassis serial number through 012000.
85-87 - Golf Base, Custom, GL
85-87 - Golf GT, GTI
Can also use shielded cap 03214.
87-88 - Golf GL
Valvesper Engine: 8
85-86 - Jetta Base, GL
90-90 - Jetta GL
To 12/89; Valvesper Engine: 8
87-89 - Jetta
Valvesper Engine: 8
85-85 - Quantum DLX
86-86 - Scirocco
For models with production date from 8/1985 through 4/1986.
85-85 - Scirocco
From 10/84
86-86 - Scirocco 16-Valve
Valvesper Engine: 8
86-89 - Vanagon Base, Syncro
84-85 - Vanagon
For models with chassis serial number from 155001, approximately 7/1984.
90-90 - Vanagon Base, Syncro
For models with chassis serial number through 060000, approximately 2/1990.
84-84 - Vanagon Diesel
From 7/84 VIN 24.E.155 001