FJ503 Spider Fuel Injectors 6 Cylinder Compatible with Chevy Silverado
- 6 cylinder engines, listed for Chevy Silverado
- FJ503 Spider style fuel injectors
- 1.59 lb item weight
- Machined exterior finish
- Part GMCPYZA10001, match it to your old injectors
Last refreshed Oct 2, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A replacement injector set for six cylinder Chevy Silverado trucks. Confirm the part number against your engine first, because the listing gives no flow rate or connector details.
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ASIN: B0DKTF823RModel: GMCPYZA10001Category: Fuel Injectors
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Overview
A Silverado owner with a failing injector and a six cylinder engine gets a replacement set here. The listing names a Spider injector design and a machined exterior, and says nothing else about the nozzle or the connector.
Reason to consider it is the narrow listing: one truck line and one part number, which makes cross-checking simple. The limitation is thin data. Flow rate, impedance, connector type and warranty are all absent, so match them to your old injectors yourself.
Who it's for
A home mechanic doing an injector swap on a six cylinder Silverado fits the profile. Anyone running a different engine, or tuning for more fuel flow, should look for a listing that publishes flow data.
Pros and cons
- Names a specific truck line
- Machined exterior finish
- Single clear part number
- Flow rate not listed
- Connector type unspecified
- Warranty terms missing
- Model years left out
Performance notes
Injector output depends on spray pattern, flow rate and how cleanly the valve opens and closes. The listing publishes none of these, so the result comes down to how closely the unit matches the original calibration. Replacing every injector at once avoids uneven fuel delivery between cylinders.
Specifications
| Brand | GZGN |
|---|---|
| Model | GMCPYZA10001 |
| Engine cylinders | 6 cylinders |
| Replaces OEM number | GMCPYZA10001 |
| Material | Machined |
| Model number | GMCPYZA10001 |
| Item weight | 1.59 pounds |
Frequently asked questions
How do I install the GZGN FJ503 fuel injectors on a Silverado?
The listing gives no installation steps or hardware list. Match part number GMCPYZA10001 to your old injectors and follow your service manual for relieving fuel pressure and removing the fuel rail.
Do these fit every Chevy Silverado?
The title names Chevy Silverado with a six cylinder engine but gives no model years. Check your engine and year before ordering.
Is this a full fuel system kit?
The listing describes fuel injectors only. No rail, regulator, pump or seals are mentioned.