
ENGINE PARTS / ACCESSORIES
Engine Parts/Accessories
Cpp Diesel has all of the engine parts you need for your Duramax v8.
Upgrade and maintain your engine with our wide selection of engine parts and accessories. Whether you need a new cylinder head gasket set, piston kit, valve cover gasket set, or a billet oil cap, we have everything you need to keep your engine running smoothly.
Our collection includes top-quality products from trusted brands like MAHLE and FLEECE, designed specifically for GM 6.6L Duramax engines. From resonator delete plates to high-flow intake horns, we have the parts you need to enhance the performance of your vehicle.
If you're looking to replace or upgrade your cylinder heads, we offer both remanufactured and freedom series cylinder heads for various models of the Duramax engine. Rest assured that you are getting a high-quality product that will meet your engine needs.
We also provide piston kits in different sizes to accommodate your engine's requirements. Whether you need a standard size or an overbore option, we have the right piston kit for your vehicle.
Shop our selection of engine parts and accessories to find everything you need to keep your engine in peak condition. With our durable and reliable products, you can trust that your engine will continue to perform at its best for years to come.
Whether you're in need of vital replacements like cylinder head gaskets, valve cover gaskets, or piston kits, or looking to optimize your engine's capabilities with performance-enhancing accessories such as high-flow intake horns and resonator delete plates, we offer a comprehensive range to meet all your engine needs. Our remanufactured and freedom series cylinder heads are engineered for durability, ensuring top-notch performance whether you are restoring an engine or pushing boundaries on the road or track.
Finding the right fit for your engine is seamless with our various piston kits available in multiple sizes to accommodate both standard and overbore options. Each product is designed to ensure that your engine maintains its peak performance, allowing you to enjoy driving with confidence.
Investing in quality engine parts and accessories not only helps prevent costly repairs down the road but also assures that your vehicle operates efficiently and reliably. Browse our selection at Cpp Diesel to discover the exceptional engine parts and accessories that promise to keep your Duramax engine running at its best for years to come. With our commitment to quality and customer satisfaction, your engine will be in excellent hands.
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CAMSHAFTS
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CONNECTING RODS
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CRATE ENGINES
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CYLINDER HEADS
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EXHAUST MANIFOLDS
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EXTERNAL ENGINE COMPONENTS
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GASKETS & SEALS
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GIRDLE
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GLOW PLUGS
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HARMONIC DAMPER
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MAIN BEARINGS
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OIL PUMP
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PISTONS / RINGS
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PUSHRODS
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REBUILD KITS
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ROCKER ARMS
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ROD BEARINGS
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STUDS / BOLTS
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VALVE SPRINGS / RETAINERS
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ATS 204-900-4248 PULSE FLOW EXHAUST MANIFOLD KIT FITS 2001-2004 6.6L DURAMAX
ATS DIESEL
$1,053.88ATS Pulse Flow Exhaust Manifolds for the 2001 to 2004 6.6L Duramax offer far less restriction than stock manifolds and up-pipes. Channel areas were increased dramatically resulting in a 26 percent increase in airflow. Not only will the Pulse Flow...$1,053.88 -
FLEECE FPE-61-10001-D-CL FREEDOM SERIES DURAMAX CYLINDER HEAD WITH CUPLESS INJECTOR BORE FOR 2001-2004 LB7 (DRIVER SIDE)
FLEECE PERFORMANCE ENGINEERING
$1,099.00Freedom Series cylinder heads for the LB7 6.6L Duramax now with a cupless injector bore - save time and money with no more injector cups to install, leak, or worry about. Each cylinder head is assembled from a new casting in our state-of-the-art Freedom...$1,099.00 -
FLEECE FPE-61-10001-P-CL FREEDOM SERIES DURAMAX CYLINDER HEAD WITH CUPLESS INJECTOR BORE FOR 2001-2004 LB7 (PASSENGER SIDE)
FLEECE PERFORMANCE ENGINEERING
$1,099.00Freedom Series cylinder heads for the LB7 6.6L Duramax now with a cupless injector bore - save time and money with no more injector cups to install, leak, or worry about. Each cylinder head is assembled from a new casting in our state-of-the-art Freedom...$1,099.00 -
FLEECE FPE-61-10002-D 2004.5-2005 FACTORY LLY DURAMAX CYLINDER HEAD (DRIVER SIDE)
FLEECE PERFORMANCE ENGINEERING
$1,099.00Introducing our Freedom Series cylinder heads for the 6.6L Duramax! Each cylinder head is manufactured in our state-of-the-art Freedom Racing Engine shop and is guaranteed to meet or exceed factory specifications. All heads are meticulously inspected,...$1,099.00 -
FLEECE FPE-61-10002-P 2004.5-2005 FACTORY LLY DURAMAX CYLINDER HEAD (PASSENGER SIDE)
FLEECE PERFORMANCE ENGINEERING
$1,099.00Introducing our Freedom Series cylinder heads for the 6.6L Duramax! Each cylinder head is manufactured in our state-of-the-art Freedom Racing Engine shop and is guaranteed to meet or exceed factory specifications. All heads are meticulously inspected,...$1,099.00 -
FLEECE FPE-61-10003-D 2006-2010 FACTORY LBZ/LMM DURAMAX CYLINDER HEAD (DRIVER SIDE)
FLEECE PERFORMANCE ENGINEERING
$1,099.00Introducing our Freedom Series cylinder heads for the 6.6L Duramax! Each cylinder head is manufactured in our state-of-the-art Freedom Racing Engine shop and is guaranteed to meet or exceed factory specifications. All heads are meticulously inspected,...$1,099.00 -
FLEECE FPE-61-10003-P 2006-2010 FACTORY LBZ/LMM DURAMAX CYLINDER HEAD (PASSENGER SIDE)
FLEECE PERFORMANCE ENGINEERING
$1,099.00Introducing our Freedom Series cylinder heads for the 6.6L Duramax! Each cylinder head is manufactured in our state-of-the-art Freedom Racing Engine shop and is guaranteed to meet or exceed factory specifications. All heads are meticulously inspected,...$1,099.00 -
FLEECE FPE-61-10004-D 2011-2016 FACTORY LML DURAMAX CYLINDER HEAD (DRIVER SIDE)
FLEECE PERFORMANCE ENGINEERING
$1,099.00Introducing our Freedom Series cylinder heads for the 6.6L Duramax! Each cylinder head is manufactured in our state-of-the-art Freedom Racing Engine shop and is guaranteed to meet or exceed factory specifications. All heads are meticulously inspected,...$1,099.00 -
FLEECE FPE-61-10004-P 2011-2016 FACTORY LML DURAMAX CYLINDER HEAD (PASSENGER SIDE)
FLEECE PERFORMANCE ENGINEERING
$1,099.00Introducing our Freedom Series cylinder heads for the 6.6L Duramax! Each cylinder head is manufactured in our state-of-the-art Freedom Racing Engine shop and is guaranteed to meet or exceed factory specifications. All heads are meticulously inspected,...$1,099.00 -
PPE 110100113 CYLINDER HEAD (ONE) CAST IRON - GM 6.6L DURAMAX 2004.5-2010 LLY/LBZ/LMM PORTED
PPE
$1,709.99The OEM Duramax cast-aluminum cylinder heads fall short over time - the different heat expansion rates between cast-iron engine block and cast-aluminum cylinder head cause head gasket scrubbing, and eventually blown head gaskets. The aluminum cylinder...$1,709.99 -
PPE 110100111 01-04 GM 6.6L DURAMAX PORTED CAST IRON CYLINDER HEAD (ONE) LB7
PPE
$1,709.99The OEM Duramax cast-aluminum cylinder heads fall short over time - the differing heat expansion rates between the cast-iron engine block and cast-aluminum cylinder head cause head gasket scrubbing and eventually blown head gaskets. The aluminum cylinder...$1,709.99 -
PPE 110100105 2011-2016 GM 6.6L DURAMAX CAST IRON CYLINDER HEAD ONE LML
PPE
$1,349.9950 States Emissions Legal (E.O. D-701-PENDING) The OEM Duramax cast-aluminum cylinder heads fall short over time - the different heat expansion rates between cast-iron engine block and cast-aluminum cylinder head cause head gasket scrubbing and...$1,349.99 -
PPE 116111200 MANIFOLDS AND UP-PIPES GM 02-04 CA Y-PIPE LB7
PPE
$1,121.39PPEs Manifolds and Up-Pipes are designed to maximize power and flow characteristics. The Up-Pipe bellows are internally-sleeved, made from aircraft-grade 304 stainless steel and designed with an increased inner diameter for higher flow. The entire...$1,121.39 -
PPE 116111800 MANIFOLDS AND UP-PIPES GM 07.5-10 Y-PIPE LMM
PPE
$1,121.39PPEs Manifolds and Up-Pipes are designed to maximize power and flow characteristics. The Up-Pipe bellows are internally-sleeved, made from aircraft-grade 304 stainless steel and designed with an increased inner diameter for higher flow. The entire...$1,121.39 -
PPE 116112000 MANIFOLDS AND UP-PIPES GM 11-16 Y-PIPE LML
PPE
$1,121.39PPEs Manifolds and Up-Pipes are designed to maximize power and flow characteristics. The Up-Pipe bellows are internally-sleeved, made from aircraft-grade 304 stainless steel and designed with an increased inner diameter for higher flow. The entire...$1,121.39 -
PPE 116112500 MANIFOLDS AND UP-PIPES GM 2017-2021+ L5P - RAW
PPE
$1,349.9950 States Emissions Legal (E.O. D-701-34) PPE High-Flow Manifolds are made from cast, high-sil moly. The PPE Up-Pipe bellows are internally sleeved, made from aircraft-grade 304 stainless steel, and designed with increased inner diameter for higher flow...$1,349.99 -
PPE 110100101 2001-2004 GM 6.6L DURAMAX CAST IRON CYLINDER HEAD (ONE) LB7
PPE
$1,349.9950 States Emissions Legal (E.O. D-701-38) The OEM Duramax cast-aluminum cylinder heads fall short over time - the different heat expansion rates between cast-iron engine block and cast-aluminum cylinder head cause head gasket scrubbing and eventually...$1,349.99 -
PPE 110100103 2004.5-2010 GM 6.6L DURAMAX CAST IRON CYLINDER HEAD (ONE) LLY/LBZ/LMM
PPE
$1,349.9950 States Emissions Legal (E.O. D-701-38). The OEM Duramax cast-aluminum cylinder heads fall short over time - the different heat expansion rates between cast-iron engine block and cast-aluminum cylinder head cause head gasket scrubbing, and eventually...$1,349.99 -
PPE 116111035 EXHAUST MANIFOLD W/UP-PIPES GM 2001 CA, 01-04 FED LB7 NO Y - SILVER
PPE
$1,070.9850 States Emissions Legal (E.O. D-701-34) PPE High-Flow Manifolds are made from cast, high-sil moly. The PPE Up-Pipe bellows are internally sleeved, made from aircraft-grade 304 stainless steel, and designed with increased inner diameter for higher flow...$1,070.98 -
PPE 116111220 MANIFOLDS AND UP-PIPES GM 2002-2004 CA Y PIPE LB7 - BLACK
PPE
$1,292.3850 States Emissions Legal (E.O. D-701-34) PPE High-Flow Manifolds are made from cast, high-sil moly. The PPE Up-Pipe bellows are internally sleeved, made from aircraft-grade 304 stainless steel, and designed with increased inner diameter for higher flow...$1,292.38 -
PPE 116111235 MANIFOLDS AND UP-PIPES GM 2002-2004 CA Y PIPE LB7 - SILVER
PPE
$1,292.3850 States Emissions Legal (E.O. D-701-34) PPE High-Flow Manifolds are made from cast, high-sil moly. The PPE Up-Pipe bellows are internally sleeved, made from aircraft-grade 304 stainless steel, and designed with increased inner diameter for higher flow...$1,292.38 -
PPE 116111420 MANIFOLDS AND UP-PIPES GM 2004.5-2005 Y PIPE LLY - BLACK
PPE
$1,292.3850 States Emissions Legal (E.O. D-701-34) PPE High-Flow Manifolds are made from cast, high-sil moly. The PPE Up-Pipe bellows are internally sleeved, made from aircraft-grade 304 stainless steel, and designed with increased inner diameter for higher flow...$1,292.38 -
PPE 116111435 MANIFOLDS AND UP-PIPES GM 2004.5-2005 Y PIPE LLY - SILVER
PPE
$1,292.3850 States Emissions Legal (E.O. D-701-34) PPE High-Flow Manifolds are made from cast, high-sil moly. The PPE Up-Pipe bellows are internally sleeved, made from aircraft-grade 304 stainless steel, and designed with increased inner diameter for higher flow...$1,292.38 -
PPE 116111620 MANIFOLDS AND UP-PIPES GM 2006-2007 Y PIPE LLY/LBZ - BLACK
PPE
$1,292.3850 States Emissions Legal (E.O. D-701-34) PPE High-Flow Manifolds are made from cast, high-sil moly. The PPE Up-Pipe bellows are internally sleeved, made from aircraft-grade 304 stainless steel, and designed with increased inner diameter for higher flow...$1,292.38 -
PPE 116111635 MANIFOLDS AND UP-PIPES GM 2006-2007 Y PIPE LLY/LBZ - SILVER
PPE
$1,292.3850 States Emissions Legal (E.O. D-701-34) PPE High-Flow Manifolds are made from cast, high-sil moly. The PPE Up-Pipe bellows are internally sleeved, made from aircraft-grade 304 stainless steel, and designed with increased inner diameter for higher flow...$1,292.38 -
PPE 116111820 MANIFOLDS AND UP-PIPES GM 2007.5-2010 Y PIPE LMM - BLACK
PPE
$1,292.3850 States Emissions Legal (E.O. D-701-34) PPE High-Flow Manifolds are made from cast, high-sil moly. The PPE Up-Pipe bellows are internally sleeved, made from aircraft-grade 304 stainless steel, and designed with increased inner diameter for higher flow...$1,292.38 -
PPE 116111835 MANIFOLDS AND UP-PIPES GM 2007.5-2010 Y PIPE LMM - SILVER
PPE
$1,292.3850 States Emissions Legal (E.O. D-701-34) PPE High-Flow Manifolds are made from cast, high-sil moly. The PPE Up-Pipe bellows are internally sleeved, made from aircraft-grade 304 stainless steel, and designed with increased inner diameter for higher flow...$1,292.38 -
PPE 116112035 MANIFOLDS AND UP-PIPES GM 2011-2016 Y PIPE LML - SILVER
PPE
$1,292.3850 States Emissions Legal (E.O. D-701-34) PPE High-Flow Manifolds are made from cast, high-sil moly. The PPE Up-Pipe bellows are internally sleeved, made from aircraft-grade 304 stainless steel, and designed with increased inner diameter for higher flow...$1,292.38 -
PPE 116112520 MANIFOLDS AND UP-PIPES GM 2017+ L5P - BLACK
PPE
$1,520.9950 States Emissions Legal (E.O. D-701-34) PPE High-Flow Manifolds are made from cast, high-sil moly. The PPE Up-Pipe bellows are internally sleeved, made from aircraft-grade 304 stainless steel, and designed with increased inner diameter for higher flow...$1,520.99 -
PPE 116112535 MANIFOLDS AND UP-PIPES GM 2017+ L5P - SILVER
PPE
$1,520.9950 States Emissions Legal (E.O. D-701-34) PPE High-Flow Manifolds are made from cast, high-sil moly. The PPE Up-Pipe bellows are internally sleeved, made from aircraft-grade 304 stainless steel, and designed with increased inner diameter for higher flow...$1,520.99 -
INDUSTRIAL INJECTION PDM-06037 GM COMMON RAIL GORILLA GIRDLE FOR 11-16 6.6L LML DURAMAX 14MM
INDUSTRIAL INJECTION
$1,321.7614mm Duramax Gorilla Girdle Kit (LML)The thick Gorilla Girdle is the strongest girdle on the market. It utilizes the XXL ARP 14mm main studs. This 14mm girdle only fits the LML Engines from 2011 - 2017. Core charge on the upper oil pan 250.00 Core...$1,321.76 -
INDUSTRIAL INJECTION PDM-06035 GM COMMON RAIL GORILLA GIRDLE FOR 01-10 6.6L LB7 LLY LBZ LLM DURAMAX 14MM
INDUSTRIAL INJECTION
$1,321.7614mm Duramax Gorilla Girdle Kit (LB7,LLY,LBZ,LMM)The thick Gorilla Girdle is the strongest girdle on the market. It utilizes the XXL ARP 14mm main studs. This custom girdle fits the LB7, LLY, LBZ, and LMM Engines from 2001 - 2010 Core charge on the...$1,321.76 -
INDUSTRIAL INJECTION PDM-LB7SH GM REMANUFACTURED STOCK HEADS FOR 01-04 LB7 DURAMAX
INDUSTRIAL INJECTION
$1,409.66The Industrial Injection LB7 Duramax Stock Remanufactured Heads are designed to be a factory replacement. Complete ready to bolt on. Heads are first jet washed in a high pressure spray cabinet to remove oil and dirt, then glass beaded to remove carbon...$1,409.66 -
INDUSTRIAL INJECTION PDM-LLYSH GM REMANUFACTURED HEADS FOR 2004.5-2005 LLY 6.6L DURAMAX
INDUSTRIAL INJECTION
$1,453.26The Industrial Injection LLY Duramax Stock Remanufactured Heads are designed to be a factory replacement. Complete ready to bolt on. Heads are first jet washed in a high pressure spray cabinet to remove oil and dirt, then glass beaded to remove carbon...$1,453.26 -
INDUSTRIAL INJECTION PDM-LMLSH GM REMANUFACTURED STOCK HEADS FOR 11-16 LML 6.6L DURAMAX
INDUSTRIAL INJECTION
$1,453.26The Industrial Injection LML Duramax Stock Remanufactured Heads are designed to be a factory replacement. Complete ready to bolt on.Heads are first jet washed in a high pressure spray cabinet to remove oil and dirt, then glass beaded to remove carbon...$1,453.26 -
MAHLE 224-3985WR-0.25MM PISTON WITH RINGS (.25MM) FOR 11-16 GM DURAMAX
MAHLE
$1,051.20The MAHLE 224-3985WR-0.25MM Piston with Rings is specifically crafted for the 2011-2016 GM 6.6L Duramax engine, ensuring optimal performance and reliability for your heavy-duty pickup truck. Designed to meet stringent OEM specifications, this piston set...$1,051.20 -
WEHRLI WCF100373 17-22 L5P DURAMAX BILLET EXHAUST MANIFOLD KIT W/ GASKETS AND ARP HARDWARE
WEHRLI CUSTOM FABRICATION
$1,526.78WCFab’s 2017-2025 Duramax Billet Exhaust Manifolds with EGR Riser Flange replace the restrictive factory cast parts with high-strength, TIG-welded high-flow billet steel components designed to enhance exhaust flow characteristics, improving turbo...$1,526.78 -
WEHRLI WCF100363 01-16 CHEVROLET DURAMAX EXHAUST MANIFOLD KIT W/ GASKETS & HARDWARE
WEHRLI CUSTOM FABRICATION
$1,357.03WCFab’s 2001-2016 Duramax Billet Exhaust Manifolds replace the restrictive factory cast parts with high-strength, TIG-welded high-flow billet steel components designed to enhance exhaust flow characteristics, improving turbo spool up, lowering EGTs...$1,357.03 -
AFE POWER 48-34009-PK TWISTED STEEL UP-PIPES & EXHAUST MANIFOLDS FOR 01-04 GM 6.6L DURAMAX LB7 W/FEDERAL EMISSIONS
AFE POWER
$1,271.66Elevate your driving experience with the AFE POWER 48-34009-PK Twisted Steel Up-Pipes & Exhaust Manifolds, specifically engineered for 2001-2004 GM 6.6L Duramax LB7 models. These high-performance up-pipes enhance engine efficiency and output, allowing...$1,271.66 -
WAGLER WCPC6622.1 STREET INTAKE MANIFOLD 2001-2004 GM 6.6L DURAMAX LB7
WAGLER COMPETITION PRODUCTS
$1,250.00The WAGLER WCPC6622.1 Street Intake Manifold is a cutting-edge upgrade designed specifically for the 2001-2004 GM 6.6L Duramax LB7 engines. This aftermarket intake manifold is expertly crafted to replace the factory y-bridge entirely, offering superior...$1,250.00 -
MAHLE 224-3935WR-1.00MM PISTON SET W/RINGS (1.00MM) FOR 11-16 GM DURAMAX
MAHLE
$1,243.20MAHLE presents the 224-3935WR-1.00MM Piston Set with Rings, designed for the 2011-2016 GM 6.6L Duramax LML/LGH engines. This piston set features top-notch OE quality, ensuring optimal performance and reliability for your vehicle. Model Model year ...$1,243.20 -
MAHLE 224-3935WR-0.75MM PISTON W/RINGS (.75MM) FOR 11-16 GM DURAMAX
MAHLE
$1,142.72The MAHLE 224-3935WR-0.75MM Piston with Rings .75mm is a premium engine piston set designed for the 2011-2016 GM 6.6L Duramax LML/LGH engines. Engineered with OE quality and precision, MAHLE pistons boast exceptional features that ensure optimal...$1,142.72 -
MAHLE 224-3935WR-0.50MM PISTON W/RINGS (.50MM) FOR 11-16 GM DURAMAX
MAHLE
$1,202.96MAHLE presents the 224-3935WR-0.50MM Piston Set with Rings, designed for 2011-2016 GM 6.6L Duramax LML/LGH engines. Crafted to OE quality standards, these pistons boast outstanding features crucial for optimal engine performance. The compensated ring...$1,202.96 -
MAHLE 224-3935WR PISTONS W/RINGS (STD) FOR 11-16 GM DURAMAX
MAHLE
$1,202.96The MAHLE 224-3935WR Piston Set with Rings is a top-quality engine piston set designed specifically for the 2011-2016 GM 6.6L Duramax LML/LGH engines. Made by MAHLE, a renowned OE piston manufacturer, these pistons are crafted to deliver exceptional...$1,202.96 -
ARP 230-4202 HEAD STUD KIT-625 SERIES FOR 2001-2016 GM 6.6 DURAMAX ENGINE
ARP
$1,727.31The ARP 230-4202 Head Stud Kit-625 Series is designed for the 2001-2016 GM 6.6L Duramax LB7/LLY/LBZ/LMM/LML engines. This durable and reliable head stud kit is a crucial component for enhancing the performance and reliability of your Duramax engine...$1,727.31