13 Best Automotive Performance Fuel Injection O-Rings & Kits

List Updated January 2021

Bestselling Automotive Performance Fuel Injection O-Rings & Kits in 2021


ACDelco 217-3365 Professional Fuel Injector Fuel Feed and Return Pipe O-Ring Kit with 8 O-Rings

ACDelco 217-3365 Professional Fuel Injector Fuel Feed and Return Pipe O-Ring Kit with 8 O-Rings
BESTSELLER NO. 1 in 2021
  • Professional, premium aftermarket replacement
  • Provides the performance and dependability you expect from ACDelco
  • Manufactured to meet expectations for fit, form, and function

ACDelco 217-1588 GM Original Equipment Fuel Injector O-Ring Kit with Assorted O-Rings

ACDelco 217-1588 GM Original Equipment Fuel Injector O-Ring Kit with Assorted O-Rings
BESTSELLER NO. 2 in 2021
  • GM-recommended replacement part for your GM vehicle's original factory component
  • Offering the quality, reliability, and durability of GM OE
  • Manufactured to GM OE specification for fit, form, and function

Holley 508-19 Fuel Injection O-Ring Kit

Holley 508-19 Fuel Injection O-Ring Kit
BESTSELLER NO. 3 in 2021
  • Kit contains four small and four large O-rings to meet your needs
  • 90-day limited warranty

6.0 Blue Spring Kit Upgrade - Fuel Regulator Kit - Fits Ford Blue Spring Kit 6.0 Powerstroke F250, F350, F450, F550 2003, 2004, 2005, 2006, 2007-3C3Z-9T517-AG

6.0 Blue Spring Kit Upgrade - Fuel Regulator Kit - Fits Ford Blue Spring Kit 6.0 Powerstroke F250, F350, F450, F550 2003, 2004, 2005, 2006, 2007-3C3Z-9T517-AG
BESTSELLER NO. 4 in 2021
  • Increase fuel pressure for increased performance. This upgrade will increase the fuel pressure 10-15psi on your 6.0 powerstoke. Increases the life of fuel injectors too.
  • Easy To Install. The 6.0 blue spring kit includes all the gaskets, seals, bolts, spring, and regulator housing needed for installation. This fuel regulator kit includes a detailed installation video (link included in packaging) with step by step instructions for the blue spring upgrade.
  • Fits Ford 6.0 Powerstroke F250, F350, F450, F550 model years 2003, 2004, 2005, 2006, 2007
  • Equivalent to Ford part 3C3Z-9T517-AG Perfect for stock or modified trucks. The 6.0 Blue Spring Kit is a common upgrade because it increases injector life, increases drive-ability, and gives smoother power delivery.
  • Complete kit with everything needed for installation on your 6.0 Powerstroke: blue spring upgrade, 4 rubber o-ring seals, 3 orifice seals, 4 screws, fuel pressure regulator housing

ACDelco 217-1427 GM Original Equipment Multi-Port Fuel Injector O-Ring Kit with 16 O-Rings

ACDelco 217-1427 GM Original Equipment Multi-Port Fuel Injector O-Ring Kit with 16 O-Rings
BESTSELLER NO. 5 in 2021
  • GM-recommended replacement part for your GM vehicle's original factory component
  • Offering the quality, reliability, and durability of GM OE
  • Manufactured to GM OE specification for fit, form, and function

Dorman 904-103 Fuel Injection ORing

Dorman 904-103 Fuel Injection ORing
BESTSELLER NO. 6 in 2021
  • Dorman Diesel Fuel Rail Return Line Gaskets (904-103)

ACDelco 217-3366 Professional Fuel Injector Fuel Feed and Return Pipe O-Ring Kit with 2 O-Rings

ACDelco 217-3366 Professional Fuel Injector Fuel Feed and Return Pipe O-Ring Kit with 2 O-Rings
BESTSELLER NO. 7 in 2021
  • Professional, premium aftermarket replacement
  • Provides the performance and dependability you expect from ACDelco
  • Manufactured to meet expectations for fit, form, and function

ACDelco 217-3102 GM Original Equipment Fuel Injector O-Ring Kit with 8 Bushings and 16 O-Rings

ACDelco 217-3102 GM Original Equipment Fuel Injector O-Ring Kit with 8 Bushings and 16 O-Rings
BESTSELLER NO. 8 in 2021
  • GM-recommended replacement part for your GM vehicle's original factory component
  • Offering the quality, reliability, and durability of GM OE
  • Manufactured to GM OE specification for fit, form, and function

MAHLE Original GS33496A Fuel Injector O-Ring Kit, 1 Pack

MAHLE Original GS33496A Fuel Injector O-Ring Kit, 1 Pack
BESTSELLER NO. 9 in 2021
  • All MAHLE Original gaskets meet or exceed the original equipment specifications providing the finest sealing products available
  • MAHLE Original gaskets utilizes OE equivalent or better materials in all our gaskets
  • Cylinder head bolt set (GS) contains the head bolts necessary to replace one cylinder head. Torque-to-yield bolts cannot be reused, new fasteners ensure proper sealing load.
  • The contents of MAHLE Original gaskets are packaged in shrink wrapped tray, giving you the added security of knowing that you have the right parts, prior to opening the package

ACDelco 217-1624 GM Original Equipment Fuel Injector O-Ring Kit with Assorted O-Rings

ACDelco 217-1624 GM Original Equipment Fuel Injector O-Ring Kit with Assorted O-Rings
BESTSELLER NO. 10 in 2021
  • GM-recommended replacement part for your GM vehicle's original factory component
  • Offering the quality, reliability, and durability of GM OE
  • Manufactured to GM OE specification for fit, form, and function

ACDelco 217-3060 Professional Fuel Injection Pressure Regulator Kit with Regulator and O-Ring

ACDelco 217-3060 Professional Fuel Injection Pressure Regulator Kit with Regulator and O-Ring
BESTSELLER NO. 11 in 2021
  • Professional, premium aftermarket replacement
  • Provides the performance and dependability you expect from ACDelco
  • Manufactured to meet expectations for fit, form, and function

MAHLE Original GS33450 Fuel Injection Nozzle O-Ring Kit, 1 Pack

MAHLE Original GS33450 Fuel Injection Nozzle O-Ring Kit, 1 Pack
BESTSELLER NO. 12 in 2021
  • All MAHLE Original gaskets meet or exceed the original equipment specifications providing the finest sealing products available
  • MAHLE Original gaskets utilizes OE equivalent or better materials in all our gaskets
  • Cylinder head bolt set (GS) contains the head bolts necessary to replace one cylinder head. Torque-to-yield bolts cannot be reused, new fasteners ensure proper sealing load.
  • The contents of MAHLE Original gaskets are packaged in shrink wrapped tray, giving you the added security of knowing that you have the right parts, prior to opening the package

ACDelco 217-3414 Professional Fuel Injector Fuel Feed and Return Pipe O-Ring Kit with Seals with 2 O-Rings

ACDelco 217-3414 Professional Fuel Injector Fuel Feed and Return Pipe O-Ring Kit with Seals with 2 O-Rings
BESTSELLER NO. 13 in 2021
  • Professional, premium aftermarket replacement
  • Provides the performance and dependability you expect from ACDelco
  • Manufactured to meet expectations for fit, form, and function

Methylphenidate: The Sustained Release Generic Drug for ADHD Children

As the most widely studied childhood disorder, ADHD, when untreated, results in lack of academic performance, low self esteem and failure in various areas of life. Understanding the use of methylphenidate, in ADHD, will assist parents.

Methylphenidate is the generic form of the brand name drugs generally used to treat Attention Deficit Hyperactivity Disorder, also known as ADHD. Under the brand names of Concerta, Ritalin and Metadate-ER, these drugs are working to improve the most commonly studied childhood disorder today. Acting as a central nervous system stimulant, methylphenidate improves the regular and sustained release of dopamine, in the brain, thereby improving the symptoms so commonly associated with ADHD in children. Understanding the statistics of methylphenidate usage in children and the potential positive and negative side effects, will aide parents in addressing the needs of the ADHD child.

Studies have shown, in normal healthy adult men, the use of methylphenidate improves the release of dopamine within the brain. This increased, and consistent, release of dopamine improved the attention and focus of the test group. In the treatment of ADHD children, it is believed the methylphenidate provides this same positive outcome. Classified as a Schedule II medication, the United States Drug Enforcement Agency (DEA), requires strict guidelines in the prescribing, monitor and usage of the methylphenidate in ADHD children. Why is this? To understand, let's first look at the statistics involving the administration of methylphenidate in ADHD children.

Usage of ADHD has significantly increased over the last several years. Reports indicate children are first diagnosed with ADHD in the three to five year old range with usage of methylphenidate common in children at the 8th grade level, showing 2.4 percent usage as compared to 12th graders using the methylphenidate as often as 4.4 percent. What is the cause of this increase? The positive side effects!

As with most prescription medications, the use of methylphenidate comes with negative side effects but, first, let's examine the positive side effects. Decreasing the potential abuse of drugs and alcohol, even more so than the average adult population, improving concentration, improving academic performance, maintaining healthy weight and improving social skills, are all positive indications for continued use of methyphenidate by the ADHD child. So, what is the DEA's basis for regulation? Negative side effects.

Side effects, of course, can be negative and may include insomnia, appetite suppression, lack of affect or expression of mood, nervousness, abdominal pain, headaches and changes in blood pressure. While these side effects are not uncommon, most will dissipate as tolerance to the methylphenidate is achieved. Because the ability to improve concentration and focus is important for the ADHD child, these same side effects may be sought by individuals with a history of alcohol and drug abuse and may even include teenagers and college students who commonly avoid sleep and need extended periods of focus to complete studies. In addition to these side effects, of particular concern is the side effect involving what is known as "rebound". Rebound is the negative side effect, usually exhibited as a severely depressed mood, which occurs as the end of the sustained release cycle. For ADHD children taking methylphenidate, in sustained release, the rebound ordinarily occurs as the end of the day when the medication begins to wear off. As a parent, the key to improving the symptoms of the rebound affect involve ensuring your child is properly monitored and provided emotional and physical support. Rebound side effects normally disappear within an hour of onset.

As the parent of an ADHD child, the focus is to provide the best possible environment to ensure social, emotional, physical and academic peak performance. With the additional of methylphenidate, the outcomes of this childhood disorder are significantly improved.

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