SKU: 98537488322

21212405 Genuine Mack DOC Diesel Oxidation Catalyst

$449.55 $499.50
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Description

21212405 Genuine Mack DOC Diesel Oxidation CatalystPart details DESCRIPTION DOC Diesel Oxidation Catalyst CONDITION Used BRAND Mack PART NUMBER 21212405 OTHER OEM PART NUMBERS THAT WILL WORK 207 065 0003, 207 065 0004, 2070650003, 2070650004, 21212407, 21756505, 43006029, 43006209, 82017, 82018, C0075 ID, C0075ID, C075 ID, C075ID, C097 ID, C097ID, R43006029, R43006209, 21756506 Function of this part The aftertreatment system treats exhaust gases after they leave the engine using components such as the

Part details

DESCRIPTION DOC Diesel Oxidation Catalyst
CONDITION Used
BRAND Mack
PART NUMBER 21212405
OTHER OEM PART NUMBERS THAT WILL WORK 207-065-0003, 207-065-0004, 2070650003, 2070650004, 21212407, 21756505, 43006029, 43006209, 82017, 82018, C0075-ID, C0075ID, C075-ID, C075ID, C097-ID, C097ID, R43006029, R43006209, 21756506

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

Mack is known for building tough trucks and components for construction, vocational, and highway fleets that need reliable performance day after day.

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
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
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]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 98537488322

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4.1 ★★★★★
Based on 5 reviews
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Product Reviews
D
Verified Purchase
Denise
Grantham, US
★★★★★ 5
Kid and mom and dental professional approves. P.S get the floss too.
My toddler loves this toothpaste. He gets so excited when he sees me load up his toothbrush for the evening. I like that it is fluoride free so I don’t have to worry about him eating it. Because he will, because he is 16 months old. I love that it still has the remineralizing component (anti-cavity, strong enamel) of the nano-hydroxyapatite. As a dental hygienist (and mom) this is important to me. Personally… the vanilla cardamom is not my favorite flavor. I wanted to try out the limited edition and I like cardamom (just not in toothpaste apparently) However, my son loves it! Boka has lots of different flavors I’m sure we will try over time. I’m sure I will find one I like better. P.S Boka floss is amazing. I recommend it to many of my patients, and I use it at home.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 24, 2026
M
Verified Purchase
Miss Havisham
Boise, US
★★★★★ 3
Torn About Whether to Keep Using
I bought the Vanilla Cardamon flavor, because I'm allergic to mint, and it makes my mouth swell. It tastes nice. The "flavor" doesn't last a long time, so you don't necessarily get that fresh breath feeling. The toothpaste works fine. There seems to be some controversy over whether Nano Hydroxyapatite Toothpaste really protects teeth as well as fluoride, but I know some people swear by it. Obviously, there is also lot of controversy regarding fluoride and whether it's healthy, so I get why this might be a better option for some. I've been using it for about a year, and I got a fairly bad cavity recently, but of course, this is just anecdotal evidence. I'm not sure whether I'll keep using it or not.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 13, 2025
M
Verified Purchase
Mina
Houston, US
★★★★★ 5
Great for sensitive teeth
Size: Pack of 3, 4 Ounce, Set name: E. Ela Mint, Coco Ginger, Lemon Lavender
If you have sensitive teeth, these are great. I had prescription toothpaste and couldn’t get it anymore and picked this up. It’s helped tremendously. No different than normal toothpaste consistency-wise but the flavors are the best.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 11, 2026
D
Verified Purchase
DAVID
Charlottesville, US
★★★★★ 5
Truly works and worth every penny.
Size: Pack of 3, 4 Ounce, Set name: E. Ela Mint, Coco Ginger, Lemon Lavender
This is a game changer. All other toothpastes should pack up and close shop. I don’t know what I Was using before, but it was not toothpaste. This is the only toothpaste you should be using.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 28, 2026
J
Verified Purchase
Javier Villegas
Phoenix, US
★★★★★ 5
Delicious and a great way to get vitamin C
Flavor Name: Natural Fruit, Size: 8 Ounce (1 Pack)
Love these! Super good. Wish they had a bucket of 'em to sell too, not just bags. I'd buy one in an instant
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 16, 2026

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