









⛽ Upgrade your ride with precision fuel delivery—because your engine deserves the best!
The GZGN FJ503 Spider Fuel Injectors are precision-engineered replacements compatible with a wide range of 4.3L V6 Chevy, GMC, and Isuzu models from 1996 to 2014. Featuring OEM-spec spray patterns and fuel volumes, corrosion-resistant stainless steel components, and high-temperature sealing, these injectors optimize fuel atomization for enhanced engine performance and fuel economy. Backed by a 1-year warranty, they offer a reliable, cost-effective upgrade trusted by professionals and enthusiasts alike.















| ASIN | B0DKTF823R |
| Best Sellers Rank | #57,276 in Automotive ( See Top 100 in Automotive ) #26 in Automotive Replacement Fuel Injectors |
| Brand | GZGN |
| Customer Reviews | 4.1 4.1 out of 5 stars (41) |
| Date First Available | October 24, 2024 |
| Exterior | Machined |
| Item Weight | 1.68 pounds |
| Item model number | GMCPYZA10001 |
| Manufacturer | GZGN |
| Manufacturer Part Number | GMCPYZA10001 |
| Model | GMCPYZA10001 |
| Package Dimensions | 14.21 x 6.3 x 5.31 inches |
V**T
Works great
I installed the injector on myb1998 chevy silverado, and installed perfect. I have had it on my truck for about a month now without any problems. I recommend it for a cheaper fix the $400 at the local parts house.
J**S
Very good quality!!!
Great quality for an economical price. Works just like the really expensive ones do. And built with quality components to last as well. Thank you Amazon!
V**W
Cheap junk - nothing but misfires
Crappy - got it installed and nothing but misfires on cylinders, put my old one back on and misfires gone. Of course, I missed the return window by one day, so this review will have to do. Don't waste your money, cheap junk
L**T
Fuel injection spider
Worked exactly. Hopefully will last a long time.
G**N
Will buy again!
I have installed this type of injector many of it for the past 35 years, this is my first time purchasing a very low cost and got surprised on how sturdy it was made, it requires lots of pressure by twisting, bending but it held up and absolutely no fuel leak. I'm very impressed. Thank you
A**H
Excelente calidad simplemente cumple con su trabajo, instalado en chevy silverado 1500 2004.
G**6
Good
Good
B**N
Best bang for your buck
Works great, have it on a 2000 chevy silverado with a manual transmission, the previous ones where complete junk once I had these installed I immediately felt the difference, however the first one I purchased seemed to have a fault but no worries, vendor took care of me immediately and sent me a new one free of charge, took about a week or two but regardless the part came and its been working great so far, would 100% buy again if needed in the future.
Trustpilot
1 month ago
2 weeks ago