Internal Engine Parts

Gator Fasteners Heavy Duty Main Studs are design to hold the bottom end of your 6.6L together whether you're building a tow rig, race truck or just a daily driver. These fasteners have a much higher strength and will not stretch like the factory bolts will. These Gator Fasteners Performance Mai..

If you are wanting to keep your 6.6L Duramax on the road for the long haul, you need the high quality parts like these Gator Fastener Rod Bolts. These head studs have a much higher strength and will not stretch like the factory bolts will.Part number: RBK66..

Replace the rod bearings in your 2001-2016 GM 6.6L Duramax with the Clevite CB-1805P P-Series Rod Bearing (Standard). The P-Series Rod Bearing has a hardened steel back for added strength and is designed for applications with extremely high RPMs that can cause severe rod bore close in. P S..

Restore lost power from the valvetrain in your 2001-2016 GM 6.6L Duramax with the XDP Pushrods 7/16" Competition & Race Performance XD316. The factory pushrods in your Duramax engine are not adequate to handle the stress from your modified engine. Increased cylinder pressures, higher engine RPM,..

Gator Fasteners Heavy Duty Main Studs are design to hold the bottom end of your 6.6L together whether you're building a tow rig, race truck or just a daily driver. These fasteners have a much higher strength and will not stretch like the factory bolts will. These Gator Fasteners Performance Mai..

If you are wanting to keep your LP5 6.6L Duramax on the road for the long haul, you need to replace your head bolts with upgraded head studs. These head studs have a much higher strength and will not stretch like the factory bolts will. This will help keep your truck from popping head gaskets. These..

DHD's TORQ series studs provide the perfect blend of quality and value that all Motorsports enthusiast's seek. These studs are designed to provide marketplace options for the hobbyist and a high quality budget friendly alternative to inadequate OE hardware. While working directly with the manuf..

The Wagler WCPC6669 Pinned Oil Pump is an excellent upgrade for the oiling system when rebuilding the engine in your 2001-2010 GM 6.6L Duramax. Wagler starts with a brand-new GM oil pump and pins the gear to the shaft to prevent the gear from spinning off the shaft. This pump includes the gear &..

The Wagler WCPC6658 Street Girdle adds strength to your 2001-2010 GM 6.6L Duramax engine. The WCP Street Girdle features a 1/2" thick, one-piece design. It increases strength in the bottom end of your Duramax block by tying the main caps to the oil pan bolts. Each kit includes ARP Main Studs, ARP Cr..

The Colt Cams C.1014.S Street/Strip Camshaft is high-performance "drop-in" replacement for your 01-10 GM 6.6L Duramax. Constructed from a brand new billet, this camshaft comes pre-machined with a new keyway and key. This eliminates the weak factory dowel pin which has been known to shear allowing th..

Todays level of competition, advancements in fuel delivery, and advancements in induction require more of your engine. Everyone is looking for the edge on their competition, whether it be more power, or better longevity, it all counts.Dirty Hooker Diesels years of experience building high performanc..

Performance Cast PistonsDesigned for street/strip or pulling trucks making 400-1000HP that still get used as a daily driver or work truck. Machined from OE castings (retaining the cast iron ring insert) to give the same drivability and longevity of a replacement piston with additional strength neces..

Replace the piston rings inside your 2001-2010 GM 6.6L Duramax when you install the MAHLE S41909 Piston Ring Set (Standard). Made to meet stock specifications, the Piston Ring Set provides a factory performance. The Piston Ring Set is constructed from OE materials.FEATURES:OE Quality ..

This all in one seal kits provides all the quality OE GM gaskets and seals required to replace or reseal your rear engine cover. Also included are 2 new upper oil pan dowels as these are often distorted during service and a new tube of Mahle JV8 premium aluminum sealant.Includes:(2) Block-to-cover C..

Strengthen the bottom end in your 2001-2016 GM 6.6L Duramax with the Wagler WCPC6641 Billet Main Caps. Designed, and machined in-house at Wagler Competition Products, these Billet Main Caps increase strength and rigidity and work with or without the WCP Girdle. WCP Billet Main Caps are designed..

Upgrade the valvetrain in your 2001-2016 GM 6.6L Duramax engine with the Wagler WCPC6643 Dual Valve Spring Kit With Steel Retainers. Designed to work with your factory spring shim, the dual valve spring kit increases seat pressure to 145lbs at 1.650 installed height.   130lb seat pres..

Upgrade the valvetrain in your 2001-2016 GM 6.6L Duramax with the Wagler WCPC6664 Pushrods. Built from 3/8" x .135 wall 4130 Chromoly, these push rods increase strength and are able to handle the stress associated with higher engine RPM and higher valve spring pressures commonly found in performance..

The Wagler WCPC6686-1 Alternate Fire Street Stage 1 Camshaft provides your 2001-2016 GM 6.6L Duramax with increased driveability and increased performance. This cam is a great replacement for towing, street use, and mild race applications. This Stage 1 camshaft does not require any piston valve reli..

The Wagler WCPC6686-1 Street Stage 1 Camshaft provides your 2001-2016 GM 6.6L Duramax with increased driveability and increased performance. This cam is a great replacement for towing, street use, and mild race applications. This Stage 1 camshaft does not require any piston valve reliefs for install..

The Wagler Duramax Entry Level Rotating Assembly is the ideal package for a stock workhorse or a hot street truck making up to 1,000 HP. Even if the power goals are much less, this assembly can offer piece of mind for those who abuse their engines while earning a living.Parts Included:Callies forged..

The affordable Wagler Duramax Street Fighter connecting rods are the perfect solution for a hot street truck making 1,000 HP or less. The as-forged manufacturing process allows for the strength of forging, yet keeps the cost down by removing some of the extra processes that are put into the Competit..

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..

These head studs have a much higher strength and will not stretch like the factory bolts will. This will help keep your truck from popping head gaskets. These Gator Fasteners Performance Head Studs are a Heavy Duty stud designed for stock to moderately built Duramax engines.Part number: HSK66..

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..

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..

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..

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 lubricatio..

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..

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..

The XDP Performance Valve Springs & Retainer Kit XD386 are a perfect upgrade for your modified 2001-2016 GM 6.6L Duramax. Camshaft upgrades and other modifications that increase boost require more valve control. The XDP Performance Valve Spring feature a conical design for better valve control t..

The XDP Rocker Arm Shafts XD385 are specially designed to minimize the common oiling issues in the 2001-2019 GM 6.6L Duramax engines. From the factory, the oil supply to the rocker arm is shut off as the valve is opened. This lack of lubrication can cause excessive wear on your valvetrain and premat..

DHD's TORQ series studs provide the perfect blend of quality and value that all Motorsports enthusiast's seek. These studs are designed to provide marketplace options for the hobbyist and a high quality budget friendly alternative to inadequate OE hardware. While working directly with the manuf..

New GM oil pumpPinned to keep the gear from spinning on the shaftShimmed for more oil pressureFits LML DuramaxComes with gear and nutPart number: WCPC66116..

01-16 Chevy 6.6L Duramax Diesel ARP Head Studs ARP 01-16 Duramax Head Stud Kit 230-4201To overcome head gasket failures that can occur in diesel engines employed in truck and RV applications, industry leader ARP has introduced extra heavy-duty head studs for the popular Ford, Dodge and GM power..

Factory flywheel bolts are torque to yield.  That process stretches the bolt as it is tightened to spec.  Because of this, the bolt must never be reused.    Bolts are sold as set of 8. 8 REQUIRED per engine. ..

Constructed to meet factory specifications, the MAHLE 224-3451WR Piston With Rings (Standard, Left Bank) is engineered as an OEM replacement for your 2001-2005 GM 6.6L Duramax LB7/LLY. The MAHLE Piston With Rings features a lightweight and expansion controlled design that maintains an OE performance..

Forged high performance connecting rod’s made by Carrillo to PPE specifications. Manufactured from high strength Carrilloloy(a proprietary blend of steel). PPE recommends the use of these rods in application where over 650 RWHP is desired. These rods are much stronger and lighter than factory ro..

This kit is a must have for any high performance Duramax! The ARP main stud kit keeps your mains from walking and fretting by clamping down on them.Includes:Main Studs Side Bolts ARP Moly LubeTorque Specs are 200 FT/LBS on the Mains with ARP Moly Lube, and 86 FT/LBS on the Side Bolts with ..

Developed for high performance use, crafted with precision, and proven on the track, this combination of MaxSpool Engineering Springs and Retainers are a perfect fit for your heavy duty or racing Duramax applications...

Featuring a factory construction, the MAHLE 224-3452WR Piston With Rings (Standard, Right Bank) is an OEM replacement to your 2001-2005 GM 6.6L Duramax LB7/LLY. Each MAHLE Piston With Rings features a lightweight and expansion controlled design that maintains an OEM performance.FEATURES:LightweightQ..

01-16 Chevy 6.6L Duramax Diesel ARP Custom Age 625+ Head StudsARP® ADDS 260,000 PSI HEAD STUDS FOR DURAMAX DIESELS With performance enthusiasts adding increasing amounts of turbo boost to diesel applications, ARP® has provided an extra measure of security in the form of extra-strong he..

This is a must for High HP applications, these specialty bolt will keep the main caps from walking at High Horse Power and High RPM's. Includes Main Studs as well as the Side Bolts and ARP Moly Lube. Torque Specs are 200 FT/LBS on the Mains with ARP Moly Lube, and 86 FT/LBS on the Side Bolts with A..

Mahle Clevite high performance H-Series connecting rod bearings. Complete set (8).Min. Std. Shaft Diameter:2.4764" (62.9006mm)Max. Std. Shaft Diameter:2.4772" (62.9209mm)Min. Vert. Oil Clearance:0.0010" (0.0254mm)Max. Vert. Oil Clearance:..

Mahle Clevite Thrust Washer Set for 2001-2011 6.6L Duramax Diesel. This kit contains 3 Pieces, Position Number 1 & 5 Use with Part Number MS-2218P or MS-2218H Mahle part number: TW-610S Specs:Part Numbers CTNC109R-AMB-3776WTW610SAHousing bore (min - max) 106.749 mm - 106.998 mm ..

-GM Duramax 6.6L 16.8CR Cast Piston Set Recommended for applications up to 900HP -No pockets -Performance stock replacement -Piston skirts are coated with a dry film lubricant to reduce friction. -STD 4.055, 20 over 4.075, or 40 4.095  Mahle part numbers: 930036055 Std930036055.020 20 over9300..

Valve Guide Seal, LB7/LLY/LBZ/LMM/LML, 2001+ DuramaxDURAMAX Valve Guide Seal-32 per engine-16 per head Part number: 13939..

Mahle Clevite high performance series main bearing set for 2001-2011 6.6L Duramax Diesel.Min. Std. Shaft Diameter:3.1459" (79.9059mm)Max. Std. Shaft Diameter:3.1466" (79.9236mm)Min. Vert. Oil Clearance:0.0009" (0.0229mm)Max. Vert. Oil Cle..