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Full Set of Refurbished Injectors for 2004.5-05 LLY Chevrolet GMC Duramax 97303657, 97780144

Full Set of Refurbished Injectors for 2004.5-05 LLY Chevrolet GMC Duramax 97303657, 97780144

Regular price $645.00
Regular price $778.00 Sale price $645.00
Sale Sold out
Shipping calculated at checkout.
Quantity

Fitment 

  • 2004-2005 Chevrolet Kodiak (6.6 Duramax LLY Engines)
  • 2004-2005 Chevrolet Silverado 2500,3500 (6.6 Duramax LLY Engines)
  • 2004-2005 GMC Topkick

⚠️ Please Note:
• These are refurbished, not fully rebuilt injectors — internal components like control valves or tips are not guaranteed to be replaced
• Comes with a 90-day limited warranty
• Not ideal for commercial, towing, or high-performance applications
• Core must be returned within 60 days of delivery
• Want to avoid the core fee? You can send your cores in advance — call us at 1-800-961-9290 for assistance

Key Features:

  • Set of 8 Refurbished LLY Injectors
  • Tested for flow and response on Maktest test stand
  • Designed for 2004.5–2005 Chevy/GMC LLY 6.6L Duramax engines
  • Includes a 90-day limited warranty
  • Compatible with multiple OE part numbers (see below)
  • Core charge required up front: $800 (fully refundable)
  • Prefer to send cores in first? Call 1-800-961-9290 to make arrangements.

Shipping time may vary based on availability — please call to confirm if you’re in a rush

$800 refundable core charge is required after purchase

Looking for an affordable injector replacement for your 2004.5–2005 Chevy or GMC Duramax? This Refurbished LLY Injector Set is a budget-friendly option designed to get your 6.6L engine back on the road. These units are not fully remanufactured — they are cleaned, tested, and reused with original components where possible.

Ideal for customers in need of a temporary or lower-cost solution.

🔄 Interchangeable OEM Part Numbers:
97303657, 97780144, 0 986 435 504, 0986435504,
0 445 120 027, 0445120027
(Also searchable as: 6.6L, 6.6, 66, 66L, 66 L)

🛑 Want Real Performance + No Upfront Core Charge?

If you’re looking for long-term reliability, new internal components, and zero core deposit upfront, we strongly recommend upgrading to one of our fully remanufactured LLY injector sets. Both options are always in stock and never back-ordered for faster fulfillment.

🔗 ➡️ Standard Reman Set – 1-Year Unlimited Mileage Warranty
• Fully remanufactured with new control valves and new nozzles (as needed)
• Flow-tested and balanced for OEM performance
• Includes a 1-year unlimited mileage warranty
No upfront core charge — core return can be deferred
• Fast shipping – always in stock

🔗 ➡️ Premium Work Horse Set – 2-Year Unlimited Mileage Warranty
• Premium-level build with new control valves and tips on every injector
• Designed for heavy use, performance builds, or long-haul drivers
• Covered by our 2-year unlimited mileage warranty
No upfront core fee — core can be returned later
• Work Horse durability with peak performance
• Ships immediately — always in stock


🧰 Core Policy

This listing requires an $800 refundable core deposit before shipment.
Cores must be returned within 60 days for a full refund.

Prefer not to deal with a core fee? Choose one of our remanufactured sets above — both allow you to defer the core charge.

💬 Questions or Need Fitment Help?

If you’re unsure whether this set fits your vehicle or if you’re debating between refurbished and reman options, give us a call at 1-800-961-9290. Our diesel experts will help you make the right call for your truck, workload, and budget

 

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Frequently Asked Questions

Core Information

How Do I return my core?

Before shipping your core, please fully drain all oil, fuel, and other automotive fluids from the component and securely package the core to prevent shipping damage or leakage during transit. Be sure to include your order number or return documentation inside the package to help avoid processing delays. All cores must be returned and addressed to:

Diesel Care and Performance

3901 Thomas Street

Memphis TN 38127

When will I receive my refund?

Once your core is delivered to our facility, please allow 7 days for core check-in and inspection. If your core is approved, an additional 7-12 days are required for the refund to be processed back to your original payment method.

Where can I find the core charge amount?

Core charges are listed on the original product listing and/or during checkout prior to purchase.

How long do I have to return my core?

Most deferred cores must be returned within 35 days from the original shipment date.

Can I still return my core if I’ve already
been charged?

Deferred cores may still be returned after the core charge has been collected, but any late fees incurred are non-refundable and will be deducted from the issued refund. No core returns or credits will be accepted more than 90 days from the original order delivery date, regardless of payment status, core arrangement, or late fee collection. Contact our customer service team to see if your core still has eligibility.

Can I send my core before ordering?

Yes. Please contact customer service before shipment so we can coordinate inspection and processing.

What happens if my core is damaged?

Damaged, incomplete, modified, or non-rebuildable cores may receive reduced credit or no credit at all depending on inspection results.

Who pays for return shipping?

Customers are generally responsible for return shipping costs unless otherwise stated in writing.

For more information regarding our core policy, please click here.

Need More Help?

If you have questions regarding core returns, refunds, core pricing, or other core-related concerns, please contact our customer service team before purchasing or returning any product.

Diesel Care and Performance

3901 Thomas Street

Memphis, TN 38127

1-800-961-9290

Warranty

Diesel Care and Performance offers products with various warranty coverage. Our 3 main warranty options are Refurbished, Standard, and Premium. The warranty terms and conditions of each warranty option are the same, varying only in length of coverage. High performance products will not carry a warranty of any kind. All specific warranty coverage options are listed in the product description. For more information, please click here..

REFURBISHED

  • 90-Day Warranty Coverage

STANDARD

  • 1 Year Warranty Coverage

PREMIUM

  • 2 Year Warranty Coverage

Installation of our products constitutes your agreement with the following warranty disclaimer. Please do not install our products until you have read, understand and agree to the following warranty policy. 

WARRANTY TERMS

Diesel Care and Performance Inc. hereafter mentioned as DCP, issues the following warranty on all DCP product. This warranty is extended to the original purchaser of the product only, unless approved of in writing by DCP. Our product is warranted to be free from defects in material or workmanship under normal use and service, for a period of one year from the original purchase date. The obligation of DCP under this warranty is limited to the repair or exchange of the defective unit. Either repair of unit or replacement of the unit shall be at the sole discretion of DCP. If an exchange unit is provided, the old, defective unit must be returned within 15 days of the failure date to be considered for warranty. DCP warranty agreement is limited to one year from product purchase, unless otherwise stated at time of purchase of premium (2 year) or extended warranty terms.

WARRANTY DISCLAIMERS

This limited warranty is in lieu of all other warranties, either expressed or implied. All obligations or liabilities of DCP are expressly disclaimed, including claims for REMOVAL AND REINSTALLATION expenses, liability of consequential damages, down time, loss of revenue, or any other inconvenience cost. Our product is intended to be installed by the purchaser of DCP product. Any damage or defect caused by a third-party installer is the sole responsibility of the original purchaser of the product. In addition, DCP is not responsible for any R & R expenses, liability of consequential damages, down time, loss of revenue, or any other inconvenience cost relative to third party installers of our product. Any product that is not installed according to the manufacturer’s guidelines is not covered under any warranty by DCP. DCP assumes no liability or responsibility for pump failure that are the result of the use of fuels and/or additives not approved by the original manufacturer of the engine and/or vehicle. This warranty does not apply to any part or unit that has been altered or repaired by anyone other than DCP. Nor, to any product which has been subject to misuse, abuse, neglect, accident, improper installation, or damage from foreign material such as water or dirt. This warranty will only be honored at the facilities of DCP.

Refunds

Refund Summary:

  • Diesel Care and Performance will only refund the full product amount if product is return within 30 days of the delivery date and is uninstalled. Shipping cost will not be refunded under any circumstance.
  • If your product is already installed, or falls outside our 30-day window, Diesel Care and Performance reserves the right and discretion to impose a 20% restocking fee of the product value. If a product is returned after 90 days from the order date, Diesel Care and Performance reserves the right to impose a 40% restocking fee.
  • Diesel Care and Performance will not allow any product to be returned for credit for orders older than 6 months, regardless of circumstance. Again, no credit will be issued on any order older than 6 months.

This is a summary of our complete refund policy. For a complete copy of our Refund Policy, please click here.