6.6L Duramax Transmission Filter Kit For Chevy GMC 2001 2019 Allison 1000 2000

Product Overview

The 6.6L Duramax Transmission Oil Filter Kit provides everything needed to perform a full transmission service on 2001–2019 GM trucks with the Allison transmission. It includes both the spin-on external filter and the internal sump filter, along with the required gasket. Designed for the high-torque 6.6L Duramax platform, this transmission filter kit ensures clean fluid flow and extends transmission life.

Key Features & Performance

• Complete service kit contains external spin-on filter, internal sump filter, and transmission pan gasket.
• High-efficiency cellulose/synthetic blend media traps wear particles and debris down to 25 microns.
• Spin-on filter features anti-drainback valve to prevent dry starts and ensure immediate lubrication.
• Direct replacement for factory filters—no modifications required for installation.
• Manufactured to strict OEM specifications for proper flow rate and bypass valve calibration.
• Restores shifting smoothness and protects vital transmission components under heavy towing loads.

Fitment & Compatibility

• 2001–2019 Chevrolet Silverado 2500HD / 3500HD (6.6L Duramax w/ Allison 1000/2000)
• 2001–2019 GMC Sierra 2500HD / 3500HD (6.6L Duramax w/ Allison 1000/2000)
• 2001–2019 GM 2500HD/3500HD trucks with Allison 1000/2000 automatic transmission

Common Uses

• Routine transmission fluid and filter service at recommended intervals.
• Correcting delayed or harsh shifting caused by a clogged filter.
• Preventive maintenance for trucks used in towing, plowing, or commercial applications.
• Replacing contaminated filters after transmission overheating or fluid degradation.

Technical Specifications

• Kit Components: External spin-on filter, internal sump filter, transmission pan gasket
• Engine Compatibility: 6.6L Duramax diesel (2001–2019 all variants)
• Transmission Compatibility: Allison 1000 and 2000 series 5/6-speed automatic
• Filter Type: Dual-stage (external full-flow and internal sump)

Frequently Asked Questions

Q: How often should I change the transmission filter and fluid? A: It is recommended to service the transmission every 30,000 to 50,000 miles, or every 15,000 miles under severe-duty use such as towing heavy loads.

Q: Does this kit include both the spin-on and the internal filter? A: Yes, the kit includes the external spin-on filter, the internal sump filter, and the required gasket for a complete service.

Product appearance and specifications may vary slightly by batch. Compatibility may vary by serial number. Verify fitment before purchase.