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Engine parts such as Valve Springs, Connecting Rods, Oil Pans, Head Studs, & more for the 2001+ GM 6.6L Duramax Diesel Trucks.
We offer top brands such as AFE, Alliant Power, Dirty Hooker Diesel, & many more!
Brand: Wagler Competition Products
Part Number: WCPC6618
Improve the valvetrain in your 2001-2016 GM 6.6L Duramax when you install the Wagler WCPC6618 Billet Rocker Arm Bridge Set. These rocker arm bridges feature forged 4340ACQ certified billet steel construction to handle the increase horsepower of your modified Duramax. With all drafting, design, progr..
$450.00
Backordered
Brand: AFE
Part Number: 46-40024
Backordered with No ETA (Updated 6/12/25)
Fits: 2001-2016 Gm 6.6L Duramax LB7/LLY/LBZ/LMM/LML
The AFE Bladerunner Exhaust Manifolds feature a bolt-on design and will increase power, performance, and exhaust flow in your 01-16 GM Duramax.
Machined port:
These manifolds have bo..
$657.00
Brand: DmaxStore
Part Number: CST6418MS0LCAX
Compstar Xtreme Connecting Rods (Full Set of 8)
Fits 2001-2016 6.6L Duramax
Conservatively rated at 1000HP
Part # CST6418MS0LCAX
The next step in the Compstar line up. All the quality, reliability and workmanship you have relied upon for years from the Compstar line up is taken to the&nb..
$1,200.00
Brand: Dirty Hooker Diesel
Part Number: 300-128
Not all up pipe bolts are created equal! Its just about impossible to find the correct dimension M10 bolt with the correct shoulder and socket size as factory. Well, not anymore!DHD's up pipe bolts are designed to be an exact replacement for your rusty or broken OE hardware. These bolts work well on..
$2.18
Brand: Dirty Hooker Diesel
Part Number: 300-127
This kit contains a full set of triple layer Stainless Steel MLS Up Pipe Gaskets.Kit includes 4 Gaskets!2 Up Pipe to Turbo GasketsGM Replacement Part# 971926182 Manifold to Up Pipe GasketsGM Replacement Part# 97188685A leaky up pipe gasket cause a ticking sound within the engine bay and drastically ..
$19.95
Brand: Dirty Hooker Diesel
Part Number: 800-200
Refreshing or resealing your engine? Replace your rusty, damaged or broken hardware with this zinc coated oil pan bolt kit from DHD.
Note: This kit will allow you to convert your studs to bolts, and or use the nuts provided on your studs.
Features:
Perfect Fit
OE Gr..
$26.99
Brand: DmaxStore
Part Number: DMAXGIRDLE
DmaxStore's Durastar Billet Main Girdle and Stud KitFits 2001-2016 LB7/LLY/LBZ/LMM/LML Duramax EnginesPart# DMAXGIRDLEDuramax engines are known for main cap movement on stock motors and it gets worse with more horsepower. The main cap movement can cause premature bearing wear or even worse, cat..
$699.00
Backordered
Brand: DmaxStore
Part Number: D333M81-CS
Backordered with a ETA of August (Updated 6/12/25)
DuraStar Crankshaft
*Built by Callies*
Fits 2001-2016 Chevy / GMC 6.6L Duramax
Part# D333M81-CS
Callies Durastar crankshafts are designed to be substantially stronger than OEM shafts currently found in GM’s popular ..
$1,874.00
Brand: DmaxStore
Part Number: MAX-DPB-STOCK
Max-Flow Down Pipe Support BracketFits 2001-2016 Chevrolet/GMC Silverado/Sierra 6.6L Duramax*See Fitment Notes Below*Part# MAX-DPB-STOCKIt is very common for the OEM bracket to crack and fail on the original up pipes, now we offer an upgraded replacement that is fabricated from 3/16" 304 stainless s..
$24.99
Brand: DmaxStore
Part Number: DMAX-PERF-SB-1
DmaxStore Performance Stage 1 Short Block (700HP)Fits 2001-2016 Chevy/GMC 2500/2500HDPart# DMAX-PERF-SB-1*Please Call For Availability* Free shipping is to the lower 48 states only!*NOT LEGAL FOR SALE OR USE IN CALIFORNIA. THE MANUFACTURE, SALE, OFFER FOR SALE, OR INSTALLATION OF THIS PRODUCT MAY AL..
$10,620.00
Brand: DmaxStore
Part Number: DMAX-PERF-SB-2
DmaxStore Performance Stage 2 Short Block (1000HP)Fits 2001-2016 Chevy/GMC 2500/2500HDPart# DMAX-PERF-SB-2*Please Call For Availability* Free shipping is to the lower 48 states only!*NOT LEGAL FOR SALE OR USE IN CALIFORNIA. THE MANUFACTURE, SALE, OFFER FOR SALE, OR INSTALLATION OF THIS PRODUCT MAY A..
$12,862.00
Brand: Fleece Performance
Part Number: FPE-DMAX-OC-xxx
Dress up your engine bay with our billet aluminum oil cap for the 2001-2016 Duramax! Includes o-ring and cam-lock and is a direct replacement for your OEM cover. Choose from Black, Blue or RedPart numbers: FPE-DMAX-OC-BLK, FPE-DMAX-OC-BLU, FPE-DMAX-OC-RED..
$39.99
Brand: Gator Fasteners
Part Number: HSK66
When it comes to keeping your 6.6L Duramax diesel engine (LB7, LLY, LBZ, LMM, LML) together under extreme stress, the Gator Fasteners Heavy Duty Head Stud Kit (HSK66) is the ultimate solution. Designed to withstand high boost, heavy towing, and extreme performance applications, this kit provides sup..
$549.99
Brand: Industrial Injection
Part Number: PDM-07184
The Industrial Injection PDM-07184 Rocker Arm Spacer Kit can help improve the reliability of the valvetrain in your 2001-2016 GM 6.6L Duramax. This rock arm spacer kit removes the springs in between the rockers that are design to keep the rockers aligned under high load or high RPMs. The stock sprin..
$214.78
Brand: Industrial Injection
Part Number: 4490
The Industrial Injection 6.6L Duramax Stage 1 Pushrods are designed to add strength and reliability to your 2001-2016 GM Duramax. If you are running higher RPM and higher boost number than stock these billet pushrods are a must.
FEATURES:
Added Strength
Increased Performance
Good Up To ..
$23.92
Brand: Industrial Injection
Part Number: 449000
The Industrial Injection 6.6L Duramax Stage 3 Billet Pushrods are designed to add Ultimate strength and reliability to your 2001 - 2016 GM Duramax. If you are running over 4500rpm and over 100psi boost these Stage 3 Billet Pushrods are a must.
FEATURES:
Added Strength
Chomoloy Design
In..
$32.00
Brand: Lisle Corp
Part Number: 72400
The Lisle 72400 Exhaust Manifold Bolt Drill Template (GM 6.6L Duramax) removes broken exhaust manifold bolts on your 6.6L Duramax without damaging the cylinder head. Tapered bolts center the base plate over the bolt holes and slip fit bushing allow you to move from hole to hole without moving the ba..
$150.99
Brand: Mahle
Part Number: 5458X
Fits: 2001-2016 GM 6.6L Duramax LB7/LLY/LBZ/LMM/LML (.95MM)
This Mahle Wave-Stopper Cylinder Head Gasket 5458X (.95 Thickness) is a top-quality replacement for the head gasket in your 2001-2016 GM 6.6L Duramax. This gasket kit comes with the Combustion Load Limiter technology manufactured ou..
$177.69
Brand: Mahle
Part Number: 5458X
Fits: Fits: 2001-2016 GM 6.6L Duramax LB7/LLY/LBZ/LMM/LML (1.00mm)
This Mahle Wave-Stopper Cylinder Head Gasket is a top-quality replacement for the head gasket in your 2001-2016 GM 6.6L Duramax. This gasket comes with the combustion load limiter technology constructed out of multi-layered s..
$176.37
Brand: Mahle
Part Number: 5458X
Fits: 2001-2016 GM 6.6L Duramax LB7/LLY/LBZ/LMM/LML (1.05mm)
The Mahle Wave-Stopper Cylinder Head Gasket is a top-quality replacement for the head gasket in your 2001-2016 GM 6.6L Duramax. This gasket features the combustion load limiter technology constructed out of multi-layered steel that lets..
$185.52
Brand: Mahle
Part Number: 67775
The MAHLE 67775 Engine Timing Cover Seal is a an OEM replacement for your 2001-2016 GM 6.6L Duramax. Built to factory specifications, the Engine Timing Cover Seal maintains an OEM performance.FEATURES:OE QualityMaintains a Factory PerformancePart number: 67775..
$35.86
Brand: Mahle
Part Number: MS19398
Fits: 2001-2016 GM 6.6L Duramax LB7/LLY/LBZ/LMM/LML
When installing new exhaust manifolds on your 2001-2016 GM 6.6L Duramax make sure you order the Mahle exhaust manifold gasket. Mahle gaskets and seals are engineered to meet OEM specifications and standards. This gasket set featur..
$38.53
Brand: Mahle
Part Number: F31903
Fits: 2001-2016 GM 6.6L Duramax Able to tolerate up to 1400 degrees, the Exhaust Manifold to Up-Pipe Gasket provides your 2001-2016 GM 6.6L Duramax with a replacement gasket. The Exhaust Manifold to Up-Pipe Gasket maintains a tight seal and is made to factory specifications. Mahle F3..
$8.09
Brand: Mahle
Part Number: F32918
Get an OE quality gasket for your 2001-2016 GM 6.6L Duramax when you install the MAHLE F32918 Exhaust Up-Pipe To Turbo Gasket. Built to meet factory specifications, the Exhaust Up-Pipe To Turbo Gasket ensures your Duramax is running smoothly.FEATURES:OE QualityMaintains a Factory PerformancePart num..
$14.10
Brand: Mahle
Part Number: MS-2218P-.25MM
The Clevite MS-2218P-.25MM P-Series Main Bearing Set is a superior-quality replacement for the burnt-up bearings in your 2001-2016 GM 6.6L Duramax. These high performance Clevite P-Series bearings are the longest running series of Clevite bearings with the main bearings being full grooved for superi..
$86.14
Brand: Mahle
Part Number: MS-2218P-.50MM
The Clevite MS-2218P-.50MM P-Series Main Bearing Set is a top-quality replacement for the scorched bearings in your 2001-2016 GM 6.6L Duramax. These Clevite P-Series performance bearings are the longest running series of Clevite bearings with the main bearing set having been full grooved for maximum..
$94.24
Brand: Mahle
Part Number: MS-2218P
The Clevite MS-2218P P-Series Main Bearing Set is a high-quality replacement for the spun bearings in your 2001-2016 GM 6.6L Duramax. The Clevite P-Series are the longest running series of Clevite high performance bearings with the main bearings being full grooved to maximize oil flow for lubricati..
$88.28
Brand: Mahle
Part Number: C31900
Don't fall victim to a faulty gasket when you add the MAHLE C31900 Thermostat Housing Gasket to your 2001-2016 GM 6.6L Duramax. The Thermostat Housing Gasket maintains a factory performance and is made to OEM specifications.FEATURES:OE QualityMaintains a Factory PerformancePart number..
$6.44
Brand: Mahle
Part Number: K31904
The MAHLE K31904 Water Pump Seal is a direct replacement for your 2001-2016 GM 6.6L Duramax. MAHLE gaskets and seals are made from high quality materials that provide you with a factory-like fit and a long service life. This gasket seals the back of the water pump to the front cover. FEATURES:C..
$1.80
Brand: Manton
Part Number: D-105-KIT-Dmax
Manton pressure tower valve spring kit for 01-16 Duramax. Kid includes:32 springs32 retainers32 spring cups64 locksPart number: D-105-KIT-Dmax..
$660.00
Brand: Merchant Automotive
Part Number: 10092
The Merchant Automotive 10092 Torque Converter Bolt Kit are a high-quality replacement for the stripped or snapped converter bolts in your 2001-2016 GM 6.6L Duramax. This converter bolt kit will work with stock and most aftermarket applications. FEATURES:Quality Tested(6) Bolts IncludedDi..
$19.08
Brand: Merchant Automotive
Part Number: 10810
Front and Rear Engine Crankshaft Seal InstallersIncludes:Main Crank Seal Driver, Front, Duramax #10328Main Crank Seal Driver, Rear, Duramax #10330Front Main Seal, LB7 LLY LBZ LMM LML LGH L5P, 2001-2018 Duramax #97209341Rear Main Seal, LB7 LLY LBZ LMM LML LGH L5P, 2001-2018 Duramax #97209342Part numb..
$301.87
Brand: Merchant Automotive
Part Number: 10358
Many service jobs on the Duramax require removal of the fan clutch. Without the right tool, removal can be difficult and damage to the nut can occur. Our fan clutch wrench makes for simple removal and includes a pocket to accept an air hammer bit for added convenience.
Part number: 1035..
$59.35
Brand: Merchant Automotive
Part Number: 22110
A very handy tool. Hold the flywheel in place without removing the starter! Part number: 22110..
$22.15
Brand: Merchant Automotive
Part Number: 10328
Merchant Automotive Front Main Crank Seal DriverPart number: 10328..
$130.88
Brand: Merchant Automotive
Part Number: 10330
Merchant Automotive Rear Main Crank Seal DriverPart number: 10330..
$130.88
Brand: Merchant Automotive
Part Number: 10219
Simply thread the T-Handles into any GM torque converter using 10 x 1.5mm converter bolts to get a firm grip that makes it easier to install heavy converters in closed bell housings. No more danger of it slipping out of your hands or cutting your self on the bell housing.Part number: 10219..
$88.88
Brand: AC Delco
Part Number: 94011603
The GM 94011603 Coolant Bypass Tube Lower Pipe Seal is a genuine GM part for your 2001-2016 GM 6.6L Duramax. Choose OEM seals for a perfect fit and long service life on your Duramax.
FEATURES:
Genuine OEM Replacement
Direct-Fit Installation
Part number: 94011603..
$3.41
Brand: AC Delco
Part Number: 11610681
The GM 11610681 Cylinder Head Bolt is an OE replacement for the factory installed head bolts in your 2001-2016 GM 6.6L Duramax. The factory bolts are torque-to-yield and are not intended to be re-used.
FEATURES:
OEM Replacement
Sold Individually
Applic..
$9.98
Brand: General Motors
Part Number: 12624683
The GM 12624683 Replacement Passenger Side Exhaust Manifold is a direct replacement for your 2001-2016 GM 6.6L Duramax. Over time, due to heat cycles and corrosion, the factory exhaust manifolds can crack or become damaged. This manifold is a factory replacement for your stock one. Gaskets not ..
$360.41
Brand: AC Delco
Part Number: 97373522
Add the GM 97373522 Turbo Coolant Pipe Banjo Seal to your 2001-2016 GM 6.6L Duramax. This Banjo Seal is a factory replacement and has a direct-fit installation.
FEATURES:
Genuine OEM Replacement
Direct-Fit Installation
Sold Individually. Two seals required per engine.
..
$9.96
Brand: AC Delco
Part Number: 11611132
The GM 11611132 Up-Pipe Bolt is a genuine OEM replacement for the seized, stripped or broken up pipe bolts in your 2001-2016 GM 6.6L Duramax. This bolt will connect the up-pipes to the exhaust manifolds and the up-pipes to the turbo pedestal. FEATURES:Genuine GM PartDirect Fit Replacement..
$7.03
Brand: Pacific Performance Engineering
Part Number: 116110505
If you have original GM Manifolds and PPE Up-Pipes, this bracket (stay) secures your PPE Down-Pipe and prevents movement. An unsecured Down-Pipe that moves can come in contact and damage the Up-Pipe bellow even under normal driving conditions. This movement can also contribute to metal fatigue and c..
$31.49
Brand: Pacific Performance Engineering
Part Number: 118062010
Creates a tight seal between the Exhaust Manifolds and 6.6L GM Duramax engine. Two piece kit features multi-layered 301 stainless steel, PPE Manifold Gaskets are designed to fit both PPE High-Flow Exhaust Manifolds and GM OEM manifolds.GM part number: 98002804PPE Part Number: 118062010..
$19.79
Brand: SoCal Diesel
Part Number: SCLBZ-LMLMainStud
SoCal Diesel is a company known for providing high-performance diesel parts and accessories, particularly for trucks and heavy-duty vehicles. They focus on aftermarket products that enhance the performance, reliability, and efficiency of diesel engines.
SoCal Diesel main stud kit for LB7-LML main..
$370.00
Brand: Dirty Hooker Diesel
Part Number: 300-126
Everything you need to service 1 Duramax up pipe. Works on both passenger or driver side up pipes. Unlike our competitors, these bolts are dimensionally the same as OE. Kit Includes:(1) Triple Layer Stainless Up Pipe to Turbo Gasket(1) Triple Layer Stainless Up Pipe to Manifold Gasket(6) 12PT 1..
$24.99
Brand: XDP Mfg
Part Number: XD315
The XDP Pushrods 3/8" Street Performance XD315 eliminate the weak link in the valvetrain of your 2001-2016 GM 6.6L Duramax. The factory pushrods in your Duramax engine can hardly handle stock output levels. The increased cylinder pressure, high engine RPM, and increased valve spring pressures of you..
$349.95
Brand: XDP Mfg
Part Number: XD384
The XDP Billet Rocker Arm Valve Bridge Set XD384 will greatly improve the factory valvetrain in your modified 2001-2016 GM 6.6L Duramax. The OE rocker arm bridges in your valvetrain were designed for stock output levels. Once modified, your Duramax engine can quickly produce more stress and load tha..
$459.95