Internal Engine Parts

Fits cracked-cap Commonrail style rods only. Usually found in 2003+ 5.9L & 6.7L Cummins engines. This is for a full set of 12   These bearings are now available COATED by Polydyn. Select option above.  Coating generally takes 3-5 business days, please keep this in mind if you are in a hurry. You ..

Old part number 3971212 Cummins part number: 4943979..

Interstate-McBee 2003-2004 Dodge 5.9L Cummins CR piston. Single piston. Quantity six(6) are required for entire set. Choice of standard bore, .020 over bore, or .040 over bore. ATTENTION! If you are buying a SINGLE piston and have a 2003 truck, you need to check your HP tag. If it says 250hp, you ..

This set is per piston...

98.5-09 Dodge 5.9L & 6.7L Cummins Rocker Arm Cradle. #5 in the picture. Single part only. 6 are needed for entire replacement. Cummins: 3964908..

Mahle Monotherm diesel pistons offer maximum power for heavy-duty performance. These forged steel pistons have a simple design and very high structural stability to handle ever-increasing mechanical loads, both now and in the future. With a weight comparable to aluminum, Mahle Monotherm diesel pisto..

24V CUMMINS PUSHRODS Due to the overall lengths of the Stock 3/8 diameter pushrods being almost 11.5 inches in the 24V Cummins, we feel the strength of the OEM pushrods are not adequate for anything other than a Stock vehicle. When the stress on the pushrod surpasses what is considered a reasonable..

89+ 5.9L/6.7L Cummins Interstate McBee Main Bearing Set.    These bearings are now available COATED by Polydyn. Select option above.  Coating generally takes 3-5 business days, please keep this in mind if you are in a hurry. You can expect 2-3 business day before the bearings are delivered to Pol..

226-240 106.5 LSA .330/.340 Lift High Performance Strip/Pull Cam Our Cams Feature:Induction Hardened Steel Core Construction for strength that resist cracking under severe stress Large Radius on all corners Every cam is drilled and tapped for a bolt on retainerHere are some of the benefi..

Direct replacement for the stock stiffener plate for 2003+ Dodge 5.9L/6.7L Cummins diesel engines. Do not use the washer-seat the head of the main stud bolt directly to the girdle, making sure to use assembly lube between the nut & girdle. Studs Not Included. Machined from billet heat treated high-s..

Our 7/16″ .168 wall push rods for 24V engines have the advantage of  strength and rigidity. They have been proven to 3000+ HP and are still good for your daily driven truck.   Specs of Push Rods: 7/16” diameter .168 wall, factory length     Part Number: DJ-CH-24FTPR..

Cam, performance, cast, large intermediate Made from new cast blank Made from same type blank that some competitors are calling  "billet"Fly cut required Cam gear retainer w/mounting bolt included No exchange You will also receive and be billed Torco cam lube and Lucas engine break-i..

These studs are designed for use with any encore (1997.5) or newer "b" series Cummins engine block when using a modified girdle. These longer studs allow you to connect your girdle to the main caps for added strength to the block.Kit includesStuds, 14 ea12mm, main studs L-19, 240 ksi min G..

Mahle Monotherm diesel pistons offer maximum power for heavy-duty performance. These forged steel pistons have a simple design and very high structural stability to handle ever-increasing mechanical loads, both now and in the future. With a weight comparable to aluminum, Mahle Monotherm diesel p..

Cummins steel billet roller cam247-260 107 LSA .385/.379 LiftRoller Lifter Steel Core Camshaft High Performance Strip/Pull Cam  Our Cams Feature:Induction Hardened Steel Core Construction for strength that resist cracking under severe stressLarge Radius on all cornersEv..

Set of 12 OEM rocker arm trunnions were originally designed conservatively and in recent years this has allowed for rocker arm and pushrod issues in applications where load or performance is exceeding OEM. When the stress on the trunnion rises above what is considered a reasonable window of operatio..

Includes crank gear only, item number 2 in the picture. Mopar 5086726AB. Replaces Cummins:  5273412...

Roller Lifter Steel Core Camshaft CUMMINS STEEL BILLET CAM ROLLER 233-248 107 LSA .403/.400 LIFT High Performance Strip/Pull Cam  Our Cams Feature:Induction Hardened Steel Core Construction for strength that resist cracking under severe stressLarge Radius on all cornersEvery cam..

Mahle Monotherm diesel pistons offer maximum power for heavy-duty performance. These forged steel pistons have a simple design and very high structural stability to handle ever-increasing mechanical loads, both now and in the future. With a weight comparable to aluminum, Mahle Monotherm diesel p..

Our HD 115lb 24v Cummins Valve Springs have been proven with years of testing. We have seen over 120psi of boost on one of our Stage 3 cylinder heads with these springs. These are the same valve springs we included standard on our Stage 1, Stage 2, Stage 3 and Stage 4 performance cylinder heads and ..

Make your engine do what you want it to with a custom camshaft The timing and duration that your engines valves lift is critical to performance and the characteristics of the truck. Adjusting these with a custom camshaft can have drastic effects on power, turbo spool up, and torque produced. The st..

Cummins part number: 3909355..

Mahle Monotherm diesel pistons offer maximum power for heavy-duty performance. These forged steel pistons have a simple design and very high structural stability to handle ever-increasing mechanical loads, both now and in the future. With a weight comparable to aluminum, Mahle Monotherm diesel p..

Stock 04.5-07 5.9L 24V Cummins Valve Springs. Item 7 In The Picture Sold Per Valve Spring 24 Are Needed Per Head. Cummins: 5303406 (Old part number 4936080)..

24V Cummins Tool Steel Nitrided Tappets ( Sold as set of 12) Not for use with a cast cam Part number: D-150-24v..

Mahle Monotherm diesel pistons offer maximum power for heavy-duty performance. These forged steel pistons have a simple design and very high structural stability to handle ever-increasing mechanical loads, both now and in the future. With a weight comparable to aluminum, Mahle Monotherm diesel pisto..

Control the valvetrain in your 1998.5-2018 Dodge 5.9L & 6.7L Cummins with the XDP 24V Performance Valve Springs & Retainer Kit XD313. Valve springs are an essential upgrade that are often overlooked in many performance builds. The factory valve springs in your engine are not intended to handle the i..

Upgrade the Rocker Arm Bridges in your 1998.5-2018 Dodge 5.9L & 6.7L Cummins with the XDP Billet Rocker Arm Bridge Set XD318. From the factory, your Cummins rocker arm bridges are only designed to operate under the stock output levels. The added stresses and load from a modified engine can quickly e..

Put a set of MAHLE Motorsports 9299430 Custom Forged Aluminum Race Pistons in your 1989-2007 Dodge 5.9L Cummins. These custom forged diesel pistons are best suited for dedicated race vehicles. Although these performance forged pistons are stronger, the lack of a steel top ring groove in the forging ..

Do not use retainer on the common rail Includes cam lube  Core charge applies. Scheid Diesel part number: 4011-4/2K..

One (1) 03-07 Dodge 5.9L Cummins Reman Connecting Rod There is a $100 core charge on this product. Customer is responsible for core return shipping. Part number: 3971212RX This is a CRACKED CAP connecting rod. Picture is a placeholder only.  ..

Increase the reliability and performance of the valvetrain in your 1998.5-2018 Dodge 5.9L & 6.7L Cummins with the XDP Pushrods 3/8" Street Performance XD204. In modified Cummins applications, the factory Pushrods are not adequate to handle the stress from increased cylinder pressures, valve spring p..

Roller Lifter Steel Core Camshaft High Performance Strip/Pull Cam  Our Cams Feature:Induction Hardened Steel Core Construction for strength that resist cracking under severe stressLarge Radius on all cornersEvery cam is drilled and tapped for a bolt on retainerThese roller ..

Manton Is proud to announce we are now offering "Bolt On" Toolsteel Roller Rockerarm Assemblies for the 1998.5 - Present 5.9/6.7 Cummins Diesel. Manton has incorporated our same Values in our new diesel system as we have used in our Proven Top Fuel and Blown Alcohol Fat Head Hemi Roller Rockerarm s..

CUMMINS GENUINE PART   5.9L & 6.7L CRANKSHAFT GEAR DOWEL PIN     Part Number: 3904483 ..

Introducing our Freedom Series cylinder heads - Give new life to your engine with our fully remanufactured Cummins cylinder head. Each head is manufactured in our state-of-the-art cylinder head machine shop and guaranteed to meet or exceed factory specifications. All heads are inspected, pressure ch..

Cummins steel billet roller cam241-260 106 LSA .379/.379 LiftRoller Lifter Steel Core Camshaft High Performance Strip/Pull Cam  Our Cams Feature:Induction Hardened Steel Core Construction for strength that resist cracking under severe stressLarge Radius on all cornersEv..

Roller Lifter Steel Core Camshaft. CUMMINS STEEL BILLET CAM ROLLER 235-252 106 LSA .390/.385 LIFT High Performance Strip/Pull Cam  Our Cams Feature:Induction Hardened Steel Core Construction for strength that resist cracking under severe stressLarge Radius on all cornersEvery ca..

Cummins steel billet roller cam240-254 106 LSA .381/.381 LiftRoller Lifter Steel Core Camshaft High Performance Strip/Pull Cam  Our Cams Feature:Induction Hardened Steel Core Construction for strength that resist cracking under severe stressLarge Radius on all cornersEv..

The XDP Roller Rocker Arm Assembly Set XD326 is the ultimate upgrade for the rocker arms in your 1998.5-2018 Dodge 5.9L/6.7L Cummins. Your valvetrain components are on borrowed time if your engine is heavily modified. The XD326 addresses multiple weak points to give you a valvetrain that will suppor..

Increase reliability and put maximum power to the ground in your 1998.5-2018 Dodge 5.9L/6.7L & 6.7L Cummins with the XDP Competition & Race Performance 7/16 Pushrods XD205. In high performance and competition applications, the factory pushrods are no where near adequate to handle the stress from inc..

D&J Precision Machine Cummins Titanium Retainers for 1998 and up 24v Cummins cylinder heads. Our valve spring titanium retainers are proudly made in-house and they are 10 grams lighter than the stock retainers. Our Cummins Titanium Retainers are included standard on D&J Stage 2, Stage 3 and Stage 4 ..