Loading...

Paccar PX8 DOC 2011-2013

PACCAR PX8 DOC 2011-2013

Shipping ICON

ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY

WARRANTY ICON

WARRANTY
1M MILES OR 1 YEAR

$1,995.00

CORE CHARGE:

$500.00
iCORE DISCLAIMER: The CORE charge is a 30 day hold and will not be processed as long as the CORE is returned within 30 days. If you do not have a CORE or fail to return the CORE within 30 days, the CORE charge hold amount will be processed at that time.

AVAILABILITY IN STOCK
OEM NUMBER
PART TYPEDOC
BRANDSkyline
ENGINE MAKEPaccar
ENGINE TYPEPX8
YEAR2011-2013
PART NUMBERCJ0404-1-M
APPLICATION NOTESEPA10

PRODUCT DESCRIPTION

This is a New, Skyline DOC, Skyline part number CJ0404-1-M.This part is primarily made for a Paccar PX8, production years 2011-2013, and comes with a One Million Miles or One Year Warranty. For additional warranty info Click Here

OEM NUMBERS

Additional OEM2871468, 2871468NX, 2880512, 2880512NX, 2880512RX, A029W349, Q629359

ADDITIONAL DETAILS

CONDITIONNew
UPC / Barcode00840490544284
WEIGHT38.60 LBS

SHIPPING OPTIONS

Ship Weight : 38.60 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.


Built to support exhaust emissions treatment, the Diesel Oxidation Catalyst (DOC) for Paccar PX8 engines is designed for model years 2011 through 2013. This unit assists in processing exhaust gases by enabling oxidation reactions that reduce regulated compounds before gases continue through the aftertreatment system. Its emissions-rated design ensures proper installation, balanced exhaust flow, and durability in high-temperature operating environments. When symptoms such as restricted exhaust flow, increased soot presence, or aftertreatment warning indicators appear, replacing the DOC can help restore correct exhaust handling. Constructed with dependable materials and precise engineering, it provides reliable emissions control for compatible PX8 applications within this production range.

FITMENT CHART

YEARMAKEENGINE(S)
2011Paccar PX8
2012Paccar PX8
2013Paccar PX8

PEOPLE ALSO ASKS | BLOG(S)

The Diesel Oxidation Catalyst (DOC) is designed to last a long time, but it will eventually reach a point where replacement is necessary. Unlike routine maintenance parts, a DOC is replaced based on condition and efficiency, not a fixed mileage interval. Knowing when replacement is required helps prevent further damage to the emissions system.

A DOC should be replaced when it can no longer oxidize exhaust gases effectively or support proper DPF operation. Cleaning may help in early stages, but it will not restore a catalyst that has lost functionality or suffered internal damage.

You should replace your DOC when:

  • Regeneration cycles become frequent or fail to complete
  • Catalyst-related fault codes keep returning
  • Exhaust temperature readings show little or no change between inlet and outlet
  • Strong or unusual exhaust odors persist
  • Soot buildup increases, leading to DPF issues
  • Cracks, melting, or internal damage are found during inspection
  • No improvement occurs after professional cleaning

Driving with a worn DOC can accelerate DPF clogging and increase the risk of derate. Replacing the DOC at the right time restores proper exhaust treatment and helps protect downstream components.

Regular diagnostics and early attention to warning signs ensure replacement happens only when truly necessary.

Downstream components may experience irregular temperature behavior or frequent regen requests.

Proper oxidation reduces the amount of untreated exhaust reaching the particulate filter.

Extended low-load or cold-start operation can delay catalyst light-off.

Restricted flow can increase exhaust backpressure and reduce overall system efficiency.

Paccar DOCs

PRODUCT VIDEOS