SKU #: DJ-DJPLB100116 MPN #: DJPLB100116

D&J Essential long Block Engine 11-16 GM 6.6L Duramax LML

Name: D&J Essential long Block Engine 11-16 GM 6.6L Duramax LML
Brand: Engine Components
Price: 12499.99 USD
Availability: InStock

$9,499.99

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D&J Essential long Block Engine 11-16 GM 6.6L Duramax LML

Description

Bring your LML Duramax back to dependable service with the D&J Precision Machine Essential Reman Long Block, a professionally remanufactured replacement designed for everyday driving, towing, and long-term reliability. Each engine is completely disassembled, cleaned, inspected, precision-machined, and rebuilt to D&J specifications, providing a thoroughly renewed foundation for your LML without the uncertainty of an unknown used engine. The block is precision-machined for proper cylinder geometry and piston fit, while the remanufactured cylinder heads are resurfaced and fitted with recut valve seats and new valves. D&J also incorporates an upgraded L5P top-hat valve stem seal design to improve valve sealing and help address long-term durability concerns associated with the original configuration. Inside, the Essential Long Block is assembled with OEM-spec Tier 1 pistons and rings, Tier-1 head gaskets, new bearings, thrust washers, lifters, valve springs, valves, and freeze plugs. The crankshaft and camshaft are keyed for positive mechanical retention, while critical engine dimensions and clearances are verified throughout the assembly process. Once assembled, every long block is tested in-house using D&J's RMC ETS-100 engine testing equipment to verify oil pump pressure and volume, cylinder compression, and cooling system integrity before it leaves the facility. The result is a fully remanufactured LML long block built to provide a dependable replacement for a failed or worn engine and get your 2011–2016 6.6L Duramax back on the road with confidence.

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Product Price: $9,499.99
Refundable Core Deposit: + $3,000.00
Price with Core Deposit: $12,499.99

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Bring your LML Duramax back to dependable service with the D&J Precision Machine Essential Reman Long Block, a professionally remanufactured replacement designed for everyday driving, towing, and long-term reliability. Each engine is completely disassembled, cleaned, inspected, precision-machined, and rebuilt to D&J specifications, providing a thoroughly renewed foundation for your LML without the uncertainty of an unknown used engine. The block is precision-machined for proper cylinder geometry and piston fit, while the remanufactured cylinder heads are resurfaced and fitted with recut valve seats and new valves. D&J also incorporates an upgraded L5P top-hat valve stem seal design to improve valve sealing and help address long-term durability concerns associated with the original configuration.

Inside, the Essential Long Block is assembled with OEM-spec Tier 1 pistons and rings, Tier-1 head gaskets, new bearings, thrust washers, lifters, valve springs, valves, and freeze plugs. The crankshaft and camshaft are keyed for positive mechanical retention, while critical engine dimensions and clearances are verified throughout the assembly process. Once assembled, every long block is tested in-house using D&J's RMC ETS-100 engine testing equipment to verify oil pump pressure and volume, cylinder compression, and cooling system integrity before it leaves the facility. The result is a fully remanufactured LML long block built to provide a dependable replacement for a failed or worn engine and get your 2011–2016 6.6L Duramax back on the road with confidence.

Vehicle Fitment

2011-2016 GM 6.6L Duramax LML

WARNING: Cancer & Reproductive Harm - P65Warnings.ca.gov

FEATURES & BENEFITS:

Remanufactured Long Block: Fully rebuilt to D&J Precision Machine specifications for a reliable replacement engine.
Precision Machined: CNC blueprinted, bored, honed, and deck surfaced for precise cylinder geometry and proper piston fit. Each crankshaft is checked for straightness and size and repaired as needed.
New OEM-Spec Tier 1 Pistons and Rings: Provides a high-quality piston and ring package for proper fit, sealing, and consistent engine performance.
Remanufactured Cylinder Heads: Resurfaced and fitted with recut valve seats and new valves for proper sealing and reliable valve operation. The upgraded L5P top-hat valve stem seal design helps prevent valve seal failure and improve long-term durability.
Tier-1 Head Gaskets: Provides reliable cylinder sealing to help address common LML head gasket failure.
Keyed Crankshaft and Camshaft: Addresses a known failure point by providing positive mechanical retention between the shaft and gear, helping prevent unwanted movement and related component failure.
New Bearings and Thrust Washers: Restores proper internal clearances and supports reliable engine operation.
New Valves: New high-quality valves provide reliable sealing and consistent valve operation for improved long-term durability and performance.
New Valve Springs: Restores proper valvetrain operation and performance.
Precision Assembly: Critical engine dimensions and clearances are verified throughout the build for consistent quality.
In-House RMC Engine Testing System: Each engine is tested using D&J Precision Machine’s RMC ETS-100 equipment to verify oil pump pressure and volume, cylinder compression, and cooling system integrity before shipment.
Built for Everyday Use: Designed to provide reliable performance for everyday driving, and towing applications.

About D&J Precision Machine

D&J Precision Machine is the name serious diesel enthusiasts trust for premium engine components engineered to handle extreme power, boost, and stress. From street-driven trucks to record-setting race builds, D&J provides the parts and expertise to push diesel performance to its absolute limits. Founded on a commitment to excellence and innovation, D&J has established itself as a leader in the high-performance diesel engine world. Whether you're building a reliable workhorse or a full competition drag or sled pull setup, D&J components are precision-built to deliver maximum power and unmatched durability. Known for race-winning cylinder heads, intake manifolds, short blocks, long blocks, and complete custom engines, D&J brings cutting-edge engineering and craftsmanship to every component. Every product is developed, machined, and assembled in the USA at D&J’s advanced facility. With in-house CNC machining, rigorous quality control, and a team of diesel performance experts, D&J ensures every component meets the strictest standards for performance and longevity. Whether it’s a forged long block built to handle over 2,000 horsepower or a flow-optimized head for better airflow and cooling, D&J’s diesel solutions are crafted with precision and built to win. D&J PRECISION MACHINE: DIESEL PERFORMANCE WITHOUT COMPROMISE D&J Precision Machine isn’t just about horsepower, it’s about building confidence. Builders and racers around the world rely on D&J because they know each product is designed for real-world abuse and engineered to last.When it’s time to go beyond stock and into elite performance territory, D&J Precision Machine delivers the diesel power, strength, and reliability you need to dominate the street, trail, or track. FREQUENTLY ASKED QUESTIONS We get a lot of calls and e-mails each day with various product, vehicle, and installation questions. Some are completely off the wall and can even catch us off guard at times, but many others are fairly routine, so we thought we'd post some of the most popular questions regarding D&J Precision Machine that can hopefully be a good resource for you. Q: What makes D&J Precision Machine products superior to OEM components? A: D&J Precision Machine components are built for unmatched strength, precision, and performance. These parts exceed OEM standards by utilizing advanced engineering and premium-grade materials, offering superior durability and power output for high-performance and racing applications. Q: What types of products does D&J Precision Machine manufacture? A: D&J offers a comprehensive lineup of performance diesel engine components, including billet cylinder heads, intake manifolds, short blocks, long blocks, race engines, and valvetrain upgrades. Their products are designed for everything from daily-driven trucks to full-blown competition builds. Q: Are D&J Precision Machine products suitable for performance applications? A: Absolutely. D&J is known for building race-winning engines and components that handle extreme horsepower, high boost levels, and demanding conditions. Their products are trusted by top-tier racers and serious diesel enthusiasts alike. Q: Are D&J Precision Machine parts compatible with any diesel engine? A: D&J specializes in high-performance diesel platforms, particularly Cummins engines, offering solutions for 5.9L, 6.7L, and competition-only variants. Each product is engineered for a precise fit and optimal integration with performance builds. Q: Why is upgrading to D&J Precision Machine components beneficial? A: Upgrading improves engine reliability, airflow, and power potential. These components are crafted for high-stress environments and are ideal for builds where OEM parts would fail under heavy loads or prolonged abuse. The result is a more capable and longer-lasting performance engine. Q: Where are D&J Precision Machine products made? A: All products are proudly designed and manufactured in the USA, with a focus on precision machining, top-tier materials, and rigorous quality control to ensure race-ready results. Q: Can D&J Precision Machine components be installed without professional help? A: While some components may be installed by experienced enthusiasts, most products, especially complete engines and head assemblies are best installed by professionals to guarantee proper setup, fitment, and performance. Q: Do D&J Precision Machine parts come with a warranty? A: Yes, warranty coverage is available and varies by product type. Specific warranty terms are provided with each item and should be reviewed before installation. Q: What is the history of D&J Precision Machine? A: Founded by passionate diesel performance specialists, D&J Precision Machine has built a reputation for engineering excellence and racing dominance. With years of engine-building experience and a commitment to innovation, D&J remains a trusted leader in the world of high-performance diesel.