
Kubota V3800 SCR Outlet Catalyst Module 2019-2022: OEM K1J303-19104
KUBOTA V3800 SCR OUTLET CATALYST MODULE 2019-2022: OEM K1J303-19104

ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY

WARRANTY
1M MILES OR 1 YEAR
PRODUCT DESCRIPTION
This is a Remanufactured Tamerx SCR Outlet Catalyst Module, Tamerx part number K1J303-19104RM-SCR ( OEM Part Number K1J303-19104 ). All parts are proudly remanufactured in the U.S.A. to the highest of OEM standards, and improvements are often applied to the original design in the remanufacturing process. This part is primarily made for a Kubota V3800, production years 2019-2022, and comes with a One Million Miles or One Year Warranty. For additional warranty info Click Here
OEM NUMBERS
| Primary OEM | K1J303-19104 |
| Additional OEM | K1J303-19102, K1J303-19104 |
ADDITIONAL DETAILS
| CONDITION | Remanufactured |
| UPC / Barcode | 00840490557208 |
| WEIGHT | 44.00 LBS |
SHIPPING OPTIONS
Ship Weight : 44.00 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.
"This Product Doesn't Have a Core"
Keep your emissions system operating with confidence using the Kubota V3800 SCR Outlet Catalyst Module 2019–2022 (OEM K1J303-19104). Designed specifically for Kubota V3800 engines, this SCR outlet catalyst module helps reduce NOx emissions while supporting efficient exhaust treatment and dependable aftertreatment performance. Manufactured to OEM specifications, it provides precise fitment and reliable compatibility across the listed model years. Installing the correct SCR outlet catalyst module helps maintain proper exhaust flow, consistent emissions compliance, and long-lasting system reliability.
FITMENT CHART
| YEAR | MAKE | ENGINE(S) | ||||
|---|---|---|---|---|---|---|
| 2019 | Kubota | V3800 | ||||
| 2020 | Kubota | V3800 | ||||
| 2021 | Kubota | V3800 | ||||
| 2022 | Kubota | V3800 | ||||
PEOPLE ALSO ASKS | BLOG(S)
The SCR catalyst and DOC catalyst are both important parts of a diesel aftertreatment system, but they perform different functions. While the Diesel Oxidation Catalyst (DOC) helps reduce certain exhaust emissions and supports DPF regeneration, the Selective Catalytic Reduction (SCR) catalyst is responsible for reducing nitrogen oxide (NOx) emissions using Diesel Exhaust Fluid (DEF). Together, these components help the engine meet modern emissions standards.
- The DOC catalyst oxidizes hydrocarbons (HC) and carbon monoxide (CO) into less harmful gases while generating heat that supports DPF regeneration.
- The SCR catalyst converts nitrogen oxide (NOx) emissions into harmless nitrogen and water vapor through a chemical reaction with Diesel Exhaust Fluid (DEF).
- The DOC operates without DEF, while the SCR catalyst depends on accurate DEF injection to function properly.
- The DOC is positioned earlier in the exhaust system, while the SCR catalyst is typically located downstream after the DEF injector.
- A failing DOC can affect DPF regeneration and increase exhaust backpressure, while a failing SCR catalyst primarily affects NOx reduction and emissions compliance.
- Both components rely on properly functioning sensors, injectors, and other aftertreatment parts to operate efficiently.
- Problems with either catalyst can trigger the check engine light, emissions-related fault codes, and in some cases, engine derate.
Although the SCR catalyst and DOC catalyst serve different purposes, they work together to reduce harmful diesel emissions. Proper maintenance of the entire aftertreatment system helps maximize the service life of both com
Yes, continuous operation under excessive load can increase exhaust temperatures and place additional stress on the SCR system. Proper engine operation helps support catalyst longevity.
Clean DEF helps ensure the correct chemical reaction occurs inside the SCR catalyst. Contaminated DEF may reduce NOx conversion efficiency and contribute to system faults.
Yes, leaking or damaged DEF hoses can reduce fluid delivery to the injector. Inadequate DEF flow can limit SCR system performance.
Running the engine at normal operating temperatures and allowing the aftertreatment system to function as designed helps the SCR catalyst achieve efficient NOx reduction.





