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Indian Motorcycle
Auto-lite Distributor Cross Reference
Indian Part Number To Auto-lite Number

    A while back for some reason I got curious about the numbers stamped on the small tag attached to Indian Auto-lite distributors.  What did these numbers mean?  To say they are a bit cryptic is an understatement.  Using Indian parts books, Auto-Lite service and parts manuals and with the help of members of the Starklite Indian mailing list, getting on my hands and knees looking at many original distributor tags and documentation research, I've been able to assemble the following chart.  It is by no means complete.

Note 1.  Your distributor tag probably has an alpha-numeric suffix following the stamped  IGB or  IGW number.  I think this is a date code of some sort but have been unable to break it.

Note 2. Based on original Auto-lite literature, I believe all Indian Auto-lite distributors numbers begin with an "I".  However a few original distributor tags have been observed beginning with GW or GB.  I believe this is due to poor quality control when they were originally stamped - the "I" being inadvertently left off.

Note 3. The advance given is distributor degrees (2 x engine degrees) and should not be confused with basic engine timing.

Note 4.  It has been brought to my attention that some Indian parts books list the same distributor advance control arm for all models (this is the part that determines the amount of distributor advance), twins and Fours.  This seems contradictory to the information listed in the table.  The number of degrees of advance may be stamped on your control arm.  My gut feeling is to believe the Auto-lite parts books over the Indian books.  The folks who make the parts should know more about them than the buyer.

Note 5. For the military 741s, most of the reports I've received state the IGW 4053 was used and this is backed up by the February, 1942 741 parts book.  However, a friend of mine has an untouched NOS 741 engine still in the Indian crate.  This engine has an IGW 4049 distributor.  This is a replacement engine with no serial number.  Hmm, more mysteries!
 

A special thanks to Perry Ruiter for help with the Indian part numbers and specs from his Auto-lite documentation.
 
 
 
  Indian P/N Auto-lite Number Cylinders Rotation Condenser Degrees of manual Advance Cam Dwell Angle Notes
1933

Four

*
*

IGB 4005E

 *

4

 *

RH

*

.20-.25 mfd

*

25

 
1934

Four

*

100628

 *

IGB 4005E

4

RH

.20-.25 mfd

25

 
1935

Four

 *

100628

IGB 4005E

4

RH

.20-.25 mfd

25

 
1936

Four

Chief

Std Scout

Sport Scout

Scout Pony

*

86061

86058

86058

86058

86058

*

IGB 4005E

IGB 4105A

IGB 4105A

IGB 4105A

IGB 4105A

*

4

2

2

2

2

*

RH

RH

RH

RH

RH

*

.20-.25 mfd

.20-.25 mfd

.20-.25 mfd

.20-.25 mfd

.20-.25 mfd

*

25

25

25

25

25

 
1937

Four
 

Chief

Std Scout

Sport Scout

Junior Scout

*

86061
 

86058

86058

86058

86058

*

IGW 4019A
IGW 4047A

IGB 4105A

IGB 4105A

IGB 4105A

IGB 4105A

*

4
4

2

2

2

2

*

RH
RH

RH

RH

RH

RH

*

.20-.25 mfd
.20-.25 mfd

.20-.25 mfd

.20-.25 mfd

.20-.25 mfd

.20-.25 mfd

*

25
22.5

25

25

25

25

*
 
1938

Four

Chief
 

Sport Scout
 

Junior Scout

*

86061

86059
?

86059
?

86058

*

IGW 4047A

IGW 4049
IGW 4046

IGW 4049
IGW 4046

IGW 4048A

*

4

2
2

2
2

2

*

RH

RH
RH

RH
RH

RH

*

.20-.25 mfd

.20-.25 mfd
.20-.25 mfd

.20-.25 mfd
.20-.25 mfd

.20-.25 mfd

*

25

18
25

18
25

18

*
 
 

39
 

39

 
1939

Four

Chief
 

Sport Scout
 

Junior Scout

*

86061

86059
?

86059
?

86058

*

IGW 4047A

IGW 4049
IGW 4046

IGW 4049
IGW 4046

IGW 4048A

*

4

2
2

2
2

2

*

RH

RH
RH

RH
RH

RH

*

.20-.25 mfd

.20-.25 mfd
.20-.25 mfd

.20-.25 mfd
.20-.25 mfd

.20-.25 mfd

*

25

18
25

18
25

18

*
 
 

39
 

39

 
1940

Four

Chief

Sport Scout

Thirty-Fifty

*

86382

86059

86059

86058

*

IGW 4047B

IGW 4049

IGW 4049

IGW 4048A

*

4

2

2

2

*

RH

RH

RH

RH

*

.20-.25 mfd

.20-.25 mfd

.20-.25 mfd

.20-.25 mfd

*

22.5

18

18

18

*
 
 

39

39

 
1941

Four

Chief

Sport Scout

Thirty-Fifty

841

741

*

86382

86059

86059

86058

76216

86759

*

IGW 4047A

IGW 4049

IGW 4049

IGB 4048A

IGW 4165A

IGW 4053

*

4

2

2

2

2

2

*

RH

RH

RH

RH

RH

RH

*

.20-.25 mfd

.20-.25 mfd

.20-.25 mfd

.20-.25 mfd

.20-.25 mfd

20-.25 mfd

*

22.5

18

18

18

Automatic

18

*
 
 

39

39
 
 

39

39


 
 
 
 
 
 
 

adv. 15deg @925rpm

1942

Four

Chief

Sport Scout

Thirty-Fifty

741

*

86382

86059

86059

86058

86759

*

IGW 4047A

IGW 4049

IGW 4049

IGW 4048A

IGW 4053

*

4

2

2

2

*

RH

RH

RH

RH

*

.20-.25 mfd

.20-.25 mfd

.20-.25 mfd

.20-.25 mfd

*

22.5

18

18

18

*
 
 

39

39

 
1943

Chief

741

*

86759

86759

*

IGW 4053

IGW 4053

*

2

2

*

RH

RH

*

.20-.25 mfd

.20-.25 mfd

*

18

18

*

39

39

 
1944

Chief

741

*

86759

86759

*

IGW 4053

IGW 4053

*

2

2

*

RH

RH

*

.20-.25 mfd

.20-.25 mfd

*

18

18

*

39

39

 
1945 - 53

Chief

*

86759

*

IGW 4053

*

2

*

RH

*

.20-.25 mfd

*

18

*

39

 

 

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