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JEEP 4.0L/242 Engines & Components

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Results 1 - 24 of 208

On Sale

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.

3.88 out of 5 stars ( 41 )

$1,933.50


$1,740.15

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

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.

4.22 out of 5 stars ( 40 )

$11.99

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.

4.75 out of 5 stars ( 16 )

$257.00

$304.00

Fram HP Series Oil Filters

For maximum performance and durability on the street or at the track, trust Fram HP Series oil filters. They offer twice the oil flow rate and four times the dirt-holding capacity of standard oil filters. Their extra-thick steel cans and heavier gauge tapping plates are designed to withstand the high pressures and flexing caused by demanding driving conditions. Tough steel end caps hold a spiral-shaped center tube to offer more durability and protection against collapse. Fram HP Series oil filters are compatible with all oil types and have been optimized for racing and high performance street cars. Additional features include: * Low-restriction racing media designed for high oil flow * 94 percent efficiency at 20 microns * Silicone anti-drainback valve on many applications * 10 to 18 gpm recommended maximum oil flow, depending on model * Maximum burst pressure: 350 to 500 psi, depending on model * Maximum operating pressure of 200 psi * Screen over bypass valve for extra protection against large contaminants * High-flow bypass valve * Flanged steel end caps

4.67 out of 5 stars ( 124 )

$16.99

$17.99

ARP Pro Series Cylinder Head Studs

ARP Pro Series cylinder head studs are cold-forged to ensure molecular integrity. They're heat-treated prior to thread rolling and machining. ARP Pro Series kits are also available with 12-point nuts, and all studs come complete with hardened parallel washers for an even load distribution and accurate torque readings. With hundreds of models ready to ship, these cylinder head fasteners can be ordered for virtually any style engine.

4.82 out of 5 stars ( 798 )

$134.99

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.

4.59 out of 5 stars ( 334 )

$32.99

$192.99

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.

3.87 out of 5 stars ( 39 )

$80.28

$112.40

Melling M-Select Torque Cam and Lifter Kits

These Melling M-Select Torque cam and lifter kits are designed for the perfect upgrade of your stock camshaft. They will provide a smooth idle, good low-end torque, and excellent pulling power. The Melling M-Select Torque cam and lifter kits include a matched set of Topline lifters to complete the installation. Rebuilding or upgrading your engine? Try one of these Melling M-Select Torque cam and lifter kits for maximum reliability.

4.57 out of 5 stars ( 23 )

$352.99

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.

3.51 out of 5 stars ( 79 )

$112.99

$151.99

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

On Sale

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.

4.46 out of 5 stars ( 48 )

$423.95

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.

4.32 out of 5 stars ( 53 )

$7.99

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 )

$79.99

Instant Rebate

Scorpion Off-Road Series Rocker Arms

Scorpion Off-Road Series rocker arms are made for the most demanding endurance demanding off-road applications—which makes them a premium choice for many Jeep models from the 1960s on up! These pedestal-style aluminum arms are available in different ratios, in your choice of either adjustable or non-adjustable configurations and are sold individually or in sets of 12. Order the model needed for your application. Off-Road Series rocker arm features: * Body geometry optimized to deliver a true 1.6 or 1.7 ratio (please specify ratio needed for your application) * Available in both adjustable and non-adjustable configurations * Aerospace grade 7000 series billet aluminum body * Precision ground needle roller bearings * Centerless ground fulcrum and roller * Bearing quality ground 100 carbon steel pin * Steel dual pedestal ensures correct rocker arm to valve alignment * Mounting hardware included * Will handle 380 lbs. of open valve spring pressure (max recommended spring pressure for 5/16 fastener) * Will clear stock valve cover (with removal of internal PCV baffle)

4.79 out of 5 stars ( 14 )

$37.36

$408.83

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.

3.81 out of 5 stars ( 47 )

$145.99

$179.99

VEGE Remanufactured Long Block Crate Engines

VEGE remanufactured long block crate engines are an excellent foundation for budget-minded builds. These premium-quality refurbished engines are drop-in replacements for a wide range of stock vehicles—and can be retrofitted into additional applications. Each engine is reverse-engineered to ensure that any original defects are removed. Certified technicians recondition the long blocks to factory specifications, replacing wearable parts or machining them back to OE standards. The engines are thoroughly tested and calibrated to deliver maximum performance and long-term durability. Order the VEGE remanufactured crate engine recommended for your vehicle.

3.79 out of 5 stars ( 73 )

$1,480.50

$3,216.99

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.

4.53 out of 5 stars ( 318 )

$79.99

$108.99

K&N Performance Gold Oil Filters

Get oil filtration that's as good as gold with K&N Performance Gold oil filters. Keep your engine free from contaminants as small as 10 microns. They use a resin-impregnated filter media to provide maximum filtering and an inner core to lend extra structural support to the filter, preventing filter collapse. Plus, many of these K&N oil filters have an anti-drainback valve (where applicable) that eliminates dry starts and prevents oil from draining back into the crankcase during engine shutdown. And they're protected by a heavy-duty outer shell that guards against rock and stone damage and provides over 550 psi hydrostatic burst strength. So, if you want golden-level oil protection, then you want K&N oil filters.

4.83 out of 5 stars ( 513 )

$17.99

Summit Racing™ Valve Cover Oil Fill Caps

Dress up your engine compartment while keeping oil in its place and the dirt at bay with Summit Racing™ valve cover oil fill caps. They're manufactured from high-quality material, providing a proper fit and seal to prevent oil loss. These round, steel caps are available to fit a variety of applications, including GM, Mopar, Ford, AMC, Jeep, and other make/model vehicles. Whatever your part needs, chances are Summit Racing™ has it!

4.68 out of 5 stars ( 38 )

$4.99

Melling Oil Pump and Pickup Kits

Designed for a simple installation, these Melling oil pump and pickup kits pump 20 percent additional oil volume compared to stock. The pickups' screen traps debris without restricting flow, and their orientation ensures optimum clearance from the bottom of the oil pan. Make Melling your choice when installing oil pump and pickup kits.

3.67 out of 5 stars ( 3 )

$96.99

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.

4.2 out of 5 stars ( 10 )

$75.00

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.

4.24 out of 5 stars ( 21 )

$289.99

$392.99

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

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