BD Diesel 1061532 Allison Cooler Bypass Delete for 2017-2019 Duramax L5P

Vehicle Fitment

• 2017-2019 GM 6.6L Duramax (L5P) with Allison automatic transmission

Features

• Replaces the factory bypass valve / block to force full fluid flow through the transmission cooler
• Improves transmission temperature regulation under load
• Includes new O-rings and seals for a leak-free installation
• Machined billet design for durability
• Easy to install - direct-replacement for stock bypass block

Specifications

• Part Number: 1061532
• Material: Billet aluminum (or machined construction)
• Warranty: 12 months / 24,000 mi (or per manufacturer)
• Emissions / Legality: Legal for use in all 50 U.S. states (non-CARB restricted)

Included Components

• 1x Cooler bypass delete block
• New O-rings / seals
• Installation instructions

Product Description

The **BD Diesel 1061532** is a heavy-duty bypass-delete solution engineered for the 2017-2019 L5P Duramax with an Allison transmission. By removing the weak factory bypass valve and installing this billet unit, you ensure that all transmission fluid is forced through the cooler - promoting lower operating temperatures and reducing the risk of transmission failure under heavy duty.

Installation is direct and straightforward, using supplied seals and hardware for a clean fit. Whether you're running your truck for towing, hauling, or performance, this kit helps maintain cooler fluid and greater transmission longevity, backed by BD Diesel's trusted build quality.