
Kubota V3800 DOC 2015-2021: OEM 1J508-18251
KUBOTA V3800 DOC 2015-2021: OEM 1J508-18251

ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY

WARRANTY
1M MILES OR 1 YEAR
PRODUCT DESCRIPTION
This is a Remanufactured, Tamerx DOC, Tamerx part number 115-0009RM-DOC ( OEM Part Number 1J508-18251 ).This part is primarily made for a Kubota V3800, production years 2015-2021, and comes with a One Million Miles or One Year Warranty. For additional warranty info Click Here
OEM NUMBERS
| Primary OEM | 1J508-18251 |
| Additional OEM | 1J508-18251 |
ADDITIONAL DETAILS
| CONDITION | Remanufactured |
| UPC / Barcode | 00840490557178 |
| WEIGHT | 22.00 LBS |
SHIPPING OPTIONS
Ship Weight : 22.00 LBS
UPS Ground, 2nd Day Air, Next Day Air
SHIPPING POLICY
Tamerx Diesel Products ships via UPS Ground. Next day air shipping can be arranged for a reasonable price of anywhere from $50.00 - $100.00 depending on the weight of the product and your location. We will do everything we can to make sure that you get the service you need. We understand how important it is to receive your order as quickly as possible.
In most cases Tamerx Diesel Products only needs one address, as long as your product is shipping to the same location as your billing information. In order to eliminate credit card fraud, your billing information must match the credit card you provide.
The terms, conditions, and details of our warranty vary from product to product. Specific warranty details can be found below.
Tamerx Diesel Products provides a replacement warranty on all of our parts. The duration and mileage limitations of the warranty vary by product and are specified on the product's detail page/item listing.
Please note that the warranty covers replacement of the part and the cost of shipping the replacement part to you only. It does not cover any shop, labor, towing, or any similar or related costs. This is not a "money back guarantee".
If you experience a problem with your part or it is not functioning properly, the correct warranty procedure is to call us at (510) 257-1777 (8:00 AM - 5:00 PM ET Monday through Friday). Be sure to have your order number and/or other relevant order information ready so we can easily locate your order and resolve your issue as quickly as possible. From that point, we will review with you any troubleshooting steps that may need to be taken and other areas or systems that can be checked to rule out external problems contributing to your part's issue. If a replacement is determined to be necessary, we will then arrange for your replacement part to ship out ASAP and issue any necessary return shipping labels and/or documents.
As is the case for the majority of the diesel products sold on Tamerx Diesel Products, your part's warranty is active as soon as you install it. In some other cases, warranty activation is contingent upon you sending us your core (i.e., your old part). Tamerx Diesel Products will provide you a return shipping label for parts that have a warranty with a core return condition. When we have received your core return, the part's warranty coverage begins. We reserve the right to void the product warranty if your core is not received within the allotted time, or if it isn't received at all. If the warranty for the diesel part you are purchasing has a core return requirement, it will be clearly noted on the product detail page/item listing.
What is a Core Charge?
A core charge (also called "core deposit") is similar to the deposit you might pay for a can or bottle of soda and is a standard requirement in the auto parts industry. For example, in many states, to promote recycling, you pay a deposit when you purchase a can of soda and receive your deposit back when you return the empty can. Many automotive parts have a core charge, or core price, that works in essentially the same way as a soda can deposit.
30 Day Core Charge Hold
You authorize Tamerx Diesel Products, to hold your credit card for the specified core charge amount and that you agree to return your core with 30 days of receiving the purchased part. When we have received your core return, the hold is released and the core charge payment is canceled.
The customer, or parts buyer, is responsible for any shipping costs associated with core returns unless otherwise specified in the product listing/detail page. Tamerx Diesel Products offers prepaid UPS shipping labels (SKU numbers UPS-CR1 and UPS-CR2) for use in returning your core that are available for purchase on our website during your shopping/order process.
The shipping label you will need to use for the core return is dependent upon what part you are purchasing. UPS-CR1 is good for cores weighing up to 20 pounds. UPS-CR2 is appropriate for shipping cores weighing 21 pounds or more. You must include enough information with the core return that clearly identifies it as a.) a Core Return, and b.) contains enough information we can use to clearly associate the core return with your order. Including a copy of the invoice or packing slip that came with the original shipment, clearly marked "Core Return", is ideal. Alternately, you can include a note marked as "Core Return" that includes your order number, full name and address, and phone number or other contact information. Failure to include this information with your returned core will most likely delay any due core credit being issued and/or delay any applicable warranty activation. Core returns need to be for the exact part purchased and cannot be damaged. Substituting another part in place of the part you have purchased is not acceptable.
All fluids must be drained.
If you have purchased a set or a parts package, you will need to return cores for all components of the set. For example, if you have purchaed a high pressure oil pump with an IPR valve, you will need to return both HPOP and IPR valve cores to receive proper credit. If you have purchased an EGR cooler/EGR valve package, your core return must consist of an EGR cooler core and an EGR valve core, or core credit will not be given.
Core Charges are often mandated by state legislature, and, as such, the actual core charge and taxes on the charge may vary depending on the state in which you buy your part. The Tamerx Diesel Products core charge presented to you online today with your item is representative of the most common core charge.
Keep your emissions system operating efficiently with the Kubota V3800 DOC 2015–2021 (OEM 1J508-18251). Designed specifically for Kubota V3800 engines, this diesel oxidation catalyst helps reduce harmful exhaust gases while supporting efficient aftertreatment performance. Manufactured to OEM specifications, it provides precise fitment and dependable compatibility across the listed model years. Installing the correct DOC helps maintain proper exhaust flow, reliable emissions control, and long-lasting system operation.
FITMENT CHART
| YEAR | MAKE | ENGINE(S) | ||||
|---|---|---|---|---|---|---|
| 2015 | Kubota | V3800 | ||||
| 2016 | Kubota | V3800 | ||||
| 2017 | Kubota | V3800 | ||||
| 2018 | Kubota | V3800 | ||||
| 2019 | Kubota | V3800 | ||||
| 2020 | Kubota | V3800 | ||||
| 2021 | Kubota | V3800 | ||||
PEOPLE ALSO ASKS | BLOG(S)
When replacing emissions components, choosing a direct-fit Diesel Oxidation Catalyst can make maintenance more straightforward while preserving the original exhaust system layout. The Kubota V3800 DOC 2015-2021 OEM 1J508-18251 is engineered to match factory specifications, helping ensure dependable compatibility and consistent exhaust treatment from the first stage of the aftertreatment system.
- OEM 1J508-18251 is designed for 2015-2021 Kubota V3800 engine applications, providing OEM-quality fit and reliable compatibility.
- Serves as the first catalyst in the aftertreatment system, helping condition exhaust gases before they move to downstream components.
- Designed with factory-style mounting points, allowing for straightforward installation on compatible applications.
- Constructed using durable catalyst materials built to withstand continuous exposure to high exhaust temperatures.
- Supports smooth exhaust flow, helping the emissions system function according to its original design.
- Integrates with surrounding OEM aftertreatment components, maintaining proper alignment throughout the exhaust assembly.
- Engineered for dependable long-term service, making it a reliable replacement for restoring DOC functionality.
The Kubota V3800 DOC 2015-2021 OEM 1J508-18251 is a dependable replacement for maintaining the first stage of your diesel aftertreatment system. With OEM-quality construction, direct-fit compatibility, and durable catalyst technology, it helps support reliable exhaust treatment and long-lasting emissions system operation.
A Diesel Oxidation Catalyst (DOC) is designed to provide long-lasting emissions control, but its service life depends on proper engine maintenance and the condition of the entire aftertreatment system. By reducing contamination and addressing problems early, you can help maximize DOC efficiency and avoid premature replacement.
- Follow the manufacturer's recommended maintenance schedule for the engine and aftertreatment system.
- Repair faulty fuel injectors, turbocharger issues, and combustion problems promptly to minimize excessive soot production.
- Address oil or coolant leaks immediately to prevent contamination of the DOC catalyst.
- Allow the aftertreatment system to complete regeneration cycles whenever possible to maintain proper exhaust system operation.
- Inspect exhaust pipes, clamps, and connections regularly for leaks that could affect catalyst efficiency.
- Replace malfunctioning temperature sensors, pressure sensors, or other emissions-related components that may interfere with DOC operation.
- Respond to check engine lights and emissions system warning messages promptly to prevent minor issues from causing permanent catalyst damage.
Routine maintenance and early diagnosis are the best ways to extend the life of a DOC. Keeping the engine and aftertreatment system in good condition helps maintain efficient emissions control, reduce repair costs, and maximize the service life of the entire exhaust system.
Technicians examine the DOC for physical damage, check exhaust temperature readings, inspect for leaks, and review any stored diagnostic trouble codes to evaluate its condition.
Yes, leaking gaskets can allow exhaust gases to escape before reaching the DOC. Proper sealing helps the catalyst operate as intended.
A properly functioning cooling system helps the engine maintain stable operating conditions. Consistent combustion supports cleaner exhaust entering the DOC.
Yes, restricted fuel flow can alter combustion quality and increase exhaust contaminants. Maintaining the fuel system helps protect the DOC.




