Doc's Diesel

Chevrolet/GMC 6.6L/3.0L Duramax Cabin Air Filter 2020-2025

Replaces CF185

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Sale Price $19.99

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  • Item is in stock
  • Free USA Shipping Over $99*
  • FITMENT GUARANTEED

Doc's Diesel Cabin Air Filters:

Doc’s Diesel Cabin Air Filters are built to improve the air quality inside your vehicle by removing dust, pollen, and other airborne particles. They’re one of the easiest filters to replace — typically located behind the glove box on most makes and models — and are designed for a precise fit. Installing a Doc’s Diesel Cabin Air Filter won’t affect your vehicle’s warranty, as long as it’s done according to the manufacturer’s guidelines.

Product Details:

  • Improves the air quality in your vehicle eliminating dust, pollen, gases, and other harmful bacteria
  • Easy Installation: Doc’s Diesel Cabin Air Filters fit perfectly in your vehicle’s cabin box for a quick 3-5 minute change
  • Doc's auto parts all have an OEM design, fit, and function that meet or exceed OEM Requirements

Micron + Efficiency Rating:

  • Doc's Diesel electrostatic media stops particles down to .001 Microns

Fitment, Interchange + Doc's Part Number:

Vehicle Fitment:

  • 2020-2025 Chevrolet/GMC 6.6L Duramax 2500HD, 3500HD
  • 2020-2025 Chevrolet/GMC 3.0L Duramax

Interchange:

  • Doc's D3932C: GM 13508023, AC/Delco CF185, CF1184C, Baldwin PA10369, Premium Guard PC4211C, Purolator TC3822AC

Doc's Part Number:

    D3932C

Change Interval:

Above all recommendations, change according to your vehicle’s manufacturer's warranty.

  • Cabin Air Filters: Every 15,000 miles or 12 months maximum

Breathe Better, Drive Cleaner.

Clean air isn’t just for your engine — it matters for you too. Doc's cabin air filters trap dust, pollen, and airborne junk before it hits your lungs. Swapping yours helps cut down on sneezing, stale smells, and foggy windows. They’re easy to replace, usually right behind the glove box, and built for a perfect fit every time.

Electrostatic Media

Traps Dust, Pollen, & other Airborne Particles

Stops Particles down to .001 Microns

Breathe Better, Drive Cleaner.

Clean air isn’t just for your engine — it matters for you too. Doc's cabin air filters trap dust, pollen, and airborne junk before it hits your lungs. Swapping yours helps cut down on sneezing, stale smells, and foggy windows. They’re easy to replace, usually right behind the glove box, and built for a perfect fit every time.

Electrostatic Media

Traps Dust, Pollen, & other Airborne Particles

Stops Particles down to .001 Microns

Customer Reviews

Customer Reviews

Based on 27 reviews
93%
(25)
7%
(2)
0%
(0)
0%
(0)
0%
(0)
R
Robert Holster
CAF for 2023 Chevy 2500HD

The filter seemed to be of good quality. I will likely purchase these for future replacements!

K
Kevin Fox
Quality, and perfect fit.

Seems to fit a little more snug than the OEM which means less air and particulate slipping around the filter. Will def be buying again when time for a replacement

D
Dave Silvestri
Filters

Filters are good shipping was bad when I received the box was crushed and filters were damaged

B
Brady Kile

Filter works well. Easy install.

t
thomas yeagy
New Customer

Love everything about your products, easy to order, quick turnaround and when you forgot my free T Shirt you responded quickly and sent it out right away. You have my business for sure.

B
Blackstar Motors
Cabin Air Filter

Direct replacement, premium filter, fast shipping. Will buy again.

R
Rodney Baker
Cabin Air Filter

The product seems to be quality and good price. This is first products I have purchased from Doc's. The shipping was awful. Damage outside box and inside boxes. Products did not get damaged.

B
Brandon Donley
Perfect replacement

Perfectly fits and easy to do. What else can you ask for? Better than oem and last longer than a standard replacement.

C
Charles Williams
Filters

Awesome, no issues.

M
Marlon Ybarra
Top Notch

Excellent quality. Very happy with the product.

FREQUENTLY ASKED QUESTIONS

What’s your shipping policy?

We offer free shipping over $99 on all orders within the contiguous United States. Expedited shipping is available for an additional charge. Alaska, Hawaii, and Canada will have shipping fees.

Where does Doc’s Diesel ship to?

We ship to the U.S. and Canada! For Canada orders, any taxes, duties, or customs fees are the responsibility of the buyer. We handle orders in 1-2 business days, and most of the time in less than 24 hours if ordered on a week day. Depending on location, U.S. orders will arrive between 3-5 business days from your order. Canada orders typically arrive within 7-11 days.

What is your warranty?

View our Official Limited Warranty

Doc’s Diesel Filters meet or exceed Original Equipment Manufacturer’s (OEM) requirements. New vehicle warranties stay in effect when Doc’s Diesel filters are installed correctly and in conjunction to engine manufacturer’s recommendations.

Where is my order?

If you have not received your confirmation email us sales@docsdiesel.com so we can get everything sorted out ASAP. If you received a confirmation but no shipment email, we are still working on your order. Don't hesitate to email sales@docsdiesel.com if you would like more information and we'd be happy to check on your order. Please Include your order # in the email.

For Tracking information, it will be in your shipment email. Check the tracking # first or the latest updates. Doc's Diesel, just like you are at the mercy of shipping companies after a shipment leaves our warehouse. If there's been an issue with shipment we will happily work with you to figure out where the order is and what we can do to help. You can reach out to sales@docsdiesel and include your order # in the email. Thank You!

Why didn’t I get a confirmation email?

Sometimes an email may get sent to your spam folder! So don’t forget to check that. If you need more help to hesitate to reach us at sales@docsdiesel.com.

How do I start a return?

If you are unhappy with your purchase for whatever reason, and it's within 30 days from your purchase, you can return your diesel filters back to us. Item has to be in new condition. Once filters are received, we will refund your money (minus price of return shipping) within 2-4 business days. We will refund to your original form of payment. 

To start a return, visit our Returns Center.

View Our Official Limited Warranty Policy

Thank you!

DIESEL TRUCK MAINTENANCE MADE EASY.

Doc’s Diesel is your trusted online source for premium maintenance parts built specifically for Cummins, Powerstroke, Duramax, and EcoDiesel trucks. From filters and brakes to full oil kits, we make it easy to get the right parts without the inflated prices you’ll find at dealerships or parts stores.

Whether you're a weekend wrench or a full-time heavy hauler, Doc’s helps you skip the markup, avoid the breakdowns, and keep your truck running strong—all without wasting time chasing parts.

DIESEL TRUCK MAINTENANCE MADE EASY.

Doc’s Diesel is your trusted online source for premium maintenance parts built specifically for Cummins, Powerstroke, Duramax, and EcoDiesel trucks. From filters and brakes to full oil kits, we make it easy to get the right parts without the inflated prices you’ll find at dealerships or parts stores.

Whether you're a weekend wrench or a full-time heavy hauler, Doc’s helps you skip the markup, avoid the breakdowns, and keep your truck running strong—all without wasting time chasing parts.