DHD Replacement Hooker Duramax Long Block 2001-2023 6.6L

DHD's Duramax engine program is known nationally for its durability, attention to detail and quality components. Your wont find the value that this build offers anywhere else.

This is what you need for a factory-replacement.  If your truck works for a living or is the weekend getaway vehicle that takes your RV wherever you need to go and plans or jobs can't be cancelled because the truck is down, this is the solution that won't cost you and arm & a leg.

Build Highlights:

• Cleaned and Inspected OE Pistons
• New Mahle Rings
• Reconditioned Connecting Rods
• New Connecting Rod Bolts 
• New Main Cap Side Bolts
• DHD Keyed Crank
• DHD Keyed Cam
• New Clevite Bearings
• Surfaced Deck
• Hot Tanked and Magnafluxed Block
• Finish Honed Cylinders
• Includes Flywheel and Balancer
• Includes New OE Block Heater
• Upper and Lower Oil Pan Installed
• Front and Rear Cover Installed
• DHD Keyed High Pressure Oil Pump Installed
• NEW GM Water Pump (DHD High Perf. Standard on LB7/LLY) Installed
• Assembled with New Hardware
• New Oil Pressure Relief Valve
• Upgraded L5P Oil Cooler Installed
• DHD O-Ringed Rear Coolant Cover
• OE GM Front and Rear Crank Seals
• Balancer and Flywheel Installed
• GM Engine Oil Filter Included
• Reconditioned OE Cylinder Heads
• Mahle Head Gaskets
• DHD Torq Head Studs
• Assembled Valvetrain with Lash Set
• Factory Valve Covers Installed
• Warranty Statement

Note: This engine is assembled with OE engine components. It may be necessary to overbore the cylinders depending upon block inventory. 

Note: Installation of a new oil pump and oil cooler is required for warranty consideration.

Photo is representative of a Long Block and may not exactly reflect what you order based upon options chosen or inventory.