Doc's Auto Parts

Docs Diesel Oil Filter D11878 Compatible with Chevrolet GMC 6 6L Duramax 2500HD 3500HD 2020 Replaces PF26

4.6(65)

370+ bought in the past month

$13.99

About this item

  • DOC'S DIESEL OIL FILTERS - Doc's Diesel Premium Oil Filters are built to deliver reliable performance for hard-working trucks. They filter out dirt, metal, and other debris from your oil, helping protect your engine and improve fuel efficiency. They’re made for synthetic, conventional, or blended oils, with high-flow synthetic media and a heavy-duty metal housing for longer life and better filtration. Changing your filter regularly keeps your motor running smoothly and helps prevent overheating.
  • FITMENT - Compatible with Chevrolet/GMC 6.6L Duramax 2500HD, 3500HD 2020-2025
  • INTERCHANGE - Replaces GM 12684038, Replaces AC/Delco PF26, Replaces Wix WL10454, Replaces Baldwin B7449, Replaces Premium Guard PG9952EX
  • THIRD PARTY TESTED - 25 Micron @ 99% Efficiency Rating
  • REPLACEMENT GUIDELINES - Above all recommendations, change according to your vehicle’s manufacturer's warranty. Oil Filters should be changed every 5,000-7,000 miles or 10,000-15,000 miles maximum.
$13.99

In Stock

DeliveryFriday 24 Apr – 30 Apr
Easy Returns · 30-day window
This order is a gift

In Stock

Secure Checkout
Free Returns
30-Day Guarantee
Secure checkoutAll transactions are SSL-encrypted. Your payment info is never stored.
Free returnsReturn or replace within 30 days
Fast deliveryOrders ship within 1 business day and arrive in 4–8 days.
Buyer protectionIf your order arrives damaged or doesn't show up, we'll make it right.
24/7 supportOur team is here to help. Reach us anytime by email or chat.
Ships fromOur Warehouse
Sold byDoc's Diesel
Returns
Easy Returns30-day return window
PaymentsSecure transaction

Product details

BrandDoc's Auto Parts
MaterialSynthetic, Metal
Product GradeReplacement Part
Vehicle Service TypeTruck
Thread Size17mm

From the brand

Product detailProduct detailProduct detailProduct detailProduct detailProduct detail
Product detailProduct detailProduct detailProduct detailProduct detailProduct detail

Customer reviews

4.665 ratings
★★★★★

Looks wrong but it’s right.

ckJanuary 19, 2026✓ Verified purchase

5 stars so far. I ordered this for a 24 Silverado 2500hd with the 6.6 Duramax. The filter is much fatter and a little shorter but it is the right filter for the truck. I should’ve taken a picture but I forgot. Read more

★★★★★

Good quality

CustomerDecember 2, 2025✓ Verified purchase

1st time user, I’ll let you know in 5k miles! Read more

★★★★★

Cost, better than OEM.

CustomerOctober 21, 2025✓ Verified purchase

Docs Diesel is the best!! These filters are great! Read more

★★★★★

Works great

PhilNovember 2, 2025✓ Verified purchase

Works Read more

★★★★★

Right-size

COLEENOctober 23, 2025✓ Verified purchase

😀 Read more

★★★★★

Works well on the 3500 chev

Fred WagnerJuly 11, 2025✓ Verified purchase

One of the very best filters Read more

★★★★★

cost

Kathleen A. CollinsJune 16, 2025✓ Verified purchase

great product Read more

★☆☆☆☆

Poor quality

21 SilveradoFebruary 10, 2026✓ Verified purchase

I purchased 2 of these filters for my 2021 Duramax. When I opened the first one I noticed loose wire mesh inside the filter. Very poor quality look elsewhere. Read more

Review image 1Review image 2Review image 3
Recently Viewed