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Price: $907.50
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OEM Quality Aftermarket Part
Part Number: See Below

Zero Cost Core Deposit. Fully refundable if returned within 60 days

 x 1998-2002 5.9L Cummins Engine Control Module

We will need the following information:

Vehicle Make and Model
Valve Cover Reference Number
Transmission Type - Manual or Automatic
Federal or California Emissions

Please note, there will be programming lead time of approximately 4-5 days prior to shipping.

OEM Model
1998-1999 Dodge Ram ECM - CM551 
2000 Dodge Ram ECM - CM551A/C 
2001 Dodge Ram ECM - CM551C 
2002 Dodge Ram ECM - CM551D

Electronic items including, but not limited to relays, modules, controllers, actuators, and tuners are not eligible to be returned once they have been opened. Please verify compatibility/fitment prior to ordering. 

Item Condition:
 Manufactured Anew


For information regarding Returns or Warranty Claims, please see our Returns & Warranty policy.

For questions, concerns, or assistance with placing an order, please refer to the contact information provided at the bottom of this page. Our sales team is dedicated to helping you in any way possible. Thank you for choosing Dieselogic!
Core Policy



All cores must be in acceptable cosmetic condition, per Criteria outlined below, with original body and no external damage.  Dieselogic is not responsible for any damage caused during transit of Core Return.  Buyer is responsible for all shipping, handling, insurance, customs, duties and import fees, tariffs and taxes, and all other similar associated costs and charges.

Core Acceptability Criteria are: 

- cores must be 'like for like' (same as what was purchased)
- cores must be in original condition, and damage free
- cores must contain all internal components
- cores must be returned within 60 days of product ship-out date

The following will result in denial or partial credit of Core Charge:
- cores are not 'like for like' (not the same injector as what was purchased)
- cores are damaged (Buyer is responsible for transit damage) 
- broken/missing solenoid dividers
- broken/missing electrical connecting studs
- missing/damaged nozzles
- missing external components
- missing internal components
- core tampering or suspected disassembly/assembly
- cores are returned past 60 days of product ship-out date

How would you like to handle your Core Return?

Please choose from one of the three options outlined below.


The customer will be temporarily charged for the full Core Deposit. You will have 60 days to return old Cores from the original ship date for a full refund. Cores received after 60 days will be eligible for a partial refund. 


The customer agrees to pay the full Core charge. The customer does not have to return old Cores. You may choose to return old Cores within 60 days from the original ship date for a full refund. Cores received after 60 days will be eligible for a partial refund.


The customer may send cores in advance. Once we receive your Advance Cores we will release your Order for shipment. Please send your Advance Core to:


Cores returned after 60 days will be issued a 75% refund. Cores returned 90 days to 120 days after the original ship date will be issued a 50% refund.  Later return refund amounts vary based on wholesale market value.

Please review common Core Deposit/Charge amounts based on your Core Type in the table below. Other Core Deposit/Charge amounts may vary.


EACH (1)

SET OF (6)

SET OF (8)



















Cancellation Policy

All orders may be processed within 24 hours, and once processed the order can no longer be canceled without penalty.

  • Orders cancelled within 24 hours and prior to processing will incur a cancellation fee of 5% of the order total to cover all applicable administrative and processing costs. 
  • Orders cancelled any time after processing, but prior to shipment will incur a cancellation fee of 10% of the order total to cover all applicable administrative and processing costs
  • Orders cancelled any time after a shipping label has been created will incur a cancellation/restocking fee of 15% of the order total to cover all applicable administrative and processing costs. 
We strive to provide you with the best customer service possible, and we understand that sometimes circumstances arise that may require you to cancel your order. However, we also have costs associated with processing and handling all orders, and we ask that you understand the aforementioned cancellation policy. If you have any questions or concerns about cancelling your order, please do not hesitate to contact us. 
Warranty Policy Limited Warranty


What Does this Limited Warranty Cover?
This limited warranty (this “Limited Warranty”) covers any defects in manufacture and/or materials in injector products (collectively, the “Product” or “Products”) purchased directly from L & J Diesel Service, Inc. d/b/a, a Florida corporation (“”).

What Does this Limited Warranty Not Cover?
This Limited Warranty does not cover damage to Products caused by contaminated fuel, improper installation, or any other outside influence or third party. Disassembling or tampering with the Products voids this Limited Warranty.

What is the Limited Warranty Period of Coverage?
Effective 09/21/2022, select new & remanufactured injectors, pumps, and turbos carry a two (2) year limited warranty, balance carries a one (1) year limited warranty from the original invoice date (the “Limited Warranty Period”). All parts purchased prior to 09/21/2022 carry a one (1) year limited warranty from the original invoice date.This Limited Warranty is non-transferable and is valid only for the original purchaser of the Products. 

What Will Do to Correct The Problem?
If during the Limited Warranty Period any Product fails to function as designed (not as a result of outside damage, contamination, improper installation, or misapplication) as determined by our testing,, at its option, will repair or replace the defective or malfunctioning component of the Product at no charge. Using the instructions below, you will need to send the Products back to, at your expense, during the Limited Warranty Period for testing and warranty consideration. If our testing confirms that any Product does not exhibit any manufacturing defect within the manufacturer’s specifications we have identified, you will be assessed a fee for cleaning / testing and the Product(s) will be sent back to you at your expense. The cleaning and testing fee for non-warrantable parts shall be no less than $45 per injector or $400 per high pressure pump.

What Will Not Do?
No refunds, exchanges or returns are given on Products sent to under a warranty claim. We do not offer refunds, exchanges or returns on Products that have been installed. assumes no liability for the improper installation, improper Product selection, or misapplication of the Products. You are responsible for having your installer install the Products correctly. If in doubt, you should contact the specific Product manufacturer directly before installing the Products. Under no circumstances shall be liable for any expenses you may incur related to the Products, including, but not limited to, labor or installation charges, down time, towing, travel, lodging or other expenses incurred in diagnosis of any claimed defect (such as third party testing), removal or reinstallation of the Product, or any other contingent expenses you may incur.

How Do You Get Service?
All warranty claims are subject to prior approval by To be eligible for warranty service you must first email us at We will provide you with a Warranty Claim Request Form which must be completed and returned to us before any warranty claim will be initiated. Once we receive your completed Warranty Claim Request Form, we will provide you with a Return Merchandise Authorization (“RMA”) number and written instructions for sending the Products to us for evaluation. We do not accept Products sent to us without a completed Warranty Claim Request Form and RMA. You are responsible for all costs associated with shipping the Products to us. Depending on the results of our testing, you may need to pay for us to ship the Products back to you. shall not be responsible for any damages caused by shipping.
We do not store the Products you voluntarily send to us for testing indefinitely.  It is the original purchaser’s responsibility to communicate with us regarding the results of the testing and to pay any testing fees owed for the Products. We will hold the Products for ninety (90) calendar days from the date we receive the Products from you (the “Holding Period”) and will use commercially reasonable efforts to communicate with you (using the phone number and e-mail address you provided at the time of your purchase and/or at the time the RMA is issued regarding the Products) the testing results and if there are any fees owed.  If we do not hear from you and/or any applicable fees remain unpaid at the conclusion of the Holding Period, we will deem all of the Products you sent to us to have been intentionally abandoned by you (the “Abandoned Property”) and we reserve the right to dispose of, use, reuse and/or resell the Abandoned Property in our sole discretion.

Limitations of this Limited Warranty
The Products are provided on an “AS IS” with all faults basis and with no warranty except the Limited Warranty set forth above. To the maximum extent permissible by law, does not warrant that the Products are of merchantable quality or that they can be used for any particular purpose. These are considered implied warranties. Some states do not allow limitations on how long an implied warranty lasts, so the above limitation may not apply to you. If a limitation on implied warranties is not permitted in your state, the implied warranties shall be limited to the term of the Limited Warranty Period provided above.
This Limited Warranty sets forth your exclusive remedies with respect to the Products covered by it. No attempt to alter, modify, or amend this Limited Warranty shall be permitted. Under no circumstances shall, its directors, shareholders, officers, agents, employees, contractors, successors or assigns be liable for any injuries or damages whatsoever to any person or property arising from the installation or use of the Products, which shall include, but not be limited to, consequential, incidental, special, exemplary or punitive damages. To the maximum extent permissible by law,’s liability in all events is limited to, and shall not exceed, the purchase price paid for any Product that gives rise to any liability. Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to you.

How Does State Law Relate to this Limited Warranty?
This Limited Warranty gives you specific legal rights, and you may also have other rights which vary from state to state. By agreeing to the terms of this Limited Warranty, you, the Customer, agree that the venue for any litigation, legal action or other proceeding arising out of or relating to this Limited Warranty shall lie solely in the federal or state courts located in Duval County, Florida. You, the Customer, hereby (i) consent to personal jurisdiction and venue in such courts, (ii) agree that such courts shall have exclusive jurisdiction over any matters arising out of or related to this Limited Warranty, (iii) acknowledge and agree to accept service of process by registered or certified mail or the equivalent directed to your last known address as determined by or by whatever other means are permitted by such courts, and (iv) waive all claims to the effect that any of the aforementioned courts constitutes and inconvenient forum. 

Return Policy Return Policy


Please click here to fill & submit an RMA form.

Your satisfaction is very important to us. L & J Diesel Service, Inc. d/b/a, a Florida corporation (“”), allows customers to return new and unused products purchased from (the “Product” or “Products”), subject to the terms and conditions set forth below:

Is My Product Eligible to Return?

Customer(s) may return purchases from for any reason up to thirty (30) days from the original invoice date, provided that the Product (i) has not been installed, (ii) is in “brand-new” condition, and (iii) is returned intact in the original packaging. To be eligible for return, Products must be received at our facility within thirty (30) days of the original order date, NO EXCEPTIONS. Returned items received after thirty (30) days are not eligible and will not be considered for returns or refund(s). Products sold as a kit or part of a kit are eligible for return as a complete kit only. Partial kits or individual kit components are not eligible for return with NO EXCEPTIONS. No refund(s) shall be given on Products that have been, in’s sole discretion and determination, installed or attempted to install, tampered with, contaminated, or disassembled or attempted to disassemble. All returned products shall be subject to a restocking fee of no less than fifteen percent (15%) of the original purchase price excluding tax. Original shipping costs shall also be deducted from any refund amount.

All orders may be processed within 24 hours, and once processed, the order can no longer be canceled, and the restocking fee shall apply. The restocking fee does not apply to unused Product exchanges or unused Products returned for store credit.

How Do I Submit a Return?
To return a Product, you must first request a Return Merchandise Authorization (“RMA”) number from To obtain an RMA number, please reply to your order confirmation email or send an email to and provide the following information: original invoice number; part number; serial number (if applicable); quantity; reason for the return with as much detail as possible; and any other relevant information that will help us efficiently process the return. No Product return shall be accepted or processed without first contacting us to obtain an RMA number. Shipping costs to return Products to are the sole responsibility of the Customer.

When Will My Refund Be Processed?

All returned products must be received into our system and queued for inspection. Once we have inspected and confirmed that the returned product(s) are in original, unused, and resalable condition, your order will be scheduled for refund. This approval process may take up to 7-10 business days from the product's arrival at our facility until your refund is processed. Please note that depending on your financial institution, it may take an additional 3-5 business days for the returned funds to be reflected in your account. 

To return an item, you must first request a Return Merchandise Authorization (“RMA”) number from Dieselogic. To obtain an RMA number, please click on the link above under “RMA Form.” Once an RMA number has been issued, add your RMA number to the address below and send the Product to:     
2345 Harper St.
Jacksonville, FL 32204

Some Circumstances in which credit will NOT be issued are not limited to:
• Product is a “Special Order” item
• Product has been installed and/or used
• Product has been damaged from an attempt to be installed and/or used
• Product is shipped back without original box, manual and/or parts
• Seal on electrical parts is broken
• Product serial number does not match that which was originally shipped to buyer
• Product is deemed not resalable by Dieselogic due to customers own actions in dealing with the Product


Domestic Shipping

All orders shipped from are shipped per customer's request where applicable.  Free  ground shipping for orders over $250 is offered to contiguous USA customers only.  Due to FAA regulations flammable liquids (fuel additive) cannot be shipped via air freight; these items must be shipped via ground service.  We make every effort to ship all orders within 48 hours, excluding weekends and National Holidays, though some orders will require additional processing, production, assembly, and/or procurement time before the order is ready for shipment.

Expedited Shipping Disclosure

It is important to note that expedited shipping timeframes are estimates of time in transit only and do not include weekends or holidays. Some orders will require processing, production, assembly, and/or procurement time before the order is ready for shipment. Please contact our team to discuss if your order will be subject to these limitations. Effective March 26, 2020 and until further notice, UPS and FedEx have suspended all service guarantees for all shipments from any origin to any destination.

International Shipping

Shipping costs on orders placed outside of the Contiguous US may not have accurate shipping charges assessed at check out; in this case the shipping cost will be calculated and we will contact the customer for confirmation of this charge.  Buyer shall be responsible for all shipping, handling, insurance, customs, duties and import fees, tariffs and taxes, and all other similar costs and charges.  Dieselogic reserves the right to pass any additional shipping expenses incurred from Buyers shipping instructions to the Buyer.  All orders for customers outside of the US for injectors, turbos and pumps; must send us their cores in advance or pay for them in full.  Please contact us at 904.786.7402 or via email at for further information.

Due to logistical impacts associated with current events carriers are no longer offering any money back guarantees, this is beyond our control & therefore unfortunately shipping charges are not refundable under any circumstances.

Application List
RAM 2500 5.9L
(1998 - 2002)
RAM 2500 5.9L 4X4
(1998 - 2002)
RAM 2500 5.9L PICKUP
(1998 - 2002)
RAM 3500 5.9L
(1998 - 2002)
RAM 3500 5.9L 4X4
(1998 - 2002)
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Item Condition: Manufactured Again

-This is a Manufactured Again product

“Manufactured Again” The definition:

A properly “Manufactured Again” injector is the functional equivalent of a new part, and is virtually indistinguishable from new part performance. Manufactured Again takes products through a restorative process, using highly refined industrial procedures in a factory setting to promote greater resource productivity, and aims to reduce waste and avoid pollution. It is the only form of reuse, re-purpose, repair, or recycle that produces warranted products that meet or exceed quality and performance expectations.

Invest in a quality product instead of being misled by false representations of a “quality” Manufactured Again injector.

Every injector is completely disassembled, cleaned and 100% of all parts/components examined for wear and breakage. Worn out, missing or non-functioning components are replaced with new or manufactured again components. After full disassembly is complete, the part is reassembled and tested for compliance with OEM Bosch performance specifications with our patented Dieselogic NEO.

NEO – resolves complex “shot to shot” Multiple Injections with Dieselogic Patented Fiber optic technology. The NEO provides validity testing of Common Rail Injection internal calibration emission tolerances and stimulates the aftermarket economy while lowering emissions for a greener environment. For more info on the NEO click here.

For information regarding Returns or Warranty Claims, please see our Returns & Warranty policy.