1978266 Genuine Paccar Inlet Catalyst Module
SKU: 48318305475

1978266 Genuine Paccar Inlet Catalyst Module

Sale price$681.73 Regular price$757.48
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Description

1978266 Genuine Paccar Inlet Catalyst ModulePart details DESCRIPTION Inlet Catalyst Module CONDITION Used BRAND Paccar PART NUMBER 1978266 OTHER OEM PART NUMBERS THAT WILL WORK 4353249, 1837300PE, 1837300PEX, , 1978266PE, 207 075 0029, 2070750029, 2880582, 2880582NX, 2880582RX, 4353249NX, 4353249RX, 5286910, 5286910NX, 5286910RX, 5298340, 5298340NX, 5298340RX, 58041, C0111 ID, C0111ID, C0127 ID, C0127ID, C0303 ID, C0303ID, C0C7 ID, C0C7ID Function of this part The aftertreatment system treats

Part details

DESCRIPTION Inlet Catalyst Module
CONDITION Used
BRAND Paccar
PART NUMBER 1978266
OTHER OEM PART NUMBERS THAT WILL WORK 4353249, 1837300PE, 1837300PEX, , 1978266PE, 207-075-0029, 2070750029, 2880582, 2880582NX, 2880582RX, 4353249NX, 4353249RX, 5286910, 5286910NX, 5286910RX, 5298340, 5298340NX, 5298340RX, 58041, C0111-ID, C0111ID, C0127-ID, C0127ID, C0303-ID, C0303ID, C0C7-ID, C0C7ID 

Function of this part

The aftertreatment system treats exhaust gases after they leave the engine using components such as the DOC, DPF, and SCR catalyst. It controls soot and NOx emissions by trapping particulates and converting harmful gases into less harmful compounds.

Why this part matters

These components are central to emissions compliance on modern diesel trucks. Problems in the aftertreatment system can cause frequent regens, power derates, and down-time until the fault is corrected.

About the brand

PACCAR components support both Kenworth and Peterbilt trucks with OEM-grade fit and performance.

Fitment & usage

Used OEM parts are a smart choice for controlling repair costs while still using original-equipment components. Always match the OEM part number(s) listed to your existing part, and consult your service manual, dealer, or technician if you are unsure about fitment.

Note: Because this is a used component, normal signs of wear such as scratches, discoloration, or light surface corrosion may be present. Refer to the product photos and information on Second Truck Parts for the best representation of the part you will receive.

Shipping Notes
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 48318305475

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Shawn SnoMan Thompson
Pawtucket, US
★★★★★ 5
For work or casual wear, this polo is a great choice.
Material Type: Recycled Polyester, Color: Port Stripe, Size: X-Large
I really like this polo. I've been wearing it once a week or every other week since November. Its very comfortable and breathable. This polo feels like it should last a while. The fit is good. I typcally wear XL and this XL fits great. I've pruchased it in both burgundy and black so far. I definitely recommend this shirt. For work or casual wear, this will look good.
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Reviewed in the United States on January 11, 2026
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Tech Dad
Pawtucket, US
★★★★★ 5
Great value: These are my go-to work from home shirt
Material Type: Recycled Polyester, Color: Blue, Size: X-Large
I’ve been pleasantly surprised by these shirts and wear them weekly for Zoom calls, since I’m still working from home these days. I figured at the price point it was worth trying them out, and now I’ve bought several in different colors. They aren’t super soft, but they are comfy and look nice. I’m 6’1” ~220 pounds, and the XL slim fit still has plenty of room. I imagine the regular cut is incredibly boxy and oversized. The difference between polyester vs recycled polyester is inconsequential. I typically buy expensive golf shirts, and these definitely aren’t as nice. They are a fraction of the cost though and a great “beater” work shirt / hang out shirt. It’s nice wearing something that looks and feels decent, but if something happens to it, you can toss and it and pick up another for the cost of a chipotle burrito.
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Reviewed in the United States on May 29, 2022
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Espresso
Lake Worth, US
★★★★★ 3
Great price, not great quality
Material Type: Recycled Polyester, Color: Black, Size: Small
Simple, straight forward all black polo. I am a size medium woman (with some room since I don't like form-fitting) and bought a men's small. Fits perfectly for my frame. Long enough to tuck in for my part-time extra weekend job uniform. Also suitable for the golf course. A little thin, and if you hold it up to light you can sort of see through it. *Not* flowy, soft and smooth fabric like a rash guard/sun shirt - more structured than that. But it's cool and does the job for the price under $10.
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Reviewed in the United States on August 13, 2024
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Ken Strech
Phoenix, US
★★★★★ 5
Recommend
Material Type: Recycled Polyester, Color: Dark Navy, Size: X-Large
Great fit, right price
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Reviewed in the United States on March 18, 2026
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Gwen
Carnegie, US
★★★★★ 5
Nice polo
Material Type: Recycled Polyester, Color: Dark Teal, Size: Medium
Fantastic polo shirt. Size was true to fit. Color is amazing. It’s soft and it has held up through washes since Christmas.
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Reviewed in the United States on March 14, 2026

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