Pacific Performance Engineering Duramax Filter Kit — Double-Deep Transmission & 5µ Oil Filter for 2001–2019 6.6L (LB7–L5P) — High-

PPE's combo filter kit pairs a deep-capacity spin-on transmission filter with a 5-micron, high-efficiency oil filter engineered to extend service life and improve fluid cleanliness for 2001–2019 Chevy/GMC 6.6L Duramax trucks.

This package from Pacific Performance Engineering includes a double-depth spin-on transmission filter (part 128059150) and a MicroPure premium engine oil filter (part 114000550). Both items are designed as direct-fit replacements for LB7, LLY, LBZ, LMM, LML and L5P Duramax engines, offering increased media surface area and finer particle capture to help maintain cleaner oil and transmission fluid between services.

How does the PPE oil filter improve engine oil cleanliness?

The PPE Premium High-Efficiency oil filter uses accordion-folded nylon and fiberglass media to deliver far greater surface area than standard filters. That extra area traps finer particles and holds more contaminant without restricting flow, meaning oil circulates cleaner for longer.

• High-efficiency media captures particles down to 5 microns
• Approximately double the surface area of typical filters for extended life
• Perforated core and spiral-wrapped adhesive prevent bypass and media collapse
• Compatible with conventional and synthetic oils; increases oil capacity by ~1 quart

What benefits does the Double Deep spin-on transmission filter provide?

The PPE transmission filter is built with significantly more media area to improve contaminant removal while maintaining strong fluid flow. By filtering particles down to around 15 microns and offering nearly three times the media surface, it supports smoother shifts and helps preserve transmission components.

• 2.72× more filter media surface area than standard transmission spin-ons
• Fine filtration to reduce abrasive wear on clutch packs and valves
• Optimized passages for improved fluid circulation and responsiveness
• Direct-fit spin-on design for straightforward installation

Is this kit a direct replacement for my Duramax model?

Yes — both filters are engineered for direct replacement on the specified Chevy and GMC 6.6L Duramax model years. No adapter is required for the oil filter, and the transmission unit is made to match OE spin-on specifications to simplify swap-in service.

• Compatible with 2001–2019 Chevy Silverado/GMC Sierra 2500HD and 3500HD 6.6L Duramax engines
• Direct replacement construction for OEM-style fitment
• Standard 13/16-16 UNF threaded oil filter baseplate for easy installation

Who is this for? Professional technicians and DIY truck owners who run LB7, LLY, LBZ, LMM, LML or L5P Duramax engines and want upgraded filtration without modifying the vehicle will benefit most. If you prioritize longer filter life, finer particle removal, and straightforward, drop-in replacements for engine and transmission service, this PPE combo is built to deliver enhanced fluid protection and reliability between maintenance intervals.