2001-2019 Duramax Allison Transmission Drain Plug W/ Seal (29565364)

This is a factory replacement drain pan plug and seal for Allison 1000 Transmissions in GM Duramax Silverado or Sierra 6.6L V8 trucks.

Part Number: 29565364

• High-Quality 
• Direct Fit
• Allows Easy Access to Drain The Fluid
• Maintains Lubrication Levels
• Low Cost
• Allison Genuine Part
• Built to OEM Specs

Includes:

• Drain Plug
• Drain Seal

• This plug and seal are designed specifically to fit Allison Transmission shallow and deep pans, and may not fit other aftermarket non-Allison pans.

How It Works

The drain plug assembly is essentially a threaded bolt with a seal. It has the important job of keeping the vital lubricant in the oil pan by providing a seal between the drain plug and the drain pan.

Why It Matters

The plug is a low-cost, reliable way to access the fluid drain. A proper plug prevents issues such as contamination, leakage, and shift problems.

Signs of Needing Replacement:

• Transmission fluid leak
• Missing or damaged drain plug
• Missing or damaged drain plug seal

Causes of Failure:

• Overtightening
• Cross-threading
• Deformed washer
• Damaged gasket
• Improper installation
• Inadequate lubrication
• Improper size
• Abrasion
• Heat hardening
• Oxidation

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