SKU: 70984684913

525cc (58 lbs/hr at OE 58 PSI fuel pressure) FIC Fuel Injector Clinic Injector Set for 4.8/5.3/6.0 Truck Motors ('99-'06) (High-Z) (is304-0525h)

Sale price$269.55 Regular price$299.50
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Ships within 48 hours · Estimated delivery Aug 23 - Aug 28

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Description

525cc (58 lbs/hr at OE 58 PSI fuel pressure) FIC Fuel Injector Clinic Injector Set for 4.8/5.3/6.0 Truck Motors ('99-'06) (High-Z) (is304-0525h)4. 8 5. 3 6. 0 ('99 '06) Truck Motors Fuel Injector Clinic Injector Set: 8x525cc min (50lbs hr) at 3 bar (43. 5psi) fuel pressure and 58lbs hr (600cc min) at OE 58psi (4 bar) fuel pressure. Saturated High Impedance Injectors. Includes Pigtails PGTUSC8 or add PADPUtoGM8. These injectors utilize the latest technology and provide great linearity and short pulse width repeatability. Plug and Play GM ECU Data available on our website. Fuel Injector

4.8/5.3/6.0 ('99-'06) Truck Motors Fuel Injector Clinic Injector Set: 8x525cc/min (50lbs/hr) at 3 bar (43.5psi) fuel pressure and 58lbs/hr (600cc/min) at OE 58psi (4 bar) fuel pressure. Saturated / High Impedance Injectors. Includes Pigtails PGTUSC8 or add PADPUtoGM8.These injectors utilize the latest technology and provide great linearity and short pulse width repeatability. Plug and Play GM ECU Data available on our website.

Fuel Injector Clinic's high performance fuel injector sets are precisely flow matched to within 1%. Each injector within each set is individually numbered and results for each injector are listed on a detailed flow sheet included with the set.

Fuel Injector Clinic's high performance fuel injectors are flow tested and rated at 43.5psi (3Bar) at 90 degrees F fuel temperature using CF-16B calibration fluid.

Superior short pulse width control and tight manufacturing tolerances make these injectors easy to tune and provide great drivability.

Fuel Injector Clinic injectors are set up to and include all o-rings needed to fit the factory application for the listed vehicle. For aftermarket or other unusual setups please contact us prior to placing your order to make sure you receive injectors that fit properly.

Every injector is covered against failure caused by defects in original manufacture by our lifetime warranty.

This set of injectors requires you to change the injector plug on the wiring harness in your car. This can be done by soldering in the pigtails (included with purchase) to replace the plugs currently on your harness, or you can choose to purchase the optional plug-n-play adaptors which will convert from the type of plugs on these injectors to the plugs on your harness without any need for cutting or soldering.

This plug conversion is made necessary because FIC always chooses to provide brand new, unused injectors for its performance applications. We do not believe that increasing the chance of a failure due to using remanufactured or core program based injectors is ever warranted.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 70984684913

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4.4 ★★★★★
Based on 7 reviews
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Nurse Jesica
Chelsea, US
★★★★★ 5
My Heels Were in Bad Shape. Like… Really Bad
Color: Gray
These moisturizing heel socks with the gel cushions were honestly a small miracle for me. After recovering from cancer treatments, my skin became extremely dry everywhere, but my heels were the worst. They cracked so deeply they looked like fissures and were even bleeding. I tried lotions and bandages repeatedly with very little progress. A friend suggested I treat my heel like it might have a fungal component, so I applied Lotrimin cream, put these heel socks on, and hoped for the best. Within three days, my heels were fully healed. I completed a 7-day routine, and my feet have never been softer. The silicone gel cushion is comfortable, soothing, and stays in place. I loved it so much that I still treat myself about once a week, even though I really don’t need to anymore. They are also washable. I hand-washed mine in the sink and let them air dry, and they came out looking brand new. If your heels are cracked, painful, or need serious care, I highly recommend these.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 9, 2026
B
Verified Purchase
Becky
Omaha, US
★★★★★ 5
Work well on hubby's heals
Color: Gray
Dr recommended these for hubby's dry cracked heals
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 9, 2026
M
Verified Purchase
Misha
Omaha, US
★★★★★ 3
Ehh. Not for me.
Color: Gray
Foot slides when walking in them. The fit was tighter than lead to believe. It did hold the moisture in but the silicone patch is small
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 23, 2026
J
Verified Purchase
Jackie
Boise, US
★★★★★ 5
Healed cracked feet!
Color: Gray
These moisturizing heel socks are great for dry, cracked heels. They’re soft, comfortable, and easy to wear around the house or overnight. I like that the silicone/gel part helps lock in moisture, especially when paired with foot cream or lotion. They fit well without feeling too tight, and having 4 pairs is really convenient. After using them consistently, my heels felt softer and smoother. Great little self-care item, especially if you’re on your feet a lot or struggle with dry skin.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 5, 2026
D
Verified Purchase
Darlene
Draper, US
★★★★★ 5
Great stretch.
Color: Gray
My husband has diabetes and these work great on his heels. I was worried they would be too small, he wears a size 12 shoe and they fit great!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 23, 2026

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