Difference between Blue and Yellow injectors - HCS Snowmobile Forums

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Old 12-06-2019, 07:08 PM   #1 (permalink)
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Default Difference between Blue and Yellow injectors

Ok engine gurus. What is the difference between the Blue and Yellow injectors. People say fuel flow. Well the factory Bosch part number is the same printed on the injectors, 0280158290. Polaris part numbers are 4013258-027 for blue and 4013258-053 for yellow. If the Bosch part number is the same for both, then the flow of the injector is the same, so why the change in color from Poo. ??
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Old 12-06-2019, 09:29 PM   #2 (permalink)
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Feom what i recall they were different flows/spray patterns from bosch. Polaris superceded the blue/red with yellow. You cannot buy blue injectors anymore, only yellow. There was actually blue/red/yellow used in 2011-2012? until they settled on the yellow as the best. The ecm has to match the injectors (they can be reprogramed for yellow.)

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Old 12-07-2019, 12:33 AM   #3 (permalink)
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They are all the same injector but some flow more or less . Identified by color.
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Old 12-07-2019, 04:03 PM   #4 (permalink)
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Current Sled(s): 12' S/B Assault 09' IQ600 136" 04' XC800 mod
Previous Sled(s): 2 Alouettes 1 Doo 15 Polaris
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Favorite Riding Area: Great Sacandaga Lake
19-20 Mileage:
18-19 Mileage: 600
17-18 Mileage: 485
16-17 Mileage: 507
Age: 50
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The Bosch part number on the injector is the exact same part number on the blue and yellow injector. It leads me to believe that Polaris simply changed the tune in the ECU to make the program flow at different rates throughout the rpm range. If the injectors had different part numbers, then I would say it is a flow/pattern change in the injector or the way the injector is built, but same number, same injector. I think it is simply a way for identifying what tune is in the sled based at simply looking at the color on the harness. I just had my Blue injectors cleaned and checked. I have the flow rate from the shop. I think I might bring the new Yellow injectors over and see what they flow compared to the Blue.
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