0
No Products
DFC Diesel Remanufactured Street Series 6.6 LLY Long Block Crate Engine
PART#
SS6604505LLYLB | SKU DFCSS6604505LLYLB
Vehicle Fitment For:
2004.5-2005 GM 6.6L Duramax LLY (Manual & Automatic)
See full application list below
NOTES: $500 Crate charge is included in core charge total. Engine shipping crate must be returned with core engine to receive full core credit.
$9,414.71
Truck Freight Item(Shipping calculated at checkout)
Description
The DFC Street Series Long Block Engine is built for the diesel enthusiast who is looking to replace the tired or damaged engine in their 2004.5-2005 GM 6.6L Duramax LLY with one of the industry’s top remanufactured Long Blocks. DFC makes important improvements during the remanufacturing process to maintain reliability even with applications that have higher horsepower. DFC focuses on upgrading Duramax weak points that come from the factory such as an EDM oil pump shaft with a hardened dowel and a Woodruff Keyed camshaft installed to prevent slipping the risk of an oil pressure loss. DFC uses Rottler machining equipment that allows for tolerances that are tighter than OEM specification and checks every core before the build process. DFC choses the best cores and rejects any components that require considerable “restoring” to maintain the highest standards possible.
Engine Remanufacturing:
DFC engines are built utilizing some of the most advanced machining equipment in North America. This Rottler equipment helps ensure the engines feature tolerances that are better than OEM specifications. The DFC long block is machined with near identical weight piston and connecting rod assemblies to help you get a smoother running engine that makes less noise and is more balanced. DFC long blocks include reinforced internals with new pistons, rings, valves, springs, doweled oil pump, bearings, and rods.
Cylinder Head:
Unlike some other engine builders in the industry that re-use wearing items like valves and valves guides, DFC installs all new valves from high quality sources like MAHLE or SBI and replaces each valve guide with a new cast guide in every cylinder head. To address common cracking areas in the cylinder head, DFC also machines each head to remove the factory hardened seat material. DFC then installs new SBI valve seats to help eliminate premature cracking, giving you a more durable cylinder head.
Upgraded Fasteners:
DFC Street Series engines come standard with Head Studs to give you peace of mind that your new engine won’t fail like the stock engine due to head gasket issues. Not only does DFC use Head Studs, when assembling the bottom end of your 6.4L Powerstroke engine, they also replace the factory connecting rod bolts with upgraded fasteners to ensure that you have an engine that is more dependable than the original.
Street Series 6.6L Long Block Includes:
Complete long block with the front cover and seal, rear cover with main seal, oil pan, all new internal components, cylinder heads with all rockers and pushrods installed, doweled oil pump gear, woodruff keyed cam shaft and complete gasket kit for installation.
ISO Certified:
This engine is manufactured in an ISO 9001:2015 Certified Quality Management System facility to meet strict international quality standards, ensuring that every engine is built for reliability and long service life.
Features:
- Remanufactured Long Block Engine
- Professionally Machined Using Rottler Equipment
- Upgraded EDM Oil Pump Shaft & Hardened Dowel
- Improved Gasket Sealing Methods In Common Leak Areas
- Includes All Gaskets & Silicone To Finish Engine Installation
- All New Pistons, Rings, Bearings, Gaskets, Seals, Valves, Springs, Stem Seals And Cast Guides Standard In Every Engine
New Engine Checklist & Things You Need To Know:
- New Oil Cooler - Required For Warranty (Sold Separately)
- New Filters - Air, Oil, Fuel - Required For Warranty (Sold Separately)
- New Water Pump - Required For Warranty (Sold Separately)
- New Lubricating Oil - Required For Warranty (Sold Separately)
- Injectors - highly recommended especially on higher model engines or engines with contaminated fuel.
- Turbocharger - recommended if mileage over 125K, mandatory if shaft play, or if engine was dusted.
- Evans Waterless Coolant - recommended upgrade to prevent corrosion and boilover.
- Long Block engines typically consist of a short block with cylinder heads and are ready for the final buildup.
- This long block does not include bolt-on components such as the valve covers, intake, exhaust, fuel system, or turbo components.
- The parts above must be swapped over from your existing engine and then installed on your new DFC Long Block.
- Engine Warranty Is Void If Not Installed With The Correct Fluids as Specified By The Manufacturer.
- The specific brand of each component may change due to part availability at the time of each build.
- Parts are chosen at the discretion of DFC and cannot be specially requested.
- DFC uses only the best components sourced from multiple brands during the remanufacturing process.
Manufacturer Warranty*:
5 Year / 100,000 Miles (Standard) | 1 Year / 19,000 Miles (Commercial)
View Warranty Form
5 Year / 100,000 Miles (Standard) | 1 Year / 19,000 Miles (Commercial)
View Warranty Form
Shipping Restrictions Apply 
This product can not be shipped to these states/provinces: CA
This product can not be shipped to these states/provinces: CA
Note:
$500 Crate charge is included in core charge total. Engine shipping crate must be returned with core engine to receive full core credit.
Instructions & Tech Info
Installation Info
Reviews For DFC Diesel SS6604505LLYLB
No Reviews Yet!
Write a Review
Review this product and help other XDP customers make informed decisions!
Frequently Asked Questions
No questions about this product. Be the first to ask a question!
Ask A Question
Ask a question about this product
Please allow up to 1 business day for reply.
Specifications For DFC Diesel SS6604505LLYLB
MPN
SS6604505LLYLB
SKU
DFCSS6604505LLYLB
ID
60889
Manufacturer Name
DFC Diesel
Shipping Weight
645.00 lb.
Shipping Length
33 in.
Shipping Width
44 in.
Shipping Height
36 in.
Fuel Type
Diesel
Manufacturer Warranty*
5 Year / 100,000 Miles (Standard) | 1 Year / 19,000 Miles (Commercial)
View Warranty Form
View Warranty Form
Prop 65
WARNING: Cancer & Reproductive Harm - P65Warnings.ca.gov
WARNING: Cancer & Reproductive Harm - P65Warnings.ca.gov
Internal
L1R0
ITEM ADDED TO CART
Complete the job with these highly suggested add-on products.
Product prices marked with an * may require additonal fees, such as a core charge, which will be displayed in the cart.