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Delphi Remanufactured F2P Series Fuel Injector for Paccar MX13 Engines - EX631145 

Delphi Remanufactured F2P Series Fuel Injector for Paccar MX13 Engines - EX631145 
Price: $273.53
Part Number: EX631145
Send Core in advance.  See Core Policy for Details
You 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.  See Core Policy for details.
$225/EA CORE
Refundable Core Charge of $225.00.  See Core Policy for details
Zero Cost Core Deposit. Fully refundable if returned within 60 days


1 - Delphi Remanufactured F2P Series Fuel Injector for Paccar MX13 Engines - EX631145

1 - Return Label For Your Cores (Contiguous US Customers Only) 

O-rings as shown are preinstalled on the injectors 

Dieselogic injectors are covered under our 1 Year Unlimited Mileage Warranty
OE Part Numbers: 1925657, 1952045, 1972591, 1972591PEX
Paccar Part # 1972591PEX

Restore performance to your MX13 Diesel Engine with the Genuine OEM 2102391PRX by Delphi.

Product Attributes:

Remanufactured, Genuine OEM, There is a refundable core charge associated with this product. Core return is required for a refund.

12-Month Unlimited Mileage Warranty

New shim, spring, NRV ball, spring washer and spring retention clip

100% Inspection on body plunger assembly, stators, and OMV

Necessary Gaskets and Seals are Included New unique trim code 100% O-Ring replacement

Vehicle Linkages:

Kenworth OTR Tractors with Paccar MX13 Engine

Peterbilt OTR Tractors with Paccar MX13 Engine

About Delphi:

Delphi Technologies is excited to announce the addition of our OE F2P pump and Injector to the Remanufactured All Makes program. The F2P fuel system is fitted to the Paccar® MX series engines and represents a growing opportunity for customers like you.
Delphi diesel systems is an OEM manufacturer for many engine makers in North America and other parts of the world. Delphi can be trusted to keep your engine running strong with almost a century of excellence providing numerous customers with fuel injectors and other automotive control systems.

Delphi Technologies replaces all critical components and high wear items on its remanufactured F2P series pump with OE-validated parts. Each pump is tested on a custom OE design production test machine where all units are over-checked for leaks, injection pressure, fuel delivery and timing. Premium original equipment (OE) remanufactured pump produced under the technical expertise of one of the world’s largest OE diesel fuel injection manufacturers. We are confident that with our OE pedigree, proven quality performance and All Makes product coverage, we will be able to add value to customers and together grow our businesses.

Links to download the F2P Pump and Injector marketing notes as well as our latest All Makes brochure are included below. Please reach out to your local Delphi Technologies Central Distributor for availability and ordering information.


When replacing an injection pump, verifying the original cause of failure is very important. If the root of the problem is not resolved, repeat failures could occur. Be sure to clear the fuel system of all debris from the existing failure prior to installing the replacement pump.

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

If you have any questions or concerns, please call (888) 592-8539 and our customer satisfaction team will be happy to assist you.

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)



















Return Policy


Please click here to fill & submit an RMA form.


Your satisfaction is very important to us. You may return an item purchased from Dieselogic for any reason up to 30 days from the original invoice date provided, in our determination, that the Product is in “brand-new” condition, has not been installed, and is returned in the original packaging. No refunds will be given on Products that have been installed, tampered with, contaminated, or disassembled.

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

Shipping costs to send the returned Products to us are the responsibility of the customer. If an item was purchased with free shipping, the costs of shipping will be deducted from the refund amount. If it applies, the cost of the core shipping label will also be deducted from the refund amount.

Orders returned 30-60 days from the original invoice date will be assessed a 15% restock fee. Orders returned beyond 60 days are not returnable. 

Once we have inspected the Products and confirmed they are in new and resalable condition as required by this Policy, we will process your refund. 

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 via customer's request when applicable. Free UPS Ground shipping and core return labels are offered to contiguous USA customers only. Shipping is free on all orders over $100.00 to contiguous USA customers. Due to UPS regulations we cannot ship website orders to a PO Box.  Due to FAA regulations flammable liquids (fuel additive) cannot be shipped via air freight; these items must be shipped via UPS ground service.  We make every effort to ship all orders within 48 hours, excluding weekends and National Holidays.

Expedited Shipping Disclosure

Dieselogic does offer expedited shipping via UPS. It is important to note that the expedited shipping time refers to the time from orders leaving our facilities to the shipment destination. Some orders will require production, assembly, or procurement time before the order is ready to be shipped.  Please contact our team to discuss if your order will be subject to these limitations. Effective March 26, 2020 and until further notice, UPS has suspended the UPS Service Guarantee (also referred to as the UPS Money Back Guarantee) 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.
Dieselogic cuts out the middle man, meaning the same quality at lower prices. Found a better deal elsewhere? Give us a call at (888)598-5789 to talk about price matching.
We pride ourselves in superior craftsmanship, quality product lines, and responsive in-house customer service.
As leaders in the diesel injection system remanufacturing and refurbishing industry for over 5 decades, you can shop in confidence.

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.