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American Bosch Substitution Table

Over the years, American Bosch has discontinued most of its magneto parts. While appearing at first to leave most of its customers "high-and-dry", they in fact have consolidated their parts listing to only those parts "absolutely required to get the job done/mag fixed." What does that mean? It means that if there is something close, then that is good enough. Need a 1 cylinder cap? Then buy a generic 4 cylinder cap and plug 3 of the holes. Was this the right thing for them to do? Probably not, but that is what they did. What it does mean is that when you look at and American Bosch parts list for a given mag, you may not find the cap you need. But, if you have the subsitution list (a closely guarded secret) then you can find a substitue.


Well, the substitution list is a secret no more! Here it is, dated April 1959. As I find other substitutions, I will include them as well. Also, just because a part is listed as a substitue, doesn't mean that it is available. Check with me and I will find out for you.


Original Part # Substitute Part # Subs. available? Special instructions

Distributor Caps

DP5213 DP5240 yes Fill ULH & LRH towers with wax.
DP5241 DP5239 yes Fill unused towers with wax.
DP5242 DP5240 yes Ground 2 lower unused towers.
DP52131 DP52231 no Ground 2 upper unused towers.
DP52134 DP5240 yes Ground 2 lower unused towers.
DP52136 DP5239 yes Fill unused towers with wax.
DP52180 DP52192 yes Fill unused towers with wax.
DP52181 DP52192 yes Ground LRH tower, fill LLH tower with wax.
DP52194 DP52192 yes Fill unused towers with wax.
DP52195 DP52192 yes Ground LRH tower, fill LLH tower with wax.
DP52196 DP52192 yes Use URH tower and ground the 3 unused towers.
DP52202 DP52192 yes Fill unused towers with wax.
DP52203 DP52192 yes Fill unused towers with wax.
DP52206 DP52192 yes Ground LLH tower.
DP52207 DP52192 yes Ground LLH tower.
DP52209 DP52192 yes Use URH tower and ground 3 unused towers.
DP52215 DP52316 yes Fill unused towers with wax.
DP52217 DP52277 no Ground the lower 2 unused towers.
DP52218 DP52277 no Ground the unused LLH tower.
DP52237 DP52231 no Ground the upper 2 unused towers.
DP52275 DP52316 yes Fill unused towers with wax.
DP52278 DP52277 no Ground the 2 lower unused towers.
DP52280 DP52277 no Ground the unused LLH tower.
DP52307 DP52231 no Fill the 2 unused towers with wax.
DP52331 DP52234 no Fill unused towers with wax.
DP52367 DP5239 yes Fill unused towers with wax.
DP52526 DP52519 no Fill unused towers with wax.
DP52545 DP52519 no Fill unused towers with wax.
DP52613 DP52607 yes Fill unused towers with wax.
DP52617 DP52607 yes Ground 2 upper unused towers.
DP52626 DP52610 yes Fill unused towers with wax.
DP52672 DP52654 no Ground the unused towers.
DP52688 DP52519 no Fill unused towers with wax.