Porsche Fuel Injection Pumps
Same Bosch, Different pumps
There's a general lack of fuel injection pump service providers and we regularly receive inquiries about Bosch products that aren't designed for Mercedes-Benz. While we otherwise stick to one brand, there's a need for work outside the Mercedes-Benz family which presents us with more opportunities to dive deeper into the world of fuel injection pump restoration. Porsche 911 pumps, such as the Bosch PED6KL 60/120 R3 X seen here from a 1974 Porsche 911S 2.7L Carrera, have their own unique characteristics from Mercedes-Benz pumps but open the door to a wider and equally-passionate clientele. Learn more about Porsche pumps by scrolling down or clicking the buttons below.
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AIR COOLED Thermostat
One of the most obvious differences between the Porsche PED6KL 60/120 R3 X and Z and those found in Mercedes-Benz vehicles, beyond the inline-6 versus 2-row plunger setup, is the large thermostat housing extending from the top right of the pump. In a pump from a Mercedes-Benz, like the PES6KL 70/120 R18z, the thermostat extends upwards with two small inlets for coolant.
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Since Porsches are air cooled, they do not have coolant and use exhaust gas for temperature readings. Exhaust flows through the thermostat housing over a stack of bimetallic discs which expand and contract based on the exhaust gas temperature which pushes the linkages, adjusting the fuel/air mixture. Learn more about those linkages on our main Governor Housing page.
Porsche Fuel Injection Pumps
PED6KL 60/120 R3Z
The PED6KL 60/120 R3 Z is a model of Bosch fuel injection pump for the 911.
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The most obvious difference from the R3X is the protective coating of the housing and governor. Like the Bosch pumps for Mercedes-Benz the housing and governor of the R3X are made with aluminum and have a brushed aluminum finish. The R3Z is made with a magnesium alloy and requires a protective coating which gives it a black finish. Earlier R3Xs also were made with magnesium and can be found with the black protective coating as well.
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YRS of Production
09/68-08/69
09/68-08/69
09/68-08/69
09/68-08/69
09/69-08/71
09/69-08/71
09/69-08/71
09/71-08/73
09/71-08/73
09/71-08/73
09/72-08/75
09/71-08/73
V94
V109
YEAR
'69
'69
'69
'69
'70/71
'70/71
'70/71
EUROPE '72/73
'72/73
'72/73
SC '72/73
USA '72/73
'73
'74
APPLICATION
911S 2.0L
911E 2.0L
911S 2.0L
911E 2.0L
911S 2.2L
911E 2.2L
911T 2.2L
911S 2.4L
911E 2.4L
911S 2.4L
911S 2.7L Carrera
911S 2.4L
911RSR 2.8L
911RSR 3.0L
BOSCH #
0 408 126 001
0 408 126 003
0 408 126 002
0 408 126 004
0 408 126 005
0 408 126 007
0 408 126 006
0 408 126 008
0 408 126 009
0 408 126 011
0 408 126 010
0 408 126 012
0 408 126 010
0 408 126 012
0 408 126 013
0 408 126 014
0 408 126 015
0 408 126 019
0 408 126 021
Before
AFTER
Porsche Fuel Injection Pumps
PED6KL 60/120 R3X
The PED6KL 60/120 R3 X is a model of Bosch fuel injection pump for the 911S 2.7 Carrera. Earlier produced R3Xs can be found with the black coating previously seen on the R3Z while those later in the production run were the brushed aluminum seen here.
Scroll back up to see the testing video for this pump.
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In the cutouts you can see the camshaft from the PED6KL 60/120 R3 X fuel injection pump alongside our meter for checking the camshaft bearing end play.
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Below you can see our technician testing the camshaft bearing end play to ensure proper movement is allowed following installation.
Porsche Fuel Injection Pumps
Vintage Documents
Different Brand of Vehicle, Same Bosch.
Much like their Mercedes-Benz counterparts, Bosch fuel injection pumps for Porsches are equally complex and little understood. We took our 20 years of experience, applied them to Porsche models and with a little more trial and error, not to mention help from original documentation like those seen here, we were able to seamlessly add Porsche fuel injection pumps to our ever-growing list of offerings.
