Engine Upgrades
Mahle De-Lipped Cast Piston Set (MLE930036055) for 2001-2016 Duramax LB7 / LLY / LBZ / LMM / LML
$1,704.14If you’re rebuilding your 6.6L Duramax and want a piston set that blends proven reliability with performance-ready upgrades, the Mahle De-Lipped Cast Piston Set is the way to go. These aren’t your average cast pistons, they’re engineered to go the distance and built to handle the kind of abuse that comes with towing heavy, hauling hard, or chasing big power.
WAGLER CONNECTING ROD SET (WCPCRC6.6) for 2001-2016 DURAMAX LB7 / LLY / LBZ / LMM / LML
$3,200.00Enhance the performance and durability of your 2001-2016 GM 6.6L Duramax engine with the top-of-the-line Wagler WCPCRC6.6 Connecting Rod Set. Crafted with precision and excellence in mind, these connecting rods are a testament to Wagler Competition Products’ commitment to quality and innovation.
ARP Head Studs (ARP230-4201) for 2001-2016 Duramax LB7 / LLY / LBZ / LMM / LML
$837.29ARP cylinder head studs are the clear favorite among top professional engine builders in nearly every form of motor sports. ARP uses a premium grade 8740 alloy that is rated superior to aircraft quality. Then each stud is specially heat treated in a vertical fixture that insures complete heat penetration.
Fleece 1″ T4 Pedestal Spacer (FPE-T4PED-SPACER1.0) for Duramax equipped w/T4 Turbos
The Fleece 1″ T4 Pedestal Spacer (FPE-T4PED-SPACER1.0) is a high-quality component designed for Duramax engines with T4 turbochargers. It raises the turbo pedestal by one inch to allow clearance for larger or custom turbos, ensuring proper alignment and secure mounting. Ideal for performance upgrades and custom builds, it enhances compatibility and flexibility in turbo system modifications.
Fleece Multiuse Sensor Pigtail No 11 (FPE-HAR-MU-PT-11) for 2001-2016 Duramax LB7 / LLY / LBZ / LMM / LML
The Fleece Multiuse Sensor Pigtail No. 11 (FPE-HAR-MU-PT-11) is a durable, OEM-style replacement wiring solution for 2001–2016 Duramax diesel engines (LB7, LLY, LBZ, LMM, LML). Designed for easy installation and reliable sensor connections, it helps maintain proper engine management. Made from automotive-grade materials, it offers long-lasting performance in tough conditions and is ideal for replacing damaged connectors or custom wiring upgrades.
Fleece Vane Position Sensor Pigtail (FPE-HAR-DMAX-VPS-0616) for 2006-2016 Duramax LBZ / LMM / LML
The Fleece Vane Position Sensor Pigtail (FPE-HAR-DMAX-VPS-0616) is a durable, OEM-style replacement harness for 2006–2016 Duramax diesel engines (LBZ, LMM, LML). It replaces damaged turbo vane position sensor connectors, ensuring accurate vane position reporting to the engine control module. Designed for harsh engine conditions, it provides a secure connection to restore turbo function and prevent related diagnostic trouble codes. This plug-and-play repair option supports optimal engine performance.
Fleece Crankshaft Position Sensor Pigtail (FPE-HAR-DMAX-CPS-0416) for 2004.5-2016 Duramax LLY / LBZ / LMM / LML
The Fleece Crankshaft Position Sensor Pigtail (FPE-HAR-DMAX-CPS-0416) is a durable, direct-fit replacement harness for 2004.5–2016 GM Duramax diesel engines (LLY, LBZ, LMM, LML). Made with OEM-style connectors and automotive-grade wiring, it repairs damaged crankshaft position sensor connectors to restore accurate engine timing and performance, helping prevent misfires, hard starts, and error codes.
Replaces PT2547 and AC Delco 13576413
Fleece Performance Billet Oil Cap Red (FPE-DMAX-OC-RED) for 2001-2016 Duramax LB7 / LLY / LBZ
The Fleece Performance Billet Oil Cap Red (FPE-DMAX-OC-RED) is a high-quality aftermarket upgrade for 2001–2016 GM Duramax diesel engines (LB7, LLY, LBZ). Made from durable billet aluminum with a red anodized finish, it offers a secure fit, corrosion resistance, and enhanced engine bay aesthetics—combining style and function for Duramax owners.
Fleece Performance Billet Oil Cap Blue (FPE-DMAX-OC-BLU) for 2001-2016 Duramax LB7 / LLY / LBZ
The Fleece Performance Billet Oil Cap Blue (FPE-DMAX-OC-BLU) is a durable, anodized aluminum upgrade for 2001–2016 GM Duramax diesel engines (LB7, LLY, LBZ). It offers a secure, leak-free seal and enhances engine bay aesthetics with its vibrant blue finish. Designed for a precise fit, it replaces the factory cap with a corrosion-resistant, high-performance alternative ideal for diesel enthusiasts seeking improved function and style.
Fleece Performance Billet Oil Cap Black (FPE-DMAX-OC-BLK) for 2001-2016 Duramax LB7 / LLY / LBZ
The Fleece Performance Billet Oil Cap Black (FPE-DMAX-OC-BLK) is a durable, high-quality aluminum replacement for 2001–2016 GM Duramax diesel engines. It features a sleek black anodized finish for corrosion resistance and improved aesthetics. Designed for a perfect fit, it ensures a secure seal to maintain oil pressure and prevent leaks, making it ideal for both performance enthusiasts and daily drivers.
Fleece Rocker Bridges (FPE-BRAB-D1) for 2001-2016 Duramax LP7 / LLY / LBZ / LMM / LML
The Fleece Rocker Bridges (FPE-BRAB-D1) are high-strength, precision components designed for 2001–2016 GM Duramax diesel engines (LB7, LLY, LBZ, LMM, LML). They enhance valvetrain stability and durability, making them ideal for high-performance or heavy-duty applications. Built to OEM specifications, these direct-fit bridges reduce engine wear, maintain proper valve geometry, and are compatible with both factory and aftermarket rocker arms.
Sinister Diesel PITBULL SERIES® Turbocharger (SDPB66TURBO11) for 2011-2016 Duramax 6.6L LML
The Sinister Diesel PITBULL SERIES® Turbocharger is a high-performance, drop-in upgrade for 2011–2016 Chevy and GMC Duramax 6.6L trucks. It retains the factory VGT and mounting style for easy installation, improves power potential up to 650 horsepower, maintains low-end drivability, reduces peak exhaust gas temperatures (EGTs), and lowers drive pressure.
Sinister Diesel Intake Bridge & Hot Side Charge Pipe Kit (SDINTRPIPELMLHOTIE) for 2011-2016 Duramax 6.6L LML
The Sinister Diesel LML Intake Bridge and Charge Pipe Kit upgrades 2011-2016 GM 6.6L Duramax engines by improving airflow and performance. Featuring larger-diameter CNC mandrel-bent aluminum tubing, it enhances turbo spool and efficiency. The intake bridge reduces restrictions, while the charge pipe boosts air velocity and lowers EGTs.
Sinister Diesel Hot Side Charge Pipe Kit for (SDINTRPIPELMLHOT) 2011-2016 Duramax LML 6.6L
The Sinister Diesel Charge Pipe Kit for the Duramax LML 6.6L is a high-performance upgrade that replaces the restrictive factory piping, improving airflow, reducing EGTs, and enhancing engine performance. Made from durable 6061 aluminum alloy, it features smooth mandrel bends and is secured with 5-ply silicone boots and stainless steel clamps for a leak-free seal.
Sinister Diesel Heads Up Kit w/ARP Heads (SDHULML) for 2011-2015 Duramax LML
The Heads Up kits from Sinister Diesel strengthen Duramax engines (2011-2015 LML) to handle increased horsepower and torque without damage. Each kit includes an ARP Head Stud Kit (ARP2000), Grade C MLS Head Gaskets, and a complete cylinder head gasket kit. The ARP head studs provide superior clamping force (220,000 psi) for better sealing, while the multi-layered steel (MLS) head gaskets ensure durability and leak prevention.
Sinister Diesel High Amp (400A) Wiring Upgrade Kit (SDALTWIRE)
This kit includes all necessary cables to upgrade the alternator charge, alternator ground, and chassis ground. It enhances performance for both stock and high-output alternators up to 400 amps. The cables feature 5285-strand pure copper construction with a 17.2mm diameter and a hyperflex frosted jacket.
Sinister Diesel 320 Amp OEM High Output Alternator (SDALT6613320) for 2013-2017 Duramax 6.6L
The Sinister Diesel 320 amp alternator is a high-quality replacement for the OEM alternator in 2013-2018 GM Duramax 6.6L diesel engines. It prevents power issues that can lead to PDM failures by providing stronger, more reliable performance. Unlike remanufactured options, this alternator features all-new OEM components, an upgraded high-output regulator, high-temperature bearings, and a durable powder-coated aluminum chassis.
Sinister Diesel 320 Amp OEM High Output Alternator (SDALT6608320) for 2008-2012 Duramax 6.6L
The Sinister Diesel 320 Amp OEM alternator is a reliable solution for GM Duramax 6.6L alternator failures, which can cause electronics issues due to low voltage. It features brand-new OEM components, ensuring high quality and direct fitment without modifications. The product comes with a 1-year warranty.
3″ Turbo Down Pipe (GM8428), Armor Lite
The 3″ Turbo Down Pipe (GM8428) from Armor Lite is a high-performance exhaust component designed specifically for GM vehicles. Its key features include a 3″ diameter for improved exhaust flow, a durable construction for long-lasting performance, and a direct fit design for easy installation. The benefits of this down pipe include increased horsepower and torque, improved fuel efficiency, and a more aggressive exhaust sound. Its unique selling points are its compatibility with GM vehicles and its ability to enhance overall engine performance.
Fleece Turbo Compressor Discharge Adapter Kit for S400 Turbos (FPE-S4TCDA-KIT) Universal
The Fleece Turbo Compressor Discharge Adapter Kit (FPE-S4TCDA-KIT) is a durable, high-quality solution for connecting S400 turbochargers to custom intercooler piping. Made from robust, machined aluminum, it ensures optimal airflow and reliable performance under high boost. Its universal design fits a wide range of applications, making it ideal for diesel upgrades and high-performance builds.
AEM 100 PSIg Brass Sensor Kit 1/8 in. NPT Male Thread (30-2131-100)
The AEM 100 PSIg Brass Sensor Kit is a reliable and high-quality product designed for precise pressure readings. The sensor body is made of durable brass material, ensuring long-lasting use and accuracy. The 1/8 inch NPT male thread makes it easy to install in a variety of applications. This kit also includes a 100 PSIg brass sensor connector and pins, providing all the necessary components for a complete and efficient sensor setup. Whether for automotive, industrial, or other uses, this brass sensor kit is a versatile and essential tool for any pressure measurement needs.
BD Diesel Turbo Blanket – T3 S300 Wastegated (1453521) fits T3 S300 Wastegated Turbochargers
The BD Diesel Turbo Blanket – T3 S300 Wastegated (1453521) is designed for T3 S300 Wastegated Turbochargers to improve performance and thermal protection. It reduces turbo lag and under-hood temperatures by retaining heat within the turbo housing, enhancing exhaust gas velocity and efficiency. Made from durable, heat-resistant materials, it safeguards nearby components from heat damage. Ideal for performance enthusiasts, it’s a valuable upgrade for better turbo performance and engine bay safety.
BD Diesel Constant Tension Hose Clamp 2.75in High Torque (1405209) Universal
The BD Diesel Constant Tension Hose Clamp (2.75in High Torque, 1405209) is a durable, high-performance clamp designed for secure sealing in high-pressure automotive applications. It maintains consistent tension to adapt to temperature changes and hose movement, ensuring leak-free performance. Ideal for turbo systems and coolant lines, it offers strong clamping force and long-lasting reliability, making it a top choice for automotive enthusiasts and professionals.
Fleece Turbo Drain Tube Kit for S300/S400 (FPE-CTDT-KIT) Universal
The Fleece Turbo Drain Tube Kit (FPE-CTDT-KIT) is a durable, universal oil drain solution for S300 and S400 turbochargers. It features a flexible stainless steel braided hose and precision-machined fittings for a secure, leak-free connection. Designed for compatibility with various engine setups, it’s ideal for custom or performance applications, offering reliable performance and easy installation for turbo upgrades or replacements.
