Replacing your 6.6L Duramax injectors? Having trouble identifying which injectors you have? Please see the images and information below for guidance on ordering the correct injectors for your engine.
Injector Bodies:
0986-435-520, 0986-435-521, & 0986-435-504
The 0986-435-520 and -521 injectors have a chamfer cut below the mounting flange. Look at the arrow on the pictures below and compare with the flat mounting flange design on the -504 injector.
0986-435-520 & 0986-435-521
Injector Bodies
0986-435-504 Injector Bodies
The connector keying is different between the 0986-435-520 and 0986-435-521 injector. Look at the key configuration of the connector in the pictures below..
0986-435-521 Connectors
0986-435-520 Connectors
0986-435-504 Connectors
For more help or information identifying your injectors, please contact our team at 800-658-9333 or ecominfo@mddistributors.com. You can also shop online at www.mddistributorsstore.com.
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