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JEEP 4.0L/242 Engines & Components

Part Groups

Results 1 - 24 of 271

Edelbrock Performer Cylinder Heads

All Edelbrock aluminum cylinder heads feature threaded inserts in the rocker studs and exhaust manifold bolt holes for superior strength and durability. They also include hardened seats, bronze valve guides, and fully machined valve cover rails for a more consistent gasket seal. They offer improved power throughout the rpm range for greater throttle response and top-end horsepower. The intake and exhaust runners are CNC-machine profiled for superior flow and performance.

3.92 out of 5 stars ( 40 )

$1,459.50

$1,933.50

Melling Replacement Hydraulic Lifters

Melling replacement hydraulic lifters are perfect for when you're ready to freshen up your engine. Melling has designed these lifters to be within factory tolerances for the perfect fit. They are affordable and available as flat or roller lifters.

4.16 out of 5 stars ( 37 )

$11.99

Speed-Pro Hypereutectic Pistons

If you're looking for pistons with an unbeatable combination of performance and value, then Speed-Pro hypereutectic pistons are for you. These pistons are manufactured from aluminum alloy that contains 16 percent silicon for greater strength and wear resistance. They're also molded in the latest permanent-mold technology to ensure the precise fit and tight bore clearances that today's top engine builders demand. Hypereutectic pistons are ideal for use in high performance street, bracket, and oval track racing—and will work perfectly with normal ring end gaps. Choose the model designed for your vehicle and engine application.

4.57 out of 5 stars ( 329 )

$20.99

$205.99

System 1 Spin-On Oil Filters

System 1 has eliminated the need for disposable oil filters. Built from durable anodized aluminum housing, System 1 filters feature a washable, stainless steel element that can be used over and over again. They can be completely disassembled for inspection, revealing metal shavings and residue that could indicate engine wear or damage. System 1 oil filters are perfect for daily drivers, fleet vehicles, and race and marine applications.

4.73 out of 5 stars ( 15 )

$257.00

$358.00

Sealed Power Hydraulic Lifters

Sealed Power hydraulic lifters are precision-manufactured to maintain precise valve timing under all operating conditions. A patented constant orifice metering valve provides precise oil metering to the overhead valvetrain, and longer plungers or pistons provide increased bearing surfaces, resulting in longer lifter life. Their check valves are lightweight flat discs, allowing for higher speeds and more uniform operation than competitive lifters.

4.28 out of 5 stars ( 50 )

$9.99

Harland Sharp Original Roller Rockers

If you plan on adding performance to your street machine or building a serious racer, Harland Sharp Original Series roller rockers are recommended for you. Using the very latest manufacturing technology and only the very finest materials, the Original Series rockers incorporate race-proven enhancements, such as improved strength, performance, and lighter weight over conventional rocker arm designs. Don't settle for any old rocker arm--go with a true leader in roller rocker arm technology--Harland Sharp.

4.61 out of 5 stars ( 175 )

$117.99

$555.99

Canton Racing 90 Degree Rotating Remote Oil Filter Adapters

Canton Racing remote oil filter adapters feature a unique design that permits the two 90 degree inlet and outlet ports to be rotated. This simplifies hose and fitting connections for all applications. They are machined from billet aluminum and come with all necessary hardware and O-ring seals.

4.78 out of 5 stars ( 63 )

$108.00

PSC Power Steering Pulleys

Replace your old, wobbly pulley with these PSC power steering pulleys. Made from high quality materials, they meet factory specifications to ensure a precise fit on your power steering pump. An integral part of the drive system for belt-driven steering pumps, PSC power steering pulleys have you covered.

4.11 out of 5 stars ( 9 )

$75.00

COMP Cams Xtreme Energy 4x4 Cam and Lifter Kits

COMP Cams Xtreme Energy 4x4 cam and lifter kits are built to take advantage of the latest cam technology to provide maximum performance and low-end torque for your vehicle. Whether your use is off-roading or towing, there is an Xtreme 4x4 for you. By using an aggressive lobe profile, these cams provide better throttle response and more top-end horsepower than equivalent cams from other manufacturers, while delivering increased engine vacuum.

4.36 out of 5 stars ( 69 )

$354.95

$540.95

RT Off-Road Valve Covers

RT Off-Road valve covers make for classic good looks under the hood, while also serving as protection for your valvetrain (to keep oil from escaping the cylinder head). These cast aluminum valve covers are much less prone to flex and distortion than the plastic or factory stock versions and can be easily mounted on the top of the cylinder head. These valve covers are available in choice of finishes and include essential hardware for installation.

3.84 out of 5 stars ( 45 )

$121.99

$162.99

Hayden Oil Filter Relocation Kits

Hayden oil filter relocation kits allow you to relocate your oil filter to a more accessible location, such as in the engine compartment. Hayden manufactures these oil filter relocation kits out of quality materials to ensure performance and durability. Additional oil capacity helps cool internal engine parts providing maximum engine protection.

3.4 out of 5 stars ( 20 )

$82.99

Summit Racing™ Oil Filter Relocation Kits

These Summit Racing™ remote oil filter kits include a bypass adapter, filter mount, 8 ft. of oil hose, barb fittings, stainless steel hose clamps, mounting hardware, and instructions. These kits require a Fram PH8A or equivalent oil filter, which is not included.

3.95 out of 5 stars ( 188 )

$60.99

$74.99

Sealed Power Performance Piston Ring Sets

Sealed Power Performance piston rings are made from ductile iron, and compression rings are available with moly, chrome, and plasma-moly facings for extra durability. These OE-quality sets will seal mild- to high-compression engines and help protect against oil blowby. They feature standard ring end gaps for easy installation. Find the bore dimension and ring thicknesses needed for your application.

4.55 out of 5 stars ( 313 )

$45.99

$86.99

Melling Pushrods

Melling OEM replacement pushrods are perfect for stock rebuild or mild performance applications where open spring pressures do not exceed 300 lbs. They're manufactured from steel tubing and work well with factory or aftermarket rocker arms. These units are available in a wide range of lengths and other options for fitment on countless makes and models. When you're replacing your valvetrain components, trust Melling pushrods to keep your engine running smoothly.

4.51 out of 5 stars ( 73 )

$3.99

Dayco No Slack Idler Pulleys

Take up the slack with Dayco No Slack Idler pulleys. These specially formulated glass-filled polymer or steel-bodied pulleys have smoother surfaces and tighter dimensional tolerances for less vibration and longer belt life. They meet or exceed OEM specifications and feature lifetime-lubricated bearings and high-temperature seals to ensure peak bearing performance. Maximum structural integrity and optimal performance mean Dayco value for you. Keep your belts from slacking off with Dayco No Slack Idler pulleys.

4.55 out of 5 stars ( 80 )

$19.99

$29.99

Melling Stock Replacement Cam and Lifter Kits

Restore your engine to its true power potential with Melling's stock replacement cam and lifter kits. They're perfect for either replacement or stock rebuilds. Melling cam and liter kits also include a matched set of lifters so you won't have to worry about mismatched parts during installation.

4.16 out of 5 stars ( 19 )

$289.99

$425.99

COMP Cams Xtreme 4x4 Camshafts

COMP Cams Xtreme 4x4 camshafts are built to take advantage of the latest cam technology to provide maximum performance and torque for your vehicle. Whether your use is off-roading or towing, there is an Xtreme 4x4 for you. By using an aggressive lobe profile, these cams provide better throttle response and more mid and top-end horsepower.

4.49 out of 5 stars ( 47 )

$423.95

Derale Engine Oil Filter Relocation Kits

Now you can easily move your vehicle's oil filter to a more convenient location for quicker and easier filter changes with one of these Derale Performance engine oil filter relocation kits. They work great for engine swaps, too! The kits are available for hundreds of vehicles; order the model recommended for your application.

3.84 out of 5 stars ( 38 )

$80.28

$112.40

Trans-Dapt Performance Remote Oil Filter Relocation Kits

Trans-Dapt Performance remote oil filter relocation kits allow you to move your oil filter to a more accessible location, making filter changes quick and easy. They're available in single or dual filter kits. Dual filter kits double the filtration of your oil system to keep oil cleaner and add an extra quart of oil capacity.

3.49 out of 5 stars ( 78 )

$112.99

$151.99

Melling Rocker Arms

Melling rocker arms, available for both domestic and import applications, meet or exceed OEM specifications. Depending on the OE design specifications, Melling rocker arms are provided in either stamped or cast materials. Built from only the best materials and manufacturing processes available, they are perfect replacements priced right for your budget. Melling recommends installing new rocker arms with every engine rebuild to assure long engine life and efficient performance. Answer the little knock under your hood with replacement rocker arms from Melling--a supplier of quality engine parts.

4.58 out of 5 stars ( 71 )

$11.99

$19.99

Aeroquip Quick-Drain Oil Pan Couplings

Aeroquip quick-drain oil pan couplings are great for street rides, hot rods, race cars, or anything else that you need to cleanly drain fluid from efficiently. They eliminate the potential for spillage by draining directly into a waste container and make changing your oil quick, clean, and fun.

4.3 out of 5 stars ( 10 )

$64.99

$72.99

Pioneer Shaft Keys

Pioneer shaft keys are designed to locate the crank sprocket on the nose of the crankshaft. They're made of steel and available in several lengths for compatibility with many vehicle makes and engine models from the 1940s and up. The keys can be ordered individually or in larger quantities, depending on the application.

4.36 out of 5 stars ( 61 )

$13.99

$30.79

Sealed Power CP-Series Rod Bearings

Federal Mogul CP-Series rod bearings feature classic tri-metal construction and are a good choice for either street or moderate competition use. They have rugged 1010 steel backings, covered by Federal Mogul's H-24 copper-lead alloy. On top of this is a nickel barrier, followed by the tri-metal (lead-tin-copper) overplate that gives these bearings their strength and fatigue resistance. The bearings are then entirely covered with a flash coating of tin. Order the set designed for use with your make/model and engine application.

4.6 out of 5 stars ( 114 )

$8.99

$47.99

Sealed Power High-Volume Oil Pumps

Oil volume is nothing to take lightly, so why reuse an old oil pump or settle for something less than great, when you can have a Sealed Power pump? They've been making quality, reliable performance pumps for decades. These high-volume oil pumps have increased rotor or gear section lengths for increased oil delivery to critical areas under extreme conditions. Their sturdy cast-iron pump body handles the stress associated with high rpm and added oil volume. The extra volume is helpful in maintaining oil pressure in rebuilds.

4.37 out of 5 stars ( 57 )

$96.99

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