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VORTEC CPI-CSFI Injection Unit Remanufactured CP-10721

Don't let a faulty fuel injection system ruin your ride. Introducing the VORTEC CPI-CSFI Injection Unit - the remanufactured powerhouse that will breathe new life into your vehicle.

This expertly remanufactured unit is your ticket to reliable, smooth-running power. With 20+ years of fuel injector expertise, AUS Injection has perfected the process of restoring these components to as-new condition. Get ready to experience the difference a properly functioning fuel injection system can make.

The VORTEC CPI-CSFI is designed specifically for Chevrolet and GMC V6 trucks and vans from 1992-1995. If your vehicle is struggling with misfiring, rough idling, or poor fuel economy, this is the solution you've been searching for. Upgrade your ride and take back control of the road.


Make Model Engine Year
Chevrolet Astro 6 Cyl - 4.3L 1992-95
Chevrolet Blazer 6 Cyl - 4.3L 1995
Chevrolet S10 6 Cyl - 4.3L 1994-95
Chevrolet S10 Blazer 6 Cyl - 4.3L 1992-94
GMC Jimmy 6 Cyl - 4.3L 1992-95
GMC Safari 6 Cyl - 4.3L 1992-95
GMC Sonoma 6 Cyl - 4.3L 1992-95


We include a $100 Rebate Form.

Send your used core back to us and we will issue a check.
All returns are subject to the condition of the used core. Send us an email if you have questions on this process. 

Features, Advantages & Benefits of our Vortec Spider Units

AUS Injection has developed the test equipment and processes to return each Vortec unit to the same as new or better condition and performance, lowering costs for the customer from buying new units.

AUS Injection Vortec Specialty injectors are available with:

  • New Fuel Pressure Regulator Diaphragm
  • New plastic tubes
  • New O-Rings
  • 100% Electrically tested injector valves
  • 100% Cleaned Flow matched poppet valves
  • 100% Lubricated System to assure proper functionality


Our "Vortec" Warranty

We will warrant our products for a period of ONE YEAR and Unlimited Miles. If during this period our injectors fail, we will replace them with a complete Factory Fresh SET at NO CHARGE to you. All you do is return them to us and we'll promptly ship your replacement parts… hassle-free!

But most importantly, we stand behind our products with the best Warranty Program in the High Performance Injector business. We're so confident that we supply a product you can count on to perform and to meet your expectations, we guarantee it in writing.

With 20+ years specializing in Fuel Injectors & related components, our products have gained world- wide acceptance and recognition. We have satisfied customers in the USA, South Africa, Australia, England, Germany, New Zealand and many more.

About AUS Injection

AUS Injection was founded in 1997 in Mesa, Arizona to provide stock Fuel Injector products and services for the Phoenix Metro Area auto-shops and is the first company to offer complete quality remanufactured Vortec units to the professional technician, cutting installation time in half and saving money to the customer.


For items sold in AZ, state taxes may apply.
Payment is expected within 48 hours of sale unless something else is arranged.
The buyer is fully responsible for ordering the item as Racing Injectors and Flow Rate as specified on this listing.
Please ask questions before buying.


All orders received before 12:00 PM MST [noon] will ship the same day.
Our business days are from Monday through Friday, orders received on Non-Business Day or Holiday will be processed the next available business day.

International Buyers – Please Note

Import duties, taxes, and charges are not included in the item price or shipping cost. These charges are the buyer's responsibility.
Please check with your country's customs office to determine what these additional costs will be prior buying our products.

One year warranty from date of purchase
Returns Policy

At AUS Injection, we stand behind our products with a comprehensive ONE YEAR warranty, starting from the date of purchase. If you need to return an item within the warranty period, rest assured that you can receive a full refund. In cases where the return is a result of our error (such as receiving an incorrect or defective item), we will cover the return shipping costs for your convenience.

You can expect a prompt refund within four weeks after the return process begins. However, in many cases, refunds are processed even more swiftly. This timeline factors in the transit time for your return to reach us from the shipper (5 to 10 business days), our processing time upon receipt (3 to 5 business days), and your bank's refund processing time (5 to 10 business days).

To start a return, simply log in to your account, navigate to the "My Account" menu, and select "Complete Orders" to access your order. Then, click on the "Return Item(s)" button. Once we have received and processed your returned item, we will notify you via email about your refund.


Discover the ease of global shipping – we can deliver to nearly every location in the world. Certain products may have limitations on international shipping.

International buyers should take note: Import duties, taxes, and charges are not included in the listed price or shipping cost. It is the buyer's responsibility to cover these additional charges. We recommend checking with your country's customs office prior to making a purchase.

Upon placing an order, we will provide you with estimates for shipping and delivery dates, taking into account the availability of your items and your chosen shipping options. Shipping dates may vary depending on your chosen shipping provider and will be displayed on the shipping quotes page.

Additionally, please be aware that shipping rates for many items are determined by weight. To align with the policies of the shipping companies we work with, all item weights are rounded up to the nearest pound.

Premium Quality Remanufactured Fuel Injectors: AUS Injection offers a complete line of quality remanufactured fuel injectors for both domestic and import applications. All fuel injectors are remanufactured at our Arizona facility and undergo testing and date coding before packaging, which minimizes the possibility of defects.

All remanufactured fuel injectors that we sell come with a 1-year replacement warranty from the date of installation. We date code every unit at the time of final testing just before delivery. This process ensures that the injector was flow tested on the marked date and provides AUS with a reference date for any alleged warranties.

The Remanufacturing Process: We have identified various styles of injectors that require additional steps in the remanufacturing process. For example:

  • Multec Injectors: Additional reverse flow cleaning time
  • Bosch Nozzle type: Additional ultrasonic cleaning time
  • Delphi, Nippon Denso, Bosch pencil style: Additional reverse flow cleaning time
  • TBI Injectors: Disassembled and recalibrated In cases where part numbers are known to have external leaking problems or intermittent flow due to poor original design, they are substituted with an alternate core or a new part.

  • All injectors undergo electronic testing, where coils are checked for correct electrical resistance and weakness. Good units are disassembled, and internal ultrasonic cleaning takes place in tanks specifically designed for cleaning fuel injectors. After the internal contaminants are loosened up, the injectors undergo external cleaning and back flushing to remove any remaining dirt particles. Additionally, reverse flow pressure cleaning is carried out to remove any remaining dirt particles, especially on all GM Injectors.

    Leak Test and Spray Pattern Test: Leak testing is performed by applying pressure and maintaining it for 30 seconds to ensure there are no fuel leaks. The spray pattern is then visually inspected, and two additional measuring tests are conducted to determine if any flow differences are caused by dirt blockage or defective injector components.

    Final Steps: Depending on the original manufacturer's presentation, the injectors are either painted or polished to improve their cosmetic appearance. New replaceable components such as filter baskets, pintle caps, o-rings, and seals are assembled onto the injectors. A final test is performed with all new components installed to ensure their proper positioning and functionality. The injectors are then lubricated with special oil, and protective caps are placed on both ends to extend their shelf life.

    AUS Remanufactured Fuel Injectors: We guarantee the quality and efficiency of our remanufactured fuel injectors, and we strive to ensure that they meet the highest standards for performance and reliability.

    Do you have a question about your subscription, a recent order, products, shipping or return a product? Here you can find some helpful answers to frequently asked questions (FAQ).

    • How long will it take for my order to ARRIVE?
      With Free Standard U.S. Shipping, your package is estimated to arrive within 6 business days. Please be aware that actual delivery times may vary based on the destination. When shipping internationally with USPS or UPS, please allow for a delivery window of 1 to 16 business days. Choosing the right delivery speed is crucial, and factors such as customs clearance, shipping services, and potential delivery issues can affect the speed of delivery. Once your package is in transit, AUS Injection is unable to influence the delivery process, but you can stay informed by reaching out to the shipping carrier with your tracking information for updates.
    • WHERE exactly is my Fuel Injector manufactured from?
      AUS Injection proudly produces all stock and high-performance fuel injectors in Tempe, Arizona, with the dedicated craftsmanship of our skilled workers.

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