The Mercury Optimax employs a highly specialized injection system that uses both a fuel injector and an air injector, with fuel delivered through a shared rail directly into the air injector, which then injects the fuel-air mixture into the cylinder at precisely timed intervals for maximum power. For optimal performance, both injectors must operate in perfect sync, but the system can be compromised by high-ethanol fuels and debris from air pump failures. As part of our Mercury Optimax Air Fuel Injector Cleaning and Injector Services, we’ve developed custom-machined specialty cups for the Carbon Zapp and our exclusive POWERFLUSH machines to properly clean and test the Optimax air side of the injector stack.

Proprietary Mercury Optimax Fuel Injector Service Features

Proprietary Mercury Optimax Air Tool And Seals
The service we provide for E-TEC injectors follows the Port Injector service and is detailed on the Port Injector page. Additionally, you might come across Mercury Optimax air fuel injector cleaning or air injector service priced at $20, but this usually does not include O-rings and seals, which are often additional costs as purchase options. The OEM Mercury Seal Kit #26-804875 for Optimax Air injectors costs $22 on its own. As a result, shops use aftermarket combustion seals to lower the cost. Generally, they all come from the same supplier base regardless of who you buy them from. Be cautious, as often they do not serve as accurate replacements; we have discarded thousands of these seals.

Proprietary Optimax Sealing Solution
To address this quality shortcoming in the marketplace, we now produce our own proprietary combustion seals to ensure the exact quality, fit, and function of the OEM seals—as well as our own proper combustion seal sizing tool. There is a difference. By producing these components in-house, we’re able to offer comprehensive Mercury Optimax Injector Services, including full-service maintenance for the Mercury Optimax air injector. This includes traditional ultrasonic cleaning, our exclusive POWERFLUSH reverse cleaning process, and all-new parts listed below—at a price LESS than most places charge for cleaning alone.
- Correct Upper and Lower O-rings
- Correct Combustion Seal
- Combustion Seal Precision Fit with Our Proprietary Tool
- Color Injector Result Report

Send Us Your Injectors
Redline Injectors is dedicated to a precision-engineered process for port fuel injector systems (PFI) cleaning and testing. Our expertise extends to servicing Port, GDI, and Piezo fuel injectors using the latest state-of-the-art Carbon Zapp machines. Our focus is on providing one premium injector service using our engineering-based tools and processes that results in optimal outcomes.
Shipping and Service FAQs
Service Related Questions
Our standard injector service includes an additional POWERFLUSH cleaning stage for Top Feed, Side feed, E-TEC, Optimax Air, GDI and Piezo Injectors.
Yes, we have a 2 injector minimum.
Absolutely! Rest assured that we will take care of removing the injectors for you for (typically GDI and side feed) and invoice you for a bench fee of $10 per rail to do the work as problems can often arise. However, it’s important to note that we cannot be held responsible for any potential damage that may occur during the removal process. To ensure a smooth experience, we recommend that you personally remove the injectors from the rail.
To avoid any issues with shipping service secure them in plastic and tape them to prevent leaks.
For your convenience, side feed injectors will be re-installed in the fuel rails, top feed and GDI injectors will be packaged separately. GDI Injector clips are very easy, you’ll have no issues, but they are tricky to get off which we will do if you wish.
- Service prices and options are posted in store per item type as well as on the pricing page. Service Pricing
- Please check the Injector id injectors page on the menu if your unsure what you have. Injector ID
Turn around times are stated on the Home page.
Shipping Related Questions
If you would like expedited shipping contact us at [email protected] for separate invoicing for those charges. Once the items are packaged and ready to ship we will send a separate invoice for the chares based on the option you specified.
Remember to enclose a copy of the “order receipt “inside the package you are sending to us.
We accept shipments from UPS, USPS, Fedex or DHL to following address 7 days a week.
Sending UPS is the optimal choice within the US, however.
Redline Injectors
3036 HIGHWAY 35
Box #227
Hazlet, NJ 07730
Remember to enclose a copy of the “order receipt “inside the package you are sending to us.
When preparing the injectors for shipping, it is strongly advised to place them inside a regular zip lock bag first. This will help to keep the fuel smell contained. It is important to avoid any damage during transit, so make sure not to simply toss the bag into a box without any additional packing material. This is particularly crucial for the pintle end.
It is not recommended to ship the injectors in a bubble envelope. Optimal protection can be achieved by using a box with some padding or a bubble envelope in a box. The small flat rate box from the Post Office may be good budget-friendly option for smaller injectors.
We charge flat rate shipping per item type for most items where specified as ‘Free Shipping’. Other Shipping charges are listed in the store per based on quantity.
We recommend insuring the package you are sending for the exact value of the items you are shipping, so that you can easily replace them if needed in the event you need to file a claim. Adding additional insurance beyond the items value will accomplish nothing.

Service Exclusions
- We do not provide service for GM CPI/SCPI Spider injectors. In order to properly service this type of injector, it is necessary to remove and replace the fuel tubes to do it properly. However, the tubes are currently unavailable.
- We no longer provide service for FICHT injectors at this time.
Get Premium Fuel Injector Cleaning Today
We take pride in providing a premium service that goes above and beyond. As the market leader in premium injector services, we offer expert Fuel Injector Cleaning and Testing with unmatched precision and quality. Serving both the US and Canada, we ensure a rapid service turnaround so you can motor with confidence, knowing your injectors and rails are in the hands of the most advanced shop in the business.