View source for Fuel Pump / Progressive Refinements

{| class="wikitable"
! Date Introduced !! Chassis No. !! Unit No. !! Modification
|-
! 8 Apr. 1949
| 100 826 || 132 017 || Blue Solex diaphragm fitted with 4 seals<ref name=":1">“Engine, Clutch, and Heating System” In ''Progressive Refinements 1940 - 1961'', [http://volks.wiki/oacdp/progref4061/m001.jpg M-2]</ref>
|-
! Aug. 1949
| 1-0 117 389 || 148 542 || Genuine Solex in a number of cases<ref name=":2">“Engine, Clutch, and Heating System” In ''Progressive Refinements 1940 - 1961'', [http://volks.wiki/oacdp/progref4061/m002.jpg M-3]</ref>
|-
! Dec. 1949
| from 1-0 134 921<br>up to 1-0 134 966 || from 166 091<br>up to 166 135 || Straight push rods with conical transition<ref name=":3">“Engine, Clutch, and Heating System” In ''Progressive Refinements 1940 - 1961'', [http://volks.wiki/oacdp/progref4061/m002.jpg M-4]</ref>
|-
! Dec. 1949
| from 1-0 135 268<br>up to 1-0 136 157 || from 166 439<br>up to 167 412 || Straight push rods with conical transition<ref name=":3"></ref> 
|-
!March 1950
|
|
|Only black, flexible diaphragms fitted from now on
|}

== Notes ==

== References ==