Electronic Ignition Conversion Kit
for early 4-cylinder
Non-Vacuum-Advance Bosch Distributors
with 2-Piece Points
For 12-Volt, Negative Ground Electrical Systems Only
Early, non-vacuum-advance, 4-cylinder Bosch distributor with 2-piece points.
Note upright brass pivot pin.
If a Bosch distributor has 2-piece points, an upright brass pivot pin will remain,
standing up from the breaker plate, after the points have been removed.
3BOS4C2 Electronic Ignition Conversion Kit: Fits certain VW, Porsche, BMW, Alfa-Romeo, Mercedes-Benz, Volvo, Volvo-Penta, etc., with non-vacuum-advance distributors with 2-piece points, including these Bosch distributors:
0 231 100 041
0 231 110 041
0 231 129 010
0 231 129 019
0 231 129 022
0 231 153 009
Also available in 6-cylinder version -
The Hot-Spark electronic ignition conversion kit replaces breaker points and condenser in the distributor to provide rock-solid reliability. With the Hot-Spark electronic ignition, dwell and timing are always spot-on accurate.
No matter how strong your engine is, you won't get the most out of it without a good spark. The stock Bosch ignition system used technology that dates back a century - to the Kettering system, which was introduced in the 1910 Cadillac. Even though you can adjust breaker points for near-electronic ignition performance, they will burn and wear within a few thousand miles, long before the recommended replacement interval. With points, the timing will drift; power and fuel economy will suffer.
The Hot-Spark electronic ignition conversion kit delivers a strong spark every time and is maintenance-free. You'll notice quicker starts, more top end power and a little gas mileage boost. It's as easy to install as points and condenser!
Advantages of the Hot-Spark electronic ignition conversion kit:
Replaces points and condenser with solid-state electronics
Set it and forget it - Never adjust points and timing again!
Delivers far more voltage to the spark plugs than points-based points
Reliable Hall-effect technology
Never gets out of adjustment
Dwell and timing are always spot-on accurate
Increased gas mileage, fuel economy
Longer spark plug life
Longer engine life
Cleaner engine oil due to less unburned fuel
Longer interval between oil changes
Easy to install - If you can install points, you can install the Hot-Spark electronic ignition conversion
No points to wear, burn, pit or corrode
No condenser needed
Absolutely no points float - zero - even at redline RPM and beyond!
Never worry about drifting dwell or timing again
No rubbing parts - nothing to wear out!
Fits completely under the distributor cap
Stealth modification - maintains stock appearance
Includes everything you need, no external ignition box required.
Works with stock distributor and coil
Encased in high-temp thermoplastic - protected from the elements and oil, grease, dirt, water, etc.
Never bother with points or condenser again!
The best investment you'll ever make for your vehicle
Saves precious ($$$) fuel
Stock Bosch points coil with 3.0 Ohms or more internal, primary resistance required.
The Bosch Black Coil with 3.4 Ohms primary resistance is ideal for Hot Spark ignition kits.
External Ballast Resistor: If the charging system voltage, measured at the coil's + terminal, is more than 13.9 volts at any RPM level, the voltage regulator likely needs replacing or a 1.4 Ohm ballast resistor should be wired between the coil's + terminal and the red HotSpark ignition wire. Too much voltage can damage the ignition module and other electronic components.
Requires a 12-volt, negative ground electrical system.
How many miles until the Hot-Spark electronic ignition conversion kit pays for itself? Click here
Measuring Coil Resistance (and more): www.Hot-Spark.com/Coil.htm
Virtually all 4-cylinder, air-cooled VW/Porsche
distributors have right-pivoting points. Early Bosch distributors (generally
pre-1968 or so) have 2-piece points. Some BMW, Porsche and Mercedes distributors
have left-pivoting points; some have right-pivoting points.
Virtually all 4-cylinder, air-cooled VW/Porsche distributors have right-pivoting points. Early Bosch distributors (generally pre-1968 or so) have 2-piece points. Some BMW, Porsche and Mercedes distributors have left-pivoting points; some have right-pivoting points.Please compare the points in your Bosch distributor to the photo of points below:
Determine whether your Bosch distributor has single-piece points, as early (pre-1968 or so) Bosch distributors typically have 2-piece points. If it has 2-piece points, a brass pivot pin will remain, standing up from the breaker plate, after you remove the points.
The 3BOS4C2 ignition kit fits various Bosch 4-cylinder, Non-Vacuum-Advance Distributors with 2-Piece, right-pivoting points:
4-cylinder, Non-Vacuum-Advance Distributors with 2-Piece, right-pivoting points:
0 231 100 041 - 3BOS4C2
0 231 110 041 - 3BOS4C2
0 231 129 010 - 3BOS4C2
0 231 129 019 - 3BOS4C2
0 231 129 022 - 3BOS4C2
0 231 153 009 - 3BOS4C2
VE4BRS383 - 3BOS4C2
VJ4BR8 - 3BOS4C2
VJ4BR24 - 3BOS4C2
VJ4BR25 - 3BOS4C2
VJR4BR8 - 3BOS4C2
VJR4BR9 - 3BOS4C2
VJR4BR11 - 3BOS4C2
VJR4BR18 - 3BOS4C2
VJR4BR24 - 3BOS4C2
If a Bosch distributor has 2-piece points, an upright, brass pivot pin will remain, standing up from the breaker plate, after the points have been removed.
International Buyers – Please Note:
Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyer's responsibility.
Please check with your country's customs office to determine what these additional costs will be prior to bidding/buying.
VERY IMPORTANT -- BEFORE ORDERING: Some distributors of vehicles, boats, etc. may differ, according to whether the stock distributor is still in place or a replacement distributor has been installed. Some otherwise similar or identical engines use different distributor brands and/or different distributor part numbers. We need your distributor's brand name, distributor part number and number of engine cylinders to ensure that the electronic ignition conversion kit is correct one for your particular distributor.
Easy to Install -
Replace Points and Condenser
Electronic Ignition Conversion Kit. Replaces points and condenser in certain Bosch 4-cylinder, non-vacuum-advance distributors with 2-piece, right-pivoting points.
Foreign Orders: Shipping discount available if purchasing multiple items.
Dealer Inquiries welcomed.
© 2005-2022 Hot Spark®
© 2005-2022 Hot Spark®