---
product_id: 649331881
title: "Spider Fuel Injectors w/Return Fuel System FJ503 Compatible with Chevy GMC Isuzu Astro Blazer Express 1500 Silverado Jimmy Safari Savana Sierra 4.3 V6 1996-2014 Replacement for 17113673 19210688"
brand: "ena"
price: "90440 Ft"
currency: HUF
in_stock: true
reviews_count: 8
category: "Ena"
url: https://www.desertcart.hu/products/649331881-spider-fuel-injectors-w-return-fuel-system-fj503-compatible-chevy
store_origin: HU
region: Hungary
---

# 30%+ fuel efficiency boost Direct-fit easy install Durable metal-composite build Spider Fuel Injectors w/Return Fuel System FJ503 Compatible with Chevy GMC Isuzu Astro Blazer Express 1500 Silverado Jimmy Safari Savana Sierra 4.3 V6 1996-2014 Replacement for 17113673 19210688

**Brand:** ena
**Price:** 90440 Ft
**Availability:** ✅ In Stock

## Summary

> ⛽ Upgrade your ride, fuel your freedom!

## Quick Answers

- **What is this?** Spider Fuel Injectors w/Return Fuel System FJ503 Compatible with Chevy GMC Isuzu Astro Blazer Express 1500 Silverado Jimmy Safari Savana Sierra 4.3 V6 1996-2014 Replacement for 17113673 19210688 by ena
- **How much does it cost?** 90440 Ft with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hu](https://www.desertcart.hu/products/649331881-spider-fuel-injectors-w-return-fuel-system-fj503-compatible-chevy)

## Best For

- ena enthusiasts

## Why This Product

- Trusted ena brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Maximize Your MPG:** Experience up to 30% improved fuel economy in city driving—save more on every mile.
- • **Plug & Play Precision:** Direct-fit replacement designed for hassle-free installation on Chevy, GMC & Isuzu 4.3L V6 engines (1996-2014).
- • **Balanced Fuel Delivery:** Advanced flow-matched design optimizes fuel control, reducing waste and smoothing engine operation.
- • **Engineered for Longevity:** Composite nozzle and stainless steel construction ensure extended injector life and consistent performance.
- • **Warranty-Backed Confidence:** Includes 12-month warranty for peace of mind and reliable performance on every drive.

## Overview

ENA Spider Fuel Injectors with Return Fuel System (FJ503) are precision-engineered replacements compatible with a wide range of Chevy, GMC, and Isuzu 4.3L V6 models from 1996 to 2014. Featuring a durable metal-composite design and advanced flow-matched technology, these injectors deliver improved fuel efficiency, smoother engine performance, and easy direct-fit installation. Backed by a 12-month warranty, they are the smart upgrade for drivers seeking reliability and enhanced mileage.

## Description

Buy ENA Spider Fuel Injectors w/Return Fuel System FJ503 Compatible with Chevy GMC Isuzu Astro Blazer Express 1500 Silverado Jimmy Safari Savana Sierra 4.3 V6 1996-2014 Replacement for 17113673 19210688: Fuel Injectors - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: work great - easy install gas mileage improved exponentially 30% maybe in town,mileage went to around 18 mpg. I drove on the highway 80 miles on around 4 gallons of gas prior to that would have taken 3/4 tank easily. It continues to improve a lil but all in all worth every last cent 100% i’d buy again just hopefully not for this Jimmy. Be sure to check all connections before closing the lid it’s easer to correct a problem now because occasionally there’s issues with them.
Review: Works runs good - Fairly easy to install and runs really well, only problem is smoking out the exhaust. I am hoping that it's just the old fuel I have in it and will clear up doesn't smell like antifreeze or oil just a funny fuel smell.

## Features

- Vehicle Fitment-1: Fuel Injector Compatible with Chevrolet Silverado 1500 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 V6 4.3L, Blazer 2002 L6 4.2L, Blazer 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 V6 4.3L, Express 1500 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 V6 4.3L, S10 1996 1997 1998 1999 2000 2001 2002 2003 2004 V6 4.3L, Astro 1996 1997 1998 1999 2000 2001 2002 2003 V6 4.3L, Express 2500 1996 1997 1998 1999 2000 2001 2002 2003 V6 4.3L, C1500 1996 1997 V6 4.3L, K1500 1996 1997 V6 4.3L. Inyectore Compatible with Isuzu Hombre 1997-2000 V6 4.3L
- Vehicle Fitment-2: Fuel Injector Replacement for GMC Sierra 1500 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 V6 4.3L, Savana 1500 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 V6 4.3L, Jimmy 1996 1997 1998 1999 2000 2001 2002 V6 4.3L, Safari 1996 1997 1998 1999 2000 2001 2002 2003 2004 V6 4.3L, Savana 2500 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 V6 4.3L, Sonoma 1996 1997 1998 1999 2000 2001 V6 4.3L, C1500 1996 1997 1998 V6 4.3L, K1500 1996 1997 1998 V6 4.3L, P3500 1996 1997 V6 4.3L. Inyectore de gasolina Compatible with Oldsmobile Bravada 1996 1997 1998 1999 2000 V6 4.3L
- ENA Injector Reference Number: FJ503 17113673 19210688 17113673 FJ10565 8001512N 12568332 2173028 89060439 240408 4G1887 17114164 25331863 17113295 17113215 17115379 17113673. The ENA fuel spider injector assembly featuring an advanced flow-matched design, ensure smooth engine operation and precise fuel control while balancing fuel delivery to reduce overall fuel consumption
- The ENA Spider Fuel Injector fits models with a return fuel system, But Does Not fit a returnless fuel system. ENA Spider Injector Specifications: 1. Fuel Injector Type: MFI Injector; 2. Fuel Type: Gas; 3. Terminal Quantity: 12; 4. Terminal Gender: Male; 5. Terminal Type: Pin; 6. O-Rings Included: Yes, preinstalled; 7. Injector Design: Metal and composite plastic. The ENA 4.3 injector set, a direct-fit replacement that allows for easy installation, integrates a composite - material nozzle for enhanced durability and extended service life
- Package Content: Set of 1 Fuel Spider Injector; 12-Month Warranty. Please use the desertcart Confirmed Fit function and enter your vehicle information for a correct compatibility

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CZ4JND21 |
| Best Sellers Rank | #115,352 in Automotive ( See Top 100 in Automotive ) #96 in Automotive Replacement Fuel Injectors |
| Brand | ENA |
| Customer Reviews | 4.0 4.0 out of 5 stars (40) |
| Date First Available | March 26, 2024 |
| Exterior Finish | Stainless Steel |
| Global Trade Identification Number | 00196651067834 |
| Inlet Connection Type | Flare |
| Item Weight | 1.7 pounds |
| Item model number | Express 1500 S10 C1500 K1500 and More |
| Manufacturer | ENA |
| Manufacturer Part Number | ENA7795121601 |
| Material | Stainless Steel, Carbon Steel, Alloy Steel, or Brass |
| Number of Ports | 2 |
| OEM Part Number | Replacement For FJ503 8001512N |
| Outlet Connection Type | Flare |
| Package Dimensions | 14.21 x 6.26 x 5.43 inches |
| UPC | 196651067834 |

## Product Details

- **Brand:** ENA
- **Exterior Finish:** Stainless Steel
- **Global Trade Identification Number:** 00196651067834
- **Inlet Connection Type:** Flare
- **Manufacturer:** ENA
- **Material:** Stainless Steel, Carbon Steel, Alloy Steel, or Brass
- **Number of Ports:** 2
- **Outlet Connection Type:** Flare
- **UPC:** 196651067834

## Images

![Spider Fuel Injectors w/Return Fuel System FJ503 Compatible with Chevy GMC Isuzu Astro Blazer Express 1500 Silverado Jimmy Safari Savana Sierra 4.3 V6 1996-2014 Replacement for 17113673 19210688 - Image 1](https://m.media-amazon.com/images/I/61YZgFGA0xL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ work great
*by B***Y on November 7, 2024*

easy install gas mileage improved exponentially 30% maybe in town,mileage went to around 18 mpg. I drove on the highway 80 miles on around 4 gallons of gas prior to that would have taken 3/4 tank easily. It continues to improve a lil but all in all worth every last cent 100% i’d buy again just hopefully not for this Jimmy. Be sure to check all connections before closing the lid it’s easer to correct a problem now because occasionally there’s issues with them.

### ⭐⭐⭐⭐ Works runs good
*by J***. on November 5, 2025*

Fairly easy to install and runs really well, only problem is smoking out the exhaust. I am hoping that it's just the old fuel I have in it and will clear up doesn't smell like antifreeze or oil just a funny fuel smell.

### ⭐⭐⭐⭐⭐ Double check before you buy
*by J***H on December 27, 2025*

I bought this part because of the good price. It was supposed to be a direct fit replacement. It did lock into the intake manifold, but the top cover for the intake may need to be changed because I could not lock the electrical connector into the fuel injector assembly. This was not the fault of the manufacture.

## Frequently Bought Together

- ENA FJ503 Spider Fuel Injectors 6 Cylinder for 17113673 19210688 Compatible with Chevrolet GMC Isuzu Oldsmobile Astro Blazer Express 1500 Silverado Jimmy Safari Savana Sierra Sonoma V6 4.3 1996-2014
- FEL-PRO MS 95816 Fuel Injection Plenum Gasket Set for Chevrolet S10

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*Product available on Desertcart Hungary*
*Store origin: HU*
*Last updated: 2026-01-23*