#6 in Automotive fuel system parts
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Reddit mentions of Standard Motor Products FJ503 Fuel Injector
Sentiment score: 1
Reddit mentions: 1
We found 1 Reddit mentions of Standard Motor Products FJ503 Fuel Injector. Here are the top ones.
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- Country Of Origin : China
- The Package Height Of The Product Is 3.37 Inches
- The Package Length Of The Product Is 2.0 Inches
- The Package Width Of The Product Is 1.43 Inches
Features:
Specs:
| Height | 12 Inches |
| Length | 8 Inches |
| Number of items | 1 |
| Release date | August 2020 |
| Weight | 1 Pounds |
| Width | 11 Inches |
This explains it way better than I could:
MPFI Conversion
Basically, the original system is central sequential port injection (CSFI), and prone to fouling, sticking, and leaking at the poppets from carbon buildup. GM revised the design in '02, and the new, much-improved multi-port fuel injection (MPFI) unit is 100% backwards compatible. You can get them from most any auto parts supplier, I bought mine on Amazon. It's not cheap, (~$300), but it works much better than the old design and is literally a drop-in replacement.
The work is pretty easy if you're comfortable under the hood, and iirc, the new unit comes with instructions for doing the conversion. Remember to pick up a intake gasket set since you'll be pulling the upper half of the intake out.
This is the new unit
ACDelco 217-3028 Fuel Injector on Amazon.
Cheaper, non-OEM part on Amazon.