CAT 3406E/C15 DIESEL FUEL INJECTOR #10R2781/10R8501 

CAT 3406E/C15 DIESEL FUEL INJECTOR #10R2781/10R8501 
Price: $295.00
Part Number: 10R8501
Temporary Credit Card Hold for Injector Cores
See Core Policy for details
Refundable Core Charge of $100.00
See Core Policy for details

Core Charge Option
Core Policy for Details
Ships Free. UPS Ground Shipping
Core Deposit. Fully refundable if returned within 30 days
1 - CAT 3406E/C15 Diesel Fuel Injector #10R2781/10R8501
1 - Return Label For Your Core (Contiguous US Customers Only
O-rings & copper crush washers as shown are preinstalled on injectors (color may vary)

*Only Caterpillar OEM nozzles to withstand the heavy demands of the modern-day diesel engine. All nozzles include AFM (Abrasive Flow Machining) to fillet/round the edges of the spray hole inlets. EDM (Electro Discharge Machine) precision-drilled spray holes and 100% flow tested for spray plume uniformity and flow balance.

* New Control Valves, New Control Valve Gasket, New Nozzle Springs.

Optional and Good to have: 

We strongly recommend replacing the return line seals and lower valve cover gaskets.

Replaces part numbers:

Caterpillar: 10R8501, 10R2781

REPLACES PART NUMBERS: 118-9030, 118-8010, 102-2014, 103-4562, 109-5021, 117-0482

140-8993, 191-3003, 211-3023, OR4300, OR4119, OR4894, OR4331, OR9257, 10R0957

Item Condition: Remanufactured

            -This is a Remanufactured product and not refurbished.

These are premium Remanufactured & tested/calibrated Caterpillar 3406E / C15 fuel injectors using only OEM (original equipment manufactured) Caterpillar cores.  These Caterpillar fuel injectors are the latest revision and up to date OEM specifications required by Caterpillar to replace the original generation legacy Caterpillar injector.

“Remanufactured” The definition:

A properly “remanufactured” injector is the functional equivalent of a new part and is virtually indistinguishable from new part performance. Remanufactured is not refurbished nor used. 

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

Every Caterpillar 3406E/C15 fuel 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 rebuilt components.  After full disassembly is complete, the part is reassembled and tested for compliance with OEM Caterpillar performance specifications with the Dieselogic Cambox.

Covered Under 1 Year Unlimited Mileage Warranty

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

Core Policy

To dispose of your old cores, Dieselogic has (3) convenient choices:

1.  CARD ON FILE:  The customer leaves their credit card information on file securely with Dieselogic.  Old cores must be returned to Dieselogic within 28 days of the original order ship date to avoid being charged.  If customer cores are not returned within 28 days, the credit card on file will be charged the full Core Charge (see table below) and the customer be allowed an additional 28 days to return the cores for a full refund of that core charge.  Cores returned after 60 days from the original order ship date will be issued 75% refund.  Cores returned 90 days or after, after the original order ship date will be issued a 50% refund. Customers using a debit card may see a pending transaction on your bank account until the cores are returned. 


2.  PAY CORE CHARGE:  The customer’s credit card will be charged the core charge immediately upon placing the order.  The customer’s old cores must be returned to Dieselogic within 60 days of original order ship date to be eligible for full refund.  Cores returned after 60 days will be issued 75% refund.  Cores returned 90 days or after, from the original order ship date will be issued a 50% refund.


3.  RETURN CORES IN ADVANCE:  The customer will ship their old cores to Dieselogic in advance to avoid any core charge.  Their order will ship immediately once the cores are received.


EACH (1)

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All cores must be "cosmetically" in original and acceptable condition i.e. no damage to the external body.  We will not be responsible for any damage caused in transit.  The following will result in partial core refund or denial:  Cores not being "like for like" (same as what you are purchasing), Broken/missing solenoid or dividers, Broken/missing electrical connecting studs, Core tampering or suspected disassembly, Missing/damaged nozzles, Missing internal components, Missing external components.  If you have any questions regarding this policy, please contact us at 904.786.7402 or


Full Core Policy for details.


Return Policy

New Part Return Policy

All returns for refund must new unused/unopened

There will be a 25% restocking fee on returned merchandise
The return must be within 30 days of the original invoice date
The item must be in the original packaging and the packaging must be in new unopened condition
Some items are "Special Order" and therefore are non-returnable
Customer must call for a "Return Authorization" before returning products for a refund
Dieselogic is not responsible for refund of freight charges
Dieselogic is not responsible for return freight

All parts must be in new condition; a part that has been installed in a vehicle or used in any other way cannot be returned for refund

Any orders including, but not limited to, special order items that are cancelled after the parts have been ordered or built may be subject to a 25% restocking fee


Shipping Policy

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. UPS ground is free on all orders over $100.00. 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.

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.