Doc's Diesel Oil Filter 12-Pack D11878-12 – PF26 Replacement for Chevrolet/GMC 6.6L Duramax 2500HD & 3500HD (2020+)

Overview

Doc's Diesel Premium Oil Filters are built for hard‑working trucks. This 12‑pack, model D11878-12, is designed to replace PF26 and to fit a range of diesel applications, including heavy‑duty GM pickups. The set provides a convenient supply for routine maintenance without sacrificing filtration quality.

What makes Doc's Diesel filters stand out

These filters are compatible with synthetic, conventional, or blended oils, pairing a high‑flow synthetic media with a rugged metal housing for long life and reliable filtration. By capturing dirt, metal, and debris before they circulate in the engine, they help keep oil cleaner and support steady lubrication across varying conditions.

• Heavy‑duty housing supports long service life and easier handling during installation
• High‑flow media designed for efficient filtration with multiple oil types
• 25 micron at 99% efficiency rating for strong debris capture
• Interchangeable with Mopar PF26 and broadly compatible with diesel engines

Fitment and interchange

The product is listed as replacing PF26 and interchanging with components from Mopar and Wix. It is designed to work with synthetic, conventional, or blended oils and is sold as a 12‑pack for flexible maintenance planning. Always verify fitment against your vehicle’s specifications before use.

• Interchanges Mopar 8507598AA and 68498720AA; Wix WL10614 compatible
• Suitable for synthetic, conventional, or blended oils
• 12‑pack supply ideal for fleets or regular maintenance

Maintenance guidance

Adopting a regular replacement schedule can help keep oil clean and reduce wear on your engine components. Typical guidance points to changing within 5,000–7,000 miles, or up to 10,000–15,000 miles depending on driving conditions and your vehicle’s warranty terms.

Real‑world use cases

Whether you’re logging long highway miles, towing a heavy load, or navigating fluctuating temperatures, a dependable oil filter can support consistent engine lubrication. The 12‑pack offers a practical way to maintain multiple vehicles or to align changes with routine service windows.

What you get

The 12‑pack provides durable filters designed for longevity and straightforward replacement, with media tuned for broad compatibility with diesel oils.