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20 Best 4.3 Spider Injector Upgrade of 2023 – Romance University

After hours researching and comparing all models on the market, Romance University finds out the Best 4.3 Spider Injector Upgrade of 2023. Check our ranking below.

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SaleRank No. #1

FJ503 Spider Fuel Injectors Assembly w/Bracket Upgraded 6 Cylinder Spider Injectors Compatible with Chevy, GMC, Isuzu, Oldsmobile Models 4.3L V6 Engine, Replace# FJ503, FJ10565

【FITMENT】This fuel injector FJ503 is suitable for Chevrolet Models: 1996-2005 Astro, 1996-2005 Blazer, 1996-1998 C1500, 1996-2014 Express 1500, 1996-2005 Express 2500, 1996-1998 K1500, 1996-1999 P30, 1996-2004 S10, 1999-2013 Silverado 1500 4.3L V6 Engine Compatible with GMC Models: 1996-1998 C1500, 1996-2001 19Jimmy, 1996-1998 K1500, 1996-1999 P3500, 1996-2005 Safari, 1999-2013 Sierra 1500, 1996-2013 Savana 1500, 1996-2006 Savana 2500, 1996-2004 Sonoma 4.3L V6 Engine Compatible with LSuzu Models: 1997-2000 Hombre 4.3L V6 Engine Compatible with Oldsmobile Models: 1996-2001 Bravada 4.3L V6 Engine
【REPLACE OE NUMBER】Including FJ503, FJ10565, 1512N, 17113295, 17114164, 17091628, 12568332, 2173028, 217-3028, 25331863, 89060439, 833-22102-6, 800- 4G1887
【12-MONTH WARRANTY】If the fuel injectors fail, crack, stop working or have any other problems, you can rely on our service of carefree REPLACEMENT or REFUND
【HIGH-QUALITY EXPERIENCE】 The fuel injector kit is crafted from high-quality alloy steel body spring assemblies and high-density rubber materials, boasting exceptional hardness and temperature resistance. this ensures effective prevention of corrosion and buildup, guaranteeing leak-free operation and thereby extending the service life of the fuel injection system
【ENHANCED PERFORMANCE】The fuel spider injector assembly is manufactured to the OE specification to provide a factory-fresh appearance and direct fit, promoting smooth engine operation and balanced fuel delivery, reducing overall fuel consumption and eliminating miserable experiences with misfires or poor gas mileage

SaleRank No. #2

FJ503 Fuel Injector Compatible with Chevy Blazer S10 Express Silverado Astro GMC Jimmy 1500 C1500 K1500 Safari Spider Fuel Injector 4.3 V6 Vortec OE# 12568332 19210688 17113673 800-1512N FJ10565

【Upgrade Your Engine】XunDong FJ503 Spider Fuel Injector Assembly is designed to deliver a precise and consistent fuel spray pattern, ensuring efficient combustion and maximizing power output. With our fuel injector, you can expect improved acceleration, smoother idle, and enhanced fuel efficiency.
【Perfect Fits】Not only does our s10 fuel injector deliver superior performance, but it is also direct replacement for the OE# 12568332, FJ10565, 800-1512N, 240408, 217-3252, 4G1887, 17113673, 19210688, 17114164, 25331863, 17113295, 17113215, 17115379, 17113673 and etc. ; Don't worry if you're unsure about fitment, simply check the model compatibility in the product description or reach out to us for prompt assistance.
【Wide Compatibility】The silverado fuel injector Compatible for 4.3L Engine Chevrolet Astro 1996-2005, Express1500 1996-2006, Blazer 1996-2005, P30 1996-1999, S10 Pickup 1996-2004, C1500 Pickup 1996-1998, Express 2500 1996-2005, K1500 Pickup1996-1998, Silverado 1500 1999-2002, Oldsmobile Bravada 1996-2001 V6; 4.3L Engine GMC C1500 Pickup 1996-1998, Savana 1500 1996-2006, P3500 1996-1999, Safari 1996-2005, Jimmy 1996-2002, K1500 Pickup 1996-1998, Isuzu Hombre 1997-2000 V6;
【Well-made】The 4.3 spider injector is manufactured to meet or exceed OEM specifications, ensuring durability and longevity. Made from high-quality materials, our fuel injector is built to withstand the rigors of daily driving and harsh engine conditions. Plus, with easy installation, you can upgrade your engine quickly and hassle-free.
【Satisfaction Service】The express 1500 fuel injector comes with a no-worry 12-month product service. Each product has undergone rigorous testing and examination before shipment, and it will remain in good operating condition for as long as you own it. If the spider injector ever fails or you encounter any other problems, simply contact us for a good solution.

Rank No. #3

LOREADA Spider Injectors 4.3L, FJ503 Fuel Injector 6 Cylinder for Chevy Express Silverado P30 K1500 GMC Savana Jimmy Chevrolet Oldsmobile Bravada Isuzu V6 w/Bracket, OE # 17113673 FJ10565 19210688

【FJ503 Replace Part Numer】 FJ503 Spider Injectors 4.3 Vortec: 19210688, 12568332, 88894353; Fuel Injectors Motor : 17113273; Replace: FJ503, FJ10565, FJ10565-11B1, BWD63885, 4G1887, 63885,217-3028, 2173028, 25331863, 240408,217-3252, 2173252, 2173348, 217-3348, 2204510881, 89060439, 833-22102-6, 800-1512N, 17113295, 17114164, 17113673,17091628, 17115379, 322-04819, 16-9706,169706
【Confirmed Fit】 Fuel Spider Injectors 4.3 vortec Chevy V6 Engine compatible with 1996-2005 Chevrolet Astro; 1996-2005 Chevrolet Blazer; 1996-1998 Chevrolet C1500; 1996-2004 Chevrolet Express 1500 2500; 1996-1998 Chevrolet K1500; 1996-1999 Chevrolet P30; 1996-2004 Chevrolet S10; 1999-2004 Chevrolet Silverado 1500
【Confirmed Fit】Automotive Replacement Fuel Injectors for 1996-1998 GMC K1500; 1996-2002 GMC Jimmy; 1996-1999 GMC P3500; 1996-1998 GMC C1500; 1996-2005 GMC Safari; 1996-2004 GMC Savana 1500 2500 3500; 1996-2002 GMC Sonoma; 1997-2000 Isuzu Hombre; 1996-2001 Oldsmobile Bravada with 4.3L V6 Engine
【Function】High Quality Fuel injectors can effectively prevent fuel exposure, reduce fuel waste, improve fuel utilization, and minimize stickiness during use.There is a bracket in our package. Please be sure to fix the bracket on the injector before installing the injector. It can prevent other problems such as oil leakage
【Customer Service】 We offer 12 months product quality support service. This FJ503 Spider Fuel Injector comes as shown in the picture, Please read carefully before purchasing. If you are uncertain about the item, feel free to contact LOREADA for confirm

Rank No. #4

AdvanEX FJ503 Spider Fuel Injector Assembly w/Bracket Compatible with V6 4.3L GMC Jimmy Safari Savana chevrolet Blazer Silverado Express 1500 2500 Isuzu Oldsmobile Replace FJ10565 12568332

Fitment part 1: Compatible with 1996-2005 Chevrolet Astro, 1996-2005 Chevrolet Blazer, 1996-1998 Chevrolet C1500, 1996-2014 Chevrolet Express 1500, 1996-2005 Chevrolet Express 2500, 1996-1998 Chevrolet K1500, 1996-1999 Chevrolet P30, 1996-2004 Chevrolet S10, 1999-2013 Chevrolet Silverado 1500, 1996-2001 Oldsmobile Bravada (All fit 4.3L V6 models only)
Fitment part 2: Compatible with 1996-1998 GMC C1500, 1996-2002 GMC Jimmy, 1996-1998 GMC K1500, 1996-1999 GMC P3500, 1996-2005 GMC Safari, 1996-2013 GMC Savana 1500, 1996-2006 GMC Savana 2500, 1999-2013 GMC Sierra 1500, 1996-2004 GMC Sonoma, 1997-2000 Isuzu Hombre (All fit 4.3L V6 models only)
Replace Part Number: FJ503, FJ10565, 17113673, 322-04819,217-3028,16-9706,FJ10565, 800-1512N,4G1887, 240408, 217-3252, BWD63885, FJ10565-11B1
Product Benefits: Each product undergoes rigorous quality control be e it is delivered to you. Designed like a spider delivers fuel into the cylinder, can help better vehicles achieve higher fuel efficiency and better emission control
Superior Service: We offer a one year after-sales service. Provide you with a satisfactory shopping experience. If you have any questions, you can contact us, we will give you a satisfactory answer

SaleRank No. #5

Spider Fuel Injector 6 Cylinder w/Bracket for Express Silverado P30 K1500 Savana Jimmy Oldsmobile Bravada Isuzu 4.3L V6, Replace# FJ503 FJ10565

FJ503 Spider Fuel Injector Assembly is designed to deliver a precise and consistent fuel spray pattern, ensuring efficient combustion and maximizing power output. With our fuel injector, you can expect improved acceleration, smoother idle, and enhanced fuel efficiency
Fuel Injectors set of 6 Replaces FJ503, 12568332, 19210688, 17113295, 17114164, 17091628, 17113273, 88894353,FJ10565, 217-3028, 833-22102-6
Only compatible with Pickup 4.3L V6 Engines
Stainless steel calibration slide and spring assembly prevents corrosion within the fuel control body leading to an extended service life
Before You Buy,Please confirm OE Part Number and and Application,to make sure it's right for your car

Last update on 2025-07-10 / Affiliate links / Product Titles, Images, Descriptions from Amazon Product Advertising API

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FAQ:

Q: Should I replace the Spider injection unit?

A: Replacing the old spider injection unit isn’t cheap but it’s supposed to make it idle a ton better and get a bit more power.

Q: What kind of fuel injector does a GMC Vortec have?

A: GM has engineered a new Spider unit and it was used on 2002-2007 Vortec motors. This same unit can be installed on your 1996-2001 Vortec with no mods needed. The MFI (Multiple Flexible Injection) Spider incorporates a small electronic fuel injector at the end of the fuel line. Notice the long pintle cap tube attached to the injector.

Q: Can a MFI Spider be installed on a GM Vortec motor?

A: The two photos below show the early style spider unit installed and the new MFI spider installed on the same 4.3L Vortec intake. This is an easy conversion and does not require any special tools or modifications for installation This is a must have upgrade for any GM Vortec motor that incorporates SCPI injection.

Q: What does the poppet injector upgrade do?

A: The upgrade is that the stock poppet injectors are replaced with multec II injectors which are a better design but don’t offer much in the way of pressure or flow increase over stock. it’s just good insurance for any older Vortec truck with CSFI. Well it hits on 7 of 8… You have the 200 HP version of the 4.3.

4.3 Spider Injector Upgrade