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Standard Motor Products

Standard Motor Products FJ503 Fuel Injector

    • Based on 529 reviews
Condition: New
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Availability: Only 6 left in stock, order soon!
Fulfilled by Amazon
Arrives Jun 2 – Jun 8
Order within 13 hours and 18 minutes
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Features

  • 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

Description

Standard Motor Products FJ503 Fuel Injector

Material: Stainless Steel


Brand: Standard Motor Products


Item Dimensions LxWxH: 8 x 11 x 12 inches


Exterior Finish: aluminum,stainless-steel


Manufacturer: ‎Standard


Brand: ‎Standard Motor Products


Model: ‎Fuel Injector


Item Weight: ‎1 pounds


Product Dimensions: ‎8 x 11 x 12 inches


Country of Origin: ‎China


Item model number: ‎FJ503


Exterior: ‎aluminum,stainless-steel


Manufacturer Part Number: ‎FJ503


OEM Part Number: ‎FJ503


Date First Available: October 10, 2007


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Jun 2 – Jun 8

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • These work great and fit just like OEM
I just installed this on my 2001 Chevy S10 Blazer. The stock 22 year old spider injectors finally started leaking, and it was hard to start the car. So, this Standard Motor Product injectors fit just like OEM. I did not have to modify anything or come up with clever ideas to make it work. Also, the car now starts very quickly and it runs buttery smooth. Also, the car now gets much better gas mileage. While I was doing this, I also swapped out the lower intake gaskets with some metal Mahle gaskets. This whole project took me about 6 hours. Very easy, it’s just a lot of connectors to remove and a lot of stuff to move out of the way. Highly recommend these injectors! ... show more
Reviewed in the United States on July 27, 2023 by SRTRANDY
    • Works well in a 1997 Gmc Safari 4.3
Review Image by Fast Eddie Fast Eddie
Review Image by Fast Eddie Fast Eddie
Review Image by Fast Eddie Fast Eddie
Working well in a 97 safari. Install is straight forward following instructions. Be sure to lube the injector ends with engine oil or assembly lube. Also top gasket before putting upper intake cover on manifold. Be sure the unit is fully into the upper intake cover before bolting down. I had to pull mine up a little to seat it properly into upper cover(gently clamp a pair of needle nose vise grips to the plastic ring of unit and the gently pry unit up with a screwdriver to assure its up all the way in the upper cover). Follow the video standard has and you won't have problems with routing the tubes in the intake. Van started right up and runs smooth. About a 16 hour job with removing lower intake on these vans. Clean everything as you go and take your time. ... show more
Reviewed in the United States on June 11, 2023 by Fast Eddie Fast Eddie
    • Fixed my misfire
I put it on a 2001 Silverado 4.3 l. It works well. Diagnosis: I had a p0303 error code with a very noticeable miss. It felt very much like a weak spark, and was definitely running rich, so I switched wires, the plug, and then a cap and rotor swap. I had a fouled wet plug, and got a consistently strong spark. Nothing screamed fuel injection, and I never definitively nailed it down to injection, but had read the factory system does break down with time. After a compression test showed good numbers, I decided that the injection was most likely the issue, and was willing to commit the time and money to replacing it. Since I was spending the money and effort anyway, I wanted to upgrade to mpfi, and chose this system because the reviews were mostly positive. It's a big enough job, and yes the lines are stiff and tricky to route. I used the stock mounting bracket, and the job had no surprises besides one of the plastic caps came off and it was pretty tricky to reseat the injector in it. I didn't replace any gaskets and don't seen to have any air leaks. So far, I've ran about 3 tanks of gas through it and am happy. I was hoping for improved fuel mileage but didn't get it. I did get a very smooth running engine though. I even thought the engine died a few times at stops because its so smooth and quiet compared to the old system. ... show more
Reviewed in the United States on January 18, 2022 by Wakatomika Hermit
    • I did not need updated bracket for chevy 4.3 V6
Great product. Perfect replacement part! My only complaint was that the part came in, instructions stated I needed to by a updated bracket for replacement. Still driving the vehicle, I did not want to tear into it without all the parts needed. I could not find one on Amazon but found one on Summit site and placed an expedite order. 2 days rolled around and I never received my part. Summit had back order for over 3 weeks. I read on someone's review that the original bracket worked perfect on Chevy 4.3 so I took chance and tore into it. PERFECT FIT AND DID NOT NEED UPDATED BRACKET FOR 1996 Chevy S10 4.3 V6. Don't stress out...it will fit as if it were stock with no problem. Great part!!! Easy to install...I guess if you know your way around engines...AGAIN, I DID NOT NEED UPDATED BRACKET AS STATED FOR MY 1996 Chevy S10 4.3 V6. I could have saved a couple of days and the stress of tracking and eventually canceling an order for back ordered bracket. ... show more
Reviewed in the United States on September 23, 2014 by Kenny Doyle
    • Worked as intended
No concerns, worked as expected installed easily and is a quality part
Reviewed in the United States on November 18, 2023 by Matthew P.
    • Do NOT buy it perduces too low of pressure
Bought for a replacement for a 2001 S10 with the 4.3l motor. I also replaced some fuel lines, as well as the fuel filter. The truck kept stalling while driving, especially on the highway, with no warning at all. So at 65 MPH the truck shuts off. Being disabled I am limited to doing physical repairs. I also had some O2 sensor issues so I ended up storing the truck in a storage unit for about 2 years thinking the O2’s had something to do with it. So only about 100 miles on the motor after installing the spider and had to park it because of the pressure issue. At the time of installing this spider, my old fuel pressure tester showed 44-49psi output. I figured that was fine. I did not have the factory GM service manuals at that time. (got them on Ebay later) With very little income I bought fuel testers and even a fuel gauge to mount on the dash the following years. The gauge showed the same as the new fuel testers. This spider injector puts out 52psi, at BEST. The motor REQUIRES 63 PSI per the specs from GM (at the schrader valve). The only way to get up to 50psi is to turn the key 3 separate times to prime the system before starting. It will go: 1st turn 44psi, 2nd turn 47 psi, 3rd turn 50psi readings. When driving pressure increases slightly to 52psi. At 65mph and in overdrive it reads 49psi on the highway, well below the specs from GM. So the motor just shuts off when driving like you turned the key off. No sputter or any warning, just complete shut off. VERY DANGEROUS. So you have to coast to a stop on the shoulder of the highway and then restart the truck. Sometimes taking more than a half dozen tries to get it to fire up again. I then found this specific amazon part mentioned on forums and people having the same issues of stalling or even no start conditions. The pressure regulator appears to be the issues. People that replace the regulator then have pressures in the high 50 to 60 PSI range. Now that I have got GM service manuals and learned about this system (I’m used to pre 1980’s carb systems), it is too late to return it. COMPLETE WASTE OF MONEY. So I have to tear back into the motor to replace the regulator just to see if this spider will actually put out the required 63 PSI output. So new gaskets and regulator just to make this thing work. DO NOT BUY this junk spider. If you do, look up your PSI requirement and test it the moment you install this junk spider. I guarantee you it will not put out enough pressure if your system needs higher than 50psi. ... show more
Reviewed in the United States on December 23, 2022 by Amazon Customer

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