Injectors

Discussion relating to the Scirocco 1982-1991 - - please ask technical questions in the technical/trouble shooting section

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Scoobi25
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Injectors

Post by Scoobi25 » Sun May 15, 2022 9:57 pm

The injectors on my Scirocco 1.8i DX has a mixture of 2 different part numbers 0437502032 and 0437502043 fitted to it. Anyone know what the difference between these 2 are as they both look identical apart from the part number.



GT_II
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Re: Injectors

Post by GT_II » Mon May 16, 2022 1:03 am

These are both Bosch part numbers, and both listed on various retail website as suitable for the DX engine. I guess there might be a subtle difference in calibration, or one might have superseded the other.


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mark1gls
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Re: Injectors

Post by mark1gls » Mon May 16, 2022 10:46 am

As above they look similar, Bosch K jet was used in lots of car in the 80s and 90s.

There is 2 main difference in the injection system as VW fitted later air shroud injector like the ones in your link above, there should be an rubber air hose at the back of the head between cylinders 3 and 4 to make full use of the air shroud injector as they are meant to atomised the fuel better.
The other difference is type of thread on the fuel lines and injector, course thread or fine thread.


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Scoobi25
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Re: Injectors

Post by Scoobi25 » Mon May 16, 2022 2:30 pm

Mine does have the air hose at the back of the engine and both injectors have the air shroud fitted and are both the same thread. I will check a few sights and order what is available. Thank you



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Blueshark
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Re: Injectors

Post by Blueshark » Mon May 16, 2022 9:08 pm

1 type has M10 and the other M12 threading.



GT_II
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Re: Injectors

Post by GT_II » Tue May 17, 2022 12:17 am

0437502032 and 0437502043 both appear to be M10 and 0437502047 M12.


1992 VW Scirocco GT II 1.8 90PS Brilliant Black 30k
2011 VW Caddy Van C20 Startline 1.6 TDI 102PS 65k
2015 Skoda Yeti SE Outdoor 1.2 TSI DSG 105PS 35k
2013 Fiat 500 Pop 1.2 69PS 40k
2009 VW Fox 1.2 54PS 60k
2009 Smart Fortwo Passion 1.0 mhd 71PS 25k

Scoobi25
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Re: Injectors

Post by Scoobi25 » Tue May 17, 2022 4:13 pm

GT_II wrote:
Tue May 17, 2022 12:17 am
0437502032 and 0437502043 both appear to be M10 and 0437502047 M12.
Yes they are both M10