Shipping Policy

We offer free USPS Priority Mail shipping for injector sets, and USPS Ground Advantage for single injectors and rebuild kits, to all destinations within the United States and its territories. USPS Express (overnight to 2-day service) is also available at checkout.

For international orders, we typically ship via:

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USPS Priority Mail

Estimated delivery: 10–14 business days

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USPS First-Class Mail

Estimated delivery: 14–21 business days

If you're unsure whether cores are required for your purchase, or have questions about the return process, feel free to reach out.

Return Policy

If your item arrives damaged, please contact us immediately so we can make it right.

To qualify for a return:

  • Items must be returned in new, unused condition, in the original, unopened packaging, with no signs of installation or use.
  • Items that show signs of use may be subject to a restocking fee of up to 50%.
To qualify for a return:

Once we receive and inspect your return:

  • A full refund for the product will be issued if it meets the return criteria.
  • Shipping costs are non-refundable, unless the return is due to our error or a defective item.
  • Returns must be initiated within 30 days of delivery.
Once we receive and inspect your return:

If an item has been installed or used and is believed to be defective, it may fall under the manufacturer’s warranty. In such cases, the item must be sent to New England Injectors (NEI) for inspection. We will determine whether it qualifies for repair, replacement, or refund at the discretion of the manufacturer.

Refunds are processed to the original payment method.

Warranty & Disclaimer

New England Injectors Inc. (NEI) offers a 2-year limited warranty on all remanufactured fuel injectors from the date of purchase.

Warranty terms:

  • Faulty injectors will be tested to determine if repair is possible.
  • If repairable, the injector will be serviced and returned to you promptly.
  • If the injector cannot be repaired and a replacement is in stock, we will service it and ship it out promptly.
  • If the injector cannot be repaired and no replacement is in stock, a refund will be issued for the affected injector(s).
Warranty terms:

This warranty does not cover:

  • Labor, installation costs, or damage resulting from improper installation or handling
  • Any condition caused by neglect, misuse, or failure to follow proper installation guidelines
This warranty does not cover:

For best results and injector longevity, we strongly recommend replacing your fuel filter(s) at the time of injector installation.

Core Return Policy

Some injector sets include a core return request, and the core value is already factored into the purchase price. If cores are needed for your order, we’ll include a small card in the box with the core return value and simple return instructions.
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Core Return Guidelines

  • Cores must be returned within 90 days of receiving your order.
  • Core returns must match the part number and configuration of the injectors purchased, unless otherwise noted (such as when purchasing an upgraded set).
  • All cores should be complete, undamaged, and rebuildable (no broken connectors, large imperfections, or severe rust/corrosion).
  • Cores should be reasonably clean and packaged securely to avoid damage during shipping.

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Core Refund Process

  • Once your cores are received and inspected, the core refund amount listed on your card will be issued back to your original payment method, within 3–5 business days.
  • Cores that are not rebuildable may receive a partial refund or be rejected for return credit.

If you're unsure whether cores are required for your purchase, or have questions about the return process, feel free to reach out.

Frequently Asked Questions (FAQs)

Every injector goes through a multi-stage reconditioning process to ensure top performance and OEM-level quality:

  1. Exterior Cleaning – Injectors are stripped of all removable parts and ultrasonically cleaned to remove external dirt and fuel residue.
  2. Internal Cleaning – Injectors are pulsed during a second ultrasonic cleaning cycle to clean the pintle and internal components.
  3. Backflushing – Loose debris is flushed out of the internal channels. Steps 2 and 3 are repeated as needed until the injector is clean.
  4. Flow Bench Testing – Each injector is tested for:
    • Flow rates (static and pulsed)
    • Spray pattern
    • Leak-down
  5. Precision Matching – Injectors that pass within a 5% flow variance are then rebuilt with new O-rings, pintle caps, seals, and micro filters (where applicable).
  6. Final Preservation – Injectors are flushed with a small amount of 50:1 premixed gas to prevent corrosion and extend shelf life.

Over time injectors wear out or get clogged due to many reasons. The ethanol used in fuel today can wreak havoc on the fuel system, and if not taken care of properly can cause larger failures down the road. Having your injectors cleaned and running at peak performance will help keep your vehicle running longer, will improve your fuel economy as well as ensure that you get the maximum power out of your vehicle.

New injectors can have a variance of as much as 10% from the factory even though most manufactures say they are within 5%. Whereas re manufactured injectors from NEI are matched in to sets with the variance no higher than 2%, thus giving you maximum performance from them. Re manufactured injectors are also very cost effective compared to new injectors. The average set of 8 re manufactured injectors is around 100$ where as a new set of 8 injectors can easily run up in the 300$ range.

All injectors sold by NEI are OEM injectors from name brands like Bosch Denso Delphi and Siemens Deka. This gives the customer extra piece of mind knowing they are getting name brands as opposed to low quality knock offs like others in this market will sell you.

Privacy Policy

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At New England Injectors Inc., we take your privacy seriously. When you visit our site, we may collect basic technical data such as your IP address, browser type, referral source, and time of access. This information helps us understand how visitors use our site and allows us to improve your browsing experience.

We use cookies to remember preferences, track return visits, and serve relevant content or advertising. You can manage cookie settings through your browser at any time, though disabling them may limit some functionality. Third-party services like Google Ads may also use cookies (including the DART cookie) to show ads based on your browsing behavior. You can opt out by visiting Google’s ad settings.

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If an item has been installed or used and is believed to be defective, it may fall under the manufacturer’s warranty. In such cases, the item must be sent to New England Injectors (NEI) for inspection. We will determine whether it qualifies for repair, replacement, or refund at the discretion of the manufacturer.

Refunds are processed to the original payment method.

If you choose to register, place an order, or subscribe to any of our services, we may collect personal information such as your name, email, shipping address, and payment details. This data is used solely to process your order, deliver services, and communicate relevant offers or updates. We do not sell, rent, or share your information with third parties, except where required to fulfill your order or comply with legal obligations.

From time to time, we may send promotional emails or updates from us or trusted partners. You may unsubscribe at any time by following the link provided in those messages.

You have the right to request access to, correction of, or deletion of your personal data. Just contact us and we’ll be happy to assist.

For any privacy-related questions or to exercise your rights, please contact:

This policy is designed to comply with applicable privacy laws including CCPA and GDPR, where applicable.